diff --git a/Documentation/DocBook/tracepoint.tmpl b/Documentation/DocBook/tracepoint.tmpl
index b0756d0fd57910a44d2f2d29fdb4edf87dac21ca..8bca1d5cec09a8bf6c8c5f0e6f159d770fcf806c 100644
--- a/Documentation/DocBook/tracepoint.tmpl
+++ b/Documentation/DocBook/tracepoint.tmpl
@@ -86,4 +86,9 @@
!Iinclude/trace/events/irq.h
+
+ SIGNAL
+!Iinclude/trace/events/signal.h
+
+
diff --git a/Documentation/trace/kprobetrace.txt b/Documentation/trace/kprobetrace.txt
new file mode 100644
index 0000000000000000000000000000000000000000..47aabeebbdf63ddf8c30e0b39659eefac08c58e6
--- /dev/null
+++ b/Documentation/trace/kprobetrace.txt
@@ -0,0 +1,149 @@
+ Kprobe-based Event Tracing
+ ==========================
+
+ Documentation is written by Masami Hiramatsu
+
+
+Overview
+--------
+These events are similar to tracepoint based events. Instead of Tracepoint,
+this is based on kprobes (kprobe and kretprobe). So it can probe wherever
+kprobes can probe (this means, all functions body except for __kprobes
+functions). Unlike the Tracepoint based event, this can be added and removed
+dynamically, on the fly.
+
+To enable this feature, build your kernel with CONFIG_KPROBE_TRACING=y.
+
+Similar to the events tracer, this doesn't need to be activated via
+current_tracer. Instead of that, add probe points via
+/sys/kernel/debug/tracing/kprobe_events, and enable it via
+/sys/kernel/debug/tracing/events/kprobes//enabled.
+
+
+Synopsis of kprobe_events
+-------------------------
+ p[:[GRP/]EVENT] SYMBOL[+offs]|MEMADDR [FETCHARGS] : Set a probe
+ r[:[GRP/]EVENT] SYMBOL[+0] [FETCHARGS] : Set a return probe
+
+ GRP : Group name. If omitted, use "kprobes" for it.
+ EVENT : Event name. If omitted, the event name is generated
+ based on SYMBOL+offs or MEMADDR.
+ SYMBOL[+offs] : Symbol+offset where the probe is inserted.
+ MEMADDR : Address where the probe is inserted.
+
+ FETCHARGS : Arguments. Each probe can have up to 128 args.
+ %REG : Fetch register REG
+ @ADDR : Fetch memory at ADDR (ADDR should be in kernel)
+ @SYM[+|-offs] : Fetch memory at SYM +|- offs (SYM should be a data symbol)
+ $stackN : Fetch Nth entry of stack (N >= 0)
+ $stack : Fetch stack address.
+ $argN : Fetch function argument. (N >= 0)(*)
+ $retval : Fetch return value.(**)
+ +|-offs(FETCHARG) : Fetch memory at FETCHARG +|- offs address.(***)
+ NAME=FETCHARG: Set NAME as the argument name of FETCHARG.
+
+ (*) aN may not correct on asmlinkaged functions and at the middle of
+ function body.
+ (**) only for return probe.
+ (***) this is useful for fetching a field of data structures.
+
+
+Per-Probe Event Filtering
+-------------------------
+ Per-probe event filtering feature allows you to set different filter on each
+probe and gives you what arguments will be shown in trace buffer. If an event
+name is specified right after 'p:' or 'r:' in kprobe_events, it adds an event
+under tracing/events/kprobes/, at the directory you can see 'id',
+'enabled', 'format' and 'filter'.
+
+enabled:
+ You can enable/disable the probe by writing 1 or 0 on it.
+
+format:
+ This shows the format of this probe event.
+
+filter:
+ You can write filtering rules of this event.
+
+id:
+ This shows the id of this probe event.
+
+
+Event Profiling
+---------------
+ You can check the total number of probe hits and probe miss-hits via
+/sys/kernel/debug/tracing/kprobe_profile.
+ The first column is event name, the second is the number of probe hits,
+the third is the number of probe miss-hits.
+
+
+Usage examples
+--------------
+To add a probe as a new event, write a new definition to kprobe_events
+as below.
+
+ echo p:myprobe do_sys_open dfd=$arg0 filename=$arg1 flags=$arg2 mode=$arg3 > /sys/kernel/debug/tracing/kprobe_events
+
+ This sets a kprobe on the top of do_sys_open() function with recording
+1st to 4th arguments as "myprobe" event. As this example shows, users can
+choose more familiar names for each arguments.
+
+ echo r:myretprobe do_sys_open $retval >> /sys/kernel/debug/tracing/kprobe_events
+
+ This sets a kretprobe on the return point of do_sys_open() function with
+recording return value as "myretprobe" event.
+ You can see the format of these events via
+/sys/kernel/debug/tracing/events/kprobes//format.
+
+ cat /sys/kernel/debug/tracing/events/kprobes/myprobe/format
+name: myprobe
+ID: 75
+format:
+ field:unsigned short common_type; offset:0; size:2;
+ field:unsigned char common_flags; offset:2; size:1;
+ field:unsigned char common_preempt_count; offset:3; size:1;
+ field:int common_pid; offset:4; size:4;
+ field:int common_tgid; offset:8; size:4;
+
+ field: unsigned long ip; offset:16;tsize:8;
+ field: int nargs; offset:24;tsize:4;
+ field: unsigned long dfd; offset:32;tsize:8;
+ field: unsigned long filename; offset:40;tsize:8;
+ field: unsigned long flags; offset:48;tsize:8;
+ field: unsigned long mode; offset:56;tsize:8;
+
+print fmt: "(%lx) dfd=%lx filename=%lx flags=%lx mode=%lx", REC->ip, REC->dfd, REC->filename, REC->flags, REC->mode
+
+
+ You can see that the event has 4 arguments as in the expressions you specified.
+
+ echo > /sys/kernel/debug/tracing/kprobe_events
+
+ This clears all probe points.
+
+ Right after definition, each event is disabled by default. For tracing these
+events, you need to enable it.
+
+ echo 1 > /sys/kernel/debug/tracing/events/kprobes/myprobe/enable
+ echo 1 > /sys/kernel/debug/tracing/events/kprobes/myretprobe/enable
+
+ And you can see the traced information via /sys/kernel/debug/tracing/trace.
+
+ cat /sys/kernel/debug/tracing/trace
+# tracer: nop
+#
+# TASK-PID CPU# TIMESTAMP FUNCTION
+# | | | | |
+ <...>-1447 [001] 1038282.286875: myprobe: (do_sys_open+0x0/0xd6) dfd=3 filename=7fffd1ec4440 flags=8000 mode=0
+ <...>-1447 [001] 1038282.286878: myretprobe: (sys_openat+0xc/0xe <- do_sys_open) $retval=fffffffffffffffe
+ <...>-1447 [001] 1038282.286885: myprobe: (do_sys_open+0x0/0xd6) dfd=ffffff9c filename=40413c flags=8000 mode=1b6
+ <...>-1447 [001] 1038282.286915: myretprobe: (sys_open+0x1b/0x1d <- do_sys_open) $retval=3
+ <...>-1447 [001] 1038282.286969: myprobe: (do_sys_open+0x0/0xd6) dfd=ffffff9c filename=4041c6 flags=98800 mode=10
+ <...>-1447 [001] 1038282.286976: myretprobe: (sys_open+0x1b/0x1d <- do_sys_open) $retval=3
+
+
+ Each line shows when the kernel hits an event, and <- SYMBOL means kernel
+returns from SYMBOL(e.g. "sys_open+0x1b/0x1d <- do_sys_open" means kernel
+returns from do_sys_open to sys_open+0x1b).
+
+
diff --git a/arch/Kconfig b/arch/Kconfig
index 7f418bbc261a0f825ab6072f935f1f974a2f746c..eef3bbb970753c1d840cb9c1520147850dda6800 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -126,4 +126,11 @@ config HAVE_DMA_API_DEBUG
config HAVE_DEFAULT_NO_SPIN_MUTEXES
bool
+config HAVE_HW_BREAKPOINT
+ bool
+ depends on HAVE_PERF_EVENTS
+ select ANON_INODES
+ select PERF_EVENTS
+
+
source "kernel/gcov/Kconfig"
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 3b1005185390557558c99d3efb971824b8b76b68..bf3382f1904d04d0f0807490c1449691f540a4b7 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -46,7 +46,7 @@ config DEBUG_STACK_USAGE
config HCALL_STATS
bool "Hypervisor call instrumentation"
- depends on PPC_PSERIES && DEBUG_FS
+ depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS
help
Adds code to keep track of the number of hypervisor calls made and
the amount of time spent in hypervisor calls. Wall time spent in
diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig
index f1889abb89b1a196e61861413237f0ecd423368c..c568329723b8d5371f9cb920dbd9f811af9bcb81 100644
--- a/arch/powerpc/configs/pseries_defconfig
+++ b/arch/powerpc/configs/pseries_defconfig
@@ -1683,7 +1683,7 @@ CONFIG_HAVE_ARCH_KGDB=y
CONFIG_DEBUG_STACKOVERFLOW=y
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_DEBUG_PAGEALLOC is not set
-CONFIG_HCALL_STATS=y
+# CONFIG_HCALL_STATS is not set
# CONFIG_CODE_PATCHING_SELFTEST is not set
# CONFIG_FTR_FIXUP_SELFTEST is not set
# CONFIG_MSI_BITMAP_SELFTEST is not set
diff --git a/arch/powerpc/include/asm/emulated_ops.h b/arch/powerpc/include/asm/emulated_ops.h
index 9154e8526732cf2f3c217f450244f4d8ed5f0f04..f0fb4fc1f6e6878a2617fbdf6782c5e2883af39b 100644
--- a/arch/powerpc/include/asm/emulated_ops.h
+++ b/arch/powerpc/include/asm/emulated_ops.h
@@ -19,6 +19,7 @@
#define _ASM_POWERPC_EMULATED_OPS_H
#include
+#include
#ifdef CONFIG_PPC_EMULATED_STATS
@@ -57,7 +58,7 @@ extern u32 ppc_warn_emulated;
extern void ppc_warn_emulated_print(const char *type);
-#define PPC_WARN_EMULATED(type) \
+#define __PPC_WARN_EMULATED(type) \
do { \
atomic_inc(&ppc_emulated.type.val); \
if (ppc_warn_emulated) \
@@ -66,8 +67,22 @@ extern void ppc_warn_emulated_print(const char *type);
#else /* !CONFIG_PPC_EMULATED_STATS */
-#define PPC_WARN_EMULATED(type) do { } while (0)
+#define __PPC_WARN_EMULATED(type) do { } while (0)
#endif /* !CONFIG_PPC_EMULATED_STATS */
+#define PPC_WARN_EMULATED(type, regs) \
+ do { \
+ perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, \
+ 1, 0, regs, 0); \
+ __PPC_WARN_EMULATED(type); \
+ } while (0)
+
+#define PPC_WARN_ALIGNMENT(type, regs) \
+ do { \
+ perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, \
+ 1, 0, regs, regs->dar); \
+ __PPC_WARN_EMULATED(type); \
+ } while (0)
+
#endif /* _ASM_POWERPC_EMULATED_OPS_H */
diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
index 6251a4b10be7a9a2004592b6aa7dff7994c09b0e..c27caac47ad1d6c92980ea78d13e03778053a13f 100644
--- a/arch/powerpc/include/asm/hvcall.h
+++ b/arch/powerpc/include/asm/hvcall.h
@@ -274,6 +274,8 @@ struct hcall_stats {
unsigned long num_calls; /* number of calls (on this CPU) */
unsigned long tb_total; /* total wall time (mftb) of calls. */
unsigned long purr_total; /* total cpu time (PURR) of calls. */
+ unsigned long tb_start;
+ unsigned long purr_start;
};
#define HCALL_STAT_ARRAY_SIZE ((MAX_HCALL_OPCODE >> 2) + 1)
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index 6315edc205d8673e1db6702224b477cee0ea602e..bc8dd53f718a1b201a16e91f4864bb221f5acb25 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -489,6 +489,8 @@
#define SPRN_MMCR1 798
#define SPRN_MMCRA 0x312
#define MMCRA_SDSYNC 0x80000000UL /* SDAR synced with SIAR */
+#define MMCRA_SDAR_DCACHE_MISS 0x40000000UL
+#define MMCRA_SDAR_ERAT_MISS 0x20000000UL
#define MMCRA_SIHV 0x10000000UL /* state of MSR HV when SIAR set */
#define MMCRA_SIPR 0x08000000UL /* state of MSR PR when SIAR set */
#define MMCRA_SLOT 0x07000000UL /* SLOT bits (37-39) */
diff --git a/arch/powerpc/include/asm/trace.h b/arch/powerpc/include/asm/trace.h
new file mode 100644
index 0000000000000000000000000000000000000000..cbe2297d68b6465ceeb204fbd4eeb863cdc7a1b0
--- /dev/null
+++ b/arch/powerpc/include/asm/trace.h
@@ -0,0 +1,133 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM powerpc
+
+#if !defined(_TRACE_POWERPC_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_POWERPC_H
+
+#include
+
+struct pt_regs;
+
+TRACE_EVENT(irq_entry,
+
+ TP_PROTO(struct pt_regs *regs),
+
+ TP_ARGS(regs),
+
+ TP_STRUCT__entry(
+ __field(struct pt_regs *, regs)
+ ),
+
+ TP_fast_assign(
+ __entry->regs = regs;
+ ),
+
+ TP_printk("pt_regs=%p", __entry->regs)
+);
+
+TRACE_EVENT(irq_exit,
+
+ TP_PROTO(struct pt_regs *regs),
+
+ TP_ARGS(regs),
+
+ TP_STRUCT__entry(
+ __field(struct pt_regs *, regs)
+ ),
+
+ TP_fast_assign(
+ __entry->regs = regs;
+ ),
+
+ TP_printk("pt_regs=%p", __entry->regs)
+);
+
+TRACE_EVENT(timer_interrupt_entry,
+
+ TP_PROTO(struct pt_regs *regs),
+
+ TP_ARGS(regs),
+
+ TP_STRUCT__entry(
+ __field(struct pt_regs *, regs)
+ ),
+
+ TP_fast_assign(
+ __entry->regs = regs;
+ ),
+
+ TP_printk("pt_regs=%p", __entry->regs)
+);
+
+TRACE_EVENT(timer_interrupt_exit,
+
+ TP_PROTO(struct pt_regs *regs),
+
+ TP_ARGS(regs),
+
+ TP_STRUCT__entry(
+ __field(struct pt_regs *, regs)
+ ),
+
+ TP_fast_assign(
+ __entry->regs = regs;
+ ),
+
+ TP_printk("pt_regs=%p", __entry->regs)
+);
+
+#ifdef CONFIG_PPC_PSERIES
+extern void hcall_tracepoint_regfunc(void);
+extern void hcall_tracepoint_unregfunc(void);
+
+TRACE_EVENT_FN(hcall_entry,
+
+ TP_PROTO(unsigned long opcode, unsigned long *args),
+
+ TP_ARGS(opcode, args),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, opcode)
+ ),
+
+ TP_fast_assign(
+ __entry->opcode = opcode;
+ ),
+
+ TP_printk("opcode=%lu", __entry->opcode),
+
+ hcall_tracepoint_regfunc, hcall_tracepoint_unregfunc
+);
+
+TRACE_EVENT_FN(hcall_exit,
+
+ TP_PROTO(unsigned long opcode, unsigned long retval,
+ unsigned long *retbuf),
+
+ TP_ARGS(opcode, retval, retbuf),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, opcode)
+ __field(unsigned long, retval)
+ ),
+
+ TP_fast_assign(
+ __entry->opcode = opcode;
+ __entry->retval = retval;
+ ),
+
+ TP_printk("opcode=%lu retval=%lu", __entry->opcode, __entry->retval),
+
+ hcall_tracepoint_regfunc, hcall_tracepoint_unregfunc
+);
+#endif
+
+#endif /* _TRACE_POWERPC_H */
+
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+
+#define TRACE_INCLUDE_PATH asm
+#define TRACE_INCLUDE_FILE trace
+
+#include
diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index a5b632e52faea9dab9c63921430d572ca1e9f0f2..3839839f83c79ad8544ef0bbf6ded33e0d96ce13 100644
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -732,7 +732,7 @@ int fix_alignment(struct pt_regs *regs)
#ifdef CONFIG_SPE
if ((instr >> 26) == 0x4) {
- PPC_WARN_EMULATED(spe);
+ PPC_WARN_ALIGNMENT(spe, regs);
return emulate_spe(regs, reg, instr);
}
#endif
@@ -786,7 +786,7 @@ int fix_alignment(struct pt_regs *regs)
flags |= SPLT;
nb = 8;
}
- PPC_WARN_EMULATED(vsx);
+ PPC_WARN_ALIGNMENT(vsx, regs);
return emulate_vsx(addr, reg, areg, regs, flags, nb);
}
#endif
@@ -794,7 +794,7 @@ int fix_alignment(struct pt_regs *regs)
* the exception of DCBZ which is handled as a special case here
*/
if (instr == DCBZ) {
- PPC_WARN_EMULATED(dcbz);
+ PPC_WARN_ALIGNMENT(dcbz, regs);
return emulate_dcbz(regs, addr);
}
if (unlikely(nb == 0))
@@ -804,7 +804,7 @@ int fix_alignment(struct pt_regs *regs)
* function
*/
if (flags & M) {
- PPC_WARN_EMULATED(multiple);
+ PPC_WARN_ALIGNMENT(multiple, regs);
return emulate_multiple(regs, addr, reg, nb,
flags, instr, swiz);
}
@@ -825,11 +825,11 @@ int fix_alignment(struct pt_regs *regs)
/* Special case for 16-byte FP loads and stores */
if (nb == 16) {
- PPC_WARN_EMULATED(fp_pair);
+ PPC_WARN_ALIGNMENT(fp_pair, regs);
return emulate_fp_pair(addr, reg, flags);
}
- PPC_WARN_EMULATED(unaligned);
+ PPC_WARN_ALIGNMENT(unaligned, regs);
/* If we are loading, get the data from user space, else
* get it from register values
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 9763267e38b46cbcdb2d6c9bfffd83d61b1eeb08..bdcb557d470ab1a3f272f0783e0e77244f88cbe2 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -551,7 +551,7 @@ restore:
BEGIN_FW_FTR_SECTION
ld r5,SOFTE(r1)
FW_FTR_SECTION_ELSE
- b iseries_check_pending_irqs
+ b .Liseries_check_pending_irqs
ALT_FW_FTR_SECTION_END_IFCLR(FW_FEATURE_ISERIES)
2:
TRACE_AND_RESTORE_IRQ(r5);
@@ -623,7 +623,7 @@ ALT_FW_FTR_SECTION_END_IFCLR(FW_FEATURE_ISERIES)
#endif /* CONFIG_PPC_BOOK3E */
-iseries_check_pending_irqs:
+.Liseries_check_pending_irqs:
#ifdef CONFIG_PPC_ISERIES
ld r5,SOFTE(r1)
cmpdi 0,r5,0
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 1808876edcc91d4f43fdff8fde2c8e1770fc832f..c7eb4e0eb86cae27f3fcd510519d5177b124fa5e 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -185,12 +185,15 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE)
* prolog code of the PerformanceMonitor one. A little
* trickery is thus necessary
*/
+performance_monitor_pSeries_1:
. = 0xf00
b performance_monitor_pSeries
+altivec_unavailable_pSeries_1:
. = 0xf20
b altivec_unavailable_pSeries
+vsx_unavailable_pSeries_1:
. = 0xf40
b vsx_unavailable_pSeries
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index e5d1211779840f029841e1591952c3b5ec9b4fae..02a334662cc02148bf6f1cb9ba85cf118d799059 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -70,6 +70,8 @@
#include
#include
#endif
+#define CREATE_TRACE_POINTS
+#include
int __irq_offset_value;
static int ppc_spurious_interrupts;
@@ -325,6 +327,8 @@ void do_IRQ(struct pt_regs *regs)
struct pt_regs *old_regs = set_irq_regs(regs);
unsigned int irq;
+ trace_irq_entry(regs);
+
irq_enter();
check_stack_overflow();
@@ -348,6 +352,8 @@ void do_IRQ(struct pt_regs *regs)
timer_interrupt(regs);
}
#endif
+
+ trace_irq_exit(regs);
}
void __init init_IRQ(void)
diff --git a/arch/powerpc/kernel/perf_event.c b/arch/powerpc/kernel/perf_event.c
index 87f1663584b054182b3f7719fe96088e637fb78c..1eb85fbf53a50277f48be5ae5d8c57772d216d61 100644
--- a/arch/powerpc/kernel/perf_event.c
+++ b/arch/powerpc/kernel/perf_event.c
@@ -1165,7 +1165,7 @@ static void record_and_restart(struct perf_event *event, unsigned long val,
*/
if (record) {
struct perf_sample_data data = {
- .addr = 0,
+ .addr = ~0ULL,
.period = event->hw.last_period,
};
diff --git a/arch/powerpc/kernel/power5+-pmu.c b/arch/powerpc/kernel/power5+-pmu.c
index 0f4c1c73a6adea4ca405b3ec223faca3370e0ee3..199de527d411446918651bd374bc5e9586ace46f 100644
--- a/arch/powerpc/kernel/power5+-pmu.c
+++ b/arch/powerpc/kernel/power5+-pmu.c
@@ -72,10 +72,6 @@
#define MMCR1_PMCSEL_SH(n) (MMCR1_PMC1SEL_SH - (n) * 8)
#define MMCR1_PMCSEL_MSK 0x7f
-/*
- * Bits in MMCRA
- */
-
/*
* Layout of constraint bits:
* 6666555555555544444444443333333333222222222211111111110000000000
diff --git a/arch/powerpc/kernel/power5-pmu.c b/arch/powerpc/kernel/power5-pmu.c
index c351b3a57fbb3361cb04103e95f514b86dcaff52..98b6a729a9dd127cc2c88e799b58bdbea2fa313c 100644
--- a/arch/powerpc/kernel/power5-pmu.c
+++ b/arch/powerpc/kernel/power5-pmu.c
@@ -72,10 +72,6 @@
#define MMCR1_PMCSEL_SH(n) (MMCR1_PMC1SEL_SH - (n) * 8)
#define MMCR1_PMCSEL_MSK 0x7f
-/*
- * Bits in MMCRA
- */
-
/*
* Layout of constraint bits:
* 6666555555555544444444443333333333222222222211111111110000000000
@@ -390,7 +386,7 @@ static int power5_compute_mmcr(u64 event[], int n_ev,
unsigned int hwc[], unsigned long mmcr[])
{
unsigned long mmcr1 = 0;
- unsigned long mmcra = 0;
+ unsigned long mmcra = MMCRA_SDAR_DCACHE_MISS | MMCRA_SDAR_ERAT_MISS;
unsigned int pmc, unit, byte, psel;
unsigned int ttm, grp;
int i, isbus, bit, grsel;
diff --git a/arch/powerpc/kernel/power6-pmu.c b/arch/powerpc/kernel/power6-pmu.c
index ca399ba5034c9d13373484476312b6c7bc8691f2..84a607bda8fbc129562943d7d2ce7fe0ee0f11bd 100644
--- a/arch/powerpc/kernel/power6-pmu.c
+++ b/arch/powerpc/kernel/power6-pmu.c
@@ -178,7 +178,7 @@ static int p6_compute_mmcr(u64 event[], int n_ev,
unsigned int hwc[], unsigned long mmcr[])
{
unsigned long mmcr1 = 0;
- unsigned long mmcra = 0;
+ unsigned long mmcra = MMCRA_SDAR_DCACHE_MISS | MMCRA_SDAR_ERAT_MISS;
int i;
unsigned int pmc, ev, b, u, s, psel;
unsigned int ttmset = 0;
diff --git a/arch/powerpc/kernel/power7-pmu.c b/arch/powerpc/kernel/power7-pmu.c
index 28a4daacdc0222cc6b80c3824bf1529ea2f9556f..852f7b7f6b4045801df807b997c7b110426ce7a6 100644
--- a/arch/powerpc/kernel/power7-pmu.c
+++ b/arch/powerpc/kernel/power7-pmu.c
@@ -50,10 +50,6 @@
#define MMCR1_PMCSEL_SH(n) (MMCR1_PMC1SEL_SH - (n) * 8)
#define MMCR1_PMCSEL_MSK 0xff
-/*
- * Bits in MMCRA
- */
-
/*
* Layout of constraint bits:
* 6666555555555544444444443333333333222222222211111111110000000000
@@ -230,7 +226,7 @@ static int power7_compute_mmcr(u64 event[], int n_ev,
unsigned int hwc[], unsigned long mmcr[])
{
unsigned long mmcr1 = 0;
- unsigned long mmcra = 0;
+ unsigned long mmcra = MMCRA_SDAR_DCACHE_MISS | MMCRA_SDAR_ERAT_MISS;
unsigned int pmc, unit, combine, l2sel, psel;
unsigned int pmc_inuse = 0;
int i;
diff --git a/arch/powerpc/kernel/ppc970-pmu.c b/arch/powerpc/kernel/ppc970-pmu.c
index 479574413a93fa5c7aa3b38e28537b2830517f90..8eff48e20dba8ae056f9f4469642a5cdc453aefc 100644
--- a/arch/powerpc/kernel/ppc970-pmu.c
+++ b/arch/powerpc/kernel/ppc970-pmu.c
@@ -83,10 +83,6 @@ static short mmcr1_adder_bits[8] = {
MMCR1_PMC8_ADDER_SEL_SH
};
-/*
- * Bits in MMCRA
- */
-
/*
* Layout of constraint bits:
* 6666555555555544444444443333333333222222222211111111110000000000
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 4271f7a655a3adfb5e0636e83c8f6e59b61e1868..845c72ab7357884c580a1c6f3f3217ed4987ee75 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -660,6 +660,7 @@ late_initcall(check_cache_coherency);
#ifdef CONFIG_DEBUG_FS
struct dentry *powerpc_debugfs_root;
+EXPORT_SYMBOL(powerpc_debugfs_root);
static int powerpc_debugfs_init(void)
{
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index a136a11c490d0f36a9b32812132e682c38262f8f..36707dec94d775376c0b59eac099ff5e8da75116 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -54,6 +54,7 @@
#include
#include
#include
+#include
#include
#include
@@ -571,6 +572,8 @@ void timer_interrupt(struct pt_regs * regs)
struct clock_event_device *evt = &decrementer->event;
u64 now;
+ trace_timer_interrupt_entry(regs);
+
/* Ensure a positive value is written to the decrementer, or else
* some CPUs will continuue to take decrementer exceptions */
set_dec(DECREMENTER_MAX);
@@ -590,6 +593,7 @@ void timer_interrupt(struct pt_regs * regs)
now = decrementer->next_tb - now;
if (now <= DECREMENTER_MAX)
set_dec((int)now);
+ trace_timer_interrupt_exit(regs);
return;
}
old_regs = set_irq_regs(regs);
@@ -620,6 +624,8 @@ void timer_interrupt(struct pt_regs * regs)
irq_exit();
set_irq_regs(old_regs);
+
+ trace_timer_interrupt_exit(regs);
}
void wakeup_decrementer(void)
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 6f0ae1a9bfae6d78b31afdf15f1c22d554e5900d..9d1f9354d6cafcf12fd7719d599615e31e55b2d9 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -759,7 +759,7 @@ static int emulate_instruction(struct pt_regs *regs)
/* Emulate the mfspr rD, PVR. */
if ((instword & PPC_INST_MFSPR_PVR_MASK) == PPC_INST_MFSPR_PVR) {
- PPC_WARN_EMULATED(mfpvr);
+ PPC_WARN_EMULATED(mfpvr, regs);
rd = (instword >> 21) & 0x1f;
regs->gpr[rd] = mfspr(SPRN_PVR);
return 0;
@@ -767,7 +767,7 @@ static int emulate_instruction(struct pt_regs *regs)
/* Emulating the dcba insn is just a no-op. */
if ((instword & PPC_INST_DCBA_MASK) == PPC_INST_DCBA) {
- PPC_WARN_EMULATED(dcba);
+ PPC_WARN_EMULATED(dcba, regs);
return 0;
}
@@ -776,7 +776,7 @@ static int emulate_instruction(struct pt_regs *regs)
int shift = (instword >> 21) & 0x1c;
unsigned long msk = 0xf0000000UL >> shift;
- PPC_WARN_EMULATED(mcrxr);
+ PPC_WARN_EMULATED(mcrxr, regs);
regs->ccr = (regs->ccr & ~msk) | ((regs->xer >> shift) & msk);
regs->xer &= ~0xf0000000UL;
return 0;
@@ -784,19 +784,19 @@ static int emulate_instruction(struct pt_regs *regs)
/* Emulate load/store string insn. */
if ((instword & PPC_INST_STRING_GEN_MASK) == PPC_INST_STRING) {
- PPC_WARN_EMULATED(string);
+ PPC_WARN_EMULATED(string, regs);
return emulate_string_inst(regs, instword);
}
/* Emulate the popcntb (Population Count Bytes) instruction. */
if ((instword & PPC_INST_POPCNTB_MASK) == PPC_INST_POPCNTB) {
- PPC_WARN_EMULATED(popcntb);
+ PPC_WARN_EMULATED(popcntb, regs);
return emulate_popcntb_inst(regs, instword);
}
/* Emulate isel (Integer Select) instruction */
if ((instword & PPC_INST_ISEL_MASK) == PPC_INST_ISEL) {
- PPC_WARN_EMULATED(isel);
+ PPC_WARN_EMULATED(isel, regs);
return emulate_isel(regs, instword);
}
@@ -995,7 +995,7 @@ void SoftwareEmulation(struct pt_regs *regs)
#ifdef CONFIG_MATH_EMULATION
errcode = do_mathemu(regs);
if (errcode >= 0)
- PPC_WARN_EMULATED(math);
+ PPC_WARN_EMULATED(math, regs);
switch (errcode) {
case 0:
@@ -1018,7 +1018,7 @@ void SoftwareEmulation(struct pt_regs *regs)
#elif defined(CONFIG_8XX_MINIMAL_FPEMU)
errcode = Soft_emulate_8xx(regs);
if (errcode >= 0)
- PPC_WARN_EMULATED(8xx);
+ PPC_WARN_EMULATED(8xx, regs);
switch (errcode) {
case 0:
@@ -1129,7 +1129,7 @@ void altivec_assist_exception(struct pt_regs *regs)
flush_altivec_to_thread(current);
- PPC_WARN_EMULATED(altivec);
+ PPC_WARN_EMULATED(altivec, regs);
err = emulate_altivec(regs);
if (err == 0) {
regs->nip += 4; /* skip emulated instruction */
diff --git a/arch/powerpc/lib/copypage_64.S b/arch/powerpc/lib/copypage_64.S
index 75f3267fdc300977f26ac6cc6e2a0db41add6525..e68beac0a171f41918e37a47aed0722bc0081218 100644
--- a/arch/powerpc/lib/copypage_64.S
+++ b/arch/powerpc/lib/copypage_64.S
@@ -26,11 +26,11 @@ BEGIN_FTR_SECTION
srd r8,r5,r11
mtctr r8
-setup:
+.Lsetup:
dcbt r9,r4
dcbz r9,r3
add r9,r9,r12
- bdnz setup
+ bdnz .Lsetup
END_FTR_SECTION_IFSET(CPU_FTR_CP_USE_DCBTZ)
addi r3,r3,-8
srdi r8,r5,7 /* page is copied in 128 byte strides */
diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S
index c1427b3634ec8341206d575e4643c7633ffc977d..383a5d0e9818a07758463bf3ddf29a835eb9af99 100644
--- a/arch/powerpc/platforms/pseries/hvCall.S
+++ b/arch/powerpc/platforms/pseries/hvCall.S
@@ -14,68 +14,94 @@
#define STK_PARM(i) (48 + ((i)-3)*8)
-#ifdef CONFIG_HCALL_STATS
+#ifdef CONFIG_TRACEPOINTS
+
+ .section ".toc","aw"
+
+ .globl hcall_tracepoint_refcount
+hcall_tracepoint_refcount:
+ .llong 0
+
+ .section ".text"
+
/*
* precall must preserve all registers. use unused STK_PARM()
- * areas to save snapshots and opcode.
+ * areas to save snapshots and opcode. We branch around this
+ * in early init (eg when populating the MMU hashtable) by using an
+ * unconditional cpu feature.
*/
-#define HCALL_INST_PRECALL \
- std r3,STK_PARM(r3)(r1); /* save opcode */ \
- mftb r0; /* get timebase and */ \
- std r0,STK_PARM(r5)(r1); /* save for later */ \
+#define HCALL_INST_PRECALL(FIRST_REG) \
BEGIN_FTR_SECTION; \
- mfspr r0,SPRN_PURR; /* get PURR and */ \
- std r0,STK_PARM(r6)(r1); /* save for later */ \
-END_FTR_SECTION_IFSET(CPU_FTR_PURR);
-
+ b 1f; \
+END_FTR_SECTION(0, 1); \
+ ld r12,hcall_tracepoint_refcount@toc(r2); \
+ cmpdi r12,0; \
+ beq+ 1f; \
+ mflr r0; \
+ std r3,STK_PARM(r3)(r1); \
+ std r4,STK_PARM(r4)(r1); \
+ std r5,STK_PARM(r5)(r1); \
+ std r6,STK_PARM(r6)(r1); \
+ std r7,STK_PARM(r7)(r1); \
+ std r8,STK_PARM(r8)(r1); \
+ std r9,STK_PARM(r9)(r1); \
+ std r10,STK_PARM(r10)(r1); \
+ std r0,16(r1); \
+ addi r4,r1,STK_PARM(FIRST_REG); \
+ stdu r1,-STACK_FRAME_OVERHEAD(r1); \
+ bl .__trace_hcall_entry; \
+ addi r1,r1,STACK_FRAME_OVERHEAD; \
+ ld r0,16(r1); \
+ ld r3,STK_PARM(r3)(r1); \
+ ld r4,STK_PARM(r4)(r1); \
+ ld r5,STK_PARM(r5)(r1); \
+ ld r6,STK_PARM(r6)(r1); \
+ ld r7,STK_PARM(r7)(r1); \
+ ld r8,STK_PARM(r8)(r1); \
+ ld r9,STK_PARM(r9)(r1); \
+ ld r10,STK_PARM(r10)(r1); \
+ mtlr r0; \
+1:
+
/*
* postcall is performed immediately before function return which
* allows liberal use of volatile registers. We branch around this
* in early init (eg when populating the MMU hashtable) by using an
* unconditional cpu feature.
*/
-#define HCALL_INST_POSTCALL \
+#define __HCALL_INST_POSTCALL \
BEGIN_FTR_SECTION; \
b 1f; \
END_FTR_SECTION(0, 1); \
- ld r4,STK_PARM(r3)(r1); /* validate opcode */ \
- cmpldi cr7,r4,MAX_HCALL_OPCODE; \
- bgt- cr7,1f; \
- \
- /* get time and PURR snapshots after hcall */ \
- mftb r7; /* timebase after */ \
-BEGIN_FTR_SECTION; \
- mfspr r8,SPRN_PURR; /* PURR after */ \
- ld r6,STK_PARM(r6)(r1); /* PURR before */ \
- subf r6,r6,r8; /* delta */ \
-END_FTR_SECTION_IFSET(CPU_FTR_PURR); \
- ld r5,STK_PARM(r5)(r1); /* timebase before */ \
- subf r5,r5,r7; /* time delta */ \
- \
- /* calculate address of stat structure r4 = opcode */ \
- srdi r4,r4,2; /* index into array */ \
- mulli r4,r4,HCALL_STAT_SIZE; \
- LOAD_REG_ADDR(r7, per_cpu__hcall_stats); \
- add r4,r4,r7; \
- ld r7,PACA_DATA_OFFSET(r13); /* per cpu offset */ \
- add r4,r4,r7; \
- \
- /* update stats */ \
- ld r7,HCALL_STAT_CALLS(r4); /* count */ \
- addi r7,r7,1; \
- std r7,HCALL_STAT_CALLS(r4); \
- ld r7,HCALL_STAT_TB(r4); /* timebase */ \
- add r7,r7,r5; \
- std r7,HCALL_STAT_TB(r4); \
-BEGIN_FTR_SECTION; \
- ld r7,HCALL_STAT_PURR(r4); /* PURR */ \
- add r7,r7,r6; \
- std r7,HCALL_STAT_PURR(r4); \
-END_FTR_SECTION_IFSET(CPU_FTR_PURR); \
+ ld r12,hcall_tracepoint_refcount@toc(r2); \
+ cmpdi r12,0; \
+ beq+ 1f; \
+ mflr r0; \
+ ld r6,STK_PARM(r3)(r1); \
+ std r3,STK_PARM(r3)(r1); \
+ mr r4,r3; \
+ mr r3,r6; \
+ std r0,16(r1); \
+ stdu r1,-STACK_FRAME_OVERHEAD(r1); \
+ bl .__trace_hcall_exit; \
+ addi r1,r1,STACK_FRAME_OVERHEAD; \
+ ld r0,16(r1); \
+ ld r3,STK_PARM(r3)(r1); \
+ mtlr r0; \
1:
+
+#define HCALL_INST_POSTCALL_NORETS \
+ li r5,0; \
+ __HCALL_INST_POSTCALL
+
+#define HCALL_INST_POSTCALL(BUFREG) \
+ mr r5,BUFREG; \
+ __HCALL_INST_POSTCALL
+
#else
-#define HCALL_INST_PRECALL
-#define HCALL_INST_POSTCALL
+#define HCALL_INST_PRECALL(FIRST_ARG)
+#define HCALL_INST_POSTCALL_NORETS
+#define HCALL_INST_POSTCALL(BUFREG)
#endif
.text
@@ -86,11 +112,11 @@ _GLOBAL(plpar_hcall_norets)
mfcr r0
stw r0,8(r1)
- HCALL_INST_PRECALL
+ HCALL_INST_PRECALL(r4)
HVSC /* invoke the hypervisor */
- HCALL_INST_POSTCALL
+ HCALL_INST_POSTCALL_NORETS
lwz r0,8(r1)
mtcrf 0xff,r0
@@ -102,7 +128,7 @@ _GLOBAL(plpar_hcall)
mfcr r0
stw r0,8(r1)
- HCALL_INST_PRECALL
+ HCALL_INST_PRECALL(r5)
std r4,STK_PARM(r4)(r1) /* Save ret buffer */
@@ -121,7 +147,7 @@ _GLOBAL(plpar_hcall)
std r6, 16(r12)
std r7, 24(r12)
- HCALL_INST_POSTCALL
+ HCALL_INST_POSTCALL(r12)
lwz r0,8(r1)
mtcrf 0xff,r0
@@ -168,7 +194,7 @@ _GLOBAL(plpar_hcall9)
mfcr r0
stw r0,8(r1)
- HCALL_INST_PRECALL
+ HCALL_INST_PRECALL(r5)
std r4,STK_PARM(r4)(r1) /* Save ret buffer */
@@ -196,7 +222,7 @@ _GLOBAL(plpar_hcall9)
std r11,56(r12)
std r0, 64(r12)
- HCALL_INST_POSTCALL
+ HCALL_INST_POSTCALL(r12)
lwz r0,8(r1)
mtcrf 0xff,r0
diff --git a/arch/powerpc/platforms/pseries/hvCall_inst.c b/arch/powerpc/platforms/pseries/hvCall_inst.c
index 3631a4f277eb2ab8aaf02676d7124d6a2a430e44..2f58c71b72593911694cc0cd6a33588a0259ef20 100644
--- a/arch/powerpc/platforms/pseries/hvCall_inst.c
+++ b/arch/powerpc/platforms/pseries/hvCall_inst.c
@@ -26,6 +26,7 @@
#include
#include
#include
+#include
DEFINE_PER_CPU(struct hcall_stats[HCALL_STAT_ARRAY_SIZE], hcall_stats);
@@ -100,6 +101,35 @@ static const struct file_operations hcall_inst_seq_fops = {
#define HCALL_ROOT_DIR "hcall_inst"
#define CPU_NAME_BUF_SIZE 32
+
+static void probe_hcall_entry(unsigned long opcode, unsigned long *args)
+{
+ struct hcall_stats *h;
+
+ if (opcode > MAX_HCALL_OPCODE)
+ return;
+
+ h = &get_cpu_var(hcall_stats)[opcode / 4];
+ h->tb_start = mftb();
+ h->purr_start = mfspr(SPRN_PURR);
+}
+
+static void probe_hcall_exit(unsigned long opcode, unsigned long retval,
+ unsigned long *retbuf)
+{
+ struct hcall_stats *h;
+
+ if (opcode > MAX_HCALL_OPCODE)
+ return;
+
+ h = &__get_cpu_var(hcall_stats)[opcode / 4];
+ h->num_calls++;
+ h->tb_total = mftb() - h->tb_start;
+ h->purr_total = mfspr(SPRN_PURR) - h->purr_start;
+
+ put_cpu_var(hcall_stats);
+}
+
static int __init hcall_inst_init(void)
{
struct dentry *hcall_root;
@@ -110,6 +140,14 @@ static int __init hcall_inst_init(void)
if (!firmware_has_feature(FW_FEATURE_LPAR))
return 0;
+ if (register_trace_hcall_entry(probe_hcall_entry))
+ return -EINVAL;
+
+ if (register_trace_hcall_exit(probe_hcall_exit)) {
+ unregister_trace_hcall_entry(probe_hcall_entry);
+ return -EINVAL;
+ }
+
hcall_root = debugfs_create_dir(HCALL_ROOT_DIR, NULL);
if (!hcall_root)
return -ENOMEM;
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 903eb9eec687471628c37e30026ae6aad5c35548..0707653612bacbc4d7dcf71f45bb4436275a7202 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -39,6 +39,7 @@
#include
#include
#include
+#include
#include "plpar_wrappers.h"
#include "pseries.h"
@@ -661,3 +662,35 @@ void arch_free_page(struct page *page, int order)
EXPORT_SYMBOL(arch_free_page);
#endif
+
+#ifdef CONFIG_TRACEPOINTS
+/*
+ * We optimise our hcall path by placing hcall_tracepoint_refcount
+ * directly in the TOC so we can check if the hcall tracepoints are
+ * enabled via a single load.
+ */
+
+/* NB: reg/unreg are called while guarded with the tracepoints_mutex */
+extern long hcall_tracepoint_refcount;
+
+void hcall_tracepoint_regfunc(void)
+{
+ hcall_tracepoint_refcount++;
+}
+
+void hcall_tracepoint_unregfunc(void)
+{
+ hcall_tracepoint_refcount--;
+}
+
+void __trace_hcall_entry(unsigned long opcode, unsigned long *args)
+{
+ trace_hcall_entry(opcode, args);
+}
+
+void __trace_hcall_exit(long opcode, unsigned long retval,
+ unsigned long *retbuf)
+{
+ trace_hcall_exit(opcode, retval, retbuf);
+}
+#endif
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 72ace9515a07a44525778899e1ea04b32b3accbc..178084b4377ccbebb2fb089ea1c17742f9addbfe 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -49,6 +49,7 @@ config X86
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_BZIP2
select HAVE_KERNEL_LZMA
+ select HAVE_HW_BREAKPOINT
select HAVE_ARCH_KMEMCHECK
config OUTPUT_FORMAT
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index d105f29bb6bb7c9b75fe3369d66f68f2f3ada5ba..7d0b681a132bb0b241717695e33f61c33e21cb46 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -186,6 +186,15 @@ config X86_DS_SELFTEST
config HAVE_MMIOTRACE_SUPPORT
def_bool y
+config X86_DECODER_SELFTEST
+ bool "x86 instruction decoder selftest"
+ depends on DEBUG_KERNEL
+ ---help---
+ Perform x86 instruction decoder selftests at build time.
+ This option is useful for checking the sanity of x86 instruction
+ decoder code.
+ If unsure, say "N".
+
#
# IO delay types:
#
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index d2d24c9ee64d926de80a249330e938095623ca85..78b32be55e9e7a82dafcdf96a5b59be4a26decd8 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -155,6 +155,9 @@ all: bzImage
KBUILD_IMAGE := $(boot)/bzImage
bzImage: vmlinux
+ifeq ($(CONFIG_X86_DECODER_SELFTEST),y)
+ $(Q)$(MAKE) $(build)=arch/x86/tools posttest
+endif
$(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
$(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
$(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/$@
diff --git a/arch/x86/include/asm/Kbuild b/arch/x86/include/asm/Kbuild
index 4a8e80cdcfa57a7faff08a2042a6b6fb64f5ae66..9f828f87ca35f418d24d4b7674477f643eea773d 100644
--- a/arch/x86/include/asm/Kbuild
+++ b/arch/x86/include/asm/Kbuild
@@ -10,6 +10,7 @@ header-y += ptrace-abi.h
header-y += sigcontext32.h
header-y += ucontext.h
header-y += processor-flags.h
+header-y += hw_breakpoint.h
unifdef-y += e820.h
unifdef-y += ist.h
diff --git a/arch/x86/include/asm/a.out-core.h b/arch/x86/include/asm/a.out-core.h
index bb70e397aa84c0e7cfa452c1efa9298b8a58c985..7a15588e45d47265391ec508c787d98b374aaeb9 100644
--- a/arch/x86/include/asm/a.out-core.h
+++ b/arch/x86/include/asm/a.out-core.h
@@ -17,6 +17,7 @@
#include
#include
+#include
/*
* fill in the user structure for an a.out core dump
@@ -32,14 +33,7 @@ static inline void aout_dump_thread(struct pt_regs *regs, struct user *dump)
>> PAGE_SHIFT;
dump->u_dsize -= dump->u_tsize;
dump->u_ssize = 0;
- dump->u_debugreg[0] = current->thread.debugreg0;
- dump->u_debugreg[1] = current->thread.debugreg1;
- dump->u_debugreg[2] = current->thread.debugreg2;
- dump->u_debugreg[3] = current->thread.debugreg3;
- dump->u_debugreg[4] = 0;
- dump->u_debugreg[5] = 0;
- dump->u_debugreg[6] = current->thread.debugreg6;
- dump->u_debugreg[7] = current->thread.debugreg7;
+ aout_dump_debugregs(dump);
if (dump->start_stack < TASK_SIZE)
dump->u_ssize = ((unsigned long)(TASK_SIZE - dump->start_stack))
diff --git a/arch/x86/include/asm/debugreg.h b/arch/x86/include/asm/debugreg.h
index 3ea6f37be9e2d29a69f6982bb3ddcc80554f1652..8240f76b531e0959be5a4fa823b1820d5d5952b5 100644
--- a/arch/x86/include/asm/debugreg.h
+++ b/arch/x86/include/asm/debugreg.h
@@ -18,6 +18,7 @@
#define DR_TRAP1 (0x2) /* db1 */
#define DR_TRAP2 (0x4) /* db2 */
#define DR_TRAP3 (0x8) /* db3 */
+#define DR_TRAP_BITS (DR_TRAP0|DR_TRAP1|DR_TRAP2|DR_TRAP3)
#define DR_STEP (0x4000) /* single-step */
#define DR_SWITCH (0x8000) /* task switch */
@@ -49,6 +50,8 @@
#define DR_LOCAL_ENABLE_SHIFT 0 /* Extra shift to the local enable bit */
#define DR_GLOBAL_ENABLE_SHIFT 1 /* Extra shift to the global enable bit */
+#define DR_LOCAL_ENABLE (0x1) /* Local enable for reg 0 */
+#define DR_GLOBAL_ENABLE (0x2) /* Global enable for reg 0 */
#define DR_ENABLE_SIZE 2 /* 2 enable bits per register */
#define DR_LOCAL_ENABLE_MASK (0x55) /* Set local bits for all 4 regs */
@@ -67,4 +70,34 @@
#define DR_LOCAL_SLOWDOWN (0x100) /* Local slow the pipeline */
#define DR_GLOBAL_SLOWDOWN (0x200) /* Global slow the pipeline */
+/*
+ * HW breakpoint additions
+ */
+#ifdef __KERNEL__
+
+DECLARE_PER_CPU(unsigned long, cpu_dr7);
+
+static inline void hw_breakpoint_disable(void)
+{
+ /* Zero the control register for HW Breakpoint */
+ set_debugreg(0UL, 7);
+
+ /* Zero-out the individual HW breakpoint address registers */
+ set_debugreg(0UL, 0);
+ set_debugreg(0UL, 1);
+ set_debugreg(0UL, 2);
+ set_debugreg(0UL, 3);
+}
+
+static inline int hw_breakpoint_active(void)
+{
+ return __get_cpu_var(cpu_dr7) & DR_GLOBAL_ENABLE_MASK;
+}
+
+extern void aout_dump_debugregs(struct user *dump);
+
+extern void hw_breakpoint_restore(void);
+
+#endif /* __KERNEL__ */
+
#endif /* _ASM_X86_DEBUGREG_H */
diff --git a/arch/x86/include/asm/hardirq.h b/arch/x86/include/asm/hardirq.h
index 82e3e8f010439cde125a3a75c4f0d65a7068b573..108eb6fd1ae7f6da8c94ca72197fdf7f4e3ec74d 100644
--- a/arch/x86/include/asm/hardirq.h
+++ b/arch/x86/include/asm/hardirq.h
@@ -20,11 +20,11 @@ typedef struct {
unsigned int irq_call_count;
unsigned int irq_tlb_count;
#endif
-#ifdef CONFIG_X86_MCE
+#ifdef CONFIG_X86_THERMAL_VECTOR
unsigned int irq_thermal_count;
-# ifdef CONFIG_X86_MCE_THRESHOLD
+#endif
+#ifdef CONFIG_X86_MCE_THRESHOLD
unsigned int irq_threshold_count;
-# endif
#endif
} ____cacheline_aligned irq_cpustat_t;
diff --git a/arch/x86/include/asm/hw_breakpoint.h b/arch/x86/include/asm/hw_breakpoint.h
new file mode 100644
index 0000000000000000000000000000000000000000..0675a7c4c20e82e168b88242dca1211ed8f52a62
--- /dev/null
+++ b/arch/x86/include/asm/hw_breakpoint.h
@@ -0,0 +1,73 @@
+#ifndef _I386_HW_BREAKPOINT_H
+#define _I386_HW_BREAKPOINT_H
+
+#ifdef __KERNEL__
+#define __ARCH_HW_BREAKPOINT_H
+
+/*
+ * The name should probably be something dealt in
+ * a higher level. While dealing with the user
+ * (display/resolving)
+ */
+struct arch_hw_breakpoint {
+ char *name; /* Contains name of the symbol to set bkpt */
+ unsigned long address;
+ u8 len;
+ u8 type;
+};
+
+#include
+#include
+#include
+
+/* Available HW breakpoint length encodings */
+#define X86_BREAKPOINT_LEN_1 0x40
+#define X86_BREAKPOINT_LEN_2 0x44
+#define X86_BREAKPOINT_LEN_4 0x4c
+#define X86_BREAKPOINT_LEN_EXECUTE 0x40
+
+#ifdef CONFIG_X86_64
+#define X86_BREAKPOINT_LEN_8 0x48
+#endif
+
+/* Available HW breakpoint type encodings */
+
+/* trigger on instruction execute */
+#define X86_BREAKPOINT_EXECUTE 0x80
+/* trigger on memory write */
+#define X86_BREAKPOINT_WRITE 0x81
+/* trigger on memory read or write */
+#define X86_BREAKPOINT_RW 0x83
+
+/* Total number of available HW breakpoint registers */
+#define HBP_NUM 4
+
+struct perf_event;
+struct pmu;
+
+extern int arch_check_va_in_userspace(unsigned long va, u8 hbp_len);
+extern int arch_validate_hwbkpt_settings(struct perf_event *bp,
+ struct task_struct *tsk);
+extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
+ unsigned long val, void *data);
+
+
+int arch_install_hw_breakpoint(struct perf_event *bp);
+void arch_uninstall_hw_breakpoint(struct perf_event *bp);
+void hw_breakpoint_pmu_read(struct perf_event *bp);
+void hw_breakpoint_pmu_unthrottle(struct perf_event *bp);
+
+extern void
+arch_fill_perf_breakpoint(struct perf_event *bp);
+
+unsigned long encode_dr7(int drnum, unsigned int len, unsigned int type);
+int decode_dr7(unsigned long dr7, int bpnum, unsigned *len, unsigned *type);
+
+extern int arch_bp_generic_fields(int x86_len, int x86_type,
+ int *gen_len, int *gen_type);
+
+extern struct pmu perf_ops_bp;
+
+#endif /* __KERNEL__ */
+#endif /* _I386_HW_BREAKPOINT_H */
+
diff --git a/arch/x86/include/asm/inat.h b/arch/x86/include/asm/inat.h
new file mode 100644
index 0000000000000000000000000000000000000000..205b063e3e32a091728592393422383a866a0777
--- /dev/null
+++ b/arch/x86/include/asm/inat.h
@@ -0,0 +1,220 @@
+#ifndef _ASM_X86_INAT_H
+#define _ASM_X86_INAT_H
+/*
+ * x86 instruction attributes
+ *
+ * Written by Masami Hiramatsu
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+#include
+
+/*
+ * Internal bits. Don't use bitmasks directly, because these bits are
+ * unstable. You should use checking functions.
+ */
+
+#define INAT_OPCODE_TABLE_SIZE 256
+#define INAT_GROUP_TABLE_SIZE 8
+
+/* Legacy last prefixes */
+#define INAT_PFX_OPNDSZ 1 /* 0x66 */ /* LPFX1 */
+#define INAT_PFX_REPE 2 /* 0xF3 */ /* LPFX2 */
+#define INAT_PFX_REPNE 3 /* 0xF2 */ /* LPFX3 */
+/* Other Legacy prefixes */
+#define INAT_PFX_LOCK 4 /* 0xF0 */
+#define INAT_PFX_CS 5 /* 0x2E */
+#define INAT_PFX_DS 6 /* 0x3E */
+#define INAT_PFX_ES 7 /* 0x26 */
+#define INAT_PFX_FS 8 /* 0x64 */
+#define INAT_PFX_GS 9 /* 0x65 */
+#define INAT_PFX_SS 10 /* 0x36 */
+#define INAT_PFX_ADDRSZ 11 /* 0x67 */
+/* x86-64 REX prefix */
+#define INAT_PFX_REX 12 /* 0x4X */
+/* AVX VEX prefixes */
+#define INAT_PFX_VEX2 13 /* 2-bytes VEX prefix */
+#define INAT_PFX_VEX3 14 /* 3-bytes VEX prefix */
+
+#define INAT_LSTPFX_MAX 3
+#define INAT_LGCPFX_MAX 11
+
+/* Immediate size */
+#define INAT_IMM_BYTE 1
+#define INAT_IMM_WORD 2
+#define INAT_IMM_DWORD 3
+#define INAT_IMM_QWORD 4
+#define INAT_IMM_PTR 5
+#define INAT_IMM_VWORD32 6
+#define INAT_IMM_VWORD 7
+
+/* Legacy prefix */
+#define INAT_PFX_OFFS 0
+#define INAT_PFX_BITS 4
+#define INAT_PFX_MAX ((1 << INAT_PFX_BITS) - 1)
+#define INAT_PFX_MASK (INAT_PFX_MAX << INAT_PFX_OFFS)
+/* Escape opcodes */
+#define INAT_ESC_OFFS (INAT_PFX_OFFS + INAT_PFX_BITS)
+#define INAT_ESC_BITS 2
+#define INAT_ESC_MAX ((1 << INAT_ESC_BITS) - 1)
+#define INAT_ESC_MASK (INAT_ESC_MAX << INAT_ESC_OFFS)
+/* Group opcodes (1-16) */
+#define INAT_GRP_OFFS (INAT_ESC_OFFS + INAT_ESC_BITS)
+#define INAT_GRP_BITS 5
+#define INAT_GRP_MAX ((1 << INAT_GRP_BITS) - 1)
+#define INAT_GRP_MASK (INAT_GRP_MAX << INAT_GRP_OFFS)
+/* Immediates */
+#define INAT_IMM_OFFS (INAT_GRP_OFFS + INAT_GRP_BITS)
+#define INAT_IMM_BITS 3
+#define INAT_IMM_MASK (((1 << INAT_IMM_BITS) - 1) << INAT_IMM_OFFS)
+/* Flags */
+#define INAT_FLAG_OFFS (INAT_IMM_OFFS + INAT_IMM_BITS)
+#define INAT_MODRM (1 << (INAT_FLAG_OFFS))
+#define INAT_FORCE64 (1 << (INAT_FLAG_OFFS + 1))
+#define INAT_SCNDIMM (1 << (INAT_FLAG_OFFS + 2))
+#define INAT_MOFFSET (1 << (INAT_FLAG_OFFS + 3))
+#define INAT_VARIANT (1 << (INAT_FLAG_OFFS + 4))
+#define INAT_VEXOK (1 << (INAT_FLAG_OFFS + 5))
+#define INAT_VEXONLY (1 << (INAT_FLAG_OFFS + 6))
+/* Attribute making macros for attribute tables */
+#define INAT_MAKE_PREFIX(pfx) (pfx << INAT_PFX_OFFS)
+#define INAT_MAKE_ESCAPE(esc) (esc << INAT_ESC_OFFS)
+#define INAT_MAKE_GROUP(grp) ((grp << INAT_GRP_OFFS) | INAT_MODRM)
+#define INAT_MAKE_IMM(imm) (imm << INAT_IMM_OFFS)
+
+/* Attribute search APIs */
+extern insn_attr_t inat_get_opcode_attribute(insn_byte_t opcode);
+extern insn_attr_t inat_get_escape_attribute(insn_byte_t opcode,
+ insn_byte_t last_pfx,
+ insn_attr_t esc_attr);
+extern insn_attr_t inat_get_group_attribute(insn_byte_t modrm,
+ insn_byte_t last_pfx,
+ insn_attr_t esc_attr);
+extern insn_attr_t inat_get_avx_attribute(insn_byte_t opcode,
+ insn_byte_t vex_m,
+ insn_byte_t vex_pp);
+
+/* Attribute checking functions */
+static inline int inat_is_legacy_prefix(insn_attr_t attr)
+{
+ attr &= INAT_PFX_MASK;
+ return attr && attr <= INAT_LGCPFX_MAX;
+}
+
+static inline int inat_is_address_size_prefix(insn_attr_t attr)
+{
+ return (attr & INAT_PFX_MASK) == INAT_PFX_ADDRSZ;
+}
+
+static inline int inat_is_operand_size_prefix(insn_attr_t attr)
+{
+ return (attr & INAT_PFX_MASK) == INAT_PFX_OPNDSZ;
+}
+
+static inline int inat_is_rex_prefix(insn_attr_t attr)
+{
+ return (attr & INAT_PFX_MASK) == INAT_PFX_REX;
+}
+
+static inline int inat_last_prefix_id(insn_attr_t attr)
+{
+ if ((attr & INAT_PFX_MASK) > INAT_LSTPFX_MAX)
+ return 0;
+ else
+ return attr & INAT_PFX_MASK;
+}
+
+static inline int inat_is_vex_prefix(insn_attr_t attr)
+{
+ attr &= INAT_PFX_MASK;
+ return attr == INAT_PFX_VEX2 || attr == INAT_PFX_VEX3;
+}
+
+static inline int inat_is_vex3_prefix(insn_attr_t attr)
+{
+ return (attr & INAT_PFX_MASK) == INAT_PFX_VEX3;
+}
+
+static inline int inat_is_escape(insn_attr_t attr)
+{
+ return attr & INAT_ESC_MASK;
+}
+
+static inline int inat_escape_id(insn_attr_t attr)
+{
+ return (attr & INAT_ESC_MASK) >> INAT_ESC_OFFS;
+}
+
+static inline int inat_is_group(insn_attr_t attr)
+{
+ return attr & INAT_GRP_MASK;
+}
+
+static inline int inat_group_id(insn_attr_t attr)
+{
+ return (attr & INAT_GRP_MASK) >> INAT_GRP_OFFS;
+}
+
+static inline int inat_group_common_attribute(insn_attr_t attr)
+{
+ return attr & ~INAT_GRP_MASK;
+}
+
+static inline int inat_has_immediate(insn_attr_t attr)
+{
+ return attr & INAT_IMM_MASK;
+}
+
+static inline int inat_immediate_size(insn_attr_t attr)
+{
+ return (attr & INAT_IMM_MASK) >> INAT_IMM_OFFS;
+}
+
+static inline int inat_has_modrm(insn_attr_t attr)
+{
+ return attr & INAT_MODRM;
+}
+
+static inline int inat_is_force64(insn_attr_t attr)
+{
+ return attr & INAT_FORCE64;
+}
+
+static inline int inat_has_second_immediate(insn_attr_t attr)
+{
+ return attr & INAT_SCNDIMM;
+}
+
+static inline int inat_has_moffset(insn_attr_t attr)
+{
+ return attr & INAT_MOFFSET;
+}
+
+static inline int inat_has_variant(insn_attr_t attr)
+{
+ return attr & INAT_VARIANT;
+}
+
+static inline int inat_accept_vex(insn_attr_t attr)
+{
+ return attr & INAT_VEXOK;
+}
+
+static inline int inat_must_vex(insn_attr_t attr)
+{
+ return attr & INAT_VEXONLY;
+}
+#endif
diff --git a/arch/x86/include/asm/inat_types.h b/arch/x86/include/asm/inat_types.h
new file mode 100644
index 0000000000000000000000000000000000000000..cb3c20ce39cf027416d47bf12eb94e7651b28c29
--- /dev/null
+++ b/arch/x86/include/asm/inat_types.h
@@ -0,0 +1,29 @@
+#ifndef _ASM_X86_INAT_TYPES_H
+#define _ASM_X86_INAT_TYPES_H
+/*
+ * x86 instruction attributes
+ *
+ * Written by Masami Hiramatsu
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+/* Instruction attributes */
+typedef unsigned int insn_attr_t;
+typedef unsigned char insn_byte_t;
+typedef signed int insn_value_t;
+
+#endif
diff --git a/arch/x86/include/asm/insn.h b/arch/x86/include/asm/insn.h
new file mode 100644
index 0000000000000000000000000000000000000000..96c2e0ad04ca04f94d2a7974007dd647a4142549
--- /dev/null
+++ b/arch/x86/include/asm/insn.h
@@ -0,0 +1,184 @@
+#ifndef _ASM_X86_INSN_H
+#define _ASM_X86_INSN_H
+/*
+ * x86 instruction analysis
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) IBM Corporation, 2009
+ */
+
+/* insn_attr_t is defined in inat.h */
+#include
+
+struct insn_field {
+ union {
+ insn_value_t value;
+ insn_byte_t bytes[4];
+ };
+ /* !0 if we've run insn_get_xxx() for this field */
+ unsigned char got;
+ unsigned char nbytes;
+};
+
+struct insn {
+ struct insn_field prefixes; /*
+ * Prefixes
+ * prefixes.bytes[3]: last prefix
+ */
+ struct insn_field rex_prefix; /* REX prefix */
+ struct insn_field vex_prefix; /* VEX prefix */
+ struct insn_field opcode; /*
+ * opcode.bytes[0]: opcode1
+ * opcode.bytes[1]: opcode2
+ * opcode.bytes[2]: opcode3
+ */
+ struct insn_field modrm;
+ struct insn_field sib;
+ struct insn_field displacement;
+ union {
+ struct insn_field immediate;
+ struct insn_field moffset1; /* for 64bit MOV */
+ struct insn_field immediate1; /* for 64bit imm or off16/32 */
+ };
+ union {
+ struct insn_field moffset2; /* for 64bit MOV */
+ struct insn_field immediate2; /* for 64bit imm or seg16 */
+ };
+
+ insn_attr_t attr;
+ unsigned char opnd_bytes;
+ unsigned char addr_bytes;
+ unsigned char length;
+ unsigned char x86_64;
+
+ const insn_byte_t *kaddr; /* kernel address of insn to analyze */
+ const insn_byte_t *next_byte;
+};
+
+#define X86_MODRM_MOD(modrm) (((modrm) & 0xc0) >> 6)
+#define X86_MODRM_REG(modrm) (((modrm) & 0x38) >> 3)
+#define X86_MODRM_RM(modrm) ((modrm) & 0x07)
+
+#define X86_SIB_SCALE(sib) (((sib) & 0xc0) >> 6)
+#define X86_SIB_INDEX(sib) (((sib) & 0x38) >> 3)
+#define X86_SIB_BASE(sib) ((sib) & 0x07)
+
+#define X86_REX_W(rex) ((rex) & 8)
+#define X86_REX_R(rex) ((rex) & 4)
+#define X86_REX_X(rex) ((rex) & 2)
+#define X86_REX_B(rex) ((rex) & 1)
+
+/* VEX bit flags */
+#define X86_VEX_W(vex) ((vex) & 0x80) /* VEX3 Byte2 */
+#define X86_VEX_R(vex) ((vex) & 0x80) /* VEX2/3 Byte1 */
+#define X86_VEX_X(vex) ((vex) & 0x40) /* VEX3 Byte1 */
+#define X86_VEX_B(vex) ((vex) & 0x20) /* VEX3 Byte1 */
+#define X86_VEX_L(vex) ((vex) & 0x04) /* VEX3 Byte2, VEX2 Byte1 */
+/* VEX bit fields */
+#define X86_VEX3_M(vex) ((vex) & 0x1f) /* VEX3 Byte1 */
+#define X86_VEX2_M 1 /* VEX2.M always 1 */
+#define X86_VEX_V(vex) (((vex) & 0x78) >> 3) /* VEX3 Byte2, VEX2 Byte1 */
+#define X86_VEX_P(vex) ((vex) & 0x03) /* VEX3 Byte2, VEX2 Byte1 */
+#define X86_VEX_M_MAX 0x1f /* VEX3.M Maximum value */
+
+/* The last prefix is needed for two-byte and three-byte opcodes */
+static inline insn_byte_t insn_last_prefix(struct insn *insn)
+{
+ return insn->prefixes.bytes[3];
+}
+
+extern void insn_init(struct insn *insn, const void *kaddr, int x86_64);
+extern void insn_get_prefixes(struct insn *insn);
+extern void insn_get_opcode(struct insn *insn);
+extern void insn_get_modrm(struct insn *insn);
+extern void insn_get_sib(struct insn *insn);
+extern void insn_get_displacement(struct insn *insn);
+extern void insn_get_immediate(struct insn *insn);
+extern void insn_get_length(struct insn *insn);
+
+/* Attribute will be determined after getting ModRM (for opcode groups) */
+static inline void insn_get_attribute(struct insn *insn)
+{
+ insn_get_modrm(insn);
+}
+
+/* Instruction uses RIP-relative addressing */
+extern int insn_rip_relative(struct insn *insn);
+
+/* Init insn for kernel text */
+static inline void kernel_insn_init(struct insn *insn, const void *kaddr)
+{
+#ifdef CONFIG_X86_64
+ insn_init(insn, kaddr, 1);
+#else /* CONFIG_X86_32 */
+ insn_init(insn, kaddr, 0);
+#endif
+}
+
+static inline int insn_is_avx(struct insn *insn)
+{
+ if (!insn->prefixes.got)
+ insn_get_prefixes(insn);
+ return (insn->vex_prefix.value != 0);
+}
+
+static inline insn_byte_t insn_vex_m_bits(struct insn *insn)
+{
+ if (insn->vex_prefix.nbytes == 2) /* 2 bytes VEX */
+ return X86_VEX2_M;
+ else
+ return X86_VEX3_M(insn->vex_prefix.bytes[1]);
+}
+
+static inline insn_byte_t insn_vex_p_bits(struct insn *insn)
+{
+ if (insn->vex_prefix.nbytes == 2) /* 2 bytes VEX */
+ return X86_VEX_P(insn->vex_prefix.bytes[1]);
+ else
+ return X86_VEX_P(insn->vex_prefix.bytes[2]);
+}
+
+/* Offset of each field from kaddr */
+static inline int insn_offset_rex_prefix(struct insn *insn)
+{
+ return insn->prefixes.nbytes;
+}
+static inline int insn_offset_vex_prefix(struct insn *insn)
+{
+ return insn_offset_rex_prefix(insn) + insn->rex_prefix.nbytes;
+}
+static inline int insn_offset_opcode(struct insn *insn)
+{
+ return insn_offset_vex_prefix(insn) + insn->vex_prefix.nbytes;
+}
+static inline int insn_offset_modrm(struct insn *insn)
+{
+ return insn_offset_opcode(insn) + insn->opcode.nbytes;
+}
+static inline int insn_offset_sib(struct insn *insn)
+{
+ return insn_offset_modrm(insn) + insn->modrm.nbytes;
+}
+static inline int insn_offset_displacement(struct insn *insn)
+{
+ return insn_offset_sib(insn) + insn->sib.nbytes;
+}
+static inline int insn_offset_immediate(struct insn *insn)
+{
+ return insn_offset_displacement(insn) + insn->displacement.nbytes;
+}
+
+#endif /* _ASM_X86_INSN_H */
diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index f1363b72364f3e2a53609e77e52379f7f3998b3a..858baa061cfce365a51e48bf162f92cb00a8e8ba 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -108,6 +108,8 @@ struct mce_log {
#define K8_MCE_THRESHOLD_BANK_5 (MCE_THRESHOLD_BASE + 5 * 9)
#define K8_MCE_THRESHOLD_DRAM_ECC (MCE_THRESHOLD_BANK_4 + 0)
+extern struct atomic_notifier_head x86_mce_decoder_chain;
+
#ifdef __KERNEL__
#include
@@ -118,9 +120,11 @@ extern int mce_disabled;
extern int mce_p5_enabled;
#ifdef CONFIG_X86_MCE
-void mcheck_init(struct cpuinfo_x86 *c);
+int mcheck_init(void);
+void mcheck_cpu_init(struct cpuinfo_x86 *c);
#else
-static inline void mcheck_init(struct cpuinfo_x86 *c) {}
+static inline int mcheck_init(void) { return 0; }
+static inline void mcheck_cpu_init(struct cpuinfo_x86 *c) {}
#endif
#ifdef CONFIG_X86_ANCIENT_MCE
@@ -214,5 +218,11 @@ void intel_init_thermal(struct cpuinfo_x86 *c);
void mce_log_therm_throt_event(__u64 status);
+#ifdef CONFIG_X86_THERMAL_VECTOR
+extern void mcheck_intel_therm_init(void);
+#else
+static inline void mcheck_intel_therm_init(void) { }
+#endif
+
#endif /* __KERNEL__ */
#endif /* _ASM_X86_MCE_H */
diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h
index ad7ce3fd5065a8354035233de59fd1ba21b8d0e8..8d9f8548a870498e94e3de1ced5811692238962c 100644
--- a/arch/x86/include/asm/perf_event.h
+++ b/arch/x86/include/asm/perf_event.h
@@ -28,9 +28,20 @@
*/
#define ARCH_PERFMON_EVENT_MASK 0xffff
+/*
+ * filter mask to validate fixed counter events.
+ * the following filters disqualify for fixed counters:
+ * - inv
+ * - edge
+ * - cnt-mask
+ * The other filters are supported by fixed counters.
+ * The any-thread option is supported starting with v3.
+ */
+#define ARCH_PERFMON_EVENT_FILTER_MASK 0xff840000
+
#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL 0x3c
#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK (0x00 << 8)
-#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX 0
+#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX 0
#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_PRESENT \
(1 << (ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX))
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index c9786480f0fe4d074e9575557316d7f4b358be4b..6f8ec1c37e0a8c999f9344082465fd2c9b4570f1 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -30,6 +30,7 @@ struct mm_struct;
#include
#include
+#define HBP_NUM 4
/*
* Default implementation of macro that returns current
* instruction pointer ("program counter").
@@ -422,6 +423,8 @@ extern unsigned int xstate_size;
extern void free_thread_xstate(struct task_struct *);
extern struct kmem_cache *task_xstate_cachep;
+struct perf_event;
+
struct thread_struct {
/* Cached TLS descriptors: */
struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
@@ -443,13 +446,10 @@ struct thread_struct {
unsigned long fs;
#endif
unsigned long gs;
- /* Hardware debugging registers: */
- unsigned long debugreg0;
- unsigned long debugreg1;
- unsigned long debugreg2;
- unsigned long debugreg3;
- unsigned long debugreg6;
- unsigned long debugreg7;
+ /* Save middle states of ptrace breakpoints */
+ struct perf_event *ptrace_bps[HBP_NUM];
+ /* Debug status used for traps, single steps, etc... */
+ unsigned long debugreg6;
/* Fault info: */
unsigned long cr2;
unsigned long trap_no;
diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h
index 0f0d908349aa3f375e87f68802cbcb2e7753f725..3d11fd0f44c5f4f86c060207417710db58758094 100644
--- a/arch/x86/include/asm/ptrace.h
+++ b/arch/x86/include/asm/ptrace.h
@@ -7,6 +7,7 @@
#ifdef __KERNEL__
#include
+#include
#endif
#ifndef __ASSEMBLY__
@@ -216,6 +217,67 @@ static inline unsigned long user_stack_pointer(struct pt_regs *regs)
return regs->sp;
}
+/* Query offset/name of register from its name/offset */
+extern int regs_query_register_offset(const char *name);
+extern const char *regs_query_register_name(unsigned int offset);
+#define MAX_REG_OFFSET (offsetof(struct pt_regs, ss))
+
+/**
+ * regs_get_register() - get register value from its offset
+ * @regs: pt_regs from which register value is gotten.
+ * @offset: offset number of the register.
+ *
+ * regs_get_register returns the value of a register. The @offset is the
+ * offset of the register in struct pt_regs address which specified by @regs.
+ * If @offset is bigger than MAX_REG_OFFSET, this returns 0.
+ */
+static inline unsigned long regs_get_register(struct pt_regs *regs,
+ unsigned int offset)
+{
+ if (unlikely(offset > MAX_REG_OFFSET))
+ return 0;
+ return *(unsigned long *)((unsigned long)regs + offset);
+}
+
+/**
+ * regs_within_kernel_stack() - check the address in the stack
+ * @regs: pt_regs which contains kernel stack pointer.
+ * @addr: address which is checked.
+ *
+ * regs_within_kernel_stack() checks @addr is within the kernel stack page(s).
+ * If @addr is within the kernel stack, it returns true. If not, returns false.
+ */
+static inline int regs_within_kernel_stack(struct pt_regs *regs,
+ unsigned long addr)
+{
+ return ((addr & ~(THREAD_SIZE - 1)) ==
+ (kernel_stack_pointer(regs) & ~(THREAD_SIZE - 1)));
+}
+
+/**
+ * regs_get_kernel_stack_nth() - get Nth entry of the stack
+ * @regs: pt_regs which contains kernel stack pointer.
+ * @n: stack entry number.
+ *
+ * regs_get_kernel_stack_nth() returns @n th entry of the kernel stack which
+ * is specified by @regs. If the @n th entry is NOT in the kernel stack,
+ * this returns 0.
+ */
+static inline unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs,
+ unsigned int n)
+{
+ unsigned long *addr = (unsigned long *)kernel_stack_pointer(regs);
+ addr += n;
+ if (regs_within_kernel_stack(regs, (unsigned long)addr))
+ return *addr;
+ else
+ return 0;
+}
+
+/* Get Nth argument at function call */
+extern unsigned long regs_get_argument_nth(struct pt_regs *regs,
+ unsigned int n);
+
/*
* These are defined as per linux/ptrace.h, which see.
*/
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index d8e5d0cdd678d3b4396c0e7f859b7c3f6ac0d212..4f2e66e29ecc5cc35e749f18e194b2ad11f398d2 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -40,7 +40,7 @@ obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o
obj-y += bootflag.o e820.o
obj-y += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o
-obj-y += alternative.o i8253.o pci-nommu.o
+obj-y += alternative.o i8253.o pci-nommu.o hw_breakpoint.o
obj-y += tsc.o io_delay.o rtc.o
obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index 68537e957a9b2cd621185e275103c201af9502e6..1d2cb383410ebef206fb48e2ccecbe8fd03f90ce 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -5,6 +5,7 @@
# Don't trace early stages of a secondary CPU boot
ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_common.o = -pg
+CFLAGS_REMOVE_perf_event.o = -pg
endif
# Make sure load_percpu_segment has no stackprotector
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index cc25c2b4a567c2ca3e020127cefe87b2778f02ee..9053be5d95cd4fb21f4aae94f2e7335af6a6f83a 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -837,10 +837,8 @@ static void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
boot_cpu_data.x86_capability[i] &= c->x86_capability[i];
}
-#ifdef CONFIG_X86_MCE
/* Init Machine Check Exception if available. */
- mcheck_init(c);
-#endif
+ mcheck_cpu_init(c);
select_idle_routine(c);
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 721a77ca811536eb2129e02449701948fe9aa9c3..0bcaa3875863aaefa98942e00d93ae5be0fecdb6 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -46,6 +46,9 @@
#include "mce-internal.h"
+#define CREATE_TRACE_POINTS
+#include
+
int mce_disabled __read_mostly;
#define MISC_MCELOG_MINOR 227
@@ -85,18 +88,26 @@ static DECLARE_WAIT_QUEUE_HEAD(mce_wait);
static DEFINE_PER_CPU(struct mce, mces_seen);
static int cpu_missing;
-static void default_decode_mce(struct mce *m)
+/*
+ * CPU/chipset specific EDAC code can register a notifier call here to print
+ * MCE errors in a human-readable form.
+ */
+ATOMIC_NOTIFIER_HEAD(x86_mce_decoder_chain);
+EXPORT_SYMBOL_GPL(x86_mce_decoder_chain);
+
+static int default_decode_mce(struct notifier_block *nb, unsigned long val,
+ void *data)
{
pr_emerg("No human readable MCE decoding support on this CPU type.\n");
pr_emerg("Run the message through 'mcelog --ascii' to decode.\n");
+
+ return NOTIFY_STOP;
}
-/*
- * CPU/chipset specific EDAC code can register a callback here to print
- * MCE errors in a human-readable form:
- */
-void (*x86_mce_decode_callback)(struct mce *m) = default_decode_mce;
-EXPORT_SYMBOL(x86_mce_decode_callback);
+static struct notifier_block mce_dec_nb = {
+ .notifier_call = default_decode_mce,
+ .priority = -1,
+};
/* MCA banks polled by the period polling timer for corrected events */
DEFINE_PER_CPU(mce_banks_t, mce_poll_banks) = {
@@ -141,6 +152,9 @@ void mce_log(struct mce *mce)
{
unsigned next, entry;
+ /* Emit the trace record: */
+ trace_mce_record(mce);
+
mce->finished = 0;
wmb();
for (;;) {
@@ -204,9 +218,9 @@ static void print_mce(struct mce *m)
/*
* Print out human-readable details about the MCE error,
- * (if the CPU has an implementation for that):
+ * (if the CPU has an implementation for that)
*/
- x86_mce_decode_callback(m);
+ atomic_notifier_call_chain(&x86_mce_decoder_chain, 0, m);
}
static void print_mce_head(void)
@@ -1122,7 +1136,7 @@ static int check_interval = 5 * 60; /* 5 minutes */
static DEFINE_PER_CPU(int, mce_next_interval); /* in jiffies */
static DEFINE_PER_CPU(struct timer_list, mce_timer);
-static void mcheck_timer(unsigned long data)
+static void mce_start_timer(unsigned long data)
{
struct timer_list *t = &per_cpu(mce_timer, data);
int *n;
@@ -1187,7 +1201,7 @@ int mce_notify_irq(void)
}
EXPORT_SYMBOL_GPL(mce_notify_irq);
-static int mce_banks_init(void)
+static int __cpuinit __mcheck_cpu_mce_banks_init(void)
{
int i;
@@ -1206,7 +1220,7 @@ static int mce_banks_init(void)
/*
* Initialize Machine Checks for a CPU.
*/
-static int __cpuinit mce_cap_init(void)
+static int __cpuinit __mcheck_cpu_cap_init(void)
{
unsigned b;
u64 cap;
@@ -1228,7 +1242,7 @@ static int __cpuinit mce_cap_init(void)
WARN_ON(banks != 0 && b != banks);
banks = b;
if (!mce_banks) {
- int err = mce_banks_init();
+ int err = __mcheck_cpu_mce_banks_init();
if (err)
return err;
@@ -1244,7 +1258,7 @@ static int __cpuinit mce_cap_init(void)
return 0;
}
-static void mce_init(void)
+static void __mcheck_cpu_init_generic(void)
{
mce_banks_t all_banks;
u64 cap;
@@ -1273,7 +1287,7 @@ static void mce_init(void)
}
/* Add per CPU specific workarounds here */
-static int __cpuinit mce_cpu_quirks(struct cpuinfo_x86 *c)
+static int __cpuinit __mcheck_cpu_apply_quirks(struct cpuinfo_x86 *c)
{
if (c->x86_vendor == X86_VENDOR_UNKNOWN) {
pr_info("MCE: unknown CPU type - not enabling MCE support.\n");
@@ -1341,7 +1355,7 @@ static int __cpuinit mce_cpu_quirks(struct cpuinfo_x86 *c)
return 0;
}
-static void __cpuinit mce_ancient_init(struct cpuinfo_x86 *c)
+static void __cpuinit __mcheck_cpu_ancient_init(struct cpuinfo_x86 *c)
{
if (c->x86 != 5)
return;
@@ -1355,7 +1369,7 @@ static void __cpuinit mce_ancient_init(struct cpuinfo_x86 *c)
}
}
-static void mce_cpu_features(struct cpuinfo_x86 *c)
+static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c)
{
switch (c->x86_vendor) {
case X86_VENDOR_INTEL:
@@ -1369,7 +1383,7 @@ static void mce_cpu_features(struct cpuinfo_x86 *c)
}
}
-static void mce_init_timer(void)
+static void __mcheck_cpu_init_timer(void)
{
struct timer_list *t = &__get_cpu_var(mce_timer);
int *n = &__get_cpu_var(mce_next_interval);
@@ -1380,7 +1394,7 @@ static void mce_init_timer(void)
*n = check_interval * HZ;
if (!*n)
return;
- setup_timer(t, mcheck_timer, smp_processor_id());
+ setup_timer(t, mce_start_timer, smp_processor_id());
t->expires = round_jiffies(jiffies + *n);
add_timer_on(t, smp_processor_id());
}
@@ -1400,27 +1414,28 @@ void (*machine_check_vector)(struct pt_regs *, long error_code) =
* Called for each booted CPU to set up machine checks.
* Must be called with preempt off:
*/
-void __cpuinit mcheck_init(struct cpuinfo_x86 *c)
+void __cpuinit mcheck_cpu_init(struct cpuinfo_x86 *c)
{
if (mce_disabled)
return;
- mce_ancient_init(c);
+ __mcheck_cpu_ancient_init(c);
if (!mce_available(c))
return;
- if (mce_cap_init() < 0 || mce_cpu_quirks(c) < 0) {
+ if (__mcheck_cpu_cap_init() < 0 || __mcheck_cpu_apply_quirks(c) < 0) {
mce_disabled = 1;
return;
}
machine_check_vector = do_machine_check;
- mce_init();
- mce_cpu_features(c);
- mce_init_timer();
+ __mcheck_cpu_init_generic();
+ __mcheck_cpu_init_vendor(c);
+ __mcheck_cpu_init_timer();
INIT_WORK(&__get_cpu_var(mce_work), mce_process_work);
+
}
/*
@@ -1640,6 +1655,15 @@ static int __init mcheck_enable(char *str)
}
__setup("mce", mcheck_enable);
+int __init mcheck_init(void)
+{
+ atomic_notifier_chain_register(&x86_mce_decoder_chain, &mce_dec_nb);
+
+ mcheck_intel_therm_init();
+
+ return 0;
+}
+
/*
* Sysfs support
*/
@@ -1648,7 +1672,7 @@ __setup("mce", mcheck_enable);
* Disable machine checks on suspend and shutdown. We can't really handle
* them later.
*/
-static int mce_disable(void)
+static int mce_disable_error_reporting(void)
{
int i;
@@ -1663,12 +1687,12 @@ static int mce_disable(void)
static int mce_suspend(struct sys_device *dev, pm_message_t state)
{
- return mce_disable();
+ return mce_disable_error_reporting();
}
static int mce_shutdown(struct sys_device *dev)
{
- return mce_disable();
+ return mce_disable_error_reporting();
}
/*
@@ -1678,8 +1702,8 @@ static int mce_shutdown(struct sys_device *dev)
*/
static int mce_resume(struct sys_device *dev)
{
- mce_init();
- mce_cpu_features(¤t_cpu_data);
+ __mcheck_cpu_init_generic();
+ __mcheck_cpu_init_vendor(¤t_cpu_data);
return 0;
}
@@ -1689,8 +1713,8 @@ static void mce_cpu_restart(void *data)
del_timer_sync(&__get_cpu_var(mce_timer));
if (!mce_available(¤t_cpu_data))
return;
- mce_init();
- mce_init_timer();
+ __mcheck_cpu_init_generic();
+ __mcheck_cpu_init_timer();
}
/* Reinit MCEs after user configuration changes */
@@ -1716,7 +1740,7 @@ static void mce_enable_ce(void *all)
cmci_reenable();
cmci_recheck();
if (all)
- mce_init_timer();
+ __mcheck_cpu_init_timer();
}
static struct sysdev_class mce_sysclass = {
@@ -1929,13 +1953,14 @@ static __cpuinit void mce_remove_device(unsigned int cpu)
}
/* Make sure there are no machine checks on offlined CPUs. */
-static void mce_disable_cpu(void *h)
+static void __cpuinit mce_disable_cpu(void *h)
{
unsigned long action = *(unsigned long *)h;
int i;
if (!mce_available(¤t_cpu_data))
return;
+
if (!(action & CPU_TASKS_FROZEN))
cmci_clear();
for (i = 0; i < banks; i++) {
@@ -1946,7 +1971,7 @@ static void mce_disable_cpu(void *h)
}
}
-static void mce_reenable_cpu(void *h)
+static void __cpuinit mce_reenable_cpu(void *h)
{
unsigned long action = *(unsigned long *)h;
int i;
@@ -2025,7 +2050,7 @@ static __init void mce_init_banks(void)
}
}
-static __init int mce_init_device(void)
+static __init int mcheck_init_device(void)
{
int err;
int i = 0;
@@ -2053,7 +2078,7 @@ static __init int mce_init_device(void)
return err;
}
-device_initcall(mce_init_device);
+device_initcall(mcheck_init_device);
/*
* Old style boot options parsing. Only for compatibility.
@@ -2101,7 +2126,7 @@ static int fake_panic_set(void *data, u64 val)
DEFINE_SIMPLE_ATTRIBUTE(fake_panic_fops, fake_panic_get,
fake_panic_set, "%llu\n");
-static int __init mce_debugfs_init(void)
+static int __init mcheck_debugfs_init(void)
{
struct dentry *dmce, *ffake_panic;
@@ -2115,5 +2140,5 @@ static int __init mce_debugfs_init(void)
return 0;
}
-late_initcall(mce_debugfs_init);
+late_initcall(mcheck_debugfs_init);
#endif
diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c
index b3a1dba75330a4891b7d49739bd8507076a642da..4fef985fc221622623473c25e9abadda053095c9 100644
--- a/arch/x86/kernel/cpu/mcheck/therm_throt.c
+++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c
@@ -49,6 +49,8 @@ static DEFINE_PER_CPU(struct thermal_state, thermal_state);
static atomic_t therm_throt_en = ATOMIC_INIT(0);
+static u32 lvtthmr_init __read_mostly;
+
#ifdef CONFIG_SYSFS
#define define_therm_throt_sysdev_one_ro(_name) \
static SYSDEV_ATTR(_name, 0444, therm_throt_sysdev_show_##_name, NULL)
@@ -254,6 +256,18 @@ asmlinkage void smp_thermal_interrupt(struct pt_regs *regs)
ack_APIC_irq();
}
+void __init mcheck_intel_therm_init(void)
+{
+ /*
+ * This function is only called on boot CPU. Save the init thermal
+ * LVT value on BSP and use that value to restore APs' thermal LVT
+ * entry BIOS programmed later
+ */
+ if (cpu_has(&boot_cpu_data, X86_FEATURE_ACPI) &&
+ cpu_has(&boot_cpu_data, X86_FEATURE_ACC))
+ lvtthmr_init = apic_read(APIC_LVTTHMR);
+}
+
void intel_init_thermal(struct cpuinfo_x86 *c)
{
unsigned int cpu = smp_processor_id();
@@ -270,7 +284,20 @@ void intel_init_thermal(struct cpuinfo_x86 *c)
* since it might be delivered via SMI already:
*/
rdmsr(MSR_IA32_MISC_ENABLE, l, h);
- h = apic_read(APIC_LVTTHMR);
+
+ /*
+ * The initial value of thermal LVT entries on all APs always reads
+ * 0x10000 because APs are woken up by BSP issuing INIT-SIPI-SIPI
+ * sequence to them and LVT registers are reset to 0s except for
+ * the mask bits which are set to 1s when APs receive INIT IPI.
+ * Always restore the value that BIOS has programmed on AP based on
+ * BSP's info we saved since BIOS is always setting the same value
+ * for all threads/cores
+ */
+ apic_write(APIC_LVTTHMR, lvtthmr_init);
+
+ h = lvtthmr_init;
+
if ((l & MSR_IA32_MISC_ENABLE_TM1) && (h & APIC_DM_SMI)) {
printk(KERN_DEBUG
"CPU%d: Thermal monitoring handled by SMI\n", cpu);
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index b5801c311846304f2fc2263732e93a6a83c07217..c1bbed1021d96c63e96593f1687d50bc7716b22e 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -77,6 +77,18 @@ struct cpu_hw_events {
struct debug_store *ds;
};
+struct event_constraint {
+ unsigned long idxmsk[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
+ int code;
+};
+
+#define EVENT_CONSTRAINT(c, m) { .code = (c), .idxmsk[0] = (m) }
+#define EVENT_CONSTRAINT_END { .code = 0, .idxmsk[0] = 0 }
+
+#define for_each_event_constraint(e, c) \
+ for ((e) = (c); (e)->idxmsk[0]; (e)++)
+
+
/*
* struct x86_pmu - generic x86 pmu
*/
@@ -102,6 +114,8 @@ struct x86_pmu {
u64 intel_ctrl;
void (*enable_bts)(u64 config);
void (*disable_bts)(void);
+ int (*get_event_idx)(struct cpu_hw_events *cpuc,
+ struct hw_perf_event *hwc);
};
static struct x86_pmu x86_pmu __read_mostly;
@@ -110,6 +124,8 @@ static DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = {
.enabled = 1,
};
+static const struct event_constraint *event_constraints;
+
/*
* Not sure about some of these
*/
@@ -155,6 +171,16 @@ static u64 p6_pmu_raw_event(u64 hw_event)
return hw_event & P6_EVNTSEL_MASK;
}
+static const struct event_constraint intel_p6_event_constraints[] =
+{
+ EVENT_CONSTRAINT(0xc1, 0x1), /* FLOPS */
+ EVENT_CONSTRAINT(0x10, 0x1), /* FP_COMP_OPS_EXE */
+ EVENT_CONSTRAINT(0x11, 0x1), /* FP_ASSIST */
+ EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
+ EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
+ EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
+ EVENT_CONSTRAINT_END
+};
/*
* Intel PerfMon v3. Used on Core2 and later.
@@ -170,6 +196,35 @@ static const u64 intel_perfmon_event_map[] =
[PERF_COUNT_HW_BUS_CYCLES] = 0x013c,
};
+static const struct event_constraint intel_core_event_constraints[] =
+{
+ EVENT_CONSTRAINT(0x10, 0x1), /* FP_COMP_OPS_EXE */
+ EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */
+ EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
+ EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
+ EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
+ EVENT_CONSTRAINT(0x18, 0x1), /* IDLE_DURING_DIV */
+ EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */
+ EVENT_CONSTRAINT(0xa1, 0x1), /* RS_UOPS_DISPATCH_CYCLES */
+ EVENT_CONSTRAINT(0xcb, 0x1), /* MEM_LOAD_RETIRED */
+ EVENT_CONSTRAINT_END
+};
+
+static const struct event_constraint intel_nehalem_event_constraints[] =
+{
+ EVENT_CONSTRAINT(0x40, 0x3), /* L1D_CACHE_LD */
+ EVENT_CONSTRAINT(0x41, 0x3), /* L1D_CACHE_ST */
+ EVENT_CONSTRAINT(0x42, 0x3), /* L1D_CACHE_LOCK */
+ EVENT_CONSTRAINT(0x43, 0x3), /* L1D_ALL_REF */
+ EVENT_CONSTRAINT(0x4e, 0x3), /* L1D_PREFETCH */
+ EVENT_CONSTRAINT(0x4c, 0x3), /* LOAD_HIT_PRE */
+ EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
+ EVENT_CONSTRAINT(0x52, 0x3), /* L1D_CACHE_PREFETCH_LOCK_FB_HIT */
+ EVENT_CONSTRAINT(0x53, 0x3), /* L1D_CACHE_LOCK_FB_HIT */
+ EVENT_CONSTRAINT(0xc5, 0x3), /* CACHE_LOCK_CYCLES */
+ EVENT_CONSTRAINT_END
+};
+
static u64 intel_pmu_event_map(int hw_event)
{
return intel_perfmon_event_map[hw_event];
@@ -190,7 +245,7 @@ static u64 __read_mostly hw_cache_event_ids
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX];
-static const u64 nehalem_hw_cache_event_ids
+static __initconst u64 nehalem_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
@@ -281,7 +336,7 @@ static const u64 nehalem_hw_cache_event_ids
},
};
-static const u64 core2_hw_cache_event_ids
+static __initconst u64 core2_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
@@ -372,7 +427,7 @@ static const u64 core2_hw_cache_event_ids
},
};
-static const u64 atom_hw_cache_event_ids
+static __initconst u64 atom_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
@@ -469,7 +524,7 @@ static u64 intel_pmu_raw_event(u64 hw_event)
#define CORE_EVNTSEL_UNIT_MASK 0x0000FF00ULL
#define CORE_EVNTSEL_EDGE_MASK 0x00040000ULL
#define CORE_EVNTSEL_INV_MASK 0x00800000ULL
-#define CORE_EVNTSEL_REG_MASK 0xFF000000ULL
+#define CORE_EVNTSEL_REG_MASK 0xFF000000ULL
#define CORE_EVNTSEL_MASK \
(CORE_EVNTSEL_EVENT_MASK | \
@@ -481,7 +536,7 @@ static u64 intel_pmu_raw_event(u64 hw_event)
return hw_event & CORE_EVNTSEL_MASK;
}
-static const u64 amd_hw_cache_event_ids
+static __initconst u64 amd_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
@@ -932,6 +987,8 @@ static int __hw_perf_event_init(struct perf_event *event)
*/
hwc->config = ARCH_PERFMON_EVENTSEL_INT;
+ hwc->idx = -1;
+
/*
* Count user and OS events unless requested not to.
*/
@@ -1334,8 +1391,7 @@ static void amd_pmu_enable_event(struct hw_perf_event *hwc, int idx)
x86_pmu_enable_event(hwc, idx);
}
-static int
-fixed_mode_idx(struct perf_event *event, struct hw_perf_event *hwc)
+static int fixed_mode_idx(struct hw_perf_event *hwc)
{
unsigned int hw_event;
@@ -1349,6 +1405,12 @@ fixed_mode_idx(struct perf_event *event, struct hw_perf_event *hwc)
if (!x86_pmu.num_events_fixed)
return -1;
+ /*
+ * fixed counters do not take all possible filters
+ */
+ if (hwc->config & ARCH_PERFMON_EVENT_FILTER_MASK)
+ return -1;
+
if (unlikely(hw_event == x86_pmu.event_map(PERF_COUNT_HW_INSTRUCTIONS)))
return X86_PMC_IDX_FIXED_INSTRUCTIONS;
if (unlikely(hw_event == x86_pmu.event_map(PERF_COUNT_HW_CPU_CYCLES)))
@@ -1360,22 +1422,57 @@ fixed_mode_idx(struct perf_event *event, struct hw_perf_event *hwc)
}
/*
- * Find a PMC slot for the freshly enabled / scheduled in event:
+ * generic counter allocator: get next free counter
*/
-static int x86_pmu_enable(struct perf_event *event)
+static int
+gen_get_event_idx(struct cpu_hw_events *cpuc, struct hw_perf_event *hwc)
+{
+ int idx;
+
+ idx = find_first_zero_bit(cpuc->used_mask, x86_pmu.num_events);
+ return idx == x86_pmu.num_events ? -1 : idx;
+}
+
+/*
+ * intel-specific counter allocator: check event constraints
+ */
+static int
+intel_get_event_idx(struct cpu_hw_events *cpuc, struct hw_perf_event *hwc)
+{
+ const struct event_constraint *event_constraint;
+ int i, code;
+
+ if (!event_constraints)
+ goto skip;
+
+ code = hwc->config & CORE_EVNTSEL_EVENT_MASK;
+
+ for_each_event_constraint(event_constraint, event_constraints) {
+ if (code == event_constraint->code) {
+ for_each_bit(i, event_constraint->idxmsk, X86_PMC_IDX_MAX) {
+ if (!test_and_set_bit(i, cpuc->used_mask))
+ return i;
+ }
+ return -1;
+ }
+ }
+skip:
+ return gen_get_event_idx(cpuc, hwc);
+}
+
+static int
+x86_schedule_event(struct cpu_hw_events *cpuc, struct hw_perf_event *hwc)
{
- struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
- struct hw_perf_event *hwc = &event->hw;
int idx;
- idx = fixed_mode_idx(event, hwc);
+ idx = fixed_mode_idx(hwc);
if (idx == X86_PMC_IDX_FIXED_BTS) {
/* BTS is already occupied. */
if (test_and_set_bit(idx, cpuc->used_mask))
return -EAGAIN;
hwc->config_base = 0;
- hwc->event_base = 0;
+ hwc->event_base = 0;
hwc->idx = idx;
} else if (idx >= 0) {
/*
@@ -1396,20 +1493,35 @@ static int x86_pmu_enable(struct perf_event *event)
} else {
idx = hwc->idx;
/* Try to get the previous generic event again */
- if (test_and_set_bit(idx, cpuc->used_mask)) {
+ if (idx == -1 || test_and_set_bit(idx, cpuc->used_mask)) {
try_generic:
- idx = find_first_zero_bit(cpuc->used_mask,
- x86_pmu.num_events);
- if (idx == x86_pmu.num_events)
+ idx = x86_pmu.get_event_idx(cpuc, hwc);
+ if (idx == -1)
return -EAGAIN;
set_bit(idx, cpuc->used_mask);
hwc->idx = idx;
}
- hwc->config_base = x86_pmu.eventsel;
- hwc->event_base = x86_pmu.perfctr;
+ hwc->config_base = x86_pmu.eventsel;
+ hwc->event_base = x86_pmu.perfctr;
}
+ return idx;
+}
+
+/*
+ * Find a PMC slot for the freshly enabled / scheduled in event:
+ */
+static int x86_pmu_enable(struct perf_event *event)
+{
+ struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+ struct hw_perf_event *hwc = &event->hw;
+ int idx;
+
+ idx = x86_schedule_event(cpuc, hwc);
+ if (idx < 0)
+ return idx;
+
perf_events_lapic_init();
x86_pmu.disable(hwc, idx);
@@ -1852,7 +1964,7 @@ static __read_mostly struct notifier_block perf_event_nmi_notifier = {
.priority = 1
};
-static struct x86_pmu p6_pmu = {
+static __initconst struct x86_pmu p6_pmu = {
.name = "p6",
.handle_irq = p6_pmu_handle_irq,
.disable_all = p6_pmu_disable_all,
@@ -1877,9 +1989,10 @@ static struct x86_pmu p6_pmu = {
*/
.event_bits = 32,
.event_mask = (1ULL << 32) - 1,
+ .get_event_idx = intel_get_event_idx,
};
-static struct x86_pmu intel_pmu = {
+static __initconst struct x86_pmu intel_pmu = {
.name = "Intel",
.handle_irq = intel_pmu_handle_irq,
.disable_all = intel_pmu_disable_all,
@@ -1900,9 +2013,10 @@ static struct x86_pmu intel_pmu = {
.max_period = (1ULL << 31) - 1,
.enable_bts = intel_pmu_enable_bts,
.disable_bts = intel_pmu_disable_bts,
+ .get_event_idx = intel_get_event_idx,
};
-static struct x86_pmu amd_pmu = {
+static __initconst struct x86_pmu amd_pmu = {
.name = "AMD",
.handle_irq = amd_pmu_handle_irq,
.disable_all = amd_pmu_disable_all,
@@ -1920,9 +2034,10 @@ static struct x86_pmu amd_pmu = {
.apic = 1,
/* use highest bit to detect overflow */
.max_period = (1ULL << 47) - 1,
+ .get_event_idx = gen_get_event_idx,
};
-static int p6_pmu_init(void)
+static __init int p6_pmu_init(void)
{
switch (boot_cpu_data.x86_model) {
case 1:
@@ -1932,10 +2047,12 @@ static int p6_pmu_init(void)
case 7:
case 8:
case 11: /* Pentium III */
+ event_constraints = intel_p6_event_constraints;
break;
case 9:
case 13:
/* Pentium M */
+ event_constraints = intel_p6_event_constraints;
break;
default:
pr_cont("unsupported p6 CPU model %d ",
@@ -1954,7 +2071,7 @@ static int p6_pmu_init(void)
return 0;
}
-static int intel_pmu_init(void)
+static __init int intel_pmu_init(void)
{
union cpuid10_edx edx;
union cpuid10_eax eax;
@@ -2007,12 +2124,14 @@ static int intel_pmu_init(void)
sizeof(hw_cache_event_ids));
pr_cont("Core2 events, ");
+ event_constraints = intel_core_event_constraints;
break;
default:
case 26:
memcpy(hw_cache_event_ids, nehalem_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
+ event_constraints = intel_nehalem_event_constraints;
pr_cont("Nehalem/Corei7 events, ");
break;
case 28:
@@ -2025,7 +2144,7 @@ static int intel_pmu_init(void)
return 0;
}
-static int amd_pmu_init(void)
+static __init int amd_pmu_init(void)
{
/* Performance-monitoring supported from K7 and later: */
if (boot_cpu_data.x86 < 6)
@@ -2105,11 +2224,47 @@ static const struct pmu pmu = {
.unthrottle = x86_pmu_unthrottle,
};
+static int
+validate_event(struct cpu_hw_events *cpuc, struct perf_event *event)
+{
+ struct hw_perf_event fake_event = event->hw;
+
+ if (event->pmu && event->pmu != &pmu)
+ return 0;
+
+ return x86_schedule_event(cpuc, &fake_event) >= 0;
+}
+
+static int validate_group(struct perf_event *event)
+{
+ struct perf_event *sibling, *leader = event->group_leader;
+ struct cpu_hw_events fake_pmu;
+
+ memset(&fake_pmu, 0, sizeof(fake_pmu));
+
+ if (!validate_event(&fake_pmu, leader))
+ return -ENOSPC;
+
+ list_for_each_entry(sibling, &leader->sibling_list, group_entry) {
+ if (!validate_event(&fake_pmu, sibling))
+ return -ENOSPC;
+ }
+
+ if (!validate_event(&fake_pmu, event))
+ return -ENOSPC;
+
+ return 0;
+}
+
const struct pmu *hw_perf_event_init(struct perf_event *event)
{
int err;
err = __hw_perf_event_init(event);
+ if (!err) {
+ if (event->group_leader != event)
+ err = validate_group(event);
+ }
if (err) {
if (event->destroy)
event->destroy(event);
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index 7d52e9da5e0cc0d1942b6cd9624f83f504491e77..50b9c220e1213ceacf48e10f4f302a98b65ced4f 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -333,6 +333,10 @@ ENTRY(ret_from_fork)
CFI_ENDPROC
END(ret_from_fork)
+/*
+ * Interrupt exit functions should be protected against kprobes
+ */
+ .pushsection .kprobes.text, "ax"
/*
* Return to user mode is not as complex as all this looks,
* but we want the default path for a system call return to
@@ -383,6 +387,10 @@ need_resched:
END(resume_kernel)
#endif
CFI_ENDPROC
+/*
+ * End of kprobes section
+ */
+ .popsection
/* SYSENTER_RETURN points to after the "sysenter" instruction in
the vsyscall page. See vsyscall-sysentry.S, which defines the symbol. */
@@ -513,6 +521,10 @@ sysexit_audit:
PTGS_TO_GS_EX
ENDPROC(ia32_sysenter_target)
+/*
+ * syscall stub including irq exit should be protected against kprobes
+ */
+ .pushsection .kprobes.text, "ax"
# system call handler stub
ENTRY(system_call)
RING0_INT_FRAME # can't unwind into user space anyway
@@ -705,6 +717,10 @@ syscall_badsys:
jmp resume_userspace
END(syscall_badsys)
CFI_ENDPROC
+/*
+ * End of kprobes section
+ */
+ .popsection
/*
* System calls that need a pt_regs pointer.
@@ -814,6 +830,10 @@ common_interrupt:
ENDPROC(common_interrupt)
CFI_ENDPROC
+/*
+ * Irq entries should be protected against kprobes
+ */
+ .pushsection .kprobes.text, "ax"
#define BUILD_INTERRUPT3(name, nr, fn) \
ENTRY(name) \
RING0_INT_FRAME; \
@@ -980,6 +1000,10 @@ ENTRY(spurious_interrupt_bug)
jmp error_code
CFI_ENDPROC
END(spurious_interrupt_bug)
+/*
+ * End of kprobes section
+ */
+ .popsection
ENTRY(kernel_thread_helper)
pushl $0 # fake return address for unwinder
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index bd5bbddddf91eab956106bff572e03a0ba86b9f9..722df1b1152d57721568ef583e4f2c002922979b 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -803,6 +803,10 @@ END(interrupt)
call \func
.endm
+/*
+ * Interrupt entry/exit should be protected against kprobes
+ */
+ .pushsection .kprobes.text, "ax"
/*
* The interrupt stubs push (~vector+0x80) onto the stack and
* then jump to common_interrupt.
@@ -941,6 +945,10 @@ ENTRY(retint_kernel)
CFI_ENDPROC
END(common_interrupt)
+/*
+ * End of kprobes section
+ */
+ .popsection
/*
* APIC interrupts.
diff --git a/arch/x86/kernel/hw_breakpoint.c b/arch/x86/kernel/hw_breakpoint.c
new file mode 100644
index 0000000000000000000000000000000000000000..d42f65ac492766ecaeb60944b4ae573f5bf6f0bf
--- /dev/null
+++ b/arch/x86/kernel/hw_breakpoint.c
@@ -0,0 +1,555 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) 2007 Alan Stern
+ * Copyright (C) 2009 IBM Corporation
+ * Copyright (C) 2009 Frederic Weisbecker
+ *
+ * Authors: Alan Stern
+ * K.Prasad
+ * Frederic Weisbecker
+ */
+
+/*
+ * HW_breakpoint: a unified kernel/user-space hardware breakpoint facility,
+ * using the CPU's debug registers.
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include
+#include
+#include
+
+/* Per cpu debug control register value */
+DEFINE_PER_CPU(unsigned long, cpu_dr7);
+EXPORT_PER_CPU_SYMBOL(cpu_dr7);
+
+/* Per cpu debug address registers values */
+static DEFINE_PER_CPU(unsigned long, cpu_debugreg[HBP_NUM]);
+
+/*
+ * Stores the breakpoints currently in use on each breakpoint address
+ * register for each cpus
+ */
+static DEFINE_PER_CPU(struct perf_event *, bp_per_reg[HBP_NUM]);
+
+
+static inline unsigned long
+__encode_dr7(int drnum, unsigned int len, unsigned int type)
+{
+ unsigned long bp_info;
+
+ bp_info = (len | type) & 0xf;
+ bp_info <<= (DR_CONTROL_SHIFT + drnum * DR_CONTROL_SIZE);
+ bp_info |= (DR_GLOBAL_ENABLE << (drnum * DR_ENABLE_SIZE));
+
+ return bp_info;
+}
+
+/*
+ * Encode the length, type, Exact, and Enable bits for a particular breakpoint
+ * as stored in debug register 7.
+ */
+unsigned long encode_dr7(int drnum, unsigned int len, unsigned int type)
+{
+ return __encode_dr7(drnum, len, type) | DR_GLOBAL_SLOWDOWN;
+}
+
+/*
+ * Decode the length and type bits for a particular breakpoint as
+ * stored in debug register 7. Return the "enabled" status.
+ */
+int decode_dr7(unsigned long dr7, int bpnum, unsigned *len, unsigned *type)
+{
+ int bp_info = dr7 >> (DR_CONTROL_SHIFT + bpnum * DR_CONTROL_SIZE);
+
+ *len = (bp_info & 0xc) | 0x40;
+ *type = (bp_info & 0x3) | 0x80;
+
+ return (dr7 >> (bpnum * DR_ENABLE_SIZE)) & 0x3;
+}
+
+/*
+ * Install a perf counter breakpoint.
+ *
+ * We seek a free debug address register and use it for this
+ * breakpoint. Eventually we enable it in the debug control register.
+ *
+ * Atomic: we hold the counter->ctx->lock and we only handle variables
+ * and registers local to this cpu.
+ */
+int arch_install_hw_breakpoint(struct perf_event *bp)
+{
+ struct arch_hw_breakpoint *info = counter_arch_bp(bp);
+ unsigned long *dr7;
+ int i;
+
+ for (i = 0; i < HBP_NUM; i++) {
+ struct perf_event **slot = &__get_cpu_var(bp_per_reg[i]);
+
+ if (!*slot) {
+ *slot = bp;
+ break;
+ }
+ }
+
+ if (WARN_ONCE(i == HBP_NUM, "Can't find any breakpoint slot"))
+ return -EBUSY;
+
+ set_debugreg(info->address, i);
+ __get_cpu_var(cpu_debugreg[i]) = info->address;
+
+ dr7 = &__get_cpu_var(cpu_dr7);
+ *dr7 |= encode_dr7(i, info->len, info->type);
+
+ set_debugreg(*dr7, 7);
+
+ return 0;
+}
+
+/*
+ * Uninstall the breakpoint contained in the given counter.
+ *
+ * First we search the debug address register it uses and then we disable
+ * it.
+ *
+ * Atomic: we hold the counter->ctx->lock and we only handle variables
+ * and registers local to this cpu.
+ */
+void arch_uninstall_hw_breakpoint(struct perf_event *bp)
+{
+ struct arch_hw_breakpoint *info = counter_arch_bp(bp);
+ unsigned long *dr7;
+ int i;
+
+ for (i = 0; i < HBP_NUM; i++) {
+ struct perf_event **slot = &__get_cpu_var(bp_per_reg[i]);
+
+ if (*slot == bp) {
+ *slot = NULL;
+ break;
+ }
+ }
+
+ if (WARN_ONCE(i == HBP_NUM, "Can't find any breakpoint slot"))
+ return;
+
+ dr7 = &__get_cpu_var(cpu_dr7);
+ *dr7 &= ~__encode_dr7(i, info->len, info->type);
+
+ set_debugreg(*dr7, 7);
+}
+
+static int get_hbp_len(u8 hbp_len)
+{
+ unsigned int len_in_bytes = 0;
+
+ switch (hbp_len) {
+ case X86_BREAKPOINT_LEN_1:
+ len_in_bytes = 1;
+ break;
+ case X86_BREAKPOINT_LEN_2:
+ len_in_bytes = 2;
+ break;
+ case X86_BREAKPOINT_LEN_4:
+ len_in_bytes = 4;
+ break;
+#ifdef CONFIG_X86_64
+ case X86_BREAKPOINT_LEN_8:
+ len_in_bytes = 8;
+ break;
+#endif
+ }
+ return len_in_bytes;
+}
+
+/*
+ * Check for virtual address in user space.
+ */
+int arch_check_va_in_userspace(unsigned long va, u8 hbp_len)
+{
+ unsigned int len;
+
+ len = get_hbp_len(hbp_len);
+
+ return (va <= TASK_SIZE - len);
+}
+
+/*
+ * Check for virtual address in kernel space.
+ */
+static int arch_check_va_in_kernelspace(unsigned long va, u8 hbp_len)
+{
+ unsigned int len;
+
+ len = get_hbp_len(hbp_len);
+
+ return (va >= TASK_SIZE) && ((va + len - 1) >= TASK_SIZE);
+}
+
+/*
+ * Store a breakpoint's encoded address, length, and type.
+ */
+static int arch_store_info(struct perf_event *bp)
+{
+ struct arch_hw_breakpoint *info = counter_arch_bp(bp);
+ /*
+ * For kernel-addresses, either the address or symbol name can be
+ * specified.
+ */
+ if (info->name)
+ info->address = (unsigned long)
+ kallsyms_lookup_name(info->name);
+ if (info->address)
+ return 0;
+
+ return -EINVAL;
+}
+
+int arch_bp_generic_fields(int x86_len, int x86_type,
+ int *gen_len, int *gen_type)
+{
+ /* Len */
+ switch (x86_len) {
+ case X86_BREAKPOINT_LEN_1:
+ *gen_len = HW_BREAKPOINT_LEN_1;
+ break;
+ case X86_BREAKPOINT_LEN_2:
+ *gen_len = HW_BREAKPOINT_LEN_2;
+ break;
+ case X86_BREAKPOINT_LEN_4:
+ *gen_len = HW_BREAKPOINT_LEN_4;
+ break;
+#ifdef CONFIG_X86_64
+ case X86_BREAKPOINT_LEN_8:
+ *gen_len = HW_BREAKPOINT_LEN_8;
+ break;
+#endif
+ default:
+ return -EINVAL;
+ }
+
+ /* Type */
+ switch (x86_type) {
+ case X86_BREAKPOINT_EXECUTE:
+ *gen_type = HW_BREAKPOINT_X;
+ break;
+ case X86_BREAKPOINT_WRITE:
+ *gen_type = HW_BREAKPOINT_W;
+ break;
+ case X86_BREAKPOINT_RW:
+ *gen_type = HW_BREAKPOINT_W | HW_BREAKPOINT_R;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+
+static int arch_build_bp_info(struct perf_event *bp)
+{
+ struct arch_hw_breakpoint *info = counter_arch_bp(bp);
+
+ info->address = bp->attr.bp_addr;
+
+ /* Len */
+ switch (bp->attr.bp_len) {
+ case HW_BREAKPOINT_LEN_1:
+ info->len = X86_BREAKPOINT_LEN_1;
+ break;
+ case HW_BREAKPOINT_LEN_2:
+ info->len = X86_BREAKPOINT_LEN_2;
+ break;
+ case HW_BREAKPOINT_LEN_4:
+ info->len = X86_BREAKPOINT_LEN_4;
+ break;
+#ifdef CONFIG_X86_64
+ case HW_BREAKPOINT_LEN_8:
+ info->len = X86_BREAKPOINT_LEN_8;
+ break;
+#endif
+ default:
+ return -EINVAL;
+ }
+
+ /* Type */
+ switch (bp->attr.bp_type) {
+ case HW_BREAKPOINT_W:
+ info->type = X86_BREAKPOINT_WRITE;
+ break;
+ case HW_BREAKPOINT_W | HW_BREAKPOINT_R:
+ info->type = X86_BREAKPOINT_RW;
+ break;
+ case HW_BREAKPOINT_X:
+ info->type = X86_BREAKPOINT_EXECUTE;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+/*
+ * Validate the arch-specific HW Breakpoint register settings
+ */
+int arch_validate_hwbkpt_settings(struct perf_event *bp,
+ struct task_struct *tsk)
+{
+ struct arch_hw_breakpoint *info = counter_arch_bp(bp);
+ unsigned int align;
+ int ret;
+
+
+ ret = arch_build_bp_info(bp);
+ if (ret)
+ return ret;
+
+ ret = -EINVAL;
+
+ if (info->type == X86_BREAKPOINT_EXECUTE)
+ /*
+ * Ptrace-refactoring code
+ * For now, we'll allow instruction breakpoint only for user-space
+ * addresses
+ */
+ if ((!arch_check_va_in_userspace(info->address, info->len)) &&
+ info->len != X86_BREAKPOINT_EXECUTE)
+ return ret;
+
+ switch (info->len) {
+ case X86_BREAKPOINT_LEN_1:
+ align = 0;
+ break;
+ case X86_BREAKPOINT_LEN_2:
+ align = 1;
+ break;
+ case X86_BREAKPOINT_LEN_4:
+ align = 3;
+ break;
+#ifdef CONFIG_X86_64
+ case X86_BREAKPOINT_LEN_8:
+ align = 7;
+ break;
+#endif
+ default:
+ return ret;
+ }
+
+ if (bp->callback)
+ ret = arch_store_info(bp);
+
+ if (ret < 0)
+ return ret;
+ /*
+ * Check that the low-order bits of the address are appropriate
+ * for the alignment implied by len.
+ */
+ if (info->address & align)
+ return -EINVAL;
+
+ /* Check that the virtual address is in the proper range */
+ if (tsk) {
+ if (!arch_check_va_in_userspace(info->address, info->len))
+ return -EFAULT;
+ } else {
+ if (!arch_check_va_in_kernelspace(info->address, info->len))
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+/*
+ * Dump the debug register contents to the user.
+ * We can't dump our per cpu values because it
+ * may contain cpu wide breakpoint, something that
+ * doesn't belong to the current task.
+ *
+ * TODO: include non-ptrace user breakpoints (perf)
+ */
+void aout_dump_debugregs(struct user *dump)
+{
+ int i;
+ int dr7 = 0;
+ struct perf_event *bp;
+ struct arch_hw_breakpoint *info;
+ struct thread_struct *thread = ¤t->thread;
+
+ for (i = 0; i < HBP_NUM; i++) {
+ bp = thread->ptrace_bps[i];
+
+ if (bp && !bp->attr.disabled) {
+ dump->u_debugreg[i] = bp->attr.bp_addr;
+ info = counter_arch_bp(bp);
+ dr7 |= encode_dr7(i, info->len, info->type);
+ } else {
+ dump->u_debugreg[i] = 0;
+ }
+ }
+
+ dump->u_debugreg[4] = 0;
+ dump->u_debugreg[5] = 0;
+ dump->u_debugreg[6] = current->thread.debugreg6;
+
+ dump->u_debugreg[7] = dr7;
+}
+EXPORT_SYMBOL_GPL(aout_dump_debugregs);
+
+/*
+ * Release the user breakpoints used by ptrace
+ */
+void flush_ptrace_hw_breakpoint(struct task_struct *tsk)
+{
+ int i;
+ struct thread_struct *t = &tsk->thread;
+
+ for (i = 0; i < HBP_NUM; i++) {
+ unregister_hw_breakpoint(t->ptrace_bps[i]);
+ t->ptrace_bps[i] = NULL;
+ }
+}
+
+void hw_breakpoint_restore(void)
+{
+ set_debugreg(__get_cpu_var(cpu_debugreg[0]), 0);
+ set_debugreg(__get_cpu_var(cpu_debugreg[1]), 1);
+ set_debugreg(__get_cpu_var(cpu_debugreg[2]), 2);
+ set_debugreg(__get_cpu_var(cpu_debugreg[3]), 3);
+ set_debugreg(current->thread.debugreg6, 6);
+ set_debugreg(__get_cpu_var(cpu_dr7), 7);
+}
+EXPORT_SYMBOL_GPL(hw_breakpoint_restore);
+
+/*
+ * Handle debug exception notifications.
+ *
+ * Return value is either NOTIFY_STOP or NOTIFY_DONE as explained below.
+ *
+ * NOTIFY_DONE returned if one of the following conditions is true.
+ * i) When the causative address is from user-space and the exception
+ * is a valid one, i.e. not triggered as a result of lazy debug register
+ * switching
+ * ii) When there are more bits than trap set in DR6 register (such
+ * as BD, BS or BT) indicating that more than one debug condition is
+ * met and requires some more action in do_debug().
+ *
+ * NOTIFY_STOP returned for all other cases
+ *
+ */
+static int __kprobes hw_breakpoint_handler(struct die_args *args)
+{
+ int i, cpu, rc = NOTIFY_STOP;
+ struct perf_event *bp;
+ unsigned long dr7, dr6;
+ unsigned long *dr6_p;
+
+ /* The DR6 value is pointed by args->err */
+ dr6_p = (unsigned long *)ERR_PTR(args->err);
+ dr6 = *dr6_p;
+
+ /* Do an early return if no trap bits are set in DR6 */
+ if ((dr6 & DR_TRAP_BITS) == 0)
+ return NOTIFY_DONE;
+
+ get_debugreg(dr7, 7);
+ /* Disable breakpoints during exception handling */
+ set_debugreg(0UL, 7);
+ /*
+ * Assert that local interrupts are disabled
+ * Reset the DRn bits in the virtualized register value.
+ * The ptrace trigger routine will add in whatever is needed.
+ */
+ current->thread.debugreg6 &= ~DR_TRAP_BITS;
+ cpu = get_cpu();
+
+ /* Handle all the breakpoints that were triggered */
+ for (i = 0; i < HBP_NUM; ++i) {
+ if (likely(!(dr6 & (DR_TRAP0 << i))))
+ continue;
+
+ /*
+ * The counter may be concurrently released but that can only
+ * occur from a call_rcu() path. We can then safely fetch
+ * the breakpoint, use its callback, touch its counter
+ * while we are in an rcu_read_lock() path.
+ */
+ rcu_read_lock();
+
+ bp = per_cpu(bp_per_reg[i], cpu);
+ if (bp)
+ rc = NOTIFY_DONE;
+ /*
+ * Reset the 'i'th TRAP bit in dr6 to denote completion of
+ * exception handling
+ */
+ (*dr6_p) &= ~(DR_TRAP0 << i);
+ /*
+ * bp can be NULL due to lazy debug register switching
+ * or due to concurrent perf counter removing.
+ */
+ if (!bp) {
+ rcu_read_unlock();
+ break;
+ }
+
+ (bp->callback)(bp, args->regs);
+
+ rcu_read_unlock();
+ }
+ if (dr6 & (~DR_TRAP_BITS))
+ rc = NOTIFY_DONE;
+
+ set_debugreg(dr7, 7);
+ put_cpu();
+
+ return rc;
+}
+
+/*
+ * Handle debug exception notifications.
+ */
+int __kprobes hw_breakpoint_exceptions_notify(
+ struct notifier_block *unused, unsigned long val, void *data)
+{
+ if (val != DIE_DEBUG)
+ return NOTIFY_DONE;
+
+ return hw_breakpoint_handler(data);
+}
+
+void hw_breakpoint_pmu_read(struct perf_event *bp)
+{
+ /* TODO */
+}
+
+void hw_breakpoint_pmu_unthrottle(struct perf_event *bp)
+{
+ /* TODO */
+}
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 04bbd52785688c4152c449459d943a0482c68830..19212cb01558101c5fd861fc838e83230e94e15c 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -92,17 +92,17 @@ static int show_other_interrupts(struct seq_file *p, int prec)
seq_printf(p, "%10u ", irq_stats(j)->irq_tlb_count);
seq_printf(p, " TLB shootdowns\n");
#endif
-#ifdef CONFIG_X86_MCE
+#ifdef CONFIG_X86_THERMAL_VECTOR
seq_printf(p, "%*s: ", prec, "TRM");
for_each_online_cpu(j)
seq_printf(p, "%10u ", irq_stats(j)->irq_thermal_count);
seq_printf(p, " Thermal event interrupts\n");
-# ifdef CONFIG_X86_MCE_THRESHOLD
+#endif
+#ifdef CONFIG_X86_MCE_THRESHOLD
seq_printf(p, "%*s: ", prec, "THR");
for_each_online_cpu(j)
seq_printf(p, "%10u ", irq_stats(j)->irq_threshold_count);
seq_printf(p, " Threshold APIC interrupts\n");
-# endif
#endif
#ifdef CONFIG_X86_MCE
seq_printf(p, "%*s: ", prec, "MCE");
@@ -194,11 +194,11 @@ u64 arch_irq_stat_cpu(unsigned int cpu)
sum += irq_stats(cpu)->irq_call_count;
sum += irq_stats(cpu)->irq_tlb_count;
#endif
-#ifdef CONFIG_X86_MCE
+#ifdef CONFIG_X86_THERMAL_VECTOR
sum += irq_stats(cpu)->irq_thermal_count;
-# ifdef CONFIG_X86_MCE_THRESHOLD
+#endif
+#ifdef CONFIG_X86_MCE_THRESHOLD
sum += irq_stats(cpu)->irq_threshold_count;
-# endif
#endif
#ifdef CONFIG_X86_MCE
sum += per_cpu(mce_exception_count, cpu);
diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index 8d82a77a3f3b96ea3c0dc37e91551dddc7e10b51..34e86b67550c523d3bbefb0275ede78d526b0826 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -43,6 +43,7 @@
#include
#include
+#include
#include
#include
@@ -434,6 +435,11 @@ single_step_cont(struct pt_regs *regs, struct die_args *args)
"resuming...\n");
kgdb_arch_handle_exception(args->trapnr, args->signr,
args->err, "c", "", regs);
+ /*
+ * Reset the BS bit in dr6 (pointed by args->err) to
+ * denote completion of processing
+ */
+ (*(unsigned long *)ERR_PTR(args->err)) &= ~DR_STEP;
return NOTIFY_STOP;
}
diff --git a/arch/x86/kernel/kprobes.c b/arch/x86/kernel/kprobes.c
index 7b5169d2b00026272ed26874913c42ff315befb3..3fe86d706a1493ad59cb655478bd9b41cfd11f4d 100644
--- a/arch/x86/kernel/kprobes.c
+++ b/arch/x86/kernel/kprobes.c
@@ -48,12 +48,15 @@
#include
#include
#include
+#include
#include
#include
#include
#include
#include
+#include
+#include
void jprobe_return_end(void);
@@ -106,50 +109,6 @@ static const u32 twobyte_is_boostable[256 / 32] = {
/* ----------------------------------------------- */
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
};
-static const u32 onebyte_has_modrm[256 / 32] = {
- /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
- /* ----------------------------------------------- */
- W(0x00, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0) | /* 00 */
- W(0x10, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0) , /* 10 */
- W(0x20, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0) | /* 20 */
- W(0x30, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0) , /* 30 */
- W(0x40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) | /* 40 */
- W(0x50, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) , /* 50 */
- W(0x60, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0) | /* 60 */
- W(0x70, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) , /* 70 */
- W(0x80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1) | /* 80 */
- W(0x90, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) , /* 90 */
- W(0xa0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) | /* a0 */
- W(0xb0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) , /* b0 */
- W(0xc0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0) | /* c0 */
- W(0xd0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1) , /* d0 */
- W(0xe0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) | /* e0 */
- W(0xf0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1) /* f0 */
- /* ----------------------------------------------- */
- /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
-};
-static const u32 twobyte_has_modrm[256 / 32] = {
- /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
- /* ----------------------------------------------- */
- W(0x00, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1) | /* 0f */
- W(0x10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0) , /* 1f */
- W(0x20, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1) | /* 2f */
- W(0x30, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) , /* 3f */
- W(0x40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1) | /* 4f */
- W(0x50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1) , /* 5f */
- W(0x60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1) | /* 6f */
- W(0x70, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1) , /* 7f */
- W(0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) | /* 8f */
- W(0x90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1) , /* 9f */
- W(0xa0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1) | /* af */
- W(0xb0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1) , /* bf */
- W(0xc0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0) | /* cf */
- W(0xd0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1) , /* df */
- W(0xe0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1) | /* ef */
- W(0xf0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0) /* ff */
- /* ----------------------------------------------- */
- /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
-};
#undef W
struct kretprobe_blackpoint kretprobe_blacklist[] = {
@@ -244,6 +203,75 @@ static int __kprobes can_boost(kprobe_opcode_t *opcodes)
}
}
+/* Recover the probed instruction at addr for further analysis. */
+static int recover_probed_instruction(kprobe_opcode_t *buf, unsigned long addr)
+{
+ struct kprobe *kp;
+ kp = get_kprobe((void *)addr);
+ if (!kp)
+ return -EINVAL;
+
+ /*
+ * Basically, kp->ainsn.insn has an original instruction.
+ * However, RIP-relative instruction can not do single-stepping
+ * at different place, fix_riprel() tweaks the displacement of
+ * that instruction. In that case, we can't recover the instruction
+ * from the kp->ainsn.insn.
+ *
+ * On the other hand, kp->opcode has a copy of the first byte of
+ * the probed instruction, which is overwritten by int3. And
+ * the instruction at kp->addr is not modified by kprobes except
+ * for the first byte, we can recover the original instruction
+ * from it and kp->opcode.
+ */
+ memcpy(buf, kp->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t));
+ buf[0] = kp->opcode;
+ return 0;
+}
+
+/* Dummy buffers for kallsyms_lookup */
+static char __dummy_buf[KSYM_NAME_LEN];
+
+/* Check if paddr is at an instruction boundary */
+static int __kprobes can_probe(unsigned long paddr)
+{
+ int ret;
+ unsigned long addr, offset = 0;
+ struct insn insn;
+ kprobe_opcode_t buf[MAX_INSN_SIZE];
+
+ if (!kallsyms_lookup(paddr, NULL, &offset, NULL, __dummy_buf))
+ return 0;
+
+ /* Decode instructions */
+ addr = paddr - offset;
+ while (addr < paddr) {
+ kernel_insn_init(&insn, (void *)addr);
+ insn_get_opcode(&insn);
+
+ /*
+ * Check if the instruction has been modified by another
+ * kprobe, in which case we replace the breakpoint by the
+ * original instruction in our buffer.
+ */
+ if (insn.opcode.bytes[0] == BREAKPOINT_INSTRUCTION) {
+ ret = recover_probed_instruction(buf, addr);
+ if (ret)
+ /*
+ * Another debugging subsystem might insert
+ * this breakpoint. In that case, we can't
+ * recover it.
+ */
+ return 0;
+ kernel_insn_init(&insn, buf);
+ }
+ insn_get_length(&insn);
+ addr += insn.length;
+ }
+
+ return (addr == paddr);
+}
+
/*
* Returns non-zero if opcode modifies the interrupt flag.
*/
@@ -277,68 +305,30 @@ static int __kprobes is_IF_modifier(kprobe_opcode_t *insn)
static void __kprobes fix_riprel(struct kprobe *p)
{
#ifdef CONFIG_X86_64
- u8 *insn = p->ainsn.insn;
- s64 disp;
- int need_modrm;
-
- /* Skip legacy instruction prefixes. */
- while (1) {
- switch (*insn) {
- case 0x66:
- case 0x67:
- case 0x2e:
- case 0x3e:
- case 0x26:
- case 0x64:
- case 0x65:
- case 0x36:
- case 0xf0:
- case 0xf3:
- case 0xf2:
- ++insn;
- continue;
- }
- break;
- }
+ struct insn insn;
+ kernel_insn_init(&insn, p->ainsn.insn);
- /* Skip REX instruction prefix. */
- if (is_REX_prefix(insn))
- ++insn;
-
- if (*insn == 0x0f) {
- /* Two-byte opcode. */
- ++insn;
- need_modrm = test_bit(*insn,
- (unsigned long *)twobyte_has_modrm);
- } else
- /* One-byte opcode. */
- need_modrm = test_bit(*insn,
- (unsigned long *)onebyte_has_modrm);
-
- if (need_modrm) {
- u8 modrm = *++insn;
- if ((modrm & 0xc7) == 0x05) {
- /* %rip+disp32 addressing mode */
- /* Displacement follows ModRM byte. */
- ++insn;
- /*
- * The copied instruction uses the %rip-relative
- * addressing mode. Adjust the displacement for the
- * difference between the original location of this
- * instruction and the location of the copy that will
- * actually be run. The tricky bit here is making sure
- * that the sign extension happens correctly in this
- * calculation, since we need a signed 32-bit result to
- * be sign-extended to 64 bits when it's added to the
- * %rip value and yield the same 64-bit result that the
- * sign-extension of the original signed 32-bit
- * displacement would have given.
- */
- disp = (u8 *) p->addr + *((s32 *) insn) -
- (u8 *) p->ainsn.insn;
- BUG_ON((s64) (s32) disp != disp); /* Sanity check. */
- *(s32 *)insn = (s32) disp;
- }
+ if (insn_rip_relative(&insn)) {
+ s64 newdisp;
+ u8 *disp;
+ insn_get_displacement(&insn);
+ /*
+ * The copied instruction uses the %rip-relative addressing
+ * mode. Adjust the displacement for the difference between
+ * the original location of this instruction and the location
+ * of the copy that will actually be run. The tricky bit here
+ * is making sure that the sign extension happens correctly in
+ * this calculation, since we need a signed 32-bit result to
+ * be sign-extended to 64 bits when it's added to the %rip
+ * value and yield the same 64-bit result that the sign-
+ * extension of the original signed 32-bit displacement would
+ * have given.
+ */
+ newdisp = (u8 *) p->addr + (s64) insn.displacement.value -
+ (u8 *) p->ainsn.insn;
+ BUG_ON((s64) (s32) newdisp != newdisp); /* Sanity check. */
+ disp = (u8 *) p->ainsn.insn + insn_offset_displacement(&insn);
+ *(s32 *) disp = (s32) newdisp;
}
#endif
}
@@ -359,6 +349,8 @@ static void __kprobes arch_copy_kprobe(struct kprobe *p)
int __kprobes arch_prepare_kprobe(struct kprobe *p)
{
+ if (!can_probe((unsigned long)p->addr))
+ return -EILSEQ;
/* insn: must be on special executable page on x86. */
p->ainsn.insn = get_insn_slot();
if (!p->ainsn.insn)
@@ -472,17 +464,6 @@ static int __kprobes reenter_kprobe(struct kprobe *p, struct pt_regs *regs,
{
switch (kcb->kprobe_status) {
case KPROBE_HIT_SSDONE:
-#ifdef CONFIG_X86_64
- /* TODO: Provide re-entrancy from post_kprobes_handler() and
- * avoid exception stack corruption while single-stepping on
- * the instruction of the new probe.
- */
- arch_disarm_kprobe(p);
- regs->ip = (unsigned long)p->addr;
- reset_current_kprobe();
- preempt_enable_no_resched();
- break;
-#endif
case KPROBE_HIT_ACTIVE:
save_previous_kprobe(kcb);
set_current_kprobe(p, regs, kcb);
@@ -491,18 +472,16 @@ static int __kprobes reenter_kprobe(struct kprobe *p, struct pt_regs *regs,
kcb->kprobe_status = KPROBE_REENTER;
break;
case KPROBE_HIT_SS:
- if (p == kprobe_running()) {
- regs->flags &= ~X86_EFLAGS_TF;
- regs->flags |= kcb->kprobe_saved_flags;
- return 0;
- } else {
- /* A probe has been hit in the codepath leading up
- * to, or just after, single-stepping of a probed
- * instruction. This entire codepath should strictly
- * reside in .kprobes.text section. Raise a warning
- * to highlight this peculiar case.
- */
- }
+ /* A probe has been hit in the codepath leading up to, or just
+ * after, single-stepping of a probed instruction. This entire
+ * codepath should strictly reside in .kprobes.text section.
+ * Raise a BUG or we'll continue in an endless reentering loop
+ * and eventually a stack overflow.
+ */
+ printk(KERN_WARNING "Unrecoverable kprobe detected at %p.\n",
+ p->addr);
+ dump_kprobe(p);
+ BUG();
default:
/* impossible cases */
WARN_ON(1);
@@ -967,8 +946,14 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
ret = NOTIFY_STOP;
break;
case DIE_DEBUG:
- if (post_kprobe_handler(args->regs))
+ if (post_kprobe_handler(args->regs)) {
+ /*
+ * Reset the BS bit in dr6 (pointed by args->err) to
+ * denote completion of processing
+ */
+ (*(unsigned long *)ERR_PTR(args->err)) &= ~DR_STEP;
ret = NOTIFY_STOP;
+ }
break;
case DIE_GPF:
/*
diff --git a/arch/x86/kernel/machine_kexec_32.c b/arch/x86/kernel/machine_kexec_32.c
index c1c429d00130c2a233b35f69449d5a02a9f6f2e9..c843f8406da2b95f416cc9a83c2bead2d4d17ae6 100644
--- a/arch/x86/kernel/machine_kexec_32.c
+++ b/arch/x86/kernel/machine_kexec_32.c
@@ -25,6 +25,7 @@
#include
#include
#include
+#include
static void set_idt(void *newidt, __u16 limit)
{
@@ -202,6 +203,7 @@ void machine_kexec(struct kimage *image)
/* Interrupts aren't acceptable while we reboot */
local_irq_disable();
+ hw_breakpoint_disable();
if (image->preserve_context) {
#ifdef CONFIG_X86_IO_APIC
diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
index 84c3bf209e98a390ff536e46fd8fec362479f22a..4a8bb82248ae8a9a945854105c19447fec8a6530 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -18,6 +18,7 @@
#include
#include
#include
+#include
static int init_one_level2_page(struct kimage *image, pgd_t *pgd,
unsigned long addr)
@@ -282,6 +283,7 @@ void machine_kexec(struct kimage *image)
/* Interrupts aren't acceptable while we reboot */
local_irq_disable();
+ hw_breakpoint_disable();
if (image->preserve_context) {
#ifdef CONFIG_X86_IO_APIC
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 5284cd2b57769f53e79f520ecc6f8199720497cf..744508e7cfdd051e3896fe5ec28d5d3da0f3c16c 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -10,6 +10,7 @@
#include
#include
#include
+#include
#include
#include
#include
@@ -17,6 +18,7 @@
#include
#include
#include
+#include
unsigned long idle_halt;
EXPORT_SYMBOL(idle_halt);
@@ -103,14 +105,7 @@ void flush_thread(void)
}
#endif
- clear_tsk_thread_flag(tsk, TIF_DEBUG);
-
- tsk->thread.debugreg0 = 0;
- tsk->thread.debugreg1 = 0;
- tsk->thread.debugreg2 = 0;
- tsk->thread.debugreg3 = 0;
- tsk->thread.debugreg6 = 0;
- tsk->thread.debugreg7 = 0;
+ flush_ptrace_hw_breakpoint(tsk);
memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array));
/*
* Forget coprocessor state..
@@ -192,16 +187,6 @@ void __switch_to_xtra(struct task_struct *prev_p, struct task_struct *next_p,
else if (next->debugctlmsr != prev->debugctlmsr)
update_debugctlmsr(next->debugctlmsr);
- if (test_tsk_thread_flag(next_p, TIF_DEBUG)) {
- set_debugreg(next->debugreg0, 0);
- set_debugreg(next->debugreg1, 1);
- set_debugreg(next->debugreg2, 2);
- set_debugreg(next->debugreg3, 3);
- /* no 4 and 5 */
- set_debugreg(next->debugreg6, 6);
- set_debugreg(next->debugreg7, 7);
- }
-
if (test_tsk_thread_flag(prev_p, TIF_NOTSC) ^
test_tsk_thread_flag(next_p, TIF_NOTSC)) {
/* prev and next are different */
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index 4cf79567cdab0728b33c2f9698e3a5b535e4eb28..d5bd3132ee706d764510eec5058cf3e214cb2cc2 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -58,6 +58,7 @@
#include
#include
#include
+#include
asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
@@ -259,7 +260,12 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
task_user_gs(p) = get_user_gs(regs);
+ p->thread.io_bitmap_ptr = NULL;
tsk = current;
+ err = -ENOMEM;
+
+ memset(p->thread.ptrace_bps, 0, sizeof(p->thread.ptrace_bps));
+
if (unlikely(test_tsk_thread_flag(tsk, TIF_IO_BITMAP))) {
p->thread.io_bitmap_ptr = kmemdup(tsk->thread.io_bitmap_ptr,
IO_BITMAP_BYTES, GFP_KERNEL);
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index eb62cbcaa490ad553ef5d70b6751a2288d25089e..70cf15873f3d65da38e42fbbb670555d2fc22722 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -52,6 +52,7 @@
#include
#include
#include
+#include
asmlinkage extern void ret_from_fork(void);
@@ -297,12 +298,16 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
p->thread.fs = me->thread.fs;
p->thread.gs = me->thread.gs;
+ p->thread.io_bitmap_ptr = NULL;
savesegment(gs, p->thread.gsindex);
savesegment(fs, p->thread.fsindex);
savesegment(es, p->thread.es);
savesegment(ds, p->thread.ds);
+ err = -ENOMEM;
+ memset(p->thread.ptrace_bps, 0, sizeof(p->thread.ptrace_bps));
+
if (unlikely(test_tsk_thread_flag(me, TIF_IO_BITMAP))) {
p->thread.io_bitmap_ptr = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL);
if (!p->thread.io_bitmap_ptr) {
@@ -341,6 +346,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
kfree(p->thread.io_bitmap_ptr);
p->thread.io_bitmap_max = 0;
}
+
return err;
}
@@ -495,6 +501,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
*/
if (preload_fpu)
__math_state_restore();
+
return prev_p;
}
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 7b058a2dc66afecdaeb58877102957dff77e7d81..04d182a7cfdbd6e3c88c41658f6d0a91878e6366 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -22,6 +22,8 @@
#include
#include
#include
+#include
+#include
#include
#include
@@ -34,6 +36,7 @@
#include
#include
#include
+#include
#include "tls.h"
@@ -49,6 +52,118 @@ enum x86_regset {
REGSET_IOPERM32,
};
+struct pt_regs_offset {
+ const char *name;
+ int offset;
+};
+
+#define REG_OFFSET_NAME(r) {.name = #r, .offset = offsetof(struct pt_regs, r)}
+#define REG_OFFSET_END {.name = NULL, .offset = 0}
+
+static const struct pt_regs_offset regoffset_table[] = {
+#ifdef CONFIG_X86_64
+ REG_OFFSET_NAME(r15),
+ REG_OFFSET_NAME(r14),
+ REG_OFFSET_NAME(r13),
+ REG_OFFSET_NAME(r12),
+ REG_OFFSET_NAME(r11),
+ REG_OFFSET_NAME(r10),
+ REG_OFFSET_NAME(r9),
+ REG_OFFSET_NAME(r8),
+#endif
+ REG_OFFSET_NAME(bx),
+ REG_OFFSET_NAME(cx),
+ REG_OFFSET_NAME(dx),
+ REG_OFFSET_NAME(si),
+ REG_OFFSET_NAME(di),
+ REG_OFFSET_NAME(bp),
+ REG_OFFSET_NAME(ax),
+#ifdef CONFIG_X86_32
+ REG_OFFSET_NAME(ds),
+ REG_OFFSET_NAME(es),
+ REG_OFFSET_NAME(fs),
+ REG_OFFSET_NAME(gs),
+#endif
+ REG_OFFSET_NAME(orig_ax),
+ REG_OFFSET_NAME(ip),
+ REG_OFFSET_NAME(cs),
+ REG_OFFSET_NAME(flags),
+ REG_OFFSET_NAME(sp),
+ REG_OFFSET_NAME(ss),
+ REG_OFFSET_END,
+};
+
+/**
+ * regs_query_register_offset() - query register offset from its name
+ * @name: the name of a register
+ *
+ * regs_query_register_offset() returns the offset of a register in struct
+ * pt_regs from its name. If the name is invalid, this returns -EINVAL;
+ */
+int regs_query_register_offset(const char *name)
+{
+ const struct pt_regs_offset *roff;
+ for (roff = regoffset_table; roff->name != NULL; roff++)
+ if (!strcmp(roff->name, name))
+ return roff->offset;
+ return -EINVAL;
+}
+
+/**
+ * regs_query_register_name() - query register name from its offset
+ * @offset: the offset of a register in struct pt_regs.
+ *
+ * regs_query_register_name() returns the name of a register from its
+ * offset in struct pt_regs. If the @offset is invalid, this returns NULL;
+ */
+const char *regs_query_register_name(unsigned int offset)
+{
+ const struct pt_regs_offset *roff;
+ for (roff = regoffset_table; roff->name != NULL; roff++)
+ if (roff->offset == offset)
+ return roff->name;
+ return NULL;
+}
+
+static const int arg_offs_table[] = {
+#ifdef CONFIG_X86_32
+ [0] = offsetof(struct pt_regs, ax),
+ [1] = offsetof(struct pt_regs, dx),
+ [2] = offsetof(struct pt_regs, cx)
+#else /* CONFIG_X86_64 */
+ [0] = offsetof(struct pt_regs, di),
+ [1] = offsetof(struct pt_regs, si),
+ [2] = offsetof(struct pt_regs, dx),
+ [3] = offsetof(struct pt_regs, cx),
+ [4] = offsetof(struct pt_regs, r8),
+ [5] = offsetof(struct pt_regs, r9)
+#endif
+};
+
+/**
+ * regs_get_argument_nth() - get Nth argument at function call
+ * @regs: pt_regs which contains registers at function entry.
+ * @n: argument number.
+ *
+ * regs_get_argument_nth() returns @n th argument of a function call.
+ * Since usually the kernel stack will be changed right after function entry,
+ * you must use this at function entry. If the @n th entry is NOT in the
+ * kernel stack or pt_regs, this returns 0.
+ */
+unsigned long regs_get_argument_nth(struct pt_regs *regs, unsigned int n)
+{
+ if (n < ARRAY_SIZE(arg_offs_table))
+ return *(unsigned long *)((char *)regs + arg_offs_table[n]);
+ else {
+ /*
+ * The typical case: arg n is on the stack.
+ * (Note: stack[0] = return address, so skip it)
+ */
+ n -= ARRAY_SIZE(arg_offs_table);
+ return regs_get_kernel_stack_nth(regs, 1 + n);
+ }
+}
+
/*
* does not yet catch signals sent when the child dies.
* in exit.c or in signal.c.
@@ -137,11 +252,6 @@ static int set_segment_reg(struct task_struct *task,
return 0;
}
-static unsigned long debugreg_addr_limit(struct task_struct *task)
-{
- return TASK_SIZE - 3;
-}
-
#else /* CONFIG_X86_64 */
#define FLAG_MASK (FLAG_MASK_32 | X86_EFLAGS_NT)
@@ -266,15 +376,6 @@ static int set_segment_reg(struct task_struct *task,
return 0;
}
-static unsigned long debugreg_addr_limit(struct task_struct *task)
-{
-#ifdef CONFIG_IA32_EMULATION
- if (test_tsk_thread_flag(task, TIF_IA32))
- return IA32_PAGE_OFFSET - 3;
-#endif
- return TASK_SIZE_MAX - 7;
-}
-
#endif /* CONFIG_X86_32 */
static unsigned long get_flags(struct task_struct *task)
@@ -454,98 +555,238 @@ static int genregs_set(struct task_struct *target,
return ret;
}
+static void ptrace_triggered(struct perf_event *bp, void *data)
+{
+ int i;
+ struct thread_struct *thread = &(current->thread);
+
+ /*
+ * Store in the virtual DR6 register the fact that the breakpoint
+ * was hit so the thread's debugger will see it.
+ */
+ for (i = 0; i < HBP_NUM; i++) {
+ if (thread->ptrace_bps[i] == bp)
+ break;
+ }
+
+ thread->debugreg6 |= (DR_TRAP0 << i);
+}
+
/*
- * This function is trivial and will be inlined by the compiler.
- * Having it separates the implementation details of debug
- * registers from the interface details of ptrace.
+ * Walk through every ptrace breakpoints for this thread and
+ * build the dr7 value on top of their attributes.
+ *
*/
-static unsigned long ptrace_get_debugreg(struct task_struct *child, int n)
+static unsigned long ptrace_get_dr7(struct perf_event *bp[])
{
- switch (n) {
- case 0: return child->thread.debugreg0;
- case 1: return child->thread.debugreg1;
- case 2: return child->thread.debugreg2;
- case 3: return child->thread.debugreg3;
- case 6: return child->thread.debugreg6;
- case 7: return child->thread.debugreg7;
+ int i;
+ int dr7 = 0;
+ struct arch_hw_breakpoint *info;
+
+ for (i = 0; i < HBP_NUM; i++) {
+ if (bp[i] && !bp[i]->attr.disabled) {
+ info = counter_arch_bp(bp[i]);
+ dr7 |= encode_dr7(i, info->len, info->type);
+ }
}
- return 0;
+
+ return dr7;
}
-static int ptrace_set_debugreg(struct task_struct *child,
- int n, unsigned long data)
+static struct perf_event *
+ptrace_modify_breakpoint(struct perf_event *bp, int len, int type,
+ struct task_struct *tsk, int disabled)
{
- int i;
+ int err;
+ int gen_len, gen_type;
+ DEFINE_BREAKPOINT_ATTR(attr);
- if (unlikely(n == 4 || n == 5))
- return -EIO;
+ /*
+ * We shoud have at least an inactive breakpoint at this
+ * slot. It means the user is writing dr7 without having
+ * written the address register first
+ */
+ if (!bp)
+ return ERR_PTR(-EINVAL);
- if (n < 4 && unlikely(data >= debugreg_addr_limit(child)))
- return -EIO;
+ err = arch_bp_generic_fields(len, type, &gen_len, &gen_type);
+ if (err)
+ return ERR_PTR(err);
- switch (n) {
- case 0: child->thread.debugreg0 = data; break;
- case 1: child->thread.debugreg1 = data; break;
- case 2: child->thread.debugreg2 = data; break;
- case 3: child->thread.debugreg3 = data; break;
+ attr = bp->attr;
+ attr.bp_len = gen_len;
+ attr.bp_type = gen_type;
+ attr.disabled = disabled;
- case 6:
- if ((data & ~0xffffffffUL) != 0)
- return -EIO;
- child->thread.debugreg6 = data;
- break;
+ return modify_user_hw_breakpoint(bp, &attr, bp->callback, tsk);
+}
+
+/*
+ * Handle ptrace writes to debug register 7.
+ */
+static int ptrace_write_dr7(struct task_struct *tsk, unsigned long data)
+{
+ struct thread_struct *thread = &(tsk->thread);
+ unsigned long old_dr7;
+ int i, orig_ret = 0, rc = 0;
+ int enabled, second_pass = 0;
+ unsigned len, type;
+ struct perf_event *bp;
+
+ data &= ~DR_CONTROL_RESERVED;
+ old_dr7 = ptrace_get_dr7(thread->ptrace_bps);
+restore:
+ /*
+ * Loop through all the hardware breakpoints, making the
+ * appropriate changes to each.
+ */
+ for (i = 0; i < HBP_NUM; i++) {
+ enabled = decode_dr7(data, i, &len, &type);
+ bp = thread->ptrace_bps[i];
+
+ if (!enabled) {
+ if (bp) {
+ /*
+ * Don't unregister the breakpoints right-away,
+ * unless all register_user_hw_breakpoint()
+ * requests have succeeded. This prevents
+ * any window of opportunity for debug
+ * register grabbing by other users.
+ */
+ if (!second_pass)
+ continue;
+
+ thread->ptrace_bps[i] = NULL;
+ bp = ptrace_modify_breakpoint(bp, len, type,
+ tsk, 1);
+ if (IS_ERR(bp)) {
+ rc = PTR_ERR(bp);
+ thread->ptrace_bps[i] = NULL;
+ break;
+ }
+ thread->ptrace_bps[i] = bp;
+ }
+ continue;
+ }
+
+ bp = ptrace_modify_breakpoint(bp, len, type, tsk, 0);
+
+ /* Incorrect bp, or we have a bug in bp API */
+ if (IS_ERR(bp)) {
+ rc = PTR_ERR(bp);
+ thread->ptrace_bps[i] = NULL;
+ break;
+ }
+ thread->ptrace_bps[i] = bp;
+ }
+ /*
+ * Make a second pass to free the remaining unused breakpoints
+ * or to restore the original breakpoints if an error occurred.
+ */
+ if (!second_pass) {
+ second_pass = 1;
+ if (rc < 0) {
+ orig_ret = rc;
+ data = old_dr7;
+ }
+ goto restore;
+ }
+ return ((orig_ret < 0) ? orig_ret : rc);
+}
+
+/*
+ * Handle PTRACE_PEEKUSR calls for the debug register area.
+ */
+static unsigned long ptrace_get_debugreg(struct task_struct *tsk, int n)
+{
+ struct thread_struct *thread = &(tsk->thread);
+ unsigned long val = 0;
- case 7:
+ if (n < HBP_NUM) {
+ struct perf_event *bp;
+ bp = thread->ptrace_bps[n];
+ if (!bp)
+ return 0;
+ val = bp->hw.info.address;
+ } else if (n == 6) {
+ val = thread->debugreg6;
+ } else if (n == 7) {
+ val = ptrace_get_dr7(thread->ptrace_bps);
+ }
+ return val;
+}
+
+static int ptrace_set_breakpoint_addr(struct task_struct *tsk, int nr,
+ unsigned long addr)
+{
+ struct perf_event *bp;
+ struct thread_struct *t = &tsk->thread;
+ DEFINE_BREAKPOINT_ATTR(attr);
+
+ if (!t->ptrace_bps[nr]) {
/*
- * Sanity-check data. Take one half-byte at once with
- * check = (val >> (16 + 4*i)) & 0xf. It contains the
- * R/Wi and LENi bits; bits 0 and 1 are R/Wi, and bits
- * 2 and 3 are LENi. Given a list of invalid values,
- * we do mask |= 1 << invalid_value, so that
- * (mask >> check) & 1 is a correct test for invalid
- * values.
- *
- * R/Wi contains the type of the breakpoint /
- * watchpoint, LENi contains the length of the watched
- * data in the watchpoint case.
- *
- * The invalid values are:
- * - LENi == 0x10 (undefined), so mask |= 0x0f00. [32-bit]
- * - R/Wi == 0x10 (break on I/O reads or writes), so
- * mask |= 0x4444.
- * - R/Wi == 0x00 && LENi != 0x00, so we have mask |=
- * 0x1110.
- *
- * Finally, mask = 0x0f00 | 0x4444 | 0x1110 == 0x5f54.
- *
- * See the Intel Manual "System Programming Guide",
- * 15.2.4
- *
- * Note that LENi == 0x10 is defined on x86_64 in long
- * mode (i.e. even for 32-bit userspace software, but
- * 64-bit kernel), so the x86_64 mask value is 0x5454.
- * See the AMD manual no. 24593 (AMD64 System Programming)
+ * Put stub len and type to register (reserve) an inactive but
+ * correct bp
*/
-#ifdef CONFIG_X86_32
-#define DR7_MASK 0x5f54
-#else
-#define DR7_MASK 0x5554
-#endif
- data &= ~DR_CONTROL_RESERVED;
- for (i = 0; i < 4; i++)
- if ((DR7_MASK >> ((data >> (16 + 4*i)) & 0xf)) & 1)
- return -EIO;
- child->thread.debugreg7 = data;
- if (data)
- set_tsk_thread_flag(child, TIF_DEBUG);
- else
- clear_tsk_thread_flag(child, TIF_DEBUG);
- break;
+ attr.bp_addr = addr;
+ attr.bp_len = HW_BREAKPOINT_LEN_1;
+ attr.bp_type = HW_BREAKPOINT_W;
+ attr.disabled = 1;
+
+ bp = register_user_hw_breakpoint(&attr, ptrace_triggered, tsk);
+ } else {
+ bp = t->ptrace_bps[nr];
+ t->ptrace_bps[nr] = NULL;
+
+ attr = bp->attr;
+ attr.bp_addr = addr;
+ bp = modify_user_hw_breakpoint(bp, &attr, bp->callback, tsk);
}
+ /*
+ * CHECKME: the previous code returned -EIO if the addr wasn't a
+ * valid task virtual addr. The new one will return -EINVAL in this
+ * case.
+ * -EINVAL may be what we want for in-kernel breakpoints users, but
+ * -EIO looks better for ptrace, since we refuse a register writing
+ * for the user. And anyway this is the previous behaviour.
+ */
+ if (IS_ERR(bp))
+ return PTR_ERR(bp);
+
+ t->ptrace_bps[nr] = bp;
return 0;
}
+/*
+ * Handle PTRACE_POKEUSR calls for the debug register area.
+ */
+int ptrace_set_debugreg(struct task_struct *tsk, int n, unsigned long val)
+{
+ struct thread_struct *thread = &(tsk->thread);
+ int rc = 0;
+
+ /* There are no DR4 or DR5 registers */
+ if (n == 4 || n == 5)
+ return -EIO;
+
+ if (n == 6) {
+ thread->debugreg6 = val;
+ goto ret_path;
+ }
+ if (n < HBP_NUM) {
+ rc = ptrace_set_breakpoint_addr(tsk, n, val);
+ if (rc)
+ return rc;
+ }
+ /* All that's left is DR7 */
+ if (n == 7)
+ rc = ptrace_write_dr7(tsk, val);
+
+ret_path:
+ return rc;
+}
+
/*
* These access the current or another (stopped) task's io permission
* bitmap for debugging or core dump.
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 2a34f9c5be214fd428c4197a1f09819d65759a37..c0ca8f921c91f24091cb89af9fad7360c6312313 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -109,6 +109,7 @@
#ifdef CONFIG_X86_64
#include
#endif
+#include
/*
* end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries.
@@ -1031,6 +1032,8 @@ void __init setup_arch(char **cmdline_p)
#endif
#endif
x86_init.oem.banner();
+
+ mcheck_init();
}
#ifdef CONFIG_X86_32
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index 6a44a76055adcb781572978d1e332a9923f7e2d6..fbf3b07c856740805f0dbe64a85fa0d2131df37e 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -799,15 +799,6 @@ static void do_signal(struct pt_regs *regs)
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
- /*
- * Re-enable any watchpoints before delivering the
- * signal to user space. The processor register will
- * have been cleared if the watchpoint triggered
- * inside the kernel.
- */
- if (current->thread.debugreg7)
- set_debugreg(current->thread.debugreg7, 7);
-
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
/*
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 7e37dcee0cc352df1104e211d77cce2f99a9e4e8..33399176512a8a2c4c718d53ad76bdea631bd46e 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -529,77 +529,56 @@ asmlinkage __kprobes struct pt_regs *sync_regs(struct pt_regs *eregs)
dotraplinkage void __kprobes do_debug(struct pt_regs *regs, long error_code)
{
struct task_struct *tsk = current;
- unsigned long condition;
+ unsigned long dr6;
int si_code;
- get_debugreg(condition, 6);
+ get_debugreg(dr6, 6);
/* Catch kmemcheck conditions first of all! */
- if (condition & DR_STEP && kmemcheck_trap(regs))
+ if ((dr6 & DR_STEP) && kmemcheck_trap(regs))
return;
+ /* DR6 may or may not be cleared by the CPU */
+ set_debugreg(0, 6);
/*
* The processor cleared BTF, so don't mark that we need it set.
*/
clear_tsk_thread_flag(tsk, TIF_DEBUGCTLMSR);
tsk->thread.debugctlmsr = 0;
- if (notify_die(DIE_DEBUG, "debug", regs, condition, error_code,
- SIGTRAP) == NOTIFY_STOP)
+ /* Store the virtualized DR6 value */
+ tsk->thread.debugreg6 = dr6;
+
+ if (notify_die(DIE_DEBUG, "debug", regs, PTR_ERR(&dr6), error_code,
+ SIGTRAP) == NOTIFY_STOP)
return;
/* It's safe to allow irq's after DR6 has been saved */
preempt_conditional_sti(regs);
- /* Mask out spurious debug traps due to lazy DR7 setting */
- if (condition & (DR_TRAP0|DR_TRAP1|DR_TRAP2|DR_TRAP3)) {
- if (!tsk->thread.debugreg7)
- goto clear_dr7;
+ if (regs->flags & X86_VM_MASK) {
+ handle_vm86_trap((struct kernel_vm86_regs *) regs,
+ error_code, 1);
+ return;
}
-#ifdef CONFIG_X86_32
- if (regs->flags & X86_VM_MASK)
- goto debug_vm86;
-#endif
-
- /* Save debug status register where ptrace can see it */
- tsk->thread.debugreg6 = condition;
-
/*
- * Single-stepping through TF: make sure we ignore any events in
- * kernel space (but re-enable TF when returning to user mode).
+ * Single-stepping through system calls: ignore any exceptions in
+ * kernel space, but re-enable TF when returning to user mode.
+ *
+ * We already checked v86 mode above, so we can check for kernel mode
+ * by just checking the CPL of CS.
*/
- if (condition & DR_STEP) {
- if (!user_mode(regs))
- goto clear_TF_reenable;
+ if ((dr6 & DR_STEP) && !user_mode(regs)) {
+ tsk->thread.debugreg6 &= ~DR_STEP;
+ set_tsk_thread_flag(tsk, TIF_SINGLESTEP);
+ regs->flags &= ~X86_EFLAGS_TF;
}
-
- si_code = get_si_code(condition);
- /* Ok, finally something we can handle */
- send_sigtrap(tsk, regs, error_code, si_code);
-
- /*
- * Disable additional traps. They'll be re-enabled when
- * the signal is delivered.
- */
-clear_dr7:
- set_debugreg(0, 7);
+ si_code = get_si_code(tsk->thread.debugreg6);
+ if (tsk->thread.debugreg6 & (DR_STEP | DR_TRAP_BITS))
+ send_sigtrap(tsk, regs, error_code, si_code);
preempt_conditional_cli(regs);
- return;
-#ifdef CONFIG_X86_32
-debug_vm86:
- /* reenable preemption: handle_vm86_trap() might sleep */
- dec_preempt_count();
- handle_vm86_trap((struct kernel_vm86_regs *) regs, error_code, 1);
- conditional_cli(regs);
- return;
-#endif
-
-clear_TF_reenable:
- set_tsk_thread_flag(tsk, TIF_SINGLESTEP);
- regs->flags &= ~X86_EFLAGS_TF;
- preempt_conditional_cli(regs);
return;
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index ae07d261527cba458ed1682118b19295bc997847..4fc80174191ce4b17549b643fe11dee645286c3f 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -42,6 +42,7 @@
#define CREATE_TRACE_POINTS
#include "trace.h"
+#include
#include
#include
#include
@@ -3643,14 +3644,15 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
trace_kvm_entry(vcpu->vcpu_id);
kvm_x86_ops->run(vcpu, kvm_run);
- if (unlikely(vcpu->arch.switch_db_regs || test_thread_flag(TIF_DEBUG))) {
- set_debugreg(current->thread.debugreg0, 0);
- set_debugreg(current->thread.debugreg1, 1);
- set_debugreg(current->thread.debugreg2, 2);
- set_debugreg(current->thread.debugreg3, 3);
- set_debugreg(current->thread.debugreg6, 6);
- set_debugreg(current->thread.debugreg7, 7);
- }
+ /*
+ * If the guest has used debug registers, at least dr7
+ * will be disabled while returning to the host.
+ * If we don't have active breakpoints in the host, we don't
+ * care about the messed up debug address registers. But if
+ * we have some of them active, restore the old state.
+ */
+ if (hw_breakpoint_active())
+ hw_breakpoint_restore();
set_bit(KVM_REQ_KICK, &vcpu->requests);
local_irq_enable();
diff --git a/arch/x86/lib/.gitignore b/arch/x86/lib/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..8df89f0a3fe6231603212d7c5102d3452c787e34
--- /dev/null
+++ b/arch/x86/lib/.gitignore
@@ -0,0 +1 @@
+inat-tables.c
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index 85f5db95c60f03718f292080587f7faa337ef570..a2d6472895fb309884d442b100502447fcb4c5e9 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -2,12 +2,25 @@
# Makefile for x86 specific library files.
#
+inat_tables_script = $(srctree)/arch/x86/tools/gen-insn-attr-x86.awk
+inat_tables_maps = $(srctree)/arch/x86/lib/x86-opcode-map.txt
+quiet_cmd_inat_tables = GEN $@
+ cmd_inat_tables = $(AWK) -f $(inat_tables_script) $(inat_tables_maps) > $@
+
+$(obj)/inat-tables.c: $(inat_tables_script) $(inat_tables_maps)
+ $(call cmd,inat_tables)
+
+$(obj)/inat.o: $(obj)/inat-tables.c
+
+clean-files := inat-tables.c
+
obj-$(CONFIG_SMP) := msr.o
lib-y := delay.o
lib-y += thunk_$(BITS).o
lib-y += usercopy_$(BITS).o getuser.o putuser.o
lib-y += memcpy_$(BITS).o
+lib-y += insn.o inat.o
obj-y += msr-reg.o msr-reg-export.o
diff --git a/arch/x86/lib/inat.c b/arch/x86/lib/inat.c
new file mode 100644
index 0000000000000000000000000000000000000000..46fc4ee09fc490ecbb6a0d312b524fc92ff3e81b
--- /dev/null
+++ b/arch/x86/lib/inat.c
@@ -0,0 +1,90 @@
+/*
+ * x86 instruction attribute tables
+ *
+ * Written by Masami Hiramatsu
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+#include
+
+/* Attribute tables are generated from opcode map */
+#include "inat-tables.c"
+
+/* Attribute search APIs */
+insn_attr_t inat_get_opcode_attribute(insn_byte_t opcode)
+{
+ return inat_primary_table[opcode];
+}
+
+insn_attr_t inat_get_escape_attribute(insn_byte_t opcode, insn_byte_t last_pfx,
+ insn_attr_t esc_attr)
+{
+ const insn_attr_t *table;
+ insn_attr_t lpfx_attr;
+ int n, m = 0;
+
+ n = inat_escape_id(esc_attr);
+ if (last_pfx) {
+ lpfx_attr = inat_get_opcode_attribute(last_pfx);
+ m = inat_last_prefix_id(lpfx_attr);
+ }
+ table = inat_escape_tables[n][0];
+ if (!table)
+ return 0;
+ if (inat_has_variant(table[opcode]) && m) {
+ table = inat_escape_tables[n][m];
+ if (!table)
+ return 0;
+ }
+ return table[opcode];
+}
+
+insn_attr_t inat_get_group_attribute(insn_byte_t modrm, insn_byte_t last_pfx,
+ insn_attr_t grp_attr)
+{
+ const insn_attr_t *table;
+ insn_attr_t lpfx_attr;
+ int n, m = 0;
+
+ n = inat_group_id(grp_attr);
+ if (last_pfx) {
+ lpfx_attr = inat_get_opcode_attribute(last_pfx);
+ m = inat_last_prefix_id(lpfx_attr);
+ }
+ table = inat_group_tables[n][0];
+ if (!table)
+ return inat_group_common_attribute(grp_attr);
+ if (inat_has_variant(table[X86_MODRM_REG(modrm)]) && m) {
+ table = inat_group_tables[n][m];
+ if (!table)
+ return inat_group_common_attribute(grp_attr);
+ }
+ return table[X86_MODRM_REG(modrm)] |
+ inat_group_common_attribute(grp_attr);
+}
+
+insn_attr_t inat_get_avx_attribute(insn_byte_t opcode, insn_byte_t vex_m,
+ insn_byte_t vex_p)
+{
+ const insn_attr_t *table;
+ if (vex_m > X86_VEX_M_MAX || vex_p > INAT_LSTPFX_MAX)
+ return 0;
+ table = inat_avx_tables[vex_m][vex_p];
+ if (!table)
+ return 0;
+ return table[opcode];
+}
+
diff --git a/arch/x86/lib/insn.c b/arch/x86/lib/insn.c
new file mode 100644
index 0000000000000000000000000000000000000000..9f33b984d0efe1d5ba0e212ba83841f7588b9aac
--- /dev/null
+++ b/arch/x86/lib/insn.c
@@ -0,0 +1,516 @@
+/*
+ * x86 instruction analysis
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) IBM Corporation, 2002, 2004, 2009
+ */
+
+#include
+#include
+#include
+
+#define get_next(t, insn) \
+ ({t r; r = *(t*)insn->next_byte; insn->next_byte += sizeof(t); r; })
+
+#define peek_next(t, insn) \
+ ({t r; r = *(t*)insn->next_byte; r; })
+
+#define peek_nbyte_next(t, insn, n) \
+ ({t r; r = *(t*)((insn)->next_byte + n); r; })
+
+/**
+ * insn_init() - initialize struct insn
+ * @insn: &struct insn to be initialized
+ * @kaddr: address (in kernel memory) of instruction (or copy thereof)
+ * @x86_64: !0 for 64-bit kernel or 64-bit app
+ */
+void insn_init(struct insn *insn, const void *kaddr, int x86_64)
+{
+ memset(insn, 0, sizeof(*insn));
+ insn->kaddr = kaddr;
+ insn->next_byte = kaddr;
+ insn->x86_64 = x86_64 ? 1 : 0;
+ insn->opnd_bytes = 4;
+ if (x86_64)
+ insn->addr_bytes = 8;
+ else
+ insn->addr_bytes = 4;
+}
+
+/**
+ * insn_get_prefixes - scan x86 instruction prefix bytes
+ * @insn: &struct insn containing instruction
+ *
+ * Populates the @insn->prefixes bitmap, and updates @insn->next_byte
+ * to point to the (first) opcode. No effect if @insn->prefixes.got
+ * is already set.
+ */
+void insn_get_prefixes(struct insn *insn)
+{
+ struct insn_field *prefixes = &insn->prefixes;
+ insn_attr_t attr;
+ insn_byte_t b, lb;
+ int i, nb;
+
+ if (prefixes->got)
+ return;
+
+ nb = 0;
+ lb = 0;
+ b = peek_next(insn_byte_t, insn);
+ attr = inat_get_opcode_attribute(b);
+ while (inat_is_legacy_prefix(attr)) {
+ /* Skip if same prefix */
+ for (i = 0; i < nb; i++)
+ if (prefixes->bytes[i] == b)
+ goto found;
+ if (nb == 4)
+ /* Invalid instruction */
+ break;
+ prefixes->bytes[nb++] = b;
+ if (inat_is_address_size_prefix(attr)) {
+ /* address size switches 2/4 or 4/8 */
+ if (insn->x86_64)
+ insn->addr_bytes ^= 12;
+ else
+ insn->addr_bytes ^= 6;
+ } else if (inat_is_operand_size_prefix(attr)) {
+ /* oprand size switches 2/4 */
+ insn->opnd_bytes ^= 6;
+ }
+found:
+ prefixes->nbytes++;
+ insn->next_byte++;
+ lb = b;
+ b = peek_next(insn_byte_t, insn);
+ attr = inat_get_opcode_attribute(b);
+ }
+ /* Set the last prefix */
+ if (lb && lb != insn->prefixes.bytes[3]) {
+ if (unlikely(insn->prefixes.bytes[3])) {
+ /* Swap the last prefix */
+ b = insn->prefixes.bytes[3];
+ for (i = 0; i < nb; i++)
+ if (prefixes->bytes[i] == lb)
+ prefixes->bytes[i] = b;
+ }
+ insn->prefixes.bytes[3] = lb;
+ }
+
+ /* Decode REX prefix */
+ if (insn->x86_64) {
+ b = peek_next(insn_byte_t, insn);
+ attr = inat_get_opcode_attribute(b);
+ if (inat_is_rex_prefix(attr)) {
+ insn->rex_prefix.value = b;
+ insn->rex_prefix.nbytes = 1;
+ insn->next_byte++;
+ if (X86_REX_W(b))
+ /* REX.W overrides opnd_size */
+ insn->opnd_bytes = 8;
+ }
+ }
+ insn->rex_prefix.got = 1;
+
+ /* Decode VEX prefix */
+ b = peek_next(insn_byte_t, insn);
+ attr = inat_get_opcode_attribute(b);
+ if (inat_is_vex_prefix(attr)) {
+ insn_byte_t b2 = peek_nbyte_next(insn_byte_t, insn, 1);
+ if (!insn->x86_64) {
+ /*
+ * In 32-bits mode, if the [7:6] bits (mod bits of
+ * ModRM) on the second byte are not 11b, it is
+ * LDS or LES.
+ */
+ if (X86_MODRM_MOD(b2) != 3)
+ goto vex_end;
+ }
+ insn->vex_prefix.bytes[0] = b;
+ insn->vex_prefix.bytes[1] = b2;
+ if (inat_is_vex3_prefix(attr)) {
+ b2 = peek_nbyte_next(insn_byte_t, insn, 2);
+ insn->vex_prefix.bytes[2] = b2;
+ insn->vex_prefix.nbytes = 3;
+ insn->next_byte += 3;
+ if (insn->x86_64 && X86_VEX_W(b2))
+ /* VEX.W overrides opnd_size */
+ insn->opnd_bytes = 8;
+ } else {
+ insn->vex_prefix.nbytes = 2;
+ insn->next_byte += 2;
+ }
+ }
+vex_end:
+ insn->vex_prefix.got = 1;
+
+ prefixes->got = 1;
+ return;
+}
+
+/**
+ * insn_get_opcode - collect opcode(s)
+ * @insn: &struct insn containing instruction
+ *
+ * Populates @insn->opcode, updates @insn->next_byte to point past the
+ * opcode byte(s), and set @insn->attr (except for groups).
+ * If necessary, first collects any preceding (prefix) bytes.
+ * Sets @insn->opcode.value = opcode1. No effect if @insn->opcode.got
+ * is already 1.
+ */
+void insn_get_opcode(struct insn *insn)
+{
+ struct insn_field *opcode = &insn->opcode;
+ insn_byte_t op, pfx;
+ if (opcode->got)
+ return;
+ if (!insn->prefixes.got)
+ insn_get_prefixes(insn);
+
+ /* Get first opcode */
+ op = get_next(insn_byte_t, insn);
+ opcode->bytes[0] = op;
+ opcode->nbytes = 1;
+
+ /* Check if there is VEX prefix or not */
+ if (insn_is_avx(insn)) {
+ insn_byte_t m, p;
+ m = insn_vex_m_bits(insn);
+ p = insn_vex_p_bits(insn);
+ insn->attr = inat_get_avx_attribute(op, m, p);
+ if (!inat_accept_vex(insn->attr))
+ insn->attr = 0; /* This instruction is bad */
+ goto end; /* VEX has only 1 byte for opcode */
+ }
+
+ insn->attr = inat_get_opcode_attribute(op);
+ while (inat_is_escape(insn->attr)) {
+ /* Get escaped opcode */
+ op = get_next(insn_byte_t, insn);
+ opcode->bytes[opcode->nbytes++] = op;
+ pfx = insn_last_prefix(insn);
+ insn->attr = inat_get_escape_attribute(op, pfx, insn->attr);
+ }
+ if (inat_must_vex(insn->attr))
+ insn->attr = 0; /* This instruction is bad */
+end:
+ opcode->got = 1;
+}
+
+/**
+ * insn_get_modrm - collect ModRM byte, if any
+ * @insn: &struct insn containing instruction
+ *
+ * Populates @insn->modrm and updates @insn->next_byte to point past the
+ * ModRM byte, if any. If necessary, first collects the preceding bytes
+ * (prefixes and opcode(s)). No effect if @insn->modrm.got is already 1.
+ */
+void insn_get_modrm(struct insn *insn)
+{
+ struct insn_field *modrm = &insn->modrm;
+ insn_byte_t pfx, mod;
+ if (modrm->got)
+ return;
+ if (!insn->opcode.got)
+ insn_get_opcode(insn);
+
+ if (inat_has_modrm(insn->attr)) {
+ mod = get_next(insn_byte_t, insn);
+ modrm->value = mod;
+ modrm->nbytes = 1;
+ if (inat_is_group(insn->attr)) {
+ pfx = insn_last_prefix(insn);
+ insn->attr = inat_get_group_attribute(mod, pfx,
+ insn->attr);
+ }
+ }
+
+ if (insn->x86_64 && inat_is_force64(insn->attr))
+ insn->opnd_bytes = 8;
+ modrm->got = 1;
+}
+
+
+/**
+ * insn_rip_relative() - Does instruction use RIP-relative addressing mode?
+ * @insn: &struct insn containing instruction
+ *
+ * If necessary, first collects the instruction up to and including the
+ * ModRM byte. No effect if @insn->x86_64 is 0.
+ */
+int insn_rip_relative(struct insn *insn)
+{
+ struct insn_field *modrm = &insn->modrm;
+
+ if (!insn->x86_64)
+ return 0;
+ if (!modrm->got)
+ insn_get_modrm(insn);
+ /*
+ * For rip-relative instructions, the mod field (top 2 bits)
+ * is zero and the r/m field (bottom 3 bits) is 0x5.
+ */
+ return (modrm->nbytes && (modrm->value & 0xc7) == 0x5);
+}
+
+/**
+ * insn_get_sib() - Get the SIB byte of instruction
+ * @insn: &struct insn containing instruction
+ *
+ * If necessary, first collects the instruction up to and including the
+ * ModRM byte.
+ */
+void insn_get_sib(struct insn *insn)
+{
+ insn_byte_t modrm;
+
+ if (insn->sib.got)
+ return;
+ if (!insn->modrm.got)
+ insn_get_modrm(insn);
+ if (insn->modrm.nbytes) {
+ modrm = (insn_byte_t)insn->modrm.value;
+ if (insn->addr_bytes != 2 &&
+ X86_MODRM_MOD(modrm) != 3 && X86_MODRM_RM(modrm) == 4) {
+ insn->sib.value = get_next(insn_byte_t, insn);
+ insn->sib.nbytes = 1;
+ }
+ }
+ insn->sib.got = 1;
+}
+
+
+/**
+ * insn_get_displacement() - Get the displacement of instruction
+ * @insn: &struct insn containing instruction
+ *
+ * If necessary, first collects the instruction up to and including the
+ * SIB byte.
+ * Displacement value is sign-expanded.
+ */
+void insn_get_displacement(struct insn *insn)
+{
+ insn_byte_t mod, rm, base;
+
+ if (insn->displacement.got)
+ return;
+ if (!insn->sib.got)
+ insn_get_sib(insn);
+ if (insn->modrm.nbytes) {
+ /*
+ * Interpreting the modrm byte:
+ * mod = 00 - no displacement fields (exceptions below)
+ * mod = 01 - 1-byte displacement field
+ * mod = 10 - displacement field is 4 bytes, or 2 bytes if
+ * address size = 2 (0x67 prefix in 32-bit mode)
+ * mod = 11 - no memory operand
+ *
+ * If address size = 2...
+ * mod = 00, r/m = 110 - displacement field is 2 bytes
+ *
+ * If address size != 2...
+ * mod != 11, r/m = 100 - SIB byte exists
+ * mod = 00, SIB base = 101 - displacement field is 4 bytes
+ * mod = 00, r/m = 101 - rip-relative addressing, displacement
+ * field is 4 bytes
+ */
+ mod = X86_MODRM_MOD(insn->modrm.value);
+ rm = X86_MODRM_RM(insn->modrm.value);
+ base = X86_SIB_BASE(insn->sib.value);
+ if (mod == 3)
+ goto out;
+ if (mod == 1) {
+ insn->displacement.value = get_next(char, insn);
+ insn->displacement.nbytes = 1;
+ } else if (insn->addr_bytes == 2) {
+ if ((mod == 0 && rm == 6) || mod == 2) {
+ insn->displacement.value =
+ get_next(short, insn);
+ insn->displacement.nbytes = 2;
+ }
+ } else {
+ if ((mod == 0 && rm == 5) || mod == 2 ||
+ (mod == 0 && base == 5)) {
+ insn->displacement.value = get_next(int, insn);
+ insn->displacement.nbytes = 4;
+ }
+ }
+ }
+out:
+ insn->displacement.got = 1;
+}
+
+/* Decode moffset16/32/64 */
+static void __get_moffset(struct insn *insn)
+{
+ switch (insn->addr_bytes) {
+ case 2:
+ insn->moffset1.value = get_next(short, insn);
+ insn->moffset1.nbytes = 2;
+ break;
+ case 4:
+ insn->moffset1.value = get_next(int, insn);
+ insn->moffset1.nbytes = 4;
+ break;
+ case 8:
+ insn->moffset1.value = get_next(int, insn);
+ insn->moffset1.nbytes = 4;
+ insn->moffset2.value = get_next(int, insn);
+ insn->moffset2.nbytes = 4;
+ break;
+ }
+ insn->moffset1.got = insn->moffset2.got = 1;
+}
+
+/* Decode imm v32(Iz) */
+static void __get_immv32(struct insn *insn)
+{
+ switch (insn->opnd_bytes) {
+ case 2:
+ insn->immediate.value = get_next(short, insn);
+ insn->immediate.nbytes = 2;
+ break;
+ case 4:
+ case 8:
+ insn->immediate.value = get_next(int, insn);
+ insn->immediate.nbytes = 4;
+ break;
+ }
+}
+
+/* Decode imm v64(Iv/Ov) */
+static void __get_immv(struct insn *insn)
+{
+ switch (insn->opnd_bytes) {
+ case 2:
+ insn->immediate1.value = get_next(short, insn);
+ insn->immediate1.nbytes = 2;
+ break;
+ case 4:
+ insn->immediate1.value = get_next(int, insn);
+ insn->immediate1.nbytes = 4;
+ break;
+ case 8:
+ insn->immediate1.value = get_next(int, insn);
+ insn->immediate1.nbytes = 4;
+ insn->immediate2.value = get_next(int, insn);
+ insn->immediate2.nbytes = 4;
+ break;
+ }
+ insn->immediate1.got = insn->immediate2.got = 1;
+}
+
+/* Decode ptr16:16/32(Ap) */
+static void __get_immptr(struct insn *insn)
+{
+ switch (insn->opnd_bytes) {
+ case 2:
+ insn->immediate1.value = get_next(short, insn);
+ insn->immediate1.nbytes = 2;
+ break;
+ case 4:
+ insn->immediate1.value = get_next(int, insn);
+ insn->immediate1.nbytes = 4;
+ break;
+ case 8:
+ /* ptr16:64 is not exist (no segment) */
+ return;
+ }
+ insn->immediate2.value = get_next(unsigned short, insn);
+ insn->immediate2.nbytes = 2;
+ insn->immediate1.got = insn->immediate2.got = 1;
+}
+
+/**
+ * insn_get_immediate() - Get the immediates of instruction
+ * @insn: &struct insn containing instruction
+ *
+ * If necessary, first collects the instruction up to and including the
+ * displacement bytes.
+ * Basically, most of immediates are sign-expanded. Unsigned-value can be
+ * get by bit masking with ((1 << (nbytes * 8)) - 1)
+ */
+void insn_get_immediate(struct insn *insn)
+{
+ if (insn->immediate.got)
+ return;
+ if (!insn->displacement.got)
+ insn_get_displacement(insn);
+
+ if (inat_has_moffset(insn->attr)) {
+ __get_moffset(insn);
+ goto done;
+ }
+
+ if (!inat_has_immediate(insn->attr))
+ /* no immediates */
+ goto done;
+
+ switch (inat_immediate_size(insn->attr)) {
+ case INAT_IMM_BYTE:
+ insn->immediate.value = get_next(char, insn);
+ insn->immediate.nbytes = 1;
+ break;
+ case INAT_IMM_WORD:
+ insn->immediate.value = get_next(short, insn);
+ insn->immediate.nbytes = 2;
+ break;
+ case INAT_IMM_DWORD:
+ insn->immediate.value = get_next(int, insn);
+ insn->immediate.nbytes = 4;
+ break;
+ case INAT_IMM_QWORD:
+ insn->immediate1.value = get_next(int, insn);
+ insn->immediate1.nbytes = 4;
+ insn->immediate2.value = get_next(int, insn);
+ insn->immediate2.nbytes = 4;
+ break;
+ case INAT_IMM_PTR:
+ __get_immptr(insn);
+ break;
+ case INAT_IMM_VWORD32:
+ __get_immv32(insn);
+ break;
+ case INAT_IMM_VWORD:
+ __get_immv(insn);
+ break;
+ default:
+ break;
+ }
+ if (inat_has_second_immediate(insn->attr)) {
+ insn->immediate2.value = get_next(char, insn);
+ insn->immediate2.nbytes = 1;
+ }
+done:
+ insn->immediate.got = 1;
+}
+
+/**
+ * insn_get_length() - Get the length of instruction
+ * @insn: &struct insn containing instruction
+ *
+ * If necessary, first collects the instruction up to and including the
+ * immediates bytes.
+ */
+void insn_get_length(struct insn *insn)
+{
+ if (insn->length)
+ return;
+ if (!insn->immediate.got)
+ insn_get_immediate(insn);
+ insn->length = (unsigned char)((unsigned long)insn->next_byte
+ - (unsigned long)insn->kaddr);
+}
diff --git a/arch/x86/lib/x86-opcode-map.txt b/arch/x86/lib/x86-opcode-map.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a793da5e560e3c88804850e957d00a6024b4eb65
--- /dev/null
+++ b/arch/x86/lib/x86-opcode-map.txt
@@ -0,0 +1,893 @@
+# x86 Opcode Maps
+#
+#
+# Table: table-name
+# Referrer: escaped-name
+# AVXcode: avx-code
+# opcode: mnemonic|GrpXXX [operand1[,operand2...]] [(extra1)[,(extra2)...] [| 2nd-mnemonic ...]
+# (or)
+# opcode: escape # escaped-name
+# EndTable
+#
+#
+# GrpTable: GrpXXX
+# reg: mnemonic [operand1[,operand2...]] [(extra1)[,(extra2)...] [| 2nd-mnemonic ...]
+# EndTable
+#
+# AVX Superscripts
+# (VEX): this opcode can accept VEX prefix.
+# (oVEX): this opcode requires VEX prefix.
+# (o128): this opcode only supports 128bit VEX.
+# (o256): this opcode only supports 256bit VEX.
+#
+
+Table: one byte opcode
+Referrer:
+AVXcode:
+# 0x00 - 0x0f
+00: ADD Eb,Gb
+01: ADD Ev,Gv
+02: ADD Gb,Eb
+03: ADD Gv,Ev
+04: ADD AL,Ib
+05: ADD rAX,Iz
+06: PUSH ES (i64)
+07: POP ES (i64)
+08: OR Eb,Gb
+09: OR Ev,Gv
+0a: OR Gb,Eb
+0b: OR Gv,Ev
+0c: OR AL,Ib
+0d: OR rAX,Iz
+0e: PUSH CS (i64)
+0f: escape # 2-byte escape
+# 0x10 - 0x1f
+10: ADC Eb,Gb
+11: ADC Ev,Gv
+12: ADC Gb,Eb
+13: ADC Gv,Ev
+14: ADC AL,Ib
+15: ADC rAX,Iz
+16: PUSH SS (i64)
+17: POP SS (i64)
+18: SBB Eb,Gb
+19: SBB Ev,Gv
+1a: SBB Gb,Eb
+1b: SBB Gv,Ev
+1c: SBB AL,Ib
+1d: SBB rAX,Iz
+1e: PUSH DS (i64)
+1f: POP DS (i64)
+# 0x20 - 0x2f
+20: AND Eb,Gb
+21: AND Ev,Gv
+22: AND Gb,Eb
+23: AND Gv,Ev
+24: AND AL,Ib
+25: AND rAx,Iz
+26: SEG=ES (Prefix)
+27: DAA (i64)
+28: SUB Eb,Gb
+29: SUB Ev,Gv
+2a: SUB Gb,Eb
+2b: SUB Gv,Ev
+2c: SUB AL,Ib
+2d: SUB rAX,Iz
+2e: SEG=CS (Prefix)
+2f: DAS (i64)
+# 0x30 - 0x3f
+30: XOR Eb,Gb
+31: XOR Ev,Gv
+32: XOR Gb,Eb
+33: XOR Gv,Ev
+34: XOR AL,Ib
+35: XOR rAX,Iz
+36: SEG=SS (Prefix)
+37: AAA (i64)
+38: CMP Eb,Gb
+39: CMP Ev,Gv
+3a: CMP Gb,Eb
+3b: CMP Gv,Ev
+3c: CMP AL,Ib
+3d: CMP rAX,Iz
+3e: SEG=DS (Prefix)
+3f: AAS (i64)
+# 0x40 - 0x4f
+40: INC eAX (i64) | REX (o64)
+41: INC eCX (i64) | REX.B (o64)
+42: INC eDX (i64) | REX.X (o64)
+43: INC eBX (i64) | REX.XB (o64)
+44: INC eSP (i64) | REX.R (o64)
+45: INC eBP (i64) | REX.RB (o64)
+46: INC eSI (i64) | REX.RX (o64)
+47: INC eDI (i64) | REX.RXB (o64)
+48: DEC eAX (i64) | REX.W (o64)
+49: DEC eCX (i64) | REX.WB (o64)
+4a: DEC eDX (i64) | REX.WX (o64)
+4b: DEC eBX (i64) | REX.WXB (o64)
+4c: DEC eSP (i64) | REX.WR (o64)
+4d: DEC eBP (i64) | REX.WRB (o64)
+4e: DEC eSI (i64) | REX.WRX (o64)
+4f: DEC eDI (i64) | REX.WRXB (o64)
+# 0x50 - 0x5f
+50: PUSH rAX/r8 (d64)
+51: PUSH rCX/r9 (d64)
+52: PUSH rDX/r10 (d64)
+53: PUSH rBX/r11 (d64)
+54: PUSH rSP/r12 (d64)
+55: PUSH rBP/r13 (d64)
+56: PUSH rSI/r14 (d64)
+57: PUSH rDI/r15 (d64)
+58: POP rAX/r8 (d64)
+59: POP rCX/r9 (d64)
+5a: POP rDX/r10 (d64)
+5b: POP rBX/r11 (d64)
+5c: POP rSP/r12 (d64)
+5d: POP rBP/r13 (d64)
+5e: POP rSI/r14 (d64)
+5f: POP rDI/r15 (d64)
+# 0x60 - 0x6f
+60: PUSHA/PUSHAD (i64)
+61: POPA/POPAD (i64)
+62: BOUND Gv,Ma (i64)
+63: ARPL Ew,Gw (i64) | MOVSXD Gv,Ev (o64)
+64: SEG=FS (Prefix)
+65: SEG=GS (Prefix)
+66: Operand-Size (Prefix)
+67: Address-Size (Prefix)
+68: PUSH Iz (d64)
+69: IMUL Gv,Ev,Iz
+6a: PUSH Ib (d64)
+6b: IMUL Gv,Ev,Ib
+6c: INS/INSB Yb,DX
+6d: INS/INSW/INSD Yz,DX
+6e: OUTS/OUTSB DX,Xb
+6f: OUTS/OUTSW/OUTSD DX,Xz
+# 0x70 - 0x7f
+70: JO Jb
+71: JNO Jb
+72: JB/JNAE/JC Jb
+73: JNB/JAE/JNC Jb
+74: JZ/JE Jb
+75: JNZ/JNE Jb
+76: JBE/JNA Jb
+77: JNBE/JA Jb
+78: JS Jb
+79: JNS Jb
+7a: JP/JPE Jb
+7b: JNP/JPO Jb
+7c: JL/JNGE Jb
+7d: JNL/JGE Jb
+7e: JLE/JNG Jb
+7f: JNLE/JG Jb
+# 0x80 - 0x8f
+80: Grp1 Eb,Ib (1A)
+81: Grp1 Ev,Iz (1A)
+82: Grp1 Eb,Ib (1A),(i64)
+83: Grp1 Ev,Ib (1A)
+84: TEST Eb,Gb
+85: TEST Ev,Gv
+86: XCHG Eb,Gb
+87: XCHG Ev,Gv
+88: MOV Eb,Gb
+89: MOV Ev,Gv
+8a: MOV Gb,Eb
+8b: MOV Gv,Ev
+8c: MOV Ev,Sw
+8d: LEA Gv,M
+8e: MOV Sw,Ew
+8f: Grp1A (1A) | POP Ev (d64)
+# 0x90 - 0x9f
+90: NOP | PAUSE (F3) | XCHG r8,rAX
+91: XCHG rCX/r9,rAX
+92: XCHG rDX/r10,rAX
+93: XCHG rBX/r11,rAX
+94: XCHG rSP/r12,rAX
+95: XCHG rBP/r13,rAX
+96: XCHG rSI/r14,rAX
+97: XCHG rDI/r15,rAX
+98: CBW/CWDE/CDQE
+99: CWD/CDQ/CQO
+9a: CALLF Ap (i64)
+9b: FWAIT/WAIT
+9c: PUSHF/D/Q Fv (d64)
+9d: POPF/D/Q Fv (d64)
+9e: SAHF
+9f: LAHF
+# 0xa0 - 0xaf
+a0: MOV AL,Ob
+a1: MOV rAX,Ov
+a2: MOV Ob,AL
+a3: MOV Ov,rAX
+a4: MOVS/B Xb,Yb
+a5: MOVS/W/D/Q Xv,Yv
+a6: CMPS/B Xb,Yb
+a7: CMPS/W/D Xv,Yv
+a8: TEST AL,Ib
+a9: TEST rAX,Iz
+aa: STOS/B Yb,AL
+ab: STOS/W/D/Q Yv,rAX
+ac: LODS/B AL,Xb
+ad: LODS/W/D/Q rAX,Xv
+ae: SCAS/B AL,Yb
+af: SCAS/W/D/Q rAX,Xv
+# 0xb0 - 0xbf
+b0: MOV AL/R8L,Ib
+b1: MOV CL/R9L,Ib
+b2: MOV DL/R10L,Ib
+b3: MOV BL/R11L,Ib
+b4: MOV AH/R12L,Ib
+b5: MOV CH/R13L,Ib
+b6: MOV DH/R14L,Ib
+b7: MOV BH/R15L,Ib
+b8: MOV rAX/r8,Iv
+b9: MOV rCX/r9,Iv
+ba: MOV rDX/r10,Iv
+bb: MOV rBX/r11,Iv
+bc: MOV rSP/r12,Iv
+bd: MOV rBP/r13,Iv
+be: MOV rSI/r14,Iv
+bf: MOV rDI/r15,Iv
+# 0xc0 - 0xcf
+c0: Grp2 Eb,Ib (1A)
+c1: Grp2 Ev,Ib (1A)
+c2: RETN Iw (f64)
+c3: RETN
+c4: LES Gz,Mp (i64) | 3bytes-VEX (Prefix)
+c5: LDS Gz,Mp (i64) | 2bytes-VEX (Prefix)
+c6: Grp11 Eb,Ib (1A)
+c7: Grp11 Ev,Iz (1A)
+c8: ENTER Iw,Ib
+c9: LEAVE (d64)
+ca: RETF Iw
+cb: RETF
+cc: INT3
+cd: INT Ib
+ce: INTO (i64)
+cf: IRET/D/Q
+# 0xd0 - 0xdf
+d0: Grp2 Eb,1 (1A)
+d1: Grp2 Ev,1 (1A)
+d2: Grp2 Eb,CL (1A)
+d3: Grp2 Ev,CL (1A)
+d4: AAM Ib (i64)
+d5: AAD Ib (i64)
+d6:
+d7: XLAT/XLATB
+d8: ESC
+d9: ESC
+da: ESC
+db: ESC
+dc: ESC
+dd: ESC
+de: ESC
+df: ESC
+# 0xe0 - 0xef
+e0: LOOPNE/LOOPNZ Jb (f64)
+e1: LOOPE/LOOPZ Jb (f64)
+e2: LOOP Jb (f64)
+e3: JrCXZ Jb (f64)
+e4: IN AL,Ib
+e5: IN eAX,Ib
+e6: OUT Ib,AL
+e7: OUT Ib,eAX
+e8: CALL Jz (f64)
+e9: JMP-near Jz (f64)
+ea: JMP-far Ap (i64)
+eb: JMP-short Jb (f64)
+ec: IN AL,DX
+ed: IN eAX,DX
+ee: OUT DX,AL
+ef: OUT DX,eAX
+# 0xf0 - 0xff
+f0: LOCK (Prefix)
+f1:
+f2: REPNE (Prefix)
+f3: REP/REPE (Prefix)
+f4: HLT
+f5: CMC
+f6: Grp3_1 Eb (1A)
+f7: Grp3_2 Ev (1A)
+f8: CLC
+f9: STC
+fa: CLI
+fb: STI
+fc: CLD
+fd: STD
+fe: Grp4 (1A)
+ff: Grp5 (1A)
+EndTable
+
+Table: 2-byte opcode (0x0f)
+Referrer: 2-byte escape
+AVXcode: 1
+# 0x0f 0x00-0x0f
+00: Grp6 (1A)
+01: Grp7 (1A)
+02: LAR Gv,Ew
+03: LSL Gv,Ew
+04:
+05: SYSCALL (o64)
+06: CLTS
+07: SYSRET (o64)
+08: INVD
+09: WBINVD
+0a:
+0b: UD2 (1B)
+0c:
+0d: NOP Ev | GrpP
+0e: FEMMS
+# 3DNow! uses the last imm byte as opcode extension.
+0f: 3DNow! Pq,Qq,Ib
+# 0x0f 0x10-0x1f
+10: movups Vps,Wps (VEX) | movss Vss,Wss (F3),(VEX),(o128) | movupd Vpd,Wpd (66),(VEX) | movsd Vsd,Wsd (F2),(VEX),(o128)
+11: movups Wps,Vps (VEX) | movss Wss,Vss (F3),(VEX),(o128) | movupd Wpd,Vpd (66),(VEX) | movsd Wsd,Vsd (F2),(VEX),(o128)
+12: movlps Vq,Mq (VEX),(o128) | movlpd Vq,Mq (66),(VEX),(o128) | movhlps Vq,Uq (VEX),(o128) | movddup Vq,Wq (F2),(VEX) | movsldup Vq,Wq (F3),(VEX)
+13: mpvlps Mq,Vq (VEX),(o128) | movlpd Mq,Vq (66),(VEX),(o128)
+14: unpcklps Vps,Wq (VEX) | unpcklpd Vpd,Wq (66),(VEX)
+15: unpckhps Vps,Wq (VEX) | unpckhpd Vpd,Wq (66),(VEX)
+16: movhps Vq,Mq (VEX),(o128) | movhpd Vq,Mq (66),(VEX),(o128) | movlsps Vq,Uq (VEX),(o128) | movshdup Vq,Wq (F3),(VEX)
+17: movhps Mq,Vq (VEX),(o128) | movhpd Mq,Vq (66),(VEX),(o128)
+18: Grp16 (1A)
+19:
+1a:
+1b:
+1c:
+1d:
+1e:
+1f: NOP Ev
+# 0x0f 0x20-0x2f
+20: MOV Rd,Cd
+21: MOV Rd,Dd
+22: MOV Cd,Rd
+23: MOV Dd,Rd
+24:
+25:
+26:
+27:
+28: movaps Vps,Wps (VEX) | movapd Vpd,Wpd (66),(VEX)
+29: movaps Wps,Vps (VEX) | movapd Wpd,Vpd (66),(VEX)
+2a: cvtpi2ps Vps,Qpi | cvtsi2ss Vss,Ed/q (F3),(VEX),(o128) | cvtpi2pd Vpd,Qpi (66) | cvtsi2sd Vsd,Ed/q (F2),(VEX),(o128)
+2b: movntps Mps,Vps (VEX) | movntpd Mpd,Vpd (66),(VEX)
+2c: cvttps2pi Ppi,Wps | cvttss2si Gd/q,Wss (F3),(VEX),(o128) | cvttpd2pi Ppi,Wpd (66) | cvttsd2si Gd/q,Wsd (F2),(VEX),(o128)
+2d: cvtps2pi Ppi,Wps | cvtss2si Gd/q,Wss (F3),(VEX),(o128) | cvtpd2pi Qpi,Wpd (66) | cvtsd2si Gd/q,Wsd (F2),(VEX),(o128)
+2e: ucomiss Vss,Wss (VEX),(o128) | ucomisd Vsd,Wsd (66),(VEX),(o128)
+2f: comiss Vss,Wss (VEX),(o128) | comisd Vsd,Wsd (66),(VEX),(o128)
+# 0x0f 0x30-0x3f
+30: WRMSR
+31: RDTSC
+32: RDMSR
+33: RDPMC
+34: SYSENTER
+35: SYSEXIT
+36:
+37: GETSEC
+38: escape # 3-byte escape 1
+39:
+3a: escape # 3-byte escape 2
+3b:
+3c:
+3d:
+3e:
+3f:
+# 0x0f 0x40-0x4f
+40: CMOVO Gv,Ev
+41: CMOVNO Gv,Ev
+42: CMOVB/C/NAE Gv,Ev
+43: CMOVAE/NB/NC Gv,Ev
+44: CMOVE/Z Gv,Ev
+45: CMOVNE/NZ Gv,Ev
+46: CMOVBE/NA Gv,Ev
+47: CMOVA/NBE Gv,Ev
+48: CMOVS Gv,Ev
+49: CMOVNS Gv,Ev
+4a: CMOVP/PE Gv,Ev
+4b: CMOVNP/PO Gv,Ev
+4c: CMOVL/NGE Gv,Ev
+4d: CMOVNL/GE Gv,Ev
+4e: CMOVLE/NG Gv,Ev
+4f: CMOVNLE/G Gv,Ev
+# 0x0f 0x50-0x5f
+50: movmskps Gd/q,Ups (VEX) | movmskpd Gd/q,Upd (66),(VEX)
+51: sqrtps Vps,Wps (VEX) | sqrtss Vss,Wss (F3),(VEX),(o128) | sqrtpd Vpd,Wpd (66),(VEX) | sqrtsd Vsd,Wsd (F2),(VEX),(o128)
+52: rsqrtps Vps,Wps (VEX) | rsqrtss Vss,Wss (F3),(VEX),(o128)
+53: rcpps Vps,Wps (VEX) | rcpss Vss,Wss (F3),(VEX),(o128)
+54: andps Vps,Wps (VEX) | andpd Vpd,Wpd (66),(VEX)
+55: andnps Vps,Wps (VEX) | andnpd Vpd,Wpd (66),(VEX)
+56: orps Vps,Wps (VEX) | orpd Vpd,Wpd (66),(VEX)
+57: xorps Vps,Wps (VEX) | xorpd Vpd,Wpd (66),(VEX)
+58: addps Vps,Wps (VEX) | addss Vss,Wss (F3),(VEX),(o128) | addpd Vpd,Wpd (66),(VEX) | addsd Vsd,Wsd (F2),(VEX),(o128)
+59: mulps Vps,Wps (VEX) | mulss Vss,Wss (F3),(VEX),(o128) | mulpd Vpd,Wpd (66),(VEX) | mulsd Vsd,Wsd (F2),(VEX),(o128)
+5a: cvtps2pd Vpd,Wps (VEX) | cvtss2sd Vsd,Wss (F3),(VEX),(o128) | cvtpd2ps Vps,Wpd (66),(VEX) | cvtsd2ss Vsd,Wsd (F2),(VEX),(o128)
+5b: cvtdq2ps Vps,Wdq (VEX) | cvtps2dq Vdq,Wps (66),(VEX) | cvttps2dq Vdq,Wps (F3),(VEX)
+5c: subps Vps,Wps (VEX) | subss Vss,Wss (F3),(VEX),(o128) | subpd Vpd,Wpd (66),(VEX) | subsd Vsd,Wsd (F2),(VEX),(o128)
+5d: minps Vps,Wps (VEX) | minss Vss,Wss (F3),(VEX),(o128) | minpd Vpd,Wpd (66),(VEX) | minsd Vsd,Wsd (F2),(VEX),(o128)
+5e: divps Vps,Wps (VEX) | divss Vss,Wss (F3),(VEX),(o128) | divpd Vpd,Wpd (66),(VEX) | divsd Vsd,Wsd (F2),(VEX),(o128)
+5f: maxps Vps,Wps (VEX) | maxss Vss,Wss (F3),(VEX),(o128) | maxpd Vpd,Wpd (66),(VEX) | maxsd Vsd,Wsd (F2),(VEX),(o128)
+# 0x0f 0x60-0x6f
+60: punpcklbw Pq,Qd | punpcklbw Vdq,Wdq (66),(VEX),(o128)
+61: punpcklwd Pq,Qd | punpcklwd Vdq,Wdq (66),(VEX),(o128)
+62: punpckldq Pq,Qd | punpckldq Vdq,Wdq (66),(VEX),(o128)
+63: packsswb Pq,Qq | packsswb Vdq,Wdq (66),(VEX),(o128)
+64: pcmpgtb Pq,Qq | pcmpgtb Vdq,Wdq (66),(VEX),(o128)
+65: pcmpgtw Pq,Qq | pcmpgtw Vdq,Wdq (66),(VEX),(o128)
+66: pcmpgtd Pq,Qq | pcmpgtd Vdq,Wdq (66),(VEX),(o128)
+67: packuswb Pq,Qq | packuswb Vdq,Wdq (66),(VEX),(o128)
+68: punpckhbw Pq,Qd | punpckhbw Vdq,Wdq (66),(VEX),(o128)
+69: punpckhwd Pq,Qd | punpckhwd Vdq,Wdq (66),(VEX),(o128)
+6a: punpckhdq Pq,Qd | punpckhdq Vdq,Wdq (66),(VEX),(o128)
+6b: packssdw Pq,Qd | packssdw Vdq,Wdq (66),(VEX),(o128)
+6c: punpcklqdq Vdq,Wdq (66),(VEX),(o128)
+6d: punpckhqdq Vdq,Wdq (66),(VEX),(o128)
+6e: movd/q/ Pd,Ed/q | movd/q Vdq,Ed/q (66),(VEX),(o128)
+6f: movq Pq,Qq | movdqa Vdq,Wdq (66),(VEX) | movdqu Vdq,Wdq (F3),(VEX)
+# 0x0f 0x70-0x7f
+70: pshufw Pq,Qq,Ib | pshufd Vdq,Wdq,Ib (66),(VEX),(o128) | pshufhw Vdq,Wdq,Ib (F3),(VEX),(o128) | pshuflw VdqWdq,Ib (F2),(VEX),(o128)
+71: Grp12 (1A)
+72: Grp13 (1A)
+73: Grp14 (1A)
+74: pcmpeqb Pq,Qq | pcmpeqb Vdq,Wdq (66),(VEX),(o128)
+75: pcmpeqw Pq,Qq | pcmpeqw Vdq,Wdq (66),(VEX),(o128)
+76: pcmpeqd Pq,Qq | pcmpeqd Vdq,Wdq (66),(VEX),(o128)
+77: emms/vzeroupper/vzeroall (VEX)
+78: VMREAD Ed/q,Gd/q
+79: VMWRITE Gd/q,Ed/q
+7a:
+7b:
+7c: haddps Vps,Wps (F2),(VEX) | haddpd Vpd,Wpd (66),(VEX)
+7d: hsubps Vps,Wps (F2),(VEX) | hsubpd Vpd,Wpd (66),(VEX)
+7e: movd/q Ed/q,Pd | movd/q Ed/q,Vdq (66),(VEX),(o128) | movq Vq,Wq (F3),(VEX),(o128)
+7f: movq Qq,Pq | movdqa Wdq,Vdq (66),(VEX) | movdqu Wdq,Vdq (F3),(VEX)
+# 0x0f 0x80-0x8f
+80: JO Jz (f64)
+81: JNO Jz (f64)
+82: JB/JNAE/JC Jz (f64)
+83: JNB/JAE/JNC Jz (f64)
+84: JZ/JE Jz (f64)
+85: JNZ/JNE Jz (f64)
+86: JBE/JNA Jz (f64)
+87: JNBE/JA Jz (f64)
+88: JS Jz (f64)
+89: JNS Jz (f64)
+8a: JP/JPE Jz (f64)
+8b: JNP/JPO Jz (f64)
+8c: JL/JNGE Jz (f64)
+8d: JNL/JGE Jz (f64)
+8e: JLE/JNG Jz (f64)
+8f: JNLE/JG Jz (f64)
+# 0x0f 0x90-0x9f
+90: SETO Eb
+91: SETNO Eb
+92: SETB/C/NAE Eb
+93: SETAE/NB/NC Eb
+94: SETE/Z Eb
+95: SETNE/NZ Eb
+96: SETBE/NA Eb
+97: SETA/NBE Eb
+98: SETS Eb
+99: SETNS Eb
+9a: SETP/PE Eb
+9b: SETNP/PO Eb
+9c: SETL/NGE Eb
+9d: SETNL/GE Eb
+9e: SETLE/NG Eb
+9f: SETNLE/G Eb
+# 0x0f 0xa0-0xaf
+a0: PUSH FS (d64)
+a1: POP FS (d64)
+a2: CPUID
+a3: BT Ev,Gv
+a4: SHLD Ev,Gv,Ib
+a5: SHLD Ev,Gv,CL
+a6: GrpPDLK
+a7: GrpRNG
+a8: PUSH GS (d64)
+a9: POP GS (d64)
+aa: RSM
+ab: BTS Ev,Gv
+ac: SHRD Ev,Gv,Ib
+ad: SHRD Ev,Gv,CL
+ae: Grp15 (1A),(1C)
+af: IMUL Gv,Ev
+# 0x0f 0xb0-0xbf
+b0: CMPXCHG Eb,Gb
+b1: CMPXCHG Ev,Gv
+b2: LSS Gv,Mp
+b3: BTR Ev,Gv
+b4: LFS Gv,Mp
+b5: LGS Gv,Mp
+b6: MOVZX Gv,Eb
+b7: MOVZX Gv,Ew
+b8: JMPE | POPCNT Gv,Ev (F3)
+b9: Grp10 (1A)
+ba: Grp8 Ev,Ib (1A)
+bb: BTC Ev,Gv
+bc: BSF Gv,Ev
+bd: BSR Gv,Ev
+be: MOVSX Gv,Eb
+bf: MOVSX Gv,Ew
+# 0x0f 0xc0-0xcf
+c0: XADD Eb,Gb
+c1: XADD Ev,Gv
+c2: cmpps Vps,Wps,Ib (VEX) | cmpss Vss,Wss,Ib (F3),(VEX),(o128) | cmppd Vpd,Wpd,Ib (66),(VEX) | cmpsd Vsd,Wsd,Ib (F2),(VEX)
+c3: movnti Md/q,Gd/q
+c4: pinsrw Pq,Rd/q/Mw,Ib | pinsrw Vdq,Rd/q/Mw,Ib (66),(VEX),(o128)
+c5: pextrw Gd,Nq,Ib | pextrw Gd,Udq,Ib (66),(VEX),(o128)
+c6: shufps Vps,Wps,Ib (VEX) | shufpd Vpd,Wpd,Ib (66),(VEX)
+c7: Grp9 (1A)
+c8: BSWAP RAX/EAX/R8/R8D
+c9: BSWAP RCX/ECX/R9/R9D
+ca: BSWAP RDX/EDX/R10/R10D
+cb: BSWAP RBX/EBX/R11/R11D
+cc: BSWAP RSP/ESP/R12/R12D
+cd: BSWAP RBP/EBP/R13/R13D
+ce: BSWAP RSI/ESI/R14/R14D
+cf: BSWAP RDI/EDI/R15/R15D
+# 0x0f 0xd0-0xdf
+d0: addsubps Vps,Wps (F2),(VEX) | addsubpd Vpd,Wpd (66),(VEX)
+d1: psrlw Pq,Qq | psrlw Vdq,Wdq (66),(VEX),(o128)
+d2: psrld Pq,Qq | psrld Vdq,Wdq (66),(VEX),(o128)
+d3: psrlq Pq,Qq | psrlq Vdq,Wdq (66),(VEX),(o128)
+d4: paddq Pq,Qq | paddq Vdq,Wdq (66),(VEX),(o128)
+d5: pmullw Pq,Qq | pmullw Vdq,Wdq (66),(VEX),(o128)
+d6: movq Wq,Vq (66),(VEX),(o128) | movq2dq Vdq,Nq (F3) | movdq2q Pq,Uq (F2)
+d7: pmovmskb Gd,Nq | pmovmskb Gd,Udq (66),(VEX),(o128)
+d8: psubusb Pq,Qq | psubusb Vdq,Wdq (66),(VEX),(o128)
+d9: psubusw Pq,Qq | psubusw Vdq,Wdq (66),(VEX),(o128)
+da: pminub Pq,Qq | pminub Vdq,Wdq (66),(VEX),(o128)
+db: pand Pq,Qq | pand Vdq,Wdq (66),(VEX),(o128)
+dc: paddusb Pq,Qq | paddusb Vdq,Wdq (66),(VEX),(o128)
+dd: paddusw Pq,Qq | paddusw Vdq,Wdq (66),(VEX),(o128)
+de: pmaxub Pq,Qq | pmaxub Vdq,Wdq (66),(VEX),(o128)
+df: pandn Pq,Qq | pandn Vdq,Wdq (66),(VEX),(o128)
+# 0x0f 0xe0-0xef
+e0: pavgb Pq,Qq | pavgb Vdq,Wdq (66),(VEX),(o128)
+e1: psraw Pq,Qq | psraw Vdq,Wdq (66),(VEX),(o128)
+e2: psrad Pq,Qq | psrad Vdq,Wdq (66),(VEX),(o128)
+e3: pavgw Pq,Qq | pavgw Vdq,Wdq (66),(VEX),(o128)
+e4: pmulhuw Pq,Qq | pmulhuw Vdq,Wdq (66),(VEX),(o128)
+e5: pmulhw Pq,Qq | pmulhw Vdq,Wdq (66),(VEX),(o128)
+e6: cvtpd2dq Vdq,Wpd (F2),(VEX) | cvttpd2dq Vdq,Wpd (66),(VEX) | cvtdq2pd Vpd,Wdq (F3),(VEX)
+e7: movntq Mq,Pq | movntdq Mdq,Vdq (66),(VEX)
+e8: psubsb Pq,Qq | psubsb Vdq,Wdq (66),(VEX),(o128)
+e9: psubsw Pq,Qq | psubsw Vdq,Wdq (66),(VEX),(o128)
+ea: pminsw Pq,Qq | pminsw Vdq,Wdq (66),(VEX),(o128)
+eb: por Pq,Qq | por Vdq,Wdq (66),(VEX),(o128)
+ec: paddsb Pq,Qq | paddsb Vdq,Wdq (66),(VEX),(o128)
+ed: paddsw Pq,Qq | paddsw Vdq,Wdq (66),(VEX),(o128)
+ee: pmaxsw Pq,Qq | pmaxsw Vdq,Wdq (66),(VEX),(o128)
+ef: pxor Pq,Qq | pxor Vdq,Wdq (66),(VEX),(o128)
+# 0x0f 0xf0-0xff
+f0: lddqu Vdq,Mdq (F2),(VEX)
+f1: psllw Pq,Qq | psllw Vdq,Wdq (66),(VEX),(o128)
+f2: pslld Pq,Qq | pslld Vdq,Wdq (66),(VEX),(o128)
+f3: psllq Pq,Qq | psllq Vdq,Wdq (66),(VEX),(o128)
+f4: pmuludq Pq,Qq | pmuludq Vdq,Wdq (66),(VEX),(o128)
+f5: pmaddwd Pq,Qq | pmaddwd Vdq,Wdq (66),(VEX),(o128)
+f6: psadbw Pq,Qq | psadbw Vdq,Wdq (66),(VEX),(o128)
+f7: maskmovq Pq,Nq | maskmovdqu Vdq,Udq (66),(VEX),(o128)
+f8: psubb Pq,Qq | psubb Vdq,Wdq (66),(VEX),(o128)
+f9: psubw Pq,Qq | psubw Vdq,Wdq (66),(VEX),(o128)
+fa: psubd Pq,Qq | psubd Vdq,Wdq (66),(VEX),(o128)
+fb: psubq Pq,Qq | psubq Vdq,Wdq (66),(VEX),(o128)
+fc: paddb Pq,Qq | paddb Vdq,Wdq (66),(VEX),(o128)
+fd: paddw Pq,Qq | paddw Vdq,Wdq (66),(VEX),(o128)
+fe: paddd Pq,Qq | paddd Vdq,Wdq (66),(VEX),(o128)
+ff:
+EndTable
+
+Table: 3-byte opcode 1 (0x0f 0x38)
+Referrer: 3-byte escape 1
+AVXcode: 2
+# 0x0f 0x38 0x00-0x0f
+00: pshufb Pq,Qq | pshufb Vdq,Wdq (66),(VEX),(o128)
+01: phaddw Pq,Qq | phaddw Vdq,Wdq (66),(VEX),(o128)
+02: phaddd Pq,Qq | phaddd Vdq,Wdq (66),(VEX),(o128)
+03: phaddsw Pq,Qq | phaddsw Vdq,Wdq (66),(VEX),(o128)
+04: pmaddubsw Pq,Qq | pmaddubsw Vdq,Wdq (66),(VEX),(o128)
+05: phsubw Pq,Qq | phsubw Vdq,Wdq (66),(VEX),(o128)
+06: phsubd Pq,Qq | phsubd Vdq,Wdq (66),(VEX),(o128)
+07: phsubsw Pq,Qq | phsubsw Vdq,Wdq (66),(VEX),(o128)
+08: psignb Pq,Qq | psignb Vdq,Wdq (66),(VEX),(o128)
+09: psignw Pq,Qq | psignw Vdq,Wdq (66),(VEX),(o128)
+0a: psignd Pq,Qq | psignd Vdq,Wdq (66),(VEX),(o128)
+0b: pmulhrsw Pq,Qq | pmulhrsw Vdq,Wdq (66),(VEX),(o128)
+0c: Vpermilps /r (66),(oVEX)
+0d: Vpermilpd /r (66),(oVEX)
+0e: vtestps /r (66),(oVEX)
+0f: vtestpd /r (66),(oVEX)
+# 0x0f 0x38 0x10-0x1f
+10: pblendvb Vdq,Wdq (66)
+11:
+12:
+13:
+14: blendvps Vdq,Wdq (66)
+15: blendvpd Vdq,Wdq (66)
+16:
+17: ptest Vdq,Wdq (66),(VEX)
+18: vbroadcastss /r (66),(oVEX)
+19: vbroadcastsd /r (66),(oVEX),(o256)
+1a: vbroadcastf128 /r (66),(oVEX),(o256)
+1b:
+1c: pabsb Pq,Qq | pabsb Vdq,Wdq (66),(VEX),(o128)
+1d: pabsw Pq,Qq | pabsw Vdq,Wdq (66),(VEX),(o128)
+1e: pabsd Pq,Qq | pabsd Vdq,Wdq (66),(VEX),(o128)
+1f:
+# 0x0f 0x38 0x20-0x2f
+20: pmovsxbw Vdq,Udq/Mq (66),(VEX),(o128)
+21: pmovsxbd Vdq,Udq/Md (66),(VEX),(o128)
+22: pmovsxbq Vdq,Udq/Mw (66),(VEX),(o128)
+23: pmovsxwd Vdq,Udq/Mq (66),(VEX),(o128)
+24: pmovsxwq Vdq,Udq/Md (66),(VEX),(o128)
+25: pmovsxdq Vdq,Udq/Mq (66),(VEX),(o128)
+26:
+27:
+28: pmuldq Vdq,Wdq (66),(VEX),(o128)
+29: pcmpeqq Vdq,Wdq (66),(VEX),(o128)
+2a: movntdqa Vdq,Mdq (66),(VEX),(o128)
+2b: packusdw Vdq,Wdq (66),(VEX),(o128)
+2c: vmaskmovps(ld) /r (66),(oVEX)
+2d: vmaskmovpd(ld) /r (66),(oVEX)
+2e: vmaskmovps(st) /r (66),(oVEX)
+2f: vmaskmovpd(st) /r (66),(oVEX)
+# 0x0f 0x38 0x30-0x3f
+30: pmovzxbw Vdq,Udq/Mq (66),(VEX),(o128)
+31: pmovzxbd Vdq,Udq/Md (66),(VEX),(o128)
+32: pmovzxbq Vdq,Udq/Mw (66),(VEX),(o128)
+33: pmovzxwd Vdq,Udq/Mq (66),(VEX),(o128)
+34: pmovzxwq Vdq,Udq/Md (66),(VEX),(o128)
+35: pmovzxdq Vdq,Udq/Mq (66),(VEX),(o128)
+36:
+37: pcmpgtq Vdq,Wdq (66),(VEX),(o128)
+38: pminsb Vdq,Wdq (66),(VEX),(o128)
+39: pminsd Vdq,Wdq (66),(VEX),(o128)
+3a: pminuw Vdq,Wdq (66),(VEX),(o128)
+3b: pminud Vdq,Wdq (66),(VEX),(o128)
+3c: pmaxsb Vdq,Wdq (66),(VEX),(o128)
+3d: pmaxsd Vdq,Wdq (66),(VEX),(o128)
+3e: pmaxuw Vdq,Wdq (66),(VEX),(o128)
+3f: pmaxud Vdq,Wdq (66),(VEX),(o128)
+# 0x0f 0x38 0x40-0x8f
+40: pmulld Vdq,Wdq (66),(VEX),(o128)
+41: phminposuw Vdq,Wdq (66),(VEX),(o128)
+80: INVEPT Gd/q,Mdq (66)
+81: INVPID Gd/q,Mdq (66)
+# 0x0f 0x38 0x90-0xbf (FMA)
+96: vfmaddsub132pd/ps /r (66),(VEX)
+97: vfmsubadd132pd/ps /r (66),(VEX)
+98: vfmadd132pd/ps /r (66),(VEX)
+99: vfmadd132sd/ss /r (66),(VEX),(o128)
+9a: vfmsub132pd/ps /r (66),(VEX)
+9b: vfmsub132sd/ss /r (66),(VEX),(o128)
+9c: vfnmadd132pd/ps /r (66),(VEX)
+9d: vfnmadd132sd/ss /r (66),(VEX),(o128)
+9e: vfnmsub132pd/ps /r (66),(VEX)
+9f: vfnmsub132sd/ss /r (66),(VEX),(o128)
+a6: vfmaddsub213pd/ps /r (66),(VEX)
+a7: vfmsubadd213pd/ps /r (66),(VEX)
+a8: vfmadd213pd/ps /r (66),(VEX)
+a9: vfmadd213sd/ss /r (66),(VEX),(o128)
+aa: vfmsub213pd/ps /r (66),(VEX)
+ab: vfmsub213sd/ss /r (66),(VEX),(o128)
+ac: vfnmadd213pd/ps /r (66),(VEX)
+ad: vfnmadd213sd/ss /r (66),(VEX),(o128)
+ae: vfnmsub213pd/ps /r (66),(VEX)
+af: vfnmsub213sd/ss /r (66),(VEX),(o128)
+b6: vfmaddsub231pd/ps /r (66),(VEX)
+b7: vfmsubadd231pd/ps /r (66),(VEX)
+b8: vfmadd231pd/ps /r (66),(VEX)
+b9: vfmadd231sd/ss /r (66),(VEX),(o128)
+ba: vfmsub231pd/ps /r (66),(VEX)
+bb: vfmsub231sd/ss /r (66),(VEX),(o128)
+bc: vfnmadd231pd/ps /r (66),(VEX)
+bd: vfnmadd231sd/ss /r (66),(VEX),(o128)
+be: vfnmsub231pd/ps /r (66),(VEX)
+bf: vfnmsub231sd/ss /r (66),(VEX),(o128)
+# 0x0f 0x38 0xc0-0xff
+db: aesimc Vdq,Wdq (66),(VEX),(o128)
+dc: aesenc Vdq,Wdq (66),(VEX),(o128)
+dd: aesenclast Vdq,Wdq (66),(VEX),(o128)
+de: aesdec Vdq,Wdq (66),(VEX),(o128)
+df: aesdeclast Vdq,Wdq (66),(VEX),(o128)
+f0: MOVBE Gv,Mv | CRC32 Gd,Eb (F2)
+f1: MOVBE Mv,Gv | CRC32 Gd,Ev (F2)
+EndTable
+
+Table: 3-byte opcode 2 (0x0f 0x3a)
+Referrer: 3-byte escape 2
+AVXcode: 3
+# 0x0f 0x3a 0x00-0xff
+04: vpermilps /r,Ib (66),(oVEX)
+05: vpermilpd /r,Ib (66),(oVEX)
+06: vperm2f128 /r,Ib (66),(oVEX),(o256)
+08: roundps Vdq,Wdq,Ib (66),(VEX)
+09: roundpd Vdq,Wdq,Ib (66),(VEX)
+0a: roundss Vss,Wss,Ib (66),(VEX),(o128)
+0b: roundsd Vsd,Wsd,Ib (66),(VEX),(o128)
+0c: blendps Vdq,Wdq,Ib (66),(VEX)
+0d: blendpd Vdq,Wdq,Ib (66),(VEX)
+0e: pblendw Vdq,Wdq,Ib (66),(VEX),(o128)
+0f: palignr Pq,Qq,Ib | palignr Vdq,Wdq,Ib (66),(VEX),(o128)
+14: pextrb Rd/Mb,Vdq,Ib (66),(VEX),(o128)
+15: pextrw Rd/Mw,Vdq,Ib (66),(VEX),(o128)
+16: pextrd/pextrq Ed/q,Vdq,Ib (66),(VEX),(o128)
+17: extractps Ed,Vdq,Ib (66),(VEX),(o128)
+18: vinsertf128 /r,Ib (66),(oVEX),(o256)
+19: vextractf128 /r,Ib (66),(oVEX),(o256)
+20: pinsrb Vdq,Rd/q/Mb,Ib (66),(VEX),(o128)
+21: insertps Vdq,Udq/Md,Ib (66),(VEX),(o128)
+22: pinsrd/pinsrq Vdq,Ed/q,Ib (66),(VEX),(o128)
+40: dpps Vdq,Wdq,Ib (66),(VEX)
+41: dppd Vdq,Wdq,Ib (66),(VEX),(o128)
+42: mpsadbw Vdq,Wdq,Ib (66),(VEX),(o128)
+44: pclmulq Vdq,Wdq,Ib (66),(VEX),(o128)
+4a: vblendvps /r,Ib (66),(oVEX)
+4b: vblendvpd /r,Ib (66),(oVEX)
+4c: vpblendvb /r,Ib (66),(oVEX),(o128)
+60: pcmpestrm Vdq,Wdq,Ib (66),(VEX),(o128)
+61: pcmpestri Vdq,Wdq,Ib (66),(VEX),(o128)
+62: pcmpistrm Vdq,Wdq,Ib (66),(VEX),(o128)
+63: pcmpistri Vdq,Wdq,Ib (66),(VEX),(o128)
+df: aeskeygenassist Vdq,Wdq,Ib (66),(VEX),(o128)
+EndTable
+
+GrpTable: Grp1
+0: ADD
+1: OR
+2: ADC
+3: SBB
+4: AND
+5: SUB
+6: XOR
+7: CMP
+EndTable
+
+GrpTable: Grp1A
+0: POP
+EndTable
+
+GrpTable: Grp2
+0: ROL
+1: ROR
+2: RCL
+3: RCR
+4: SHL/SAL
+5: SHR
+6:
+7: SAR
+EndTable
+
+GrpTable: Grp3_1
+0: TEST Eb,Ib
+1:
+2: NOT Eb
+3: NEG Eb
+4: MUL AL,Eb
+5: IMUL AL,Eb
+6: DIV AL,Eb
+7: IDIV AL,Eb
+EndTable
+
+GrpTable: Grp3_2
+0: TEST Ev,Iz
+1:
+2: NOT Ev
+3: NEG Ev
+4: MUL rAX,Ev
+5: IMUL rAX,Ev
+6: DIV rAX,Ev
+7: IDIV rAX,Ev
+EndTable
+
+GrpTable: Grp4
+0: INC Eb
+1: DEC Eb
+EndTable
+
+GrpTable: Grp5
+0: INC Ev
+1: DEC Ev
+2: CALLN Ev (f64)
+3: CALLF Ep
+4: JMPN Ev (f64)
+5: JMPF Ep
+6: PUSH Ev (d64)
+7:
+EndTable
+
+GrpTable: Grp6
+0: SLDT Rv/Mw
+1: STR Rv/Mw
+2: LLDT Ew
+3: LTR Ew
+4: VERR Ew
+5: VERW Ew
+EndTable
+
+GrpTable: Grp7
+0: SGDT Ms | VMCALL (001),(11B) | VMLAUNCH (010),(11B) | VMRESUME (011),(11B) | VMXOFF (100),(11B)
+1: SIDT Ms | MONITOR (000),(11B) | MWAIT (001)
+2: LGDT Ms | XGETBV (000),(11B) | XSETBV (001),(11B)
+3: LIDT Ms
+4: SMSW Mw/Rv
+5:
+6: LMSW Ew
+7: INVLPG Mb | SWAPGS (o64),(000),(11B) | RDTSCP (001),(11B)
+EndTable
+
+GrpTable: Grp8
+4: BT
+5: BTS
+6: BTR
+7: BTC
+EndTable
+
+GrpTable: Grp9
+1: CMPXCHG8B/16B Mq/Mdq
+6: VMPTRLD Mq | VMCLEAR Mq (66) | VMXON Mq (F3)
+7: VMPTRST Mq
+EndTable
+
+GrpTable: Grp10
+EndTable
+
+GrpTable: Grp11
+0: MOV
+EndTable
+
+GrpTable: Grp12
+2: psrlw Nq,Ib (11B) | psrlw Udq,Ib (66),(11B),(VEX),(o128)
+4: psraw Nq,Ib (11B) | psraw Udq,Ib (66),(11B),(VEX),(o128)
+6: psllw Nq,Ib (11B) | psllw Udq,Ib (66),(11B),(VEX),(o128)
+EndTable
+
+GrpTable: Grp13
+2: psrld Nq,Ib (11B) | psrld Udq,Ib (66),(11B),(VEX),(o128)
+4: psrad Nq,Ib (11B) | psrad Udq,Ib (66),(11B),(VEX),(o128)
+6: pslld Nq,Ib (11B) | pslld Udq,Ib (66),(11B),(VEX),(o128)
+EndTable
+
+GrpTable: Grp14
+2: psrlq Nq,Ib (11B) | psrlq Udq,Ib (66),(11B),(VEX),(o128)
+3: psrldq Udq,Ib (66),(11B),(VEX),(o128)
+6: psllq Nq,Ib (11B) | psllq Udq,Ib (66),(11B),(VEX),(o128)
+7: pslldq Udq,Ib (66),(11B),(VEX),(o128)
+EndTable
+
+GrpTable: Grp15
+0: fxsave
+1: fxstor
+2: ldmxcsr (VEX)
+3: stmxcsr (VEX)
+4: XSAVE
+5: XRSTOR | lfence (11B)
+6: mfence (11B)
+7: clflush | sfence (11B)
+EndTable
+
+GrpTable: Grp16
+0: prefetch NTA
+1: prefetch T0
+2: prefetch T1
+3: prefetch T2
+EndTable
+
+# AMD's Prefetch Group
+GrpTable: GrpP
+0: PREFETCH
+1: PREFETCHW
+EndTable
+
+GrpTable: GrpPDLK
+0: MONTMUL
+1: XSHA1
+2: XSHA2
+EndTable
+
+GrpTable: GrpRNG
+0: xstore-rng
+1: xcrypt-ecb
+2: xcrypt-cbc
+4: xcrypt-cfb
+5: xcrypt-ofb
+EndTable
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index f4cee9028cf0b01e11951662b625f63371f627e6..8f4e2ac93928edd82f4b34ac3bdead37eea289d4 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -38,7 +38,8 @@ enum x86_pf_error_code {
* Returns 0 if mmiotrace is disabled, or if the fault is not
* handled by mmiotrace:
*/
-static inline int kmmio_fault(struct pt_regs *regs, unsigned long addr)
+static inline int __kprobes
+kmmio_fault(struct pt_regs *regs, unsigned long addr)
{
if (unlikely(is_kmmio_active()))
if (kmmio_handler(regs, addr) == 1)
@@ -46,7 +47,7 @@ static inline int kmmio_fault(struct pt_regs *regs, unsigned long addr)
return 0;
}
-static inline int notify_page_fault(struct pt_regs *regs)
+static inline int __kprobes notify_page_fault(struct pt_regs *regs)
{
int ret = 0;
@@ -240,7 +241,7 @@ void vmalloc_sync_all(void)
*
* Handle a fault on the vmalloc or module mapping area
*/
-static noinline int vmalloc_fault(unsigned long address)
+static noinline __kprobes int vmalloc_fault(unsigned long address)
{
unsigned long pgd_paddr;
pmd_t *pmd_k;
@@ -357,7 +358,7 @@ void vmalloc_sync_all(void)
*
* This assumes no large pages in there.
*/
-static noinline int vmalloc_fault(unsigned long address)
+static noinline __kprobes int vmalloc_fault(unsigned long address)
{
pgd_t *pgd, *pgd_ref;
pud_t *pud, *pud_ref;
@@ -860,7 +861,7 @@ static int spurious_fault_check(unsigned long error_code, pte_t *pte)
* There are no security implications to leaving a stale TLB when
* increasing the permissions on a page.
*/
-static noinline int
+static noinline __kprobes int
spurious_fault(unsigned long error_code, unsigned long address)
{
pgd_t *pgd;
diff --git a/arch/x86/mm/kmmio.c b/arch/x86/mm/kmmio.c
index 16ccbd77917f22c1693b9b41fcb8dc7485acee39..11a4ad4d62530ff58b7bfa56d086ad69e3fc0bd1 100644
--- a/arch/x86/mm/kmmio.c
+++ b/arch/x86/mm/kmmio.c
@@ -540,8 +540,14 @@ kmmio_die_notifier(struct notifier_block *nb, unsigned long val, void *args)
struct die_args *arg = args;
if (val == DIE_DEBUG && (arg->err & DR_STEP))
- if (post_kmmio_handler(arg->err, arg->regs) == 1)
+ if (post_kmmio_handler(arg->err, arg->regs) == 1) {
+ /*
+ * Reset the BS bit in dr6 (pointed by args->err) to
+ * denote completion of processing
+ */
+ (*(unsigned long *)ERR_PTR(arg->err)) &= ~DR_STEP;
return NOTIFY_STOP;
+ }
return NOTIFY_DONE;
}
diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c
index 8aa85f17667e5034cfd2fae3eecd217c878d0529..0a979f3e5b8a7596aaf7d402cf73b0bb7eace8a9 100644
--- a/arch/x86/power/cpu.c
+++ b/arch/x86/power/cpu.c
@@ -18,6 +18,7 @@
#include
#include
#include
+#include
#ifdef CONFIG_X86_32
static struct saved_context saved_context;
@@ -142,31 +143,6 @@ static void fix_processor_context(void)
#endif
load_TR_desc(); /* This does ltr */
load_LDT(¤t->active_mm->context); /* This does lldt */
-
- /*
- * Now maybe reload the debug registers
- */
- if (current->thread.debugreg7) {
-#ifdef CONFIG_X86_32
- set_debugreg(current->thread.debugreg0, 0);
- set_debugreg(current->thread.debugreg1, 1);
- set_debugreg(current->thread.debugreg2, 2);
- set_debugreg(current->thread.debugreg3, 3);
- /* no 4 and 5 */
- set_debugreg(current->thread.debugreg6, 6);
- set_debugreg(current->thread.debugreg7, 7);
-#else
- /* CONFIG_X86_64 */
- loaddebug(¤t->thread, 0);
- loaddebug(¤t->thread, 1);
- loaddebug(¤t->thread, 2);
- loaddebug(¤t->thread, 3);
- /* no 4 and 5 */
- loaddebug(¤t->thread, 6);
- loaddebug(¤t->thread, 7);
-#endif
- }
-
}
/**
diff --git a/arch/x86/tools/Makefile b/arch/x86/tools/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..f82082677337e8fc769ebdef16e747e4b6ce00ba
--- /dev/null
+++ b/arch/x86/tools/Makefile
@@ -0,0 +1,31 @@
+PHONY += posttest
+
+ifeq ($(KBUILD_VERBOSE),1)
+ posttest_verbose = -v
+else
+ posttest_verbose =
+endif
+
+ifeq ($(CONFIG_64BIT),y)
+ posttest_64bit = -y
+else
+ posttest_64bit = -n
+endif
+
+distill_awk = $(srctree)/arch/x86/tools/distill.awk
+chkobjdump = $(srctree)/arch/x86/tools/chkobjdump.awk
+
+quiet_cmd_posttest = TEST $@
+ cmd_posttest = ($(OBJDUMP) -v | $(AWK) -f $(chkobjdump)) || $(OBJDUMP) -d -j .text $(objtree)/vmlinux | $(AWK) -f $(distill_awk) | $(obj)/test_get_len $(posttest_64bit) $(posttest_verbose)
+
+posttest: $(obj)/test_get_len vmlinux
+ $(call cmd,posttest)
+
+hostprogs-y := test_get_len
+
+# -I needed for generated C source and C source which in the kernel tree.
+HOSTCFLAGS_test_get_len.o := -Wall -I$(objtree)/arch/x86/lib/ -I$(srctree)/arch/x86/include/ -I$(srctree)/arch/x86/lib/ -I$(srctree)/include/
+
+# Dependencies are also needed.
+$(obj)/test_get_len.o: $(srctree)/arch/x86/lib/insn.c $(srctree)/arch/x86/lib/inat.c $(srctree)/arch/x86/include/asm/inat_types.h $(srctree)/arch/x86/include/asm/inat.h $(srctree)/arch/x86/include/asm/insn.h $(objtree)/arch/x86/lib/inat-tables.c
+
diff --git a/arch/x86/tools/chkobjdump.awk b/arch/x86/tools/chkobjdump.awk
new file mode 100644
index 0000000000000000000000000000000000000000..0d13cd9fdcffd6e5cc791bb23770de06df3a46d9
--- /dev/null
+++ b/arch/x86/tools/chkobjdump.awk
@@ -0,0 +1,23 @@
+# GNU objdump version checker
+#
+# Usage:
+# objdump -v | awk -f chkobjdump.awk
+BEGIN {
+ # objdump version 2.19 or later is OK for the test.
+ od_ver = 2;
+ od_sver = 19;
+}
+
+/^GNU/ {
+ split($4, ver, ".");
+ if (ver[1] > od_ver ||
+ (ver[1] == od_ver && ver[2] >= od_sver)) {
+ exit 1;
+ } else {
+ printf("Warning: objdump version %s is older than %d.%d\n",
+ $4, od_ver, od_sver);
+ print("Warning: Skipping posttest.");
+ # Logic is inverted, because we just skip test without error.
+ exit 0;
+ }
+}
diff --git a/arch/x86/tools/distill.awk b/arch/x86/tools/distill.awk
new file mode 100644
index 0000000000000000000000000000000000000000..c13c0ee48ab421a9a13e9170420dce1fe3e3d796
--- /dev/null
+++ b/arch/x86/tools/distill.awk
@@ -0,0 +1,47 @@
+#!/bin/awk -f
+# Usage: objdump -d a.out | awk -f distill.awk | ./test_get_len
+# Distills the disassembly as follows:
+# - Removes all lines except the disassembled instructions.
+# - For instructions that exceed 1 line (7 bytes), crams all the hex bytes
+# into a single line.
+# - Remove bad(or prefix only) instructions
+
+BEGIN {
+ prev_addr = ""
+ prev_hex = ""
+ prev_mnemonic = ""
+ bad_expr = "(\\(bad\\)|^rex|^.byte|^rep(z|nz)$|^lock$|^es$|^cs$|^ss$|^ds$|^fs$|^gs$|^data(16|32)$|^addr(16|32|64))"
+ fwait_expr = "^9b "
+ fwait_str="9b\tfwait"
+}
+
+/^ *[0-9a-f]+ <[^>]*>:/ {
+ # Symbol entry
+ printf("%s%s\n", $2, $1)
+}
+
+/^ *[0-9a-f]+:/ {
+ if (split($0, field, "\t") < 3) {
+ # This is a continuation of the same insn.
+ prev_hex = prev_hex field[2]
+ } else {
+ # Skip bad instructions
+ if (match(prev_mnemonic, bad_expr))
+ prev_addr = ""
+ # Split fwait from other f* instructions
+ if (match(prev_hex, fwait_expr) && prev_mnemonic != "fwait") {
+ printf "%s\t%s\n", prev_addr, fwait_str
+ sub(fwait_expr, "", prev_hex)
+ }
+ if (prev_addr != "")
+ printf "%s\t%s\t%s\n", prev_addr, prev_hex, prev_mnemonic
+ prev_addr = field[1]
+ prev_hex = field[2]
+ prev_mnemonic = field[3]
+ }
+}
+
+END {
+ if (prev_addr != "")
+ printf "%s\t%s\t%s\n", prev_addr, prev_hex, prev_mnemonic
+}
diff --git a/arch/x86/tools/gen-insn-attr-x86.awk b/arch/x86/tools/gen-insn-attr-x86.awk
new file mode 100644
index 0000000000000000000000000000000000000000..e34e92a28eb6692d610498e7e0e44aa701d2fb72
--- /dev/null
+++ b/arch/x86/tools/gen-insn-attr-x86.awk
@@ -0,0 +1,380 @@
+#!/bin/awk -f
+# gen-insn-attr-x86.awk: Instruction attribute table generator
+# Written by Masami Hiramatsu
+#
+# Usage: awk -f gen-insn-attr-x86.awk x86-opcode-map.txt > inat-tables.c
+
+# Awk implementation sanity check
+function check_awk_implement() {
+ if (!match("abc", "[[:lower:]]+"))
+ return "Your awk doesn't support charactor-class."
+ if (sprintf("%x", 0) != "0")
+ return "Your awk has a printf-format problem."
+ return ""
+}
+
+# Clear working vars
+function clear_vars() {
+ delete table
+ delete lptable2
+ delete lptable1
+ delete lptable3
+ eid = -1 # escape id
+ gid = -1 # group id
+ aid = -1 # AVX id
+ tname = ""
+}
+
+BEGIN {
+ # Implementation error checking
+ awkchecked = check_awk_implement()
+ if (awkchecked != "") {
+ print "Error: " awkchecked > "/dev/stderr"
+ print "Please try to use gawk." > "/dev/stderr"
+ exit 1
+ }
+
+ # Setup generating tables
+ print "/* x86 opcode map generated from x86-opcode-map.txt */"
+ print "/* Do not change this code. */\n"
+ ggid = 1
+ geid = 1
+ gaid = 0
+ delete etable
+ delete gtable
+ delete atable
+
+ opnd_expr = "^[[:alpha:]/]"
+ ext_expr = "^\\("
+ sep_expr = "^\\|$"
+ group_expr = "^Grp[[:alnum:]]+"
+
+ imm_expr = "^[IJAO][[:lower:]]"
+ imm_flag["Ib"] = "INAT_MAKE_IMM(INAT_IMM_BYTE)"
+ imm_flag["Jb"] = "INAT_MAKE_IMM(INAT_IMM_BYTE)"
+ imm_flag["Iw"] = "INAT_MAKE_IMM(INAT_IMM_WORD)"
+ imm_flag["Id"] = "INAT_MAKE_IMM(INAT_IMM_DWORD)"
+ imm_flag["Iq"] = "INAT_MAKE_IMM(INAT_IMM_QWORD)"
+ imm_flag["Ap"] = "INAT_MAKE_IMM(INAT_IMM_PTR)"
+ imm_flag["Iz"] = "INAT_MAKE_IMM(INAT_IMM_VWORD32)"
+ imm_flag["Jz"] = "INAT_MAKE_IMM(INAT_IMM_VWORD32)"
+ imm_flag["Iv"] = "INAT_MAKE_IMM(INAT_IMM_VWORD)"
+ imm_flag["Ob"] = "INAT_MOFFSET"
+ imm_flag["Ov"] = "INAT_MOFFSET"
+
+ modrm_expr = "^([CDEGMNPQRSUVW/][[:lower:]]+|NTA|T[012])"
+ force64_expr = "\\([df]64\\)"
+ rex_expr = "^REX(\\.[XRWB]+)*"
+ fpu_expr = "^ESC" # TODO
+
+ lprefix1_expr = "\\(66\\)"
+ lprefix2_expr = "\\(F3\\)"
+ lprefix3_expr = "\\(F2\\)"
+ max_lprefix = 4
+
+ vexok_expr = "\\(VEX\\)"
+ vexonly_expr = "\\(oVEX\\)"
+
+ prefix_expr = "\\(Prefix\\)"
+ prefix_num["Operand-Size"] = "INAT_PFX_OPNDSZ"
+ prefix_num["REPNE"] = "INAT_PFX_REPNE"
+ prefix_num["REP/REPE"] = "INAT_PFX_REPE"
+ prefix_num["LOCK"] = "INAT_PFX_LOCK"
+ prefix_num["SEG=CS"] = "INAT_PFX_CS"
+ prefix_num["SEG=DS"] = "INAT_PFX_DS"
+ prefix_num["SEG=ES"] = "INAT_PFX_ES"
+ prefix_num["SEG=FS"] = "INAT_PFX_FS"
+ prefix_num["SEG=GS"] = "INAT_PFX_GS"
+ prefix_num["SEG=SS"] = "INAT_PFX_SS"
+ prefix_num["Address-Size"] = "INAT_PFX_ADDRSZ"
+ prefix_num["2bytes-VEX"] = "INAT_PFX_VEX2"
+ prefix_num["3bytes-VEX"] = "INAT_PFX_VEX3"
+
+ clear_vars()
+}
+
+function semantic_error(msg) {
+ print "Semantic error at " NR ": " msg > "/dev/stderr"
+ exit 1
+}
+
+function debug(msg) {
+ print "DEBUG: " msg
+}
+
+function array_size(arr, i,c) {
+ c = 0
+ for (i in arr)
+ c++
+ return c
+}
+
+/^Table:/ {
+ print "/* " $0 " */"
+ if (tname != "")
+ semantic_error("Hit Table: before EndTable:.");
+}
+
+/^Referrer:/ {
+ if (NF != 1) {
+ # escape opcode table
+ ref = ""
+ for (i = 2; i <= NF; i++)
+ ref = ref $i
+ eid = escape[ref]
+ tname = sprintf("inat_escape_table_%d", eid)
+ }
+}
+
+/^AVXcode:/ {
+ if (NF != 1) {
+ # AVX/escape opcode table
+ aid = $2
+ if (gaid <= aid)
+ gaid = aid + 1
+ if (tname == "") # AVX only opcode table
+ tname = sprintf("inat_avx_table_%d", $2)
+ }
+ if (aid == -1 && eid == -1) # primary opcode table
+ tname = "inat_primary_table"
+}
+
+/^GrpTable:/ {
+ print "/* " $0 " */"
+ if (!($2 in group))
+ semantic_error("No group: " $2 )
+ gid = group[$2]
+ tname = "inat_group_table_" gid
+}
+
+function print_table(tbl,name,fmt,n)
+{
+ print "const insn_attr_t " name " = {"
+ for (i = 0; i < n; i++) {
+ id = sprintf(fmt, i)
+ if (tbl[id])
+ print " [" id "] = " tbl[id] ","
+ }
+ print "};"
+}
+
+/^EndTable/ {
+ if (gid != -1) {
+ # print group tables
+ if (array_size(table) != 0) {
+ print_table(table, tname "[INAT_GROUP_TABLE_SIZE]",
+ "0x%x", 8)
+ gtable[gid,0] = tname
+ }
+ if (array_size(lptable1) != 0) {
+ print_table(lptable1, tname "_1[INAT_GROUP_TABLE_SIZE]",
+ "0x%x", 8)
+ gtable[gid,1] = tname "_1"
+ }
+ if (array_size(lptable2) != 0) {
+ print_table(lptable2, tname "_2[INAT_GROUP_TABLE_SIZE]",
+ "0x%x", 8)
+ gtable[gid,2] = tname "_2"
+ }
+ if (array_size(lptable3) != 0) {
+ print_table(lptable3, tname "_3[INAT_GROUP_TABLE_SIZE]",
+ "0x%x", 8)
+ gtable[gid,3] = tname "_3"
+ }
+ } else {
+ # print primary/escaped tables
+ if (array_size(table) != 0) {
+ print_table(table, tname "[INAT_OPCODE_TABLE_SIZE]",
+ "0x%02x", 256)
+ etable[eid,0] = tname
+ if (aid >= 0)
+ atable[aid,0] = tname
+ }
+ if (array_size(lptable1) != 0) {
+ print_table(lptable1,tname "_1[INAT_OPCODE_TABLE_SIZE]",
+ "0x%02x", 256)
+ etable[eid,1] = tname "_1"
+ if (aid >= 0)
+ atable[aid,1] = tname "_1"
+ }
+ if (array_size(lptable2) != 0) {
+ print_table(lptable2,tname "_2[INAT_OPCODE_TABLE_SIZE]",
+ "0x%02x", 256)
+ etable[eid,2] = tname "_2"
+ if (aid >= 0)
+ atable[aid,2] = tname "_2"
+ }
+ if (array_size(lptable3) != 0) {
+ print_table(lptable3,tname "_3[INAT_OPCODE_TABLE_SIZE]",
+ "0x%02x", 256)
+ etable[eid,3] = tname "_3"
+ if (aid >= 0)
+ atable[aid,3] = tname "_3"
+ }
+ }
+ print ""
+ clear_vars()
+}
+
+function add_flags(old,new) {
+ if (old && new)
+ return old " | " new
+ else if (old)
+ return old
+ else
+ return new
+}
+
+# convert operands to flags.
+function convert_operands(opnd, i,imm,mod)
+{
+ imm = null
+ mod = null
+ for (i in opnd) {
+ i = opnd[i]
+ if (match(i, imm_expr) == 1) {
+ if (!imm_flag[i])
+ semantic_error("Unknown imm opnd: " i)
+ if (imm) {
+ if (i != "Ib")
+ semantic_error("Second IMM error")
+ imm = add_flags(imm, "INAT_SCNDIMM")
+ } else
+ imm = imm_flag[i]
+ } else if (match(i, modrm_expr))
+ mod = "INAT_MODRM"
+ }
+ return add_flags(imm, mod)
+}
+
+/^[0-9a-f]+\:/ {
+ if (NR == 1)
+ next
+ # get index
+ idx = "0x" substr($1, 1, index($1,":") - 1)
+ if (idx in table)
+ semantic_error("Redefine " idx " in " tname)
+
+ # check if escaped opcode
+ if ("escape" == $2) {
+ if ($3 != "#")
+ semantic_error("No escaped name")
+ ref = ""
+ for (i = 4; i <= NF; i++)
+ ref = ref $i
+ if (ref in escape)
+ semantic_error("Redefine escape (" ref ")")
+ escape[ref] = geid
+ geid++
+ table[idx] = "INAT_MAKE_ESCAPE(" escape[ref] ")"
+ next
+ }
+
+ variant = null
+ # converts
+ i = 2
+ while (i <= NF) {
+ opcode = $(i++)
+ delete opnds
+ ext = null
+ flags = null
+ opnd = null
+ # parse one opcode
+ if (match($i, opnd_expr)) {
+ opnd = $i
+ split($(i++), opnds, ",")
+ flags = convert_operands(opnds)
+ }
+ if (match($i, ext_expr))
+ ext = $(i++)
+ if (match($i, sep_expr))
+ i++
+ else if (i < NF)
+ semantic_error($i " is not a separator")
+
+ # check if group opcode
+ if (match(opcode, group_expr)) {
+ if (!(opcode in group)) {
+ group[opcode] = ggid
+ ggid++
+ }
+ flags = add_flags(flags, "INAT_MAKE_GROUP(" group[opcode] ")")
+ }
+ # check force(or default) 64bit
+ if (match(ext, force64_expr))
+ flags = add_flags(flags, "INAT_FORCE64")
+
+ # check REX prefix
+ if (match(opcode, rex_expr))
+ flags = add_flags(flags, "INAT_MAKE_PREFIX(INAT_PFX_REX)")
+
+ # check coprocessor escape : TODO
+ if (match(opcode, fpu_expr))
+ flags = add_flags(flags, "INAT_MODRM")
+
+ # check VEX only code
+ if (match(ext, vexonly_expr))
+ flags = add_flags(flags, "INAT_VEXOK | INAT_VEXONLY")
+
+ # check VEX only code
+ if (match(ext, vexok_expr))
+ flags = add_flags(flags, "INAT_VEXOK")
+
+ # check prefixes
+ if (match(ext, prefix_expr)) {
+ if (!prefix_num[opcode])
+ semantic_error("Unknown prefix: " opcode)
+ flags = add_flags(flags, "INAT_MAKE_PREFIX(" prefix_num[opcode] ")")
+ }
+ if (length(flags) == 0)
+ continue
+ # check if last prefix
+ if (match(ext, lprefix1_expr)) {
+ lptable1[idx] = add_flags(lptable1[idx],flags)
+ variant = "INAT_VARIANT"
+ } else if (match(ext, lprefix2_expr)) {
+ lptable2[idx] = add_flags(lptable2[idx],flags)
+ variant = "INAT_VARIANT"
+ } else if (match(ext, lprefix3_expr)) {
+ lptable3[idx] = add_flags(lptable3[idx],flags)
+ variant = "INAT_VARIANT"
+ } else {
+ table[idx] = add_flags(table[idx],flags)
+ }
+ }
+ if (variant)
+ table[idx] = add_flags(table[idx],variant)
+}
+
+END {
+ if (awkchecked != "")
+ exit 1
+ # print escape opcode map's array
+ print "/* Escape opcode map array */"
+ print "const insn_attr_t const *inat_escape_tables[INAT_ESC_MAX + 1]" \
+ "[INAT_LSTPFX_MAX + 1] = {"
+ for (i = 0; i < geid; i++)
+ for (j = 0; j < max_lprefix; j++)
+ if (etable[i,j])
+ print " ["i"]["j"] = "etable[i,j]","
+ print "};\n"
+ # print group opcode map's array
+ print "/* Group opcode map array */"
+ print "const insn_attr_t const *inat_group_tables[INAT_GRP_MAX + 1]"\
+ "[INAT_LSTPFX_MAX + 1] = {"
+ for (i = 0; i < ggid; i++)
+ for (j = 0; j < max_lprefix; j++)
+ if (gtable[i,j])
+ print " ["i"]["j"] = "gtable[i,j]","
+ print "};\n"
+ # print AVX opcode map's array
+ print "/* AVX opcode map array */"
+ print "const insn_attr_t const *inat_avx_tables[X86_VEX_M_MAX + 1]"\
+ "[INAT_LSTPFX_MAX + 1] = {"
+ for (i = 0; i < gaid; i++)
+ for (j = 0; j < max_lprefix; j++)
+ if (atable[i,j])
+ print " ["i"]["j"] = "atable[i,j]","
+ print "};"
+}
+
diff --git a/arch/x86/tools/test_get_len.c b/arch/x86/tools/test_get_len.c
new file mode 100644
index 0000000000000000000000000000000000000000..d8214dc03fa7a46e4dc2c9408b8674a13017e1e0
--- /dev/null
+++ b/arch/x86/tools/test_get_len.c
@@ -0,0 +1,173 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) IBM Corporation, 2009
+ */
+
+#include
+#include
+#include
+#include
+#include
+
+#define unlikely(cond) (cond)
+
+#include
+#include
+#include
+
+/*
+ * Test of instruction analysis in general and insn_get_length() in
+ * particular. See if insn_get_length() and the disassembler agree
+ * on the length of each instruction in an elf disassembly.
+ *
+ * Usage: objdump -d a.out | awk -f distill.awk | ./test_get_len
+ */
+
+const char *prog;
+static int verbose;
+static int x86_64;
+
+static void usage(void)
+{
+ fprintf(stderr, "Usage: objdump -d a.out | awk -f distill.awk |"
+ " %s [-y|-n] [-v] \n", prog);
+ fprintf(stderr, "\t-y 64bit mode\n");
+ fprintf(stderr, "\t-n 32bit mode\n");
+ fprintf(stderr, "\t-v verbose mode\n");
+ exit(1);
+}
+
+static void malformed_line(const char *line, int line_nr)
+{
+ fprintf(stderr, "%s: malformed line %d:\n%s", prog, line_nr, line);
+ exit(3);
+}
+
+static void dump_field(FILE *fp, const char *name, const char *indent,
+ struct insn_field *field)
+{
+ fprintf(fp, "%s.%s = {\n", indent, name);
+ fprintf(fp, "%s\t.value = %d, bytes[] = {%x, %x, %x, %x},\n",
+ indent, field->value, field->bytes[0], field->bytes[1],
+ field->bytes[2], field->bytes[3]);
+ fprintf(fp, "%s\t.got = %d, .nbytes = %d},\n", indent,
+ field->got, field->nbytes);
+}
+
+static void dump_insn(FILE *fp, struct insn *insn)
+{
+ fprintf(fp, "Instruction = { \n");
+ dump_field(fp, "prefixes", "\t", &insn->prefixes);
+ dump_field(fp, "rex_prefix", "\t", &insn->rex_prefix);
+ dump_field(fp, "vex_prefix", "\t", &insn->vex_prefix);
+ dump_field(fp, "opcode", "\t", &insn->opcode);
+ dump_field(fp, "modrm", "\t", &insn->modrm);
+ dump_field(fp, "sib", "\t", &insn->sib);
+ dump_field(fp, "displacement", "\t", &insn->displacement);
+ dump_field(fp, "immediate1", "\t", &insn->immediate1);
+ dump_field(fp, "immediate2", "\t", &insn->immediate2);
+ fprintf(fp, "\t.attr = %x, .opnd_bytes = %d, .addr_bytes = %d,\n",
+ insn->attr, insn->opnd_bytes, insn->addr_bytes);
+ fprintf(fp, "\t.length = %d, .x86_64 = %d, .kaddr = %p}\n",
+ insn->length, insn->x86_64, insn->kaddr);
+}
+
+static void parse_args(int argc, char **argv)
+{
+ int c;
+ prog = argv[0];
+ while ((c = getopt(argc, argv, "ynv")) != -1) {
+ switch (c) {
+ case 'y':
+ x86_64 = 1;
+ break;
+ case 'n':
+ x86_64 = 0;
+ break;
+ case 'v':
+ verbose = 1;
+ break;
+ default:
+ usage();
+ }
+ }
+}
+
+#define BUFSIZE 256
+
+int main(int argc, char **argv)
+{
+ char line[BUFSIZE], sym[BUFSIZE] = "";
+ unsigned char insn_buf[16];
+ struct insn insn;
+ int insns = 0, c;
+ int warnings = 0;
+
+ parse_args(argc, argv);
+
+ while (fgets(line, BUFSIZE, stdin)) {
+ char copy[BUFSIZE], *s, *tab1, *tab2;
+ int nb = 0;
+ unsigned int b;
+
+ if (line[0] == '<') {
+ /* Symbol line */
+ strcpy(sym, line);
+ continue;
+ }
+
+ insns++;
+ memset(insn_buf, 0, 16);
+ strcpy(copy, line);
+ tab1 = strchr(copy, '\t');
+ if (!tab1)
+ malformed_line(line, insns);
+ s = tab1 + 1;
+ s += strspn(s, " ");
+ tab2 = strchr(s, '\t');
+ if (!tab2)
+ malformed_line(line, insns);
+ *tab2 = '\0'; /* Characters beyond tab2 aren't examined */
+ while (s < tab2) {
+ if (sscanf(s, "%x", &b) == 1) {
+ insn_buf[nb++] = (unsigned char) b;
+ s += 3;
+ } else
+ break;
+ }
+ /* Decode an instruction */
+ insn_init(&insn, insn_buf, x86_64);
+ insn_get_length(&insn);
+ if (insn.length != nb) {
+ warnings++;
+ fprintf(stderr, "Warning: %s found difference at %s\n",
+ prog, sym);
+ fprintf(stderr, "Warning: %s", line);
+ fprintf(stderr, "Warning: objdump says %d bytes, but "
+ "insn_get_length() says %d\n", nb,
+ insn.length);
+ if (verbose)
+ dump_insn(stderr, &insn);
+ }
+ }
+ if (warnings)
+ fprintf(stderr, "Warning: decoded and checked %d"
+ " instructions with %d warnings\n", insns, warnings);
+ else
+ fprintf(stderr, "Succeed: decoded and checked %d"
+ " instructions\n", insns);
+ return 0;
+}
diff --git a/drivers/edac/edac_mce_amd.c b/drivers/edac/edac_mce_amd.c
index 713ed7d372475dc325ac7cfca8cc5e22181af29b..689cc6a6214df3b2f9aecb04aedabeaa2779955d 100644
--- a/drivers/edac/edac_mce_amd.c
+++ b/drivers/edac/edac_mce_amd.c
@@ -3,7 +3,6 @@
static bool report_gart_errors;
static void (*nb_bus_decoder)(int node_id, struct err_regs *regs);
-static void (*orig_mce_callback)(struct mce *m);
void amd_report_gart_errors(bool v)
{
@@ -363,8 +362,10 @@ static inline void amd_decode_err_code(unsigned int ec)
pr_warning("Huh? Unknown MCE error 0x%x\n", ec);
}
-static void amd_decode_mce(struct mce *m)
+static int amd_decode_mce(struct notifier_block *nb, unsigned long val,
+ void *data)
{
+ struct mce *m = (struct mce *)data;
struct err_regs regs;
int node, ecc;
@@ -420,20 +421,22 @@ static void amd_decode_mce(struct mce *m)
}
amd_decode_err_code(m->status & 0xffff);
+
+ return NOTIFY_STOP;
}
+static struct notifier_block amd_mce_dec_nb = {
+ .notifier_call = amd_decode_mce,
+};
+
static int __init mce_amd_init(void)
{
/*
* We can decode MCEs for Opteron and later CPUs:
*/
if ((boot_cpu_data.x86_vendor == X86_VENDOR_AMD) &&
- (boot_cpu_data.x86 >= 0xf)) {
- /* safe the default decode mce callback */
- orig_mce_callback = x86_mce_decode_callback;
-
- x86_mce_decode_callback = amd_decode_mce;
- }
+ (boot_cpu_data.x86 >= 0xf))
+ atomic_notifier_chain_register(&x86_mce_decoder_chain, &amd_mce_dec_nb);
return 0;
}
@@ -442,7 +445,7 @@ early_initcall(mce_amd_init);
#ifdef MODULE
static void __exit mce_amd_exit(void)
{
- x86_mce_decode_callback = orig_mce_callback;
+ atomic_notifier_chain_unregister(&x86_mce_decoder_chain, &amd_mce_dec_nb);
}
MODULE_DESCRIPTION("AMD MCE decoder");
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 4ec5e67e18cfda40ad34a52187a3ff288682f6be..47bbdf9c38d0428328e48d9c772cdc3086375e5c 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -117,12 +117,12 @@ struct ftrace_event_call {
struct dentry *dir;
struct trace_event *event;
int enabled;
- int (*regfunc)(void *);
- void (*unregfunc)(void *);
+ int (*regfunc)(struct ftrace_event_call *);
+ void (*unregfunc)(struct ftrace_event_call *);
int id;
- int (*raw_init)(void);
- int (*show_format)(struct ftrace_event_call *call,
- struct trace_seq *s);
+ int (*raw_init)(struct ftrace_event_call *);
+ int (*show_format)(struct ftrace_event_call *,
+ struct trace_seq *);
int (*define_fields)(struct ftrace_event_call *);
struct list_head fields;
int filter_active;
@@ -131,20 +131,20 @@ struct ftrace_event_call {
void *data;
atomic_t profile_count;
- int (*profile_enable)(void);
- void (*profile_disable)(void);
+ int (*profile_enable)(struct ftrace_event_call *);
+ void (*profile_disable)(struct ftrace_event_call *);
};
#define FTRACE_MAX_PROFILE_SIZE 2048
-extern char *trace_profile_buf;
-extern char *trace_profile_buf_nmi;
+extern char *perf_trace_buf;
+extern char *perf_trace_buf_nmi;
#define MAX_FILTER_PRED 32
#define MAX_FILTER_STR_VAL 256 /* Should handle KSYM_SYMBOL_LEN */
extern void destroy_preds(struct ftrace_event_call *call);
-extern int filter_match_preds(struct ftrace_event_call *call, void *rec);
+extern int filter_match_preds(struct event_filter *filter, void *rec);
extern int filter_current_check_discard(struct ring_buffer *buffer,
struct ftrace_event_call *call,
void *rec,
@@ -157,11 +157,12 @@ enum {
FILTER_PTR_STRING,
};
-extern int trace_define_field(struct ftrace_event_call *call,
- const char *type, const char *name,
- int offset, int size, int is_signed,
- int filter_type);
extern int trace_define_common_fields(struct ftrace_event_call *call);
+extern int trace_define_field(struct ftrace_event_call *call, const char *type,
+ const char *name, int offset, int size,
+ int is_signed, int filter_type);
+extern int trace_add_event_call(struct ftrace_event_call *call);
+extern void trace_remove_event_call(struct ftrace_event_call *call);
#define is_signed_type(type) (((type)(-1)) < 0)
@@ -186,4 +187,13 @@ do { \
__trace_printk(ip, fmt, ##args); \
} while (0)
+#ifdef CONFIG_EVENT_PROFILE
+struct perf_event;
+extern int ftrace_profile_enable(int event_id);
+extern void ftrace_profile_disable(int event_id);
+extern int ftrace_profile_set_filter(struct perf_event *event, int event_id,
+ char *filter_str);
+extern void ftrace_profile_free_filter(struct perf_event *event);
+#endif
+
#endif /* _LINUX_FTRACE_EVENT_H */
diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h
new file mode 100644
index 0000000000000000000000000000000000000000..a03daed08c59e44d8294525df8fda859eeab417e
--- /dev/null
+++ b/include/linux/hw_breakpoint.h
@@ -0,0 +1,131 @@
+#ifndef _LINUX_HW_BREAKPOINT_H
+#define _LINUX_HW_BREAKPOINT_H
+
+enum {
+ HW_BREAKPOINT_LEN_1 = 1,
+ HW_BREAKPOINT_LEN_2 = 2,
+ HW_BREAKPOINT_LEN_4 = 4,
+ HW_BREAKPOINT_LEN_8 = 8,
+};
+
+enum {
+ HW_BREAKPOINT_R = 1,
+ HW_BREAKPOINT_W = 2,
+ HW_BREAKPOINT_X = 4,
+};
+
+#ifdef __KERNEL__
+
+#include
+
+#ifdef CONFIG_HAVE_HW_BREAKPOINT
+
+/* As it's for in-kernel or ptrace use, we want it to be pinned */
+#define DEFINE_BREAKPOINT_ATTR(name) \
+struct perf_event_attr name = { \
+ .type = PERF_TYPE_BREAKPOINT, \
+ .size = sizeof(name), \
+ .pinned = 1, \
+};
+
+static inline void hw_breakpoint_init(struct perf_event_attr *attr)
+{
+ attr->type = PERF_TYPE_BREAKPOINT;
+ attr->size = sizeof(*attr);
+ attr->pinned = 1;
+}
+
+static inline unsigned long hw_breakpoint_addr(struct perf_event *bp)
+{
+ return bp->attr.bp_addr;
+}
+
+static inline int hw_breakpoint_type(struct perf_event *bp)
+{
+ return bp->attr.bp_type;
+}
+
+static inline int hw_breakpoint_len(struct perf_event *bp)
+{
+ return bp->attr.bp_len;
+}
+
+extern struct perf_event *
+register_user_hw_breakpoint(struct perf_event_attr *attr,
+ perf_callback_t triggered,
+ struct task_struct *tsk);
+
+/* FIXME: only change from the attr, and don't unregister */
+extern struct perf_event *
+modify_user_hw_breakpoint(struct perf_event *bp,
+ struct perf_event_attr *attr,
+ perf_callback_t triggered,
+ struct task_struct *tsk);
+
+/*
+ * Kernel breakpoints are not associated with any particular thread.
+ */
+extern struct perf_event *
+register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
+ perf_callback_t triggered,
+ int cpu);
+
+extern struct perf_event **
+register_wide_hw_breakpoint(struct perf_event_attr *attr,
+ perf_callback_t triggered);
+
+extern int register_perf_hw_breakpoint(struct perf_event *bp);
+extern int __register_perf_hw_breakpoint(struct perf_event *bp);
+extern void unregister_hw_breakpoint(struct perf_event *bp);
+extern void unregister_wide_hw_breakpoint(struct perf_event **cpu_events);
+
+extern int reserve_bp_slot(struct perf_event *bp);
+extern void release_bp_slot(struct perf_event *bp);
+
+extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);
+
+static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp)
+{
+ return &bp->hw.info;
+}
+
+#else /* !CONFIG_HAVE_HW_BREAKPOINT */
+
+static inline struct perf_event *
+register_user_hw_breakpoint(struct perf_event_attr *attr,
+ perf_callback_t triggered,
+ struct task_struct *tsk) { return NULL; }
+static inline struct perf_event *
+modify_user_hw_breakpoint(struct perf_event *bp,
+ struct perf_event_attr *attr,
+ perf_callback_t triggered,
+ struct task_struct *tsk) { return NULL; }
+static inline struct perf_event *
+register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
+ perf_callback_t triggered,
+ int cpu) { return NULL; }
+static inline struct perf_event **
+register_wide_hw_breakpoint(struct perf_event_attr *attr,
+ perf_callback_t triggered) { return NULL; }
+static inline int
+register_perf_hw_breakpoint(struct perf_event *bp) { return -ENOSYS; }
+static inline int
+__register_perf_hw_breakpoint(struct perf_event *bp) { return -ENOSYS; }
+static inline void unregister_hw_breakpoint(struct perf_event *bp) { }
+static inline void
+unregister_wide_hw_breakpoint(struct perf_event **cpu_events) { }
+static inline int
+reserve_bp_slot(struct perf_event *bp) {return -ENOSYS; }
+static inline void release_bp_slot(struct perf_event *bp) { }
+
+static inline void flush_ptrace_hw_breakpoint(struct task_struct *tsk) { }
+
+static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp)
+{
+ return NULL;
+}
+
+#endif /* CONFIG_HAVE_HW_BREAKPOINT */
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_HW_BREAKPOINT_H */
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
index 3a46b7b7abb219c40bf39ce4d5f4e448da131212..1b672f74a32f0d76d27c277c759c6c3a24135674 100644
--- a/include/linux/kprobes.h
+++ b/include/linux/kprobes.h
@@ -296,6 +296,8 @@ void recycle_rp_inst(struct kretprobe_instance *ri, struct hlist_head *head);
int disable_kprobe(struct kprobe *kp);
int enable_kprobe(struct kprobe *kp);
+void dump_kprobe(struct kprobe *kp);
+
#else /* !CONFIG_KPROBES: */
static inline int kprobes_built_in(void)
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index 7b7fbf433cffb6377605eea61682c48905c7b33e..e3fb256067066ad947596efeb9f848ee136acbe7 100644
--- a/include/linux/perf_counter.h
+++ b/include/linux/perf_counter.h
@@ -106,6 +106,8 @@ enum perf_sw_ids {
PERF_COUNT_SW_CPU_MIGRATIONS = 4,
PERF_COUNT_SW_PAGE_FAULTS_MIN = 5,
PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6,
+ PERF_COUNT_SW_ALIGNMENT_FAULTS = 7,
+ PERF_COUNT_SW_EMULATION_FAULTS = 8,
PERF_COUNT_SW_MAX, /* non-ABI */
};
@@ -225,6 +227,7 @@ struct perf_counter_attr {
#define PERF_COUNTER_IOC_RESET _IO ('$', 3)
#define PERF_COUNTER_IOC_PERIOD _IOW('$', 4, u64)
#define PERF_COUNTER_IOC_SET_OUTPUT _IO ('$', 5)
+#define PERF_COUNTER_IOC_SET_FILTER _IOW('$', 6, char *)
enum perf_counter_ioc_flags {
PERF_IOC_FLAG_GROUP = 1U << 0,
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 9e7012689a8407b65d21b57f8ea97760a40bb888..43adbd7f0010c21719f75dc05dfbf5d61465abf7 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -18,6 +18,10 @@
#include
#include
+#ifdef CONFIG_HAVE_HW_BREAKPOINT
+#include
+#endif
+
/*
* User-space ABI bits:
*/
@@ -31,6 +35,7 @@ enum perf_type_id {
PERF_TYPE_TRACEPOINT = 2,
PERF_TYPE_HW_CACHE = 3,
PERF_TYPE_RAW = 4,
+ PERF_TYPE_BREAKPOINT = 5,
PERF_TYPE_MAX, /* non-ABI */
};
@@ -102,6 +107,8 @@ enum perf_sw_ids {
PERF_COUNT_SW_CPU_MIGRATIONS = 4,
PERF_COUNT_SW_PAGE_FAULTS_MIN = 5,
PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6,
+ PERF_COUNT_SW_ALIGNMENT_FAULTS = 7,
+ PERF_COUNT_SW_EMULATION_FAULTS = 8,
PERF_COUNT_SW_MAX, /* non-ABI */
};
@@ -207,6 +214,15 @@ struct perf_event_attr {
__u32 wakeup_events; /* wakeup every n events */
__u32 wakeup_watermark; /* bytes before wakeup */
};
+
+ union {
+ struct { /* Hardware breakpoint info */
+ __u64 bp_addr;
+ __u32 bp_type;
+ __u32 bp_len;
+ };
+ };
+
__u32 __reserved_2;
__u64 __reserved_3;
@@ -219,8 +235,9 @@ struct perf_event_attr {
#define PERF_EVENT_IOC_DISABLE _IO ('$', 1)
#define PERF_EVENT_IOC_REFRESH _IO ('$', 2)
#define PERF_EVENT_IOC_RESET _IO ('$', 3)
-#define PERF_EVENT_IOC_PERIOD _IOW('$', 4, u64)
+#define PERF_EVENT_IOC_PERIOD _IOW('$', 4, __u64)
#define PERF_EVENT_IOC_SET_OUTPUT _IO ('$', 5)
+#define PERF_EVENT_IOC_SET_FILTER _IOW('$', 6, char *)
enum perf_event_ioc_flags {
PERF_IOC_FLAG_GROUP = 1U << 0,
@@ -475,6 +492,11 @@ struct hw_perf_event {
s64 remaining;
struct hrtimer hrtimer;
};
+#ifdef CONFIG_HAVE_HW_BREAKPOINT
+ union { /* breakpoint */
+ struct arch_hw_breakpoint info;
+ };
+#endif
};
atomic64_t prev_count;
u64 sample_period;
@@ -543,6 +565,10 @@ struct perf_pending_entry {
void (*func)(struct perf_pending_entry *);
};
+typedef void (*perf_callback_t)(struct perf_event *, void *);
+
+struct perf_sample_data;
+
/**
* struct perf_event - performance event kernel representation:
*/
@@ -585,7 +611,7 @@ struct perf_event {
u64 tstamp_running;
u64 tstamp_stopped;
- struct perf_event_attr attr;
+ struct perf_event_attr attr;
struct hw_perf_event hw;
struct perf_event_context *ctx;
@@ -633,7 +659,20 @@ struct perf_event {
struct pid_namespace *ns;
u64 id;
+
+ void (*overflow_handler)(struct perf_event *event,
+ int nmi, struct perf_sample_data *data,
+ struct pt_regs *regs);
+
+#ifdef CONFIG_EVENT_PROFILE
+ struct event_filter *filter;
#endif
+
+ perf_callback_t callback;
+
+ perf_callback_t event_callback;
+
+#endif /* CONFIG_PERF_EVENTS */
};
/**
@@ -706,7 +745,6 @@ struct perf_output_handle {
int nmi;
int sample;
int locked;
- unsigned long flags;
};
#ifdef CONFIG_PERF_EVENTS
@@ -738,6 +776,14 @@ extern int hw_perf_group_sched_in(struct perf_event *group_leader,
struct perf_cpu_context *cpuctx,
struct perf_event_context *ctx, int cpu);
extern void perf_event_update_userpage(struct perf_event *event);
+extern int perf_event_release_kernel(struct perf_event *event);
+extern struct perf_event *
+perf_event_create_kernel_counter(struct perf_event_attr *attr,
+ int cpu,
+ pid_t pid,
+ perf_callback_t callback);
+extern u64 perf_event_read_value(struct perf_event *event,
+ u64 *enabled, u64 *running);
struct perf_sample_data {
u64 type;
@@ -814,6 +860,7 @@ extern int sysctl_perf_event_sample_rate;
extern void perf_event_init(void);
extern void perf_tp_event(int event_id, u64 addr, u64 count,
void *record, int entry_size);
+extern void perf_bp_event(struct perf_event *event, void *data);
#ifndef perf_misc_flags
#define perf_misc_flags(regs) (user_mode(regs) ? PERF_RECORD_MISC_USER : \
@@ -827,6 +874,8 @@ extern int perf_output_begin(struct perf_output_handle *handle,
extern void perf_output_end(struct perf_output_handle *handle);
extern void perf_output_copy(struct perf_output_handle *handle,
const void *buf, unsigned int len);
+extern int perf_swevent_get_recursion_context(void);
+extern void perf_swevent_put_recursion_context(int rctx);
#else
static inline void
perf_event_task_sched_in(struct task_struct *task, int cpu) { }
@@ -848,11 +897,15 @@ static inline int perf_event_task_enable(void) { return -EINVAL; }
static inline void
perf_sw_event(u32 event_id, u64 nr, int nmi,
struct pt_regs *regs, u64 addr) { }
+static inline void
+perf_bp_event(struct perf_event *event, void *data) { }
static inline void perf_event_mmap(struct vm_area_struct *vma) { }
static inline void perf_event_comm(struct task_struct *tsk) { }
static inline void perf_event_fork(struct task_struct *tsk) { }
static inline void perf_event_init(void) { }
+static inline int perf_swevent_get_recursion_context(void) { return -1; }
+static inline void perf_swevent_put_recursion_context(int rctx) { }
#endif
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index a990ace1a8380f01901b742a6b0821aff46a5d9d..e79e2f3ccc516e73b42f32c32ddb772c5cb1cc2c 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -99,37 +99,16 @@ struct perf_event_attr;
#define __SC_TEST6(t6, a6, ...) __SC_TEST(t6); __SC_TEST5(__VA_ARGS__)
#ifdef CONFIG_EVENT_PROFILE
-#define TRACE_SYS_ENTER_PROFILE(sname) \
-static int prof_sysenter_enable_##sname(void) \
-{ \
- return reg_prof_syscall_enter("sys"#sname); \
-} \
- \
-static void prof_sysenter_disable_##sname(void) \
-{ \
- unreg_prof_syscall_enter("sys"#sname); \
-}
-
-#define TRACE_SYS_EXIT_PROFILE(sname) \
-static int prof_sysexit_enable_##sname(void) \
-{ \
- return reg_prof_syscall_exit("sys"#sname); \
-} \
- \
-static void prof_sysexit_disable_##sname(void) \
-{ \
- unreg_prof_syscall_exit("sys"#sname); \
-}
#define TRACE_SYS_ENTER_PROFILE_INIT(sname) \
.profile_count = ATOMIC_INIT(-1), \
- .profile_enable = prof_sysenter_enable_##sname, \
- .profile_disable = prof_sysenter_disable_##sname,
+ .profile_enable = prof_sysenter_enable, \
+ .profile_disable = prof_sysenter_disable,
#define TRACE_SYS_EXIT_PROFILE_INIT(sname) \
.profile_count = ATOMIC_INIT(-1), \
- .profile_enable = prof_sysexit_enable_##sname, \
- .profile_disable = prof_sysexit_disable_##sname,
+ .profile_enable = prof_sysexit_enable, \
+ .profile_disable = prof_sysexit_disable,
#else
#define TRACE_SYS_ENTER_PROFILE(sname)
#define TRACE_SYS_ENTER_PROFILE_INIT(sname)
@@ -153,74 +132,46 @@ static void prof_sysexit_disable_##sname(void) \
#define __SC_STR_TDECL6(t, a, ...) #t, __SC_STR_TDECL5(__VA_ARGS__)
#define SYSCALL_TRACE_ENTER_EVENT(sname) \
+ static const struct syscall_metadata __syscall_meta_##sname; \
static struct ftrace_event_call event_enter_##sname; \
- struct trace_event enter_syscall_print_##sname = { \
+ static struct trace_event enter_syscall_print_##sname = { \
.trace = print_syscall_enter, \
}; \
- static int init_enter_##sname(void) \
- { \
- int num, id; \
- num = syscall_name_to_nr("sys"#sname); \
- if (num < 0) \
- return -ENOSYS; \
- id = register_ftrace_event(&enter_syscall_print_##sname);\
- if (!id) \
- return -ENODEV; \
- event_enter_##sname.id = id; \
- set_syscall_enter_id(num, id); \
- INIT_LIST_HEAD(&event_enter_##sname.fields); \
- return 0; \
- } \
- TRACE_SYS_ENTER_PROFILE(sname); \
static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) \
event_enter_##sname = { \
.name = "sys_enter"#sname, \
.system = "syscalls", \
- .event = &event_syscall_enter, \
- .raw_init = init_enter_##sname, \
+ .event = &enter_syscall_print_##sname, \
+ .raw_init = init_syscall_trace, \
.show_format = syscall_enter_format, \
.define_fields = syscall_enter_define_fields, \
.regfunc = reg_event_syscall_enter, \
.unregfunc = unreg_event_syscall_enter, \
- .data = "sys"#sname, \
+ .data = (void *)&__syscall_meta_##sname,\
TRACE_SYS_ENTER_PROFILE_INIT(sname) \
}
#define SYSCALL_TRACE_EXIT_EVENT(sname) \
+ static const struct syscall_metadata __syscall_meta_##sname; \
static struct ftrace_event_call event_exit_##sname; \
- struct trace_event exit_syscall_print_##sname = { \
+ static struct trace_event exit_syscall_print_##sname = { \
.trace = print_syscall_exit, \
}; \
- static int init_exit_##sname(void) \
- { \
- int num, id; \
- num = syscall_name_to_nr("sys"#sname); \
- if (num < 0) \
- return -ENOSYS; \
- id = register_ftrace_event(&exit_syscall_print_##sname);\
- if (!id) \
- return -ENODEV; \
- event_exit_##sname.id = id; \
- set_syscall_exit_id(num, id); \
- INIT_LIST_HEAD(&event_exit_##sname.fields); \
- return 0; \
- } \
- TRACE_SYS_EXIT_PROFILE(sname); \
static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) \
event_exit_##sname = { \
.name = "sys_exit"#sname, \
.system = "syscalls", \
- .event = &event_syscall_exit, \
- .raw_init = init_exit_##sname, \
+ .event = &exit_syscall_print_##sname, \
+ .raw_init = init_syscall_trace, \
.show_format = syscall_exit_format, \
.define_fields = syscall_exit_define_fields, \
.regfunc = reg_event_syscall_exit, \
.unregfunc = unreg_event_syscall_exit, \
- .data = "sys"#sname, \
+ .data = (void *)&__syscall_meta_##sname,\
TRACE_SYS_EXIT_PROFILE_INIT(sname) \
}
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 2aac8a83e89b9a7994b7570ffb3ea879d763ee23..f59604ed0ec606c75449d6b2cd8416abf6f7f38f 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -280,6 +280,12 @@ static inline void tracepoint_synchronize_unregister(void)
* TRACE_EVENT_FN to perform any (un)registration work.
*/
+#define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print)
+#define DEFINE_EVENT(template, name, proto, args) \
+ DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
+#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
+ DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
+
#define TRACE_EVENT(name, proto, args, struct, assign, print) \
DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
#define TRACE_EVENT_FN(name, proto, args, struct, \
diff --git a/include/trace/define_trace.h b/include/trace/define_trace.h
index 2a4b3bf740336b23418ae972745f8704a2f420fb..5acfb1eb4df91cd096da3ee728bd636955247b0f 100644
--- a/include/trace/define_trace.h
+++ b/include/trace/define_trace.h
@@ -31,6 +31,14 @@
assign, print, reg, unreg) \
DEFINE_TRACE_FN(name, reg, unreg)
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(template, name, proto, args) \
+ DEFINE_TRACE(name)
+
+#undef DEFINE_EVENT_PRINT
+#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
+ DEFINE_TRACE(name)
+
#undef DECLARE_TRACE
#define DECLARE_TRACE(name, proto, args) \
DEFINE_TRACE(name)
@@ -63,6 +71,9 @@
#undef TRACE_EVENT
#undef TRACE_EVENT_FN
+#undef DECLARE_EVENT_CLASS
+#undef DEFINE_EVENT
+#undef DEFINE_EVENT_PRINT
#undef TRACE_HEADER_MULTI_READ
/* Only undef what we defined in this file */
diff --git a/include/trace/events/bkl.h b/include/trace/events/bkl.h
index 8abd620a490ef7c3cef60dfd3c1c4030b73940bf..1af72dc2427881d203c1984081e4691d23bc0c30 100644
--- a/include/trace/events/bkl.h
+++ b/include/trace/events/bkl.h
@@ -13,7 +13,7 @@ TRACE_EVENT(lock_kernel,
TP_ARGS(func, file, line),
TP_STRUCT__entry(
- __field( int, lock_depth )
+ __field( int, depth )
__field_ext( const char *, func, FILTER_PTR_STRING )
__field_ext( const char *, file, FILTER_PTR_STRING )
__field( int, line )
@@ -21,13 +21,13 @@ TRACE_EVENT(lock_kernel,
TP_fast_assign(
/* We want to record the lock_depth after lock is acquired */
- __entry->lock_depth = current->lock_depth + 1;
+ __entry->depth = current->lock_depth + 1;
__entry->func = func;
__entry->file = file;
__entry->line = line;
),
- TP_printk("depth: %d, %s:%d %s()", __entry->lock_depth,
+ TP_printk("depth=%d file:line=%s:%d func=%s()", __entry->depth,
__entry->file, __entry->line, __entry->func)
);
@@ -38,20 +38,20 @@ TRACE_EVENT(unlock_kernel,
TP_ARGS(func, file, line),
TP_STRUCT__entry(
- __field(int, lock_depth)
- __field(const char *, func)
- __field(const char *, file)
- __field(int, line)
+ __field(int, depth )
+ __field(const char *, func )
+ __field(const char *, file )
+ __field(int, line )
),
TP_fast_assign(
- __entry->lock_depth = current->lock_depth;
+ __entry->depth = current->lock_depth;
__entry->func = func;
__entry->file = file;
__entry->line = line;
),
- TP_printk("depth: %d, %s:%d %s()", __entry->lock_depth,
+ TP_printk("depth=%d file:line=%s:%d func=%s()", __entry->depth,
__entry->file, __entry->line, __entry->func)
);
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index 00405b5f624a2d742a1d95d2a6fb59d530b6e369..5fb72733331e4e8a16d0144ad97097b174de80a8 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -8,7 +8,7 @@
#include
#include
-TRACE_EVENT(block_rq_abort,
+DECLARE_EVENT_CLASS(block_rq_with_error,
TP_PROTO(struct request_queue *q, struct request *rq),
@@ -40,41 +40,28 @@ TRACE_EVENT(block_rq_abort,
__entry->nr_sector, __entry->errors)
);
-TRACE_EVENT(block_rq_insert,
+DEFINE_EVENT(block_rq_with_error, block_rq_abort,
TP_PROTO(struct request_queue *q, struct request *rq),
- TP_ARGS(q, rq),
+ TP_ARGS(q, rq)
+);
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( sector_t, sector )
- __field( unsigned int, nr_sector )
- __field( unsigned int, bytes )
- __array( char, rwbs, 6 )
- __array( char, comm, TASK_COMM_LEN )
- __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
- ),
+DEFINE_EVENT(block_rq_with_error, block_rq_requeue,
- TP_fast_assign(
- __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
- __entry->sector = blk_pc_request(rq) ? 0 : blk_rq_pos(rq);
- __entry->nr_sector = blk_pc_request(rq) ? 0 : blk_rq_sectors(rq);
- __entry->bytes = blk_pc_request(rq) ? blk_rq_bytes(rq) : 0;
+ TP_PROTO(struct request_queue *q, struct request *rq),
- blk_fill_rwbs_rq(__entry->rwbs, rq);
- blk_dump_cmd(__get_str(cmd), rq);
- memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
- ),
+ TP_ARGS(q, rq)
+);
- TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
- MAJOR(__entry->dev), MINOR(__entry->dev),
- __entry->rwbs, __entry->bytes, __get_str(cmd),
- (unsigned long long)__entry->sector,
- __entry->nr_sector, __entry->comm)
+DEFINE_EVENT(block_rq_with_error, block_rq_complete,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq)
);
-TRACE_EVENT(block_rq_issue,
+DECLARE_EVENT_CLASS(block_rq,
TP_PROTO(struct request_queue *q, struct request *rq),
@@ -86,7 +73,7 @@ TRACE_EVENT(block_rq_issue,
__field( unsigned int, nr_sector )
__field( unsigned int, bytes )
__array( char, rwbs, 6 )
- __array( char, comm, TASK_COMM_LEN )
+ __array( char, comm, TASK_COMM_LEN )
__dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
),
@@ -108,68 +95,18 @@ TRACE_EVENT(block_rq_issue,
__entry->nr_sector, __entry->comm)
);
-TRACE_EVENT(block_rq_requeue,
+DEFINE_EVENT(block_rq, block_rq_insert,
TP_PROTO(struct request_queue *q, struct request *rq),
- TP_ARGS(q, rq),
-
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( sector_t, sector )
- __field( unsigned int, nr_sector )
- __field( int, errors )
- __array( char, rwbs, 6 )
- __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
- ),
-
- TP_fast_assign(
- __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
- __entry->sector = blk_pc_request(rq) ? 0 : blk_rq_pos(rq);
- __entry->nr_sector = blk_pc_request(rq) ? 0 : blk_rq_sectors(rq);
- __entry->errors = rq->errors;
-
- blk_fill_rwbs_rq(__entry->rwbs, rq);
- blk_dump_cmd(__get_str(cmd), rq);
- ),
-
- TP_printk("%d,%d %s (%s) %llu + %u [%d]",
- MAJOR(__entry->dev), MINOR(__entry->dev),
- __entry->rwbs, __get_str(cmd),
- (unsigned long long)__entry->sector,
- __entry->nr_sector, __entry->errors)
+ TP_ARGS(q, rq)
);
-TRACE_EVENT(block_rq_complete,
+DEFINE_EVENT(block_rq, block_rq_issue,
TP_PROTO(struct request_queue *q, struct request *rq),
- TP_ARGS(q, rq),
-
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( sector_t, sector )
- __field( unsigned int, nr_sector )
- __field( int, errors )
- __array( char, rwbs, 6 )
- __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
- ),
-
- TP_fast_assign(
- __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
- __entry->sector = blk_pc_request(rq) ? 0 : blk_rq_pos(rq);
- __entry->nr_sector = blk_pc_request(rq) ? 0 : blk_rq_sectors(rq);
- __entry->errors = rq->errors;
-
- blk_fill_rwbs_rq(__entry->rwbs, rq);
- blk_dump_cmd(__get_str(cmd), rq);
- ),
-
- TP_printk("%d,%d %s (%s) %llu + %u [%d]",
- MAJOR(__entry->dev), MINOR(__entry->dev),
- __entry->rwbs, __get_str(cmd),
- (unsigned long long)__entry->sector,
- __entry->nr_sector, __entry->errors)
+ TP_ARGS(q, rq)
);
TRACE_EVENT(block_bio_bounce,
@@ -228,7 +165,7 @@ TRACE_EVENT(block_bio_complete,
__entry->nr_sector, __entry->error)
);
-TRACE_EVENT(block_bio_backmerge,
+DECLARE_EVENT_CLASS(block_bio,
TP_PROTO(struct request_queue *q, struct bio *bio),
@@ -256,63 +193,28 @@ TRACE_EVENT(block_bio_backmerge,
__entry->nr_sector, __entry->comm)
);
-TRACE_EVENT(block_bio_frontmerge,
+DEFINE_EVENT(block_bio, block_bio_backmerge,
TP_PROTO(struct request_queue *q, struct bio *bio),
- TP_ARGS(q, bio),
-
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( sector_t, sector )
- __field( unsigned, nr_sector )
- __array( char, rwbs, 6 )
- __array( char, comm, TASK_COMM_LEN )
- ),
-
- TP_fast_assign(
- __entry->dev = bio->bi_bdev->bd_dev;
- __entry->sector = bio->bi_sector;
- __entry->nr_sector = bio->bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
- memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
- ),
-
- TP_printk("%d,%d %s %llu + %u [%s]",
- MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
- (unsigned long long)__entry->sector,
- __entry->nr_sector, __entry->comm)
+ TP_ARGS(q, bio)
);
-TRACE_EVENT(block_bio_queue,
+DEFINE_EVENT(block_bio, block_bio_frontmerge,
TP_PROTO(struct request_queue *q, struct bio *bio),
- TP_ARGS(q, bio),
+ TP_ARGS(q, bio)
+);
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( sector_t, sector )
- __field( unsigned int, nr_sector )
- __array( char, rwbs, 6 )
- __array( char, comm, TASK_COMM_LEN )
- ),
+DEFINE_EVENT(block_bio, block_bio_queue,
- TP_fast_assign(
- __entry->dev = bio->bi_bdev->bd_dev;
- __entry->sector = bio->bi_sector;
- __entry->nr_sector = bio->bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
- memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
- ),
+ TP_PROTO(struct request_queue *q, struct bio *bio),
- TP_printk("%d,%d %s %llu + %u [%s]",
- MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
- (unsigned long long)__entry->sector,
- __entry->nr_sector, __entry->comm)
+ TP_ARGS(q, bio)
);
-TRACE_EVENT(block_getrq,
+DECLARE_EVENT_CLASS(block_get_rq,
TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
@@ -341,33 +243,18 @@ TRACE_EVENT(block_getrq,
__entry->nr_sector, __entry->comm)
);
-TRACE_EVENT(block_sleeprq,
+DEFINE_EVENT(block_get_rq, block_getrq,
TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
- TP_ARGS(q, bio, rw),
+ TP_ARGS(q, bio, rw)
+);
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( sector_t, sector )
- __field( unsigned int, nr_sector )
- __array( char, rwbs, 6 )
- __array( char, comm, TASK_COMM_LEN )
- ),
+DEFINE_EVENT(block_get_rq, block_sleeprq,
- TP_fast_assign(
- __entry->dev = bio ? bio->bi_bdev->bd_dev : 0;
- __entry->sector = bio ? bio->bi_sector : 0;
- __entry->nr_sector = bio ? bio->bi_size >> 9 : 0;
- blk_fill_rwbs(__entry->rwbs,
- bio ? bio->bi_rw : 0, __entry->nr_sector);
- memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
- ),
+ TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
- TP_printk("%d,%d %s %llu + %u [%s]",
- MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
- (unsigned long long)__entry->sector,
- __entry->nr_sector, __entry->comm)
+ TP_ARGS(q, bio, rw)
);
TRACE_EVENT(block_plug,
@@ -387,7 +274,7 @@ TRACE_EVENT(block_plug,
TP_printk("[%s]", __entry->comm)
);
-TRACE_EVENT(block_unplug_timer,
+DECLARE_EVENT_CLASS(block_unplug,
TP_PROTO(struct request_queue *q),
@@ -406,23 +293,18 @@ TRACE_EVENT(block_unplug_timer,
TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
);
-TRACE_EVENT(block_unplug_io,
+DEFINE_EVENT(block_unplug, block_unplug_timer,
TP_PROTO(struct request_queue *q),
- TP_ARGS(q),
+ TP_ARGS(q)
+);
- TP_STRUCT__entry(
- __field( int, nr_rq )
- __array( char, comm, TASK_COMM_LEN )
- ),
+DEFINE_EVENT(block_unplug, block_unplug_io,
- TP_fast_assign(
- __entry->nr_rq = q->rq.count[READ] + q->rq.count[WRITE];
- memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
- ),
+ TP_PROTO(struct request_queue *q),
- TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
+ TP_ARGS(q)
);
TRACE_EVENT(block_split,
diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index d09550bf3f951ec4a9230f9156a5fd29190b9e13..318f76535bd44c888d2a1045f0f4a520d3c5799a 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h
@@ -90,7 +90,7 @@ TRACE_EVENT(ext4_allocate_inode,
(unsigned long) __entry->dir, __entry->mode)
);
-TRACE_EVENT(ext4_write_begin,
+DECLARE_EVENT_CLASS(ext4__write_begin,
TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
unsigned int flags),
@@ -118,7 +118,23 @@ TRACE_EVENT(ext4_write_begin,
__entry->pos, __entry->len, __entry->flags)
);
-TRACE_EVENT(ext4_ordered_write_end,
+DEFINE_EVENT(ext4__write_begin, ext4_write_begin,
+
+ TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
+ unsigned int flags),
+
+ TP_ARGS(inode, pos, len, flags)
+);
+
+DEFINE_EVENT(ext4__write_begin, ext4_da_write_begin,
+
+ TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
+ unsigned int flags),
+
+ TP_ARGS(inode, pos, len, flags)
+);
+
+DECLARE_EVENT_CLASS(ext4__write_end,
TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
unsigned int copied),
@@ -145,57 +161,36 @@ TRACE_EVENT(ext4_ordered_write_end,
__entry->pos, __entry->len, __entry->copied)
);
-TRACE_EVENT(ext4_writeback_write_end,
+DEFINE_EVENT(ext4__write_end, ext4_ordered_write_end,
+
TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
unsigned int copied),
- TP_ARGS(inode, pos, len, copied),
+ TP_ARGS(inode, pos, len, copied)
+);
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( ino_t, ino )
- __field( loff_t, pos )
- __field( unsigned int, len )
- __field( unsigned int, copied )
- ),
+DEFINE_EVENT(ext4__write_end, ext4_writeback_write_end,
- TP_fast_assign(
- __entry->dev = inode->i_sb->s_dev;
- __entry->ino = inode->i_ino;
- __entry->pos = pos;
- __entry->len = len;
- __entry->copied = copied;
- ),
+ TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
+ unsigned int copied),
- TP_printk("dev %s ino %lu pos %llu len %u copied %u",
- jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
- __entry->pos, __entry->len, __entry->copied)
+ TP_ARGS(inode, pos, len, copied)
);
-TRACE_EVENT(ext4_journalled_write_end,
+DEFINE_EVENT(ext4__write_end, ext4_journalled_write_end,
+
TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
unsigned int copied),
- TP_ARGS(inode, pos, len, copied),
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( ino_t, ino )
- __field( loff_t, pos )
- __field( unsigned int, len )
- __field( unsigned int, copied )
- ),
+ TP_ARGS(inode, pos, len, copied)
+);
- TP_fast_assign(
- __entry->dev = inode->i_sb->s_dev;
- __entry->ino = inode->i_ino;
- __entry->pos = pos;
- __entry->len = len;
- __entry->copied = copied;
- ),
+DEFINE_EVENT(ext4__write_end, ext4_da_write_end,
- TP_printk("dev %s ino %lu pos %llu len %u copied %u",
- jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
- __entry->pos, __entry->len, __entry->copied)
+ TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
+ unsigned int copied),
+
+ TP_ARGS(inode, pos, len, copied)
);
TRACE_EVENT(ext4_writepage,
@@ -337,60 +332,6 @@ TRACE_EVENT(ext4_da_writepages_result,
(unsigned long) __entry->writeback_index)
);
-TRACE_EVENT(ext4_da_write_begin,
- TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
- unsigned int flags),
-
- TP_ARGS(inode, pos, len, flags),
-
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( ino_t, ino )
- __field( loff_t, pos )
- __field( unsigned int, len )
- __field( unsigned int, flags )
- ),
-
- TP_fast_assign(
- __entry->dev = inode->i_sb->s_dev;
- __entry->ino = inode->i_ino;
- __entry->pos = pos;
- __entry->len = len;
- __entry->flags = flags;
- ),
-
- TP_printk("dev %s ino %lu pos %llu len %u flags %u",
- jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
- __entry->pos, __entry->len, __entry->flags)
-);
-
-TRACE_EVENT(ext4_da_write_end,
- TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
- unsigned int copied),
-
- TP_ARGS(inode, pos, len, copied),
-
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( ino_t, ino )
- __field( loff_t, pos )
- __field( unsigned int, len )
- __field( unsigned int, copied )
- ),
-
- TP_fast_assign(
- __entry->dev = inode->i_sb->s_dev;
- __entry->ino = inode->i_ino;
- __entry->pos = pos;
- __entry->len = len;
- __entry->copied = copied;
- ),
-
- TP_printk("dev %s ino %lu pos %llu len %u copied %u",
- jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
- __entry->pos, __entry->len, __entry->copied)
-);
-
TRACE_EVENT(ext4_discard_blocks,
TP_PROTO(struct super_block *sb, unsigned long long blk,
unsigned long long count),
diff --git a/include/trace/events/irq.h b/include/trace/events/irq.h
index b89f9db4a404eaeb1800d2424eae5bd6e26387d4..0e4cfb694fe70630457af67e1b1bc568f56c9b09 100644
--- a/include/trace/events/irq.h
+++ b/include/trace/events/irq.h
@@ -48,7 +48,7 @@ TRACE_EVENT(irq_handler_entry,
__assign_str(name, action->name);
),
- TP_printk("irq=%d handler=%s", __entry->irq, __get_str(name))
+ TP_printk("irq=%d name=%s", __entry->irq, __get_str(name))
);
/**
@@ -78,22 +78,11 @@ TRACE_EVENT(irq_handler_exit,
__entry->ret = ret;
),
- TP_printk("irq=%d return=%s",
+ TP_printk("irq=%d ret=%s",
__entry->irq, __entry->ret ? "handled" : "unhandled")
);
-/**
- * softirq_entry - called immediately before the softirq handler
- * @h: pointer to struct softirq_action
- * @vec: pointer to first struct softirq_action in softirq_vec array
- *
- * The @h parameter, contains a pointer to the struct softirq_action
- * which has a pointer to the action handler that is called. By subtracting
- * the @vec pointer from the @h pointer, we can determine the softirq
- * number. Also, when used in combination with the softirq_exit tracepoint
- * we can determine the softirq latency.
- */
-TRACE_EVENT(softirq_entry,
+DECLARE_EVENT_CLASS(softirq,
TP_PROTO(struct softirq_action *h, struct softirq_action *vec),
@@ -107,10 +96,28 @@ TRACE_EVENT(softirq_entry,
__entry->vec = (int)(h - vec);
),
- TP_printk("softirq=%d action=%s", __entry->vec,
+ TP_printk("vec=%d [action=%s]", __entry->vec,
show_softirq_name(__entry->vec))
);
+/**
+ * softirq_entry - called immediately before the softirq handler
+ * @h: pointer to struct softirq_action
+ * @vec: pointer to first struct softirq_action in softirq_vec array
+ *
+ * The @h parameter, contains a pointer to the struct softirq_action
+ * which has a pointer to the action handler that is called. By subtracting
+ * the @vec pointer from the @h pointer, we can determine the softirq
+ * number. Also, when used in combination with the softirq_exit tracepoint
+ * we can determine the softirq latency.
+ */
+DEFINE_EVENT(softirq, softirq_entry,
+
+ TP_PROTO(struct softirq_action *h, struct softirq_action *vec),
+
+ TP_ARGS(h, vec)
+);
+
/**
* softirq_exit - called immediately after the softirq handler returns
* @h: pointer to struct softirq_action
@@ -122,22 +129,11 @@ TRACE_EVENT(softirq_entry,
* combination with the softirq_entry tracepoint we can determine the softirq
* latency.
*/
-TRACE_EVENT(softirq_exit,
+DEFINE_EVENT(softirq, softirq_exit,
TP_PROTO(struct softirq_action *h, struct softirq_action *vec),
- TP_ARGS(h, vec),
-
- TP_STRUCT__entry(
- __field( int, vec )
- ),
-
- TP_fast_assign(
- __entry->vec = (int)(h - vec);
- ),
-
- TP_printk("softirq=%d action=%s", __entry->vec,
- show_softirq_name(__entry->vec))
+ TP_ARGS(h, vec)
);
#endif /* _TRACE_IRQ_H */
diff --git a/include/trace/events/jbd2.h b/include/trace/events/jbd2.h
index 3c60b75adb9e226de91d34cb9c635fbc999a9fa6..96b370a050deb27ca6fe8393990e52734dbbff09 100644
--- a/include/trace/events/jbd2.h
+++ b/include/trace/events/jbd2.h
@@ -30,7 +30,7 @@ TRACE_EVENT(jbd2_checkpoint,
jbd2_dev_to_name(__entry->dev), __entry->result)
);
-TRACE_EVENT(jbd2_start_commit,
+DECLARE_EVENT_CLASS(jbd2_commit,
TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
@@ -53,73 +53,32 @@ TRACE_EVENT(jbd2_start_commit,
__entry->sync_commit)
);
-TRACE_EVENT(jbd2_commit_locking,
+DEFINE_EVENT(jbd2_commit, jbd2_start_commit,
TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
- TP_ARGS(journal, commit_transaction),
-
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( char, sync_commit )
- __field( int, transaction )
- ),
-
- TP_fast_assign(
- __entry->dev = journal->j_fs_dev->bd_dev;
- __entry->sync_commit = commit_transaction->t_synchronous_commit;
- __entry->transaction = commit_transaction->t_tid;
- ),
-
- TP_printk("dev %s transaction %d sync %d",
- jbd2_dev_to_name(__entry->dev), __entry->transaction,
- __entry->sync_commit)
+ TP_ARGS(journal, commit_transaction)
);
-TRACE_EVENT(jbd2_commit_flushing,
+DEFINE_EVENT(jbd2_commit, jbd2_commit_locking,
TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
- TP_ARGS(journal, commit_transaction),
-
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( char, sync_commit )
- __field( int, transaction )
- ),
-
- TP_fast_assign(
- __entry->dev = journal->j_fs_dev->bd_dev;
- __entry->sync_commit = commit_transaction->t_synchronous_commit;
- __entry->transaction = commit_transaction->t_tid;
- ),
-
- TP_printk("dev %s transaction %d sync %d",
- jbd2_dev_to_name(__entry->dev), __entry->transaction,
- __entry->sync_commit)
+ TP_ARGS(journal, commit_transaction)
);
-TRACE_EVENT(jbd2_commit_logging,
+DEFINE_EVENT(jbd2_commit, jbd2_commit_flushing,
TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
- TP_ARGS(journal, commit_transaction),
+ TP_ARGS(journal, commit_transaction)
+);
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( char, sync_commit )
- __field( int, transaction )
- ),
+DEFINE_EVENT(jbd2_commit, jbd2_commit_logging,
- TP_fast_assign(
- __entry->dev = journal->j_fs_dev->bd_dev;
- __entry->sync_commit = commit_transaction->t_synchronous_commit;
- __entry->transaction = commit_transaction->t_tid;
- ),
+ TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
- TP_printk("dev %s transaction %d sync %d",
- jbd2_dev_to_name(__entry->dev), __entry->transaction,
- __entry->sync_commit)
+ TP_ARGS(journal, commit_transaction)
);
TRACE_EVENT(jbd2_end_commit,
diff --git a/include/trace/events/kmem.h b/include/trace/events/kmem.h
index eaf46bdd18a5f81719b21de90fba91d5e64e78ea..3adca0ca9dbee10479d34d5a3e3562609ef89e86 100644
--- a/include/trace/events/kmem.h
+++ b/include/trace/events/kmem.h
@@ -44,7 +44,7 @@
{(unsigned long)__GFP_MOVABLE, "GFP_MOVABLE"} \
) : "GFP_NOWAIT"
-TRACE_EVENT(kmalloc,
+DECLARE_EVENT_CLASS(kmem_alloc,
TP_PROTO(unsigned long call_site,
const void *ptr,
@@ -78,41 +78,23 @@ TRACE_EVENT(kmalloc,
show_gfp_flags(__entry->gfp_flags))
);
-TRACE_EVENT(kmem_cache_alloc,
+DEFINE_EVENT(kmem_alloc, kmalloc,
- TP_PROTO(unsigned long call_site,
- const void *ptr,
- size_t bytes_req,
- size_t bytes_alloc,
- gfp_t gfp_flags),
+ TP_PROTO(unsigned long call_site, const void *ptr,
+ size_t bytes_req, size_t bytes_alloc, gfp_t gfp_flags),
- TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags),
+ TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags)
+);
- TP_STRUCT__entry(
- __field( unsigned long, call_site )
- __field( const void *, ptr )
- __field( size_t, bytes_req )
- __field( size_t, bytes_alloc )
- __field( gfp_t, gfp_flags )
- ),
+DEFINE_EVENT(kmem_alloc, kmem_cache_alloc,
- TP_fast_assign(
- __entry->call_site = call_site;
- __entry->ptr = ptr;
- __entry->bytes_req = bytes_req;
- __entry->bytes_alloc = bytes_alloc;
- __entry->gfp_flags = gfp_flags;
- ),
+ TP_PROTO(unsigned long call_site, const void *ptr,
+ size_t bytes_req, size_t bytes_alloc, gfp_t gfp_flags),
- TP_printk("call_site=%lx ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%s",
- __entry->call_site,
- __entry->ptr,
- __entry->bytes_req,
- __entry->bytes_alloc,
- show_gfp_flags(__entry->gfp_flags))
+ TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags)
);
-TRACE_EVENT(kmalloc_node,
+DECLARE_EVENT_CLASS(kmem_alloc_node,
TP_PROTO(unsigned long call_site,
const void *ptr,
@@ -150,45 +132,25 @@ TRACE_EVENT(kmalloc_node,
__entry->node)
);
-TRACE_EVENT(kmem_cache_alloc_node,
+DEFINE_EVENT(kmem_alloc_node, kmalloc_node,
- TP_PROTO(unsigned long call_site,
- const void *ptr,
- size_t bytes_req,
- size_t bytes_alloc,
- gfp_t gfp_flags,
- int node),
+ TP_PROTO(unsigned long call_site, const void *ptr,
+ size_t bytes_req, size_t bytes_alloc,
+ gfp_t gfp_flags, int node),
- TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags, node),
+ TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags, node)
+);
- TP_STRUCT__entry(
- __field( unsigned long, call_site )
- __field( const void *, ptr )
- __field( size_t, bytes_req )
- __field( size_t, bytes_alloc )
- __field( gfp_t, gfp_flags )
- __field( int, node )
- ),
+DEFINE_EVENT(kmem_alloc_node, kmem_cache_alloc_node,
- TP_fast_assign(
- __entry->call_site = call_site;
- __entry->ptr = ptr;
- __entry->bytes_req = bytes_req;
- __entry->bytes_alloc = bytes_alloc;
- __entry->gfp_flags = gfp_flags;
- __entry->node = node;
- ),
+ TP_PROTO(unsigned long call_site, const void *ptr,
+ size_t bytes_req, size_t bytes_alloc,
+ gfp_t gfp_flags, int node),
- TP_printk("call_site=%lx ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%s node=%d",
- __entry->call_site,
- __entry->ptr,
- __entry->bytes_req,
- __entry->bytes_alloc,
- show_gfp_flags(__entry->gfp_flags),
- __entry->node)
+ TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags, node)
);
-TRACE_EVENT(kfree,
+DECLARE_EVENT_CLASS(kmem_free,
TP_PROTO(unsigned long call_site, const void *ptr),
@@ -207,23 +169,18 @@ TRACE_EVENT(kfree,
TP_printk("call_site=%lx ptr=%p", __entry->call_site, __entry->ptr)
);
-TRACE_EVENT(kmem_cache_free,
+DEFINE_EVENT(kmem_free, kfree,
TP_PROTO(unsigned long call_site, const void *ptr),
- TP_ARGS(call_site, ptr),
+ TP_ARGS(call_site, ptr)
+);
- TP_STRUCT__entry(
- __field( unsigned long, call_site )
- __field( const void *, ptr )
- ),
+DEFINE_EVENT(kmem_free, kmem_cache_free,
- TP_fast_assign(
- __entry->call_site = call_site;
- __entry->ptr = ptr;
- ),
+ TP_PROTO(unsigned long call_site, const void *ptr),
- TP_printk("call_site=%lx ptr=%p", __entry->call_site, __entry->ptr)
+ TP_ARGS(call_site, ptr)
);
TRACE_EVENT(mm_page_free_direct,
@@ -299,7 +256,7 @@ TRACE_EVENT(mm_page_alloc,
show_gfp_flags(__entry->gfp_flags))
);
-TRACE_EVENT(mm_page_alloc_zone_locked,
+DECLARE_EVENT_CLASS(mm_page,
TP_PROTO(struct page *page, unsigned int order, int migratetype),
@@ -325,29 +282,22 @@ TRACE_EVENT(mm_page_alloc_zone_locked,
__entry->order == 0)
);
-TRACE_EVENT(mm_page_pcpu_drain,
+DEFINE_EVENT(mm_page, mm_page_alloc_zone_locked,
- TP_PROTO(struct page *page, int order, int migratetype),
+ TP_PROTO(struct page *page, unsigned int order, int migratetype),
- TP_ARGS(page, order, migratetype),
+ TP_ARGS(page, order, migratetype)
+);
- TP_STRUCT__entry(
- __field( struct page *, page )
- __field( int, order )
- __field( int, migratetype )
- ),
+DEFINE_EVENT_PRINT(mm_page, mm_page_pcpu_drain,
- TP_fast_assign(
- __entry->page = page;
- __entry->order = order;
- __entry->migratetype = migratetype;
- ),
+ TP_PROTO(struct page *page, unsigned int order, int migratetype),
+
+ TP_ARGS(page, order, migratetype),
TP_printk("page=%p pfn=%lu order=%d migratetype=%d",
- __entry->page,
- page_to_pfn(__entry->page),
- __entry->order,
- __entry->migratetype)
+ __entry->page, page_to_pfn(__entry->page),
+ __entry->order, __entry->migratetype)
);
TRACE_EVENT(mm_page_alloc_extfrag,
diff --git a/include/trace/events/lockdep.h b/include/trace/events/lock.h
similarity index 92%
rename from include/trace/events/lockdep.h
rename to include/trace/events/lock.h
index bcf1d209a00dabf7838aae49c2e5edcc5fc6dde8..a870ba125aa87509c6a49c0036e3c801d7159aea 100644
--- a/include/trace/events/lockdep.h
+++ b/include/trace/events/lock.h
@@ -1,8 +1,8 @@
#undef TRACE_SYSTEM
-#define TRACE_SYSTEM lockdep
+#define TRACE_SYSTEM lock
-#if !defined(_TRACE_LOCKDEP_H) || defined(TRACE_HEADER_MULTI_READ)
-#define _TRACE_LOCKDEP_H
+#if !defined(_TRACE_LOCK_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_LOCK_H
#include
#include
@@ -90,7 +90,7 @@ TRACE_EVENT(lock_acquired,
#endif
#endif
-#endif /* _TRACE_LOCKDEP_H */
+#endif /* _TRACE_LOCK_H */
/* This part must be outside protection */
#include
diff --git a/include/trace/events/mce.h b/include/trace/events/mce.h
new file mode 100644
index 0000000000000000000000000000000000000000..7eee77895cb37475837c546a44aac2358f18e687
--- /dev/null
+++ b/include/trace/events/mce.h
@@ -0,0 +1,69 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM mce
+
+#if !defined(_TRACE_MCE_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_MCE_H
+
+#include
+#include
+#include
+
+TRACE_EVENT(mce_record,
+
+ TP_PROTO(struct mce *m),
+
+ TP_ARGS(m),
+
+ TP_STRUCT__entry(
+ __field( u64, mcgcap )
+ __field( u64, mcgstatus )
+ __field( u8, bank )
+ __field( u64, status )
+ __field( u64, addr )
+ __field( u64, misc )
+ __field( u64, ip )
+ __field( u8, cs )
+ __field( u64, tsc )
+ __field( u64, walltime )
+ __field( u32, cpu )
+ __field( u32, cpuid )
+ __field( u32, apicid )
+ __field( u32, socketid )
+ __field( u8, cpuvendor )
+ ),
+
+ TP_fast_assign(
+ __entry->mcgcap = m->mcgcap;
+ __entry->mcgstatus = m->mcgstatus;
+ __entry->bank = m->bank;
+ __entry->status = m->status;
+ __entry->addr = m->addr;
+ __entry->misc = m->misc;
+ __entry->ip = m->ip;
+ __entry->cs = m->cs;
+ __entry->tsc = m->tsc;
+ __entry->walltime = m->time;
+ __entry->cpu = m->extcpu;
+ __entry->cpuid = m->cpuid;
+ __entry->apicid = m->apicid;
+ __entry->socketid = m->socketid;
+ __entry->cpuvendor = m->cpuvendor;
+ ),
+
+ TP_printk("CPU: %d, MCGc/s: %llx/%llx, MC%d: %016Lx, ADDR/MISC: %016Lx/%016Lx, RIP: %02x:<%016Lx>, TSC: %llx, PROCESSOR: %u:%x, TIME: %llu, SOCKET: %u, APIC: %x",
+ __entry->cpu,
+ __entry->mcgcap, __entry->mcgstatus,
+ __entry->bank, __entry->status,
+ __entry->addr, __entry->misc,
+ __entry->cs, __entry->ip,
+ __entry->tsc,
+ __entry->cpuvendor, __entry->cpuid,
+ __entry->walltime,
+ __entry->socketid,
+ __entry->apicid)
+);
+
+#endif /* _TRACE_MCE_H */
+
+/* This part must be outside protection */
+#include
diff --git a/include/trace/events/module.h b/include/trace/events/module.h
index 84160fb18478f99da3ae79bc19bc4da6044d8978..4b0f48ba16a688da9ead5b901604419c7823ea3b 100644
--- a/include/trace/events/module.h
+++ b/include/trace/events/module.h
@@ -51,7 +51,7 @@ TRACE_EVENT(module_free,
TP_printk("%s", __get_str(name))
);
-TRACE_EVENT(module_get,
+DECLARE_EVENT_CLASS(module_refcnt,
TP_PROTO(struct module *mod, unsigned long ip, int refcnt),
@@ -73,26 +73,18 @@ TRACE_EVENT(module_get,
__get_str(name), (void *)__entry->ip, __entry->refcnt)
);
-TRACE_EVENT(module_put,
+DEFINE_EVENT(module_refcnt, module_get,
TP_PROTO(struct module *mod, unsigned long ip, int refcnt),
- TP_ARGS(mod, ip, refcnt),
+ TP_ARGS(mod, ip, refcnt)
+);
- TP_STRUCT__entry(
- __field( unsigned long, ip )
- __field( int, refcnt )
- __string( name, mod->name )
- ),
+DEFINE_EVENT(module_refcnt, module_put,
- TP_fast_assign(
- __entry->ip = ip;
- __entry->refcnt = refcnt;
- __assign_str(name, mod->name);
- ),
+ TP_PROTO(struct module *mod, unsigned long ip, int refcnt),
- TP_printk("%s call_site=%pf refcnt=%d",
- __get_str(name), (void *)__entry->ip, __entry->refcnt)
+ TP_ARGS(mod, ip, refcnt)
);
TRACE_EVENT(module_request,
diff --git a/include/trace/events/power.h b/include/trace/events/power.h
index ea6d579261ad017d3c54c61fcecba118b20cd81f..c4efe9b8280d4f9c4261c24de5f80010f1f445ce 100644
--- a/include/trace/events/power.h
+++ b/include/trace/events/power.h
@@ -16,9 +16,7 @@ enum {
};
#endif
-
-
-TRACE_EVENT(power_start,
+DECLARE_EVENT_CLASS(power,
TP_PROTO(unsigned int type, unsigned int state),
@@ -37,42 +35,36 @@ TRACE_EVENT(power_start,
TP_printk("type=%lu state=%lu", (unsigned long)__entry->type, (unsigned long)__entry->state)
);
-TRACE_EVENT(power_end,
-
- TP_PROTO(int dummy),
+DEFINE_EVENT(power, power_start,
- TP_ARGS(dummy),
+ TP_PROTO(unsigned int type, unsigned int state),
- TP_STRUCT__entry(
- __field( u64, dummy )
- ),
+ TP_ARGS(type, state)
+);
- TP_fast_assign(
- __entry->dummy = 0xffff;
- ),
+DEFINE_EVENT(power, power_frequency,
- TP_printk("dummy=%lu", (unsigned long)__entry->dummy)
+ TP_PROTO(unsigned int type, unsigned int state),
+ TP_ARGS(type, state)
);
+TRACE_EVENT(power_end,
-TRACE_EVENT(power_frequency,
-
- TP_PROTO(unsigned int type, unsigned int state),
+ TP_PROTO(int dummy),
- TP_ARGS(type, state),
+ TP_ARGS(dummy),
TP_STRUCT__entry(
- __field( u64, type )
- __field( u64, state )
+ __field( u64, dummy )
),
TP_fast_assign(
- __entry->type = type;
- __entry->state = state;
+ __entry->dummy = 0xffff;
),
- TP_printk("type=%lu state=%lu", (unsigned long)__entry->type, (unsigned long) __entry->state)
+ TP_printk("dummy=%lu", (unsigned long)__entry->dummy)
+
);
#endif /* _TRACE_POWER_H */
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index 4069c43f4187e522a65435a65f3888fff39a707e..cfceb0b73e205bb936a6e3fcfeb34f5515ab0feb 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -26,7 +26,7 @@ TRACE_EVENT(sched_kthread_stop,
__entry->pid = t->pid;
),
- TP_printk("task %s:%d", __entry->comm, __entry->pid)
+ TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
);
/*
@@ -46,7 +46,7 @@ TRACE_EVENT(sched_kthread_stop_ret,
__entry->ret = ret;
),
- TP_printk("ret %d", __entry->ret)
+ TP_printk("ret=%d", __entry->ret)
);
/*
@@ -73,7 +73,7 @@ TRACE_EVENT(sched_wait_task,
__entry->prio = p->prio;
),
- TP_printk("task %s:%d [%d]",
+ TP_printk("comm=%s pid=%d prio=%d",
__entry->comm, __entry->pid, __entry->prio)
);
@@ -83,7 +83,7 @@ TRACE_EVENT(sched_wait_task,
* (NOTE: the 'rq' argument is not used by generic trace events,
* but used by the latency tracer plugin. )
*/
-TRACE_EVENT(sched_wakeup,
+DECLARE_EVENT_CLASS(sched_wakeup_template,
TP_PROTO(struct rq *rq, struct task_struct *p, int success),
@@ -94,7 +94,7 @@ TRACE_EVENT(sched_wakeup,
__field( pid_t, pid )
__field( int, prio )
__field( int, success )
- __field( int, cpu )
+ __field( int, target_cpu )
),
TP_fast_assign(
@@ -102,46 +102,27 @@ TRACE_EVENT(sched_wakeup,
__entry->pid = p->pid;
__entry->prio = p->prio;
__entry->success = success;
- __entry->cpu = task_cpu(p);
+ __entry->target_cpu = task_cpu(p);
),
- TP_printk("task %s:%d [%d] success=%d [%03d]",
+ TP_printk("comm=%s pid=%d prio=%d success=%d target_cpu=%03d",
__entry->comm, __entry->pid, __entry->prio,
- __entry->success, __entry->cpu)
+ __entry->success, __entry->target_cpu)
);
+DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
+ TP_PROTO(struct rq *rq, struct task_struct *p, int success),
+ TP_ARGS(rq, p, success));
+
/*
* Tracepoint for waking up a new task:
*
* (NOTE: the 'rq' argument is not used by generic trace events,
* but used by the latency tracer plugin. )
*/
-TRACE_EVENT(sched_wakeup_new,
-
- TP_PROTO(struct rq *rq, struct task_struct *p, int success),
-
- TP_ARGS(rq, p, success),
-
- TP_STRUCT__entry(
- __array( char, comm, TASK_COMM_LEN )
- __field( pid_t, pid )
- __field( int, prio )
- __field( int, success )
- __field( int, cpu )
- ),
-
- TP_fast_assign(
- memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
- __entry->pid = p->pid;
- __entry->prio = p->prio;
- __entry->success = success;
- __entry->cpu = task_cpu(p);
- ),
-
- TP_printk("task %s:%d [%d] success=%d [%03d]",
- __entry->comm, __entry->pid, __entry->prio,
- __entry->success, __entry->cpu)
-);
+DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
+ TP_PROTO(struct rq *rq, struct task_struct *p, int success),
+ TP_ARGS(rq, p, success));
/*
* Tracepoint for task switches, performed by the scheduler:
@@ -176,7 +157,7 @@ TRACE_EVENT(sched_switch,
__entry->next_prio = next->prio;
),
- TP_printk("task %s:%d [%d] (%s) ==> %s:%d [%d]",
+ TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s ==> next_comm=%s next_pid=%d next_prio=%d",
__entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
__entry->prev_state ?
__print_flags(__entry->prev_state, "|",
@@ -211,15 +192,12 @@ TRACE_EVENT(sched_migrate_task,
__entry->dest_cpu = dest_cpu;
),
- TP_printk("task %s:%d [%d] from: %d to: %d",
+ TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d",
__entry->comm, __entry->pid, __entry->prio,
__entry->orig_cpu, __entry->dest_cpu)
);
-/*
- * Tracepoint for freeing a task:
- */
-TRACE_EVENT(sched_process_free,
+DECLARE_EVENT_CLASS(sched_process_template,
TP_PROTO(struct task_struct *p),
@@ -237,34 +215,24 @@ TRACE_EVENT(sched_process_free,
__entry->prio = p->prio;
),
- TP_printk("task %s:%d [%d]",
+ TP_printk("comm=%s pid=%d prio=%d",
__entry->comm, __entry->pid, __entry->prio)
);
/*
- * Tracepoint for a task exiting:
+ * Tracepoint for freeing a task:
*/
-TRACE_EVENT(sched_process_exit,
+DEFINE_EVENT(sched_process_template, sched_process_free,
+ TP_PROTO(struct task_struct *p),
+ TP_ARGS(p));
+
- TP_PROTO(struct task_struct *p),
-
- TP_ARGS(p),
-
- TP_STRUCT__entry(
- __array( char, comm, TASK_COMM_LEN )
- __field( pid_t, pid )
- __field( int, prio )
- ),
-
- TP_fast_assign(
- memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
- __entry->pid = p->pid;
- __entry->prio = p->prio;
- ),
-
- TP_printk("task %s:%d [%d]",
- __entry->comm, __entry->pid, __entry->prio)
-);
+/*
+ * Tracepoint for a task exiting:
+ */
+DEFINE_EVENT(sched_process_template, sched_process_exit,
+ TP_PROTO(struct task_struct *p),
+ TP_ARGS(p));
/*
* Tracepoint for a waiting task:
@@ -287,7 +255,7 @@ TRACE_EVENT(sched_process_wait,
__entry->prio = current->prio;
),
- TP_printk("task %s:%d [%d]",
+ TP_printk("comm=%s pid=%d prio=%d",
__entry->comm, __entry->pid, __entry->prio)
);
@@ -314,46 +282,16 @@ TRACE_EVENT(sched_process_fork,
__entry->child_pid = child->pid;
),
- TP_printk("parent %s:%d child %s:%d",
+ TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d",
__entry->parent_comm, __entry->parent_pid,
__entry->child_comm, __entry->child_pid)
);
-/*
- * Tracepoint for sending a signal:
- */
-TRACE_EVENT(sched_signal_send,
-
- TP_PROTO(int sig, struct task_struct *p),
-
- TP_ARGS(sig, p),
-
- TP_STRUCT__entry(
- __field( int, sig )
- __array( char, comm, TASK_COMM_LEN )
- __field( pid_t, pid )
- ),
-
- TP_fast_assign(
- memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
- __entry->pid = p->pid;
- __entry->sig = sig;
- ),
-
- TP_printk("sig: %d task %s:%d",
- __entry->sig, __entry->comm, __entry->pid)
-);
-
/*
* XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
* adding sched_stat support to SCHED_FIFO/RR would be welcome.
*/
-
-/*
- * Tracepoint for accounting wait time (time the task is runnable
- * but not actually running due to scheduler contention).
- */
-TRACE_EVENT(sched_stat_wait,
+DECLARE_EVENT_CLASS(sched_stat_template,
TP_PROTO(struct task_struct *tsk, u64 delay),
@@ -374,11 +312,36 @@ TRACE_EVENT(sched_stat_wait,
__perf_count(delay);
),
- TP_printk("task: %s:%d wait: %Lu [ns]",
+ TP_printk("comm=%s pid=%d delay=%Lu [ns]",
__entry->comm, __entry->pid,
(unsigned long long)__entry->delay)
);
+
+/*
+ * Tracepoint for accounting wait time (time the task is runnable
+ * but not actually running due to scheduler contention).
+ */
+DEFINE_EVENT(sched_stat_template, sched_stat_wait,
+ TP_PROTO(struct task_struct *tsk, u64 delay),
+ TP_ARGS(tsk, delay));
+
+/*
+ * Tracepoint for accounting sleep time (time the task is not runnable,
+ * including iowait, see below).
+ */
+DEFINE_EVENT(sched_stat_template, sched_stat_sleep,
+ TP_PROTO(struct task_struct *tsk, u64 delay),
+ TP_ARGS(tsk, delay));
+
+/*
+ * Tracepoint for accounting iowait time (time the task is not runnable
+ * due to waiting on IO to complete).
+ */
+DEFINE_EVENT(sched_stat_template, sched_stat_iowait,
+ TP_PROTO(struct task_struct *tsk, u64 delay),
+ TP_ARGS(tsk, delay));
+
/*
* Tracepoint for accounting runtime (time the task is executing
* on a CPU).
@@ -406,72 +369,12 @@ TRACE_EVENT(sched_stat_runtime,
__perf_count(runtime);
),
- TP_printk("task: %s:%d runtime: %Lu [ns], vruntime: %Lu [ns]",
+ TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
__entry->comm, __entry->pid,
(unsigned long long)__entry->runtime,
(unsigned long long)__entry->vruntime)
);
-/*
- * Tracepoint for accounting sleep time (time the task is not runnable,
- * including iowait, see below).
- */
-TRACE_EVENT(sched_stat_sleep,
-
- TP_PROTO(struct task_struct *tsk, u64 delay),
-
- TP_ARGS(tsk, delay),
-
- TP_STRUCT__entry(
- __array( char, comm, TASK_COMM_LEN )
- __field( pid_t, pid )
- __field( u64, delay )
- ),
-
- TP_fast_assign(
- memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
- __entry->pid = tsk->pid;
- __entry->delay = delay;
- )
- TP_perf_assign(
- __perf_count(delay);
- ),
-
- TP_printk("task: %s:%d sleep: %Lu [ns]",
- __entry->comm, __entry->pid,
- (unsigned long long)__entry->delay)
-);
-
-/*
- * Tracepoint for accounting iowait time (time the task is not runnable
- * due to waiting on IO to complete).
- */
-TRACE_EVENT(sched_stat_iowait,
-
- TP_PROTO(struct task_struct *tsk, u64 delay),
-
- TP_ARGS(tsk, delay),
-
- TP_STRUCT__entry(
- __array( char, comm, TASK_COMM_LEN )
- __field( pid_t, pid )
- __field( u64, delay )
- ),
-
- TP_fast_assign(
- memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
- __entry->pid = tsk->pid;
- __entry->delay = delay;
- )
- TP_perf_assign(
- __perf_count(delay);
- ),
-
- TP_printk("task: %s:%d iowait: %Lu [ns]",
- __entry->comm, __entry->pid,
- (unsigned long long)__entry->delay)
-);
-
#endif /* _TRACE_SCHED_H */
/* This part must be outside protection */
diff --git a/include/trace/events/signal.h b/include/trace/events/signal.h
new file mode 100644
index 0000000000000000000000000000000000000000..a510b75ac304505dbd8771b2b0ffcd101c397c90
--- /dev/null
+++ b/include/trace/events/signal.h
@@ -0,0 +1,173 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM signal
+
+#if !defined(_TRACE_SIGNAL_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_SIGNAL_H
+
+#include
+#include
+#include
+
+#define TP_STORE_SIGINFO(__entry, info) \
+ do { \
+ if (info == SEND_SIG_NOINFO) { \
+ __entry->errno = 0; \
+ __entry->code = SI_USER; \
+ } else if (info == SEND_SIG_PRIV) { \
+ __entry->errno = 0; \
+ __entry->code = SI_KERNEL; \
+ } else { \
+ __entry->errno = info->si_errno; \
+ __entry->code = info->si_code; \
+ } \
+ } while (0)
+
+/**
+ * signal_generate - called when a signal is generated
+ * @sig: signal number
+ * @info: pointer to struct siginfo
+ * @task: pointer to struct task_struct
+ *
+ * Current process sends a 'sig' signal to 'task' process with
+ * 'info' siginfo. If 'info' is SEND_SIG_NOINFO or SEND_SIG_PRIV,
+ * 'info' is not a pointer and you can't access its field. Instead,
+ * SEND_SIG_NOINFO means that si_code is SI_USER, and SEND_SIG_PRIV
+ * means that si_code is SI_KERNEL.
+ */
+TRACE_EVENT(signal_generate,
+
+ TP_PROTO(int sig, struct siginfo *info, struct task_struct *task),
+
+ TP_ARGS(sig, info, task),
+
+ TP_STRUCT__entry(
+ __field( int, sig )
+ __field( int, errno )
+ __field( int, code )
+ __array( char, comm, TASK_COMM_LEN )
+ __field( pid_t, pid )
+ ),
+
+ TP_fast_assign(
+ __entry->sig = sig;
+ TP_STORE_SIGINFO(__entry, info);
+ memcpy(__entry->comm, task->comm, TASK_COMM_LEN);
+ __entry->pid = task->pid;
+ ),
+
+ TP_printk("sig=%d errno=%d code=%d comm=%s pid=%d",
+ __entry->sig, __entry->errno, __entry->code,
+ __entry->comm, __entry->pid)
+);
+
+/**
+ * signal_deliver - called when a signal is delivered
+ * @sig: signal number
+ * @info: pointer to struct siginfo
+ * @ka: pointer to struct k_sigaction
+ *
+ * A 'sig' signal is delivered to current process with 'info' siginfo,
+ * and it will be handled by 'ka'. ka->sa.sa_handler can be SIG_IGN or
+ * SIG_DFL.
+ * Note that some signals reported by signal_generate tracepoint can be
+ * lost, ignored or modified (by debugger) before hitting this tracepoint.
+ * This means, this can show which signals are actually delivered, but
+ * matching generated signals and delivered signals may not be correct.
+ */
+TRACE_EVENT(signal_deliver,
+
+ TP_PROTO(int sig, struct siginfo *info, struct k_sigaction *ka),
+
+ TP_ARGS(sig, info, ka),
+
+ TP_STRUCT__entry(
+ __field( int, sig )
+ __field( int, errno )
+ __field( int, code )
+ __field( unsigned long, sa_handler )
+ __field( unsigned long, sa_flags )
+ ),
+
+ TP_fast_assign(
+ __entry->sig = sig;
+ TP_STORE_SIGINFO(__entry, info);
+ __entry->sa_handler = (unsigned long)ka->sa.sa_handler;
+ __entry->sa_flags = ka->sa.sa_flags;
+ ),
+
+ TP_printk("sig=%d errno=%d code=%d sa_handler=%lx sa_flags=%lx",
+ __entry->sig, __entry->errno, __entry->code,
+ __entry->sa_handler, __entry->sa_flags)
+);
+
+/**
+ * signal_overflow_fail - called when signal queue is overflow
+ * @sig: signal number
+ * @group: signal to process group or not (bool)
+ * @info: pointer to struct siginfo
+ *
+ * Kernel fails to generate 'sig' signal with 'info' siginfo, because
+ * siginfo queue is overflow, and the signal is dropped.
+ * 'group' is not 0 if the signal will be sent to a process group.
+ * 'sig' is always one of RT signals.
+ */
+TRACE_EVENT(signal_overflow_fail,
+
+ TP_PROTO(int sig, int group, struct siginfo *info),
+
+ TP_ARGS(sig, group, info),
+
+ TP_STRUCT__entry(
+ __field( int, sig )
+ __field( int, group )
+ __field( int, errno )
+ __field( int, code )
+ ),
+
+ TP_fast_assign(
+ __entry->sig = sig;
+ __entry->group = group;
+ TP_STORE_SIGINFO(__entry, info);
+ ),
+
+ TP_printk("sig=%d group=%d errno=%d code=%d",
+ __entry->sig, __entry->group, __entry->errno, __entry->code)
+);
+
+/**
+ * signal_lose_info - called when siginfo is lost
+ * @sig: signal number
+ * @group: signal to process group or not (bool)
+ * @info: pointer to struct siginfo
+ *
+ * Kernel generates 'sig' signal but loses 'info' siginfo, because siginfo
+ * queue is overflow.
+ * 'group' is not 0 if the signal will be sent to a process group.
+ * 'sig' is always one of non-RT signals.
+ */
+TRACE_EVENT(signal_lose_info,
+
+ TP_PROTO(int sig, int group, struct siginfo *info),
+
+ TP_ARGS(sig, group, info),
+
+ TP_STRUCT__entry(
+ __field( int, sig )
+ __field( int, group )
+ __field( int, errno )
+ __field( int, code )
+ ),
+
+ TP_fast_assign(
+ __entry->sig = sig;
+ __entry->group = group;
+ TP_STORE_SIGINFO(__entry, info);
+ ),
+
+ TP_printk("sig=%d group=%d errno=%d code=%d",
+ __entry->sig, __entry->group, __entry->errno, __entry->code)
+);
+#endif /* _TRACE_SIGNAL_H */
+
+/* This part must be outside protection */
+#include
diff --git a/include/trace/events/timer.h b/include/trace/events/timer.h
index 1844c48d640e3477edf791868e4e72248f7e3381..e5ce87a0498da94355af6e0cfdda0bb88e843cec 100644
--- a/include/trace/events/timer.h
+++ b/include/trace/events/timer.h
@@ -26,7 +26,7 @@ TRACE_EVENT(timer_init,
__entry->timer = timer;
),
- TP_printk("timer %p", __entry->timer)
+ TP_printk("timer=%p", __entry->timer)
);
/**
@@ -54,7 +54,7 @@ TRACE_EVENT(timer_start,
__entry->now = jiffies;
),
- TP_printk("timer %p: func %pf, expires %lu, timeout %ld",
+ TP_printk("timer=%p function=%pf expires=%lu [timeout=%ld]",
__entry->timer, __entry->function, __entry->expires,
(long)__entry->expires - __entry->now)
);
@@ -81,7 +81,7 @@ TRACE_EVENT(timer_expire_entry,
__entry->now = jiffies;
),
- TP_printk("timer %p: now %lu", __entry->timer, __entry->now)
+ TP_printk("timer=%p now=%lu", __entry->timer, __entry->now)
);
/**
@@ -108,7 +108,7 @@ TRACE_EVENT(timer_expire_exit,
__entry->timer = timer;
),
- TP_printk("timer %p", __entry->timer)
+ TP_printk("timer=%p", __entry->timer)
);
/**
@@ -129,7 +129,7 @@ TRACE_EVENT(timer_cancel,
__entry->timer = timer;
),
- TP_printk("timer %p", __entry->timer)
+ TP_printk("timer=%p", __entry->timer)
);
/**
@@ -140,24 +140,24 @@ TRACE_EVENT(timer_cancel,
*/
TRACE_EVENT(hrtimer_init,
- TP_PROTO(struct hrtimer *timer, clockid_t clockid,
+ TP_PROTO(struct hrtimer *hrtimer, clockid_t clockid,
enum hrtimer_mode mode),
- TP_ARGS(timer, clockid, mode),
+ TP_ARGS(hrtimer, clockid, mode),
TP_STRUCT__entry(
- __field( void *, timer )
+ __field( void *, hrtimer )
__field( clockid_t, clockid )
__field( enum hrtimer_mode, mode )
),
TP_fast_assign(
- __entry->timer = timer;
+ __entry->hrtimer = hrtimer;
__entry->clockid = clockid;
__entry->mode = mode;
),
- TP_printk("hrtimer %p, clockid %s, mode %s", __entry->timer,
+ TP_printk("hrtimer=%p clockid=%s mode=%s", __entry->hrtimer,
__entry->clockid == CLOCK_REALTIME ?
"CLOCK_REALTIME" : "CLOCK_MONOTONIC",
__entry->mode == HRTIMER_MODE_ABS ?
@@ -170,26 +170,26 @@ TRACE_EVENT(hrtimer_init,
*/
TRACE_EVENT(hrtimer_start,
- TP_PROTO(struct hrtimer *timer),
+ TP_PROTO(struct hrtimer *hrtimer),
- TP_ARGS(timer),
+ TP_ARGS(hrtimer),
TP_STRUCT__entry(
- __field( void *, timer )
+ __field( void *, hrtimer )
__field( void *, function )
__field( s64, expires )
__field( s64, softexpires )
),
TP_fast_assign(
- __entry->timer = timer;
- __entry->function = timer->function;
- __entry->expires = hrtimer_get_expires(timer).tv64;
- __entry->softexpires = hrtimer_get_softexpires(timer).tv64;
+ __entry->hrtimer = hrtimer;
+ __entry->function = hrtimer->function;
+ __entry->expires = hrtimer_get_expires(hrtimer).tv64;
+ __entry->softexpires = hrtimer_get_softexpires(hrtimer).tv64;
),
- TP_printk("hrtimer %p, func %pf, expires %llu, softexpires %llu",
- __entry->timer, __entry->function,
+ TP_printk("hrtimer=%p function=%pf expires=%llu softexpires=%llu",
+ __entry->hrtimer, __entry->function,
(unsigned long long)ktime_to_ns((ktime_t) {
.tv64 = __entry->expires }),
(unsigned long long)ktime_to_ns((ktime_t) {
@@ -206,23 +206,22 @@ TRACE_EVENT(hrtimer_start,
*/
TRACE_EVENT(hrtimer_expire_entry,
- TP_PROTO(struct hrtimer *timer, ktime_t *now),
+ TP_PROTO(struct hrtimer *hrtimer, ktime_t *now),
- TP_ARGS(timer, now),
+ TP_ARGS(hrtimer, now),
TP_STRUCT__entry(
- __field( void *, timer )
+ __field( void *, hrtimer )
__field( s64, now )
),
TP_fast_assign(
- __entry->timer = timer;
- __entry->now = now->tv64;
+ __entry->hrtimer = hrtimer;
+ __entry->now = now->tv64;
),
- TP_printk("hrtimer %p, now %llu", __entry->timer,
- (unsigned long long)ktime_to_ns((ktime_t) {
- .tv64 = __entry->now }))
+ TP_printk("hrtimer=%p now=%llu", __entry->hrtimer,
+ (unsigned long long)ktime_to_ns((ktime_t) { .tv64 = __entry->now }))
);
/**
@@ -234,40 +233,40 @@ TRACE_EVENT(hrtimer_expire_entry,
*/
TRACE_EVENT(hrtimer_expire_exit,
- TP_PROTO(struct hrtimer *timer),
+ TP_PROTO(struct hrtimer *hrtimer),
- TP_ARGS(timer),
+ TP_ARGS(hrtimer),
TP_STRUCT__entry(
- __field( void *, timer )
+ __field( void *, hrtimer )
),
TP_fast_assign(
- __entry->timer = timer;
+ __entry->hrtimer = hrtimer;
),
- TP_printk("hrtimer %p", __entry->timer)
+ TP_printk("hrtimer=%p", __entry->hrtimer)
);
/**
* hrtimer_cancel - called when the hrtimer is canceled
- * @timer: pointer to struct hrtimer
+ * @hrtimer: pointer to struct hrtimer
*/
TRACE_EVENT(hrtimer_cancel,
- TP_PROTO(struct hrtimer *timer),
+ TP_PROTO(struct hrtimer *hrtimer),
- TP_ARGS(timer),
+ TP_ARGS(hrtimer),
TP_STRUCT__entry(
- __field( void *, timer )
+ __field( void *, hrtimer )
),
TP_fast_assign(
- __entry->timer = timer;
+ __entry->hrtimer = hrtimer;
),
- TP_printk("hrtimer %p", __entry->timer)
+ TP_printk("hrtimer=%p", __entry->hrtimer)
);
/**
@@ -302,7 +301,7 @@ TRACE_EVENT(itimer_state,
__entry->interval_usec = value->it_interval.tv_usec;
),
- TP_printk("which %d, expires %lu, it_value %lu.%lu, it_interval %lu.%lu",
+ TP_printk("which=%d expires=%lu it_value=%lu.%lu it_interval=%lu.%lu",
__entry->which, __entry->expires,
__entry->value_sec, __entry->value_usec,
__entry->interval_sec, __entry->interval_usec)
@@ -332,7 +331,7 @@ TRACE_EVENT(itimer_expire,
__entry->pid = pid_nr(pid);
),
- TP_printk("which %d, pid %d, now %lu", __entry->which,
+ TP_printk("which=%d pid=%d now=%lu", __entry->which,
(int) __entry->pid, __entry->now)
);
diff --git a/include/trace/events/workqueue.h b/include/trace/events/workqueue.h
index e4612dbd7ba6070d3d2a28e8a7f4359524cbe77c..d6c974474e70272bd41182ecbbaa4a2102861a0e 100644
--- a/include/trace/events/workqueue.h
+++ b/include/trace/events/workqueue.h
@@ -8,7 +8,7 @@
#include
#include
-TRACE_EVENT(workqueue_insertion,
+DECLARE_EVENT_CLASS(workqueue,
TP_PROTO(struct task_struct *wq_thread, struct work_struct *work),
@@ -30,26 +30,18 @@ TRACE_EVENT(workqueue_insertion,
__entry->thread_pid, __entry->func)
);
-TRACE_EVENT(workqueue_execution,
+DEFINE_EVENT(workqueue, workqueue_insertion,
TP_PROTO(struct task_struct *wq_thread, struct work_struct *work),
- TP_ARGS(wq_thread, work),
+ TP_ARGS(wq_thread, work)
+);
- TP_STRUCT__entry(
- __array(char, thread_comm, TASK_COMM_LEN)
- __field(pid_t, thread_pid)
- __field(work_func_t, func)
- ),
+DEFINE_EVENT(workqueue, workqueue_execution,
- TP_fast_assign(
- memcpy(__entry->thread_comm, wq_thread->comm, TASK_COMM_LEN);
- __entry->thread_pid = wq_thread->pid;
- __entry->func = work->func;
- ),
+ TP_PROTO(struct task_struct *wq_thread, struct work_struct *work),
- TP_printk("thread=%s:%d func=%pf", __entry->thread_comm,
- __entry->thread_pid, __entry->func)
+ TP_ARGS(wq_thread, work)
);
/* Trace the creation of one workqueue thread on a cpu */
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index dacb8ef6700071238a3293799f57610909c6f22f..d1b3de9c1a714f7624956c01fb60bd22898d4c6a 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -18,6 +18,26 @@
#include
+/*
+ * DECLARE_EVENT_CLASS can be used to add a generic function
+ * handlers for events. That is, if all events have the same
+ * parameters and just have distinct trace points.
+ * Each tracepoint can be defined with DEFINE_EVENT and that
+ * will map the DECLARE_EVENT_CLASS to the tracepoint.
+ *
+ * TRACE_EVENT is a one to one mapping between tracepoint and template.
+ */
+#undef TRACE_EVENT
+#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
+ DECLARE_EVENT_CLASS(name, \
+ PARAMS(proto), \
+ PARAMS(args), \
+ PARAMS(tstruct), \
+ PARAMS(assign), \
+ PARAMS(print)); \
+ DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args));
+
+
#undef __field
#define __field(type, item) type item;
@@ -36,15 +56,21 @@
#undef TP_STRUCT__entry
#define TP_STRUCT__entry(args...) args
-#undef TRACE_EVENT
-#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
- struct ftrace_raw_##name { \
- struct trace_entry ent; \
- tstruct \
- char __data[0]; \
- }; \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \
+ struct ftrace_raw_##name { \
+ struct trace_entry ent; \
+ tstruct \
+ char __data[0]; \
+ };
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(template, name, proto, args) \
static struct ftrace_event_call event_##name
+#undef DEFINE_EVENT_PRINT
+#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
+ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
+
#undef __cpparg
#define __cpparg(arg...) arg
@@ -89,12 +115,19 @@
#undef __string
#define __string(item, src) __dynamic_array(char, item, -1)
-#undef TRACE_EVENT
-#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
struct ftrace_data_offsets_##call { \
tstruct; \
};
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(template, name, proto, args)
+
+#undef DEFINE_EVENT_PRINT
+#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
+ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
+
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
/*
@@ -120,9 +153,10 @@
#undef __field
#define __field(type, item) \
ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t" \
- "offset:%u;\tsize:%u;\n", \
+ "offset:%u;\tsize:%u;\tsigned:%u;\n", \
(unsigned int)offsetof(typeof(field), item), \
- (unsigned int)sizeof(field.item)); \
+ (unsigned int)sizeof(field.item), \
+ (unsigned int)is_signed_type(type)); \
if (!ret) \
return 0;
@@ -132,19 +166,21 @@
#undef __array
#define __array(type, item, len) \
ret = trace_seq_printf(s, "\tfield:" #type " " #item "[" #len "];\t" \
- "offset:%u;\tsize:%u;\n", \
+ "offset:%u;\tsize:%u;\tsigned:%u;\n", \
(unsigned int)offsetof(typeof(field), item), \
- (unsigned int)sizeof(field.item)); \
+ (unsigned int)sizeof(field.item), \
+ (unsigned int)is_signed_type(type)); \
if (!ret) \
return 0;
#undef __dynamic_array
#define __dynamic_array(type, item, len) \
ret = trace_seq_printf(s, "\tfield:__data_loc " #type "[] " #item ";\t"\
- "offset:%u;\tsize:%u;\n", \
+ "offset:%u;\tsize:%u;\tsigned:%u;\n", \
(unsigned int)offsetof(typeof(field), \
__data_loc_##item), \
- (unsigned int)sizeof(field.__data_loc_##item)); \
+ (unsigned int)sizeof(field.__data_loc_##item), \
+ (unsigned int)is_signed_type(type)); \
if (!ret) \
return 0;
@@ -167,17 +203,50 @@
#undef TP_perf_assign
#define TP_perf_assign(args...)
-#undef TRACE_EVENT
-#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
static int \
-ftrace_format_##call(struct ftrace_event_call *unused, \
- struct trace_seq *s) \
+ftrace_format_setup_##call(struct ftrace_event_call *unused, \
+ struct trace_seq *s) \
{ \
struct ftrace_raw_##call field __attribute__((unused)); \
int ret = 0; \
\
tstruct; \
\
+ return ret; \
+} \
+ \
+static int \
+ftrace_format_##call(struct ftrace_event_call *unused, \
+ struct trace_seq *s) \
+{ \
+ int ret = 0; \
+ \
+ ret = ftrace_format_setup_##call(unused, s); \
+ if (!ret) \
+ return ret; \
+ \
+ ret = trace_seq_printf(s, "\nprint fmt: " print); \
+ \
+ return ret; \
+}
+
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(template, name, proto, args)
+
+#undef DEFINE_EVENT_PRINT
+#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
+static int \
+ftrace_format_##name(struct ftrace_event_call *unused, \
+ struct trace_seq *s) \
+{ \
+ int ret = 0; \
+ \
+ ret = ftrace_format_setup_##template(unused, s); \
+ if (!ret) \
+ return ret; \
+ \
trace_seq_printf(s, "\nprint fmt: " print); \
\
return ret; \
@@ -252,15 +321,57 @@ ftrace_format_##call(struct ftrace_event_call *unused, \
ftrace_print_symbols_seq(p, value, symbols); \
})
-#undef TRACE_EVENT
-#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
static enum print_line_t \
-ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
+ftrace_raw_output_id_##call(int event_id, const char *name, \
+ struct trace_iterator *iter, int flags) \
{ \
struct trace_seq *s = &iter->seq; \
struct ftrace_raw_##call *field; \
struct trace_entry *entry; \
struct trace_seq *p; \
+ int ret; \
+ \
+ entry = iter->ent; \
+ \
+ if (entry->type != event_id) { \
+ WARN_ON_ONCE(1); \
+ return TRACE_TYPE_UNHANDLED; \
+ } \
+ \
+ field = (typeof(field))entry; \
+ \
+ p = &get_cpu_var(ftrace_event_seq); \
+ trace_seq_init(p); \
+ ret = trace_seq_printf(s, "%s: ", name); \
+ if (ret) \
+ ret = trace_seq_printf(s, print); \
+ put_cpu(); \
+ if (!ret) \
+ return TRACE_TYPE_PARTIAL_LINE; \
+ \
+ return TRACE_TYPE_HANDLED; \
+}
+
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(template, name, proto, args) \
+static enum print_line_t \
+ftrace_raw_output_##name(struct trace_iterator *iter, int flags) \
+{ \
+ return ftrace_raw_output_id_##template(event_##name.id, \
+ #name, iter, flags); \
+}
+
+#undef DEFINE_EVENT_PRINT
+#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
+static enum print_line_t \
+ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
+{ \
+ struct trace_seq *s = &iter->seq; \
+ struct ftrace_raw_##template *field; \
+ struct trace_entry *entry; \
+ struct trace_seq *p; \
int ret; \
\
entry = iter->ent; \
@@ -274,14 +385,16 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
\
p = &get_cpu_var(ftrace_event_seq); \
trace_seq_init(p); \
- ret = trace_seq_printf(s, #call ": " print); \
+ ret = trace_seq_printf(s, "%s: ", #call); \
+ if (ret) \
+ ret = trace_seq_printf(s, print); \
put_cpu(); \
if (!ret) \
return TRACE_TYPE_PARTIAL_LINE; \
\
return TRACE_TYPE_HANDLED; \
}
-
+
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
#undef __field_ext
@@ -315,8 +428,8 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
#undef __string
#define __string(item, src) __dynamic_array(char, item, -1)
-#undef TRACE_EVENT
-#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
static int \
ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
{ \
@@ -332,6 +445,13 @@ ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
return ret; \
}
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(template, name, proto, args)
+
+#undef DEFINE_EVENT_PRINT
+#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
+ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
+
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
/*
@@ -358,10 +478,10 @@ ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
__data_size += (len) * sizeof(type);
#undef __string
-#define __string(item, src) __dynamic_array(char, item, strlen(src) + 1) \
+#define __string(item, src) __dynamic_array(char, item, strlen(src) + 1)
-#undef TRACE_EVENT
-#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
static inline int ftrace_get_offsets_##call( \
struct ftrace_data_offsets_##call *__data_offsets, proto) \
{ \
@@ -373,6 +493,13 @@ static inline int ftrace_get_offsets_##call( \
return __data_size; \
}
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(template, name, proto, args)
+
+#undef DEFINE_EVENT_PRINT
+#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
+ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
+
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
#ifdef CONFIG_EVENT_PROFILE
@@ -394,21 +521,28 @@ static inline int ftrace_get_offsets_##call( \
*
*/
-#undef TRACE_EVENT
-#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)
+
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(template, name, proto, args) \
\
-static void ftrace_profile_##call(proto); \
+static void ftrace_profile_##name(proto); \
\
-static int ftrace_profile_enable_##call(void) \
+static int ftrace_profile_enable_##name(struct ftrace_event_call *unused)\
{ \
- return register_trace_##call(ftrace_profile_##call); \
+ return register_trace_##name(ftrace_profile_##name); \
} \
\
-static void ftrace_profile_disable_##call(void) \
+static void ftrace_profile_disable_##name(struct ftrace_event_call *unused)\
{ \
- unregister_trace_##call(ftrace_profile_##call); \
+ unregister_trace_##name(ftrace_profile_##name); \
}
+#undef DEFINE_EVENT_PRINT
+#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
+ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
+
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
#endif
@@ -423,7 +557,7 @@ static void ftrace_profile_disable_##call(void) \
* event_trace_printk(_RET_IP_, ": " );
* }
*
- * static int ftrace_reg_event_(void)
+ * static int ftrace_reg_event_(struct ftrace_event_call *unused)
* {
* int ret;
*
@@ -434,7 +568,7 @@ static void ftrace_profile_disable_##call(void) \
* return ret;
* }
*
- * static void ftrace_unreg_event_(void)
+ * static void ftrace_unreg_event_(struct ftrace_event_call *unused)
* {
* unregister_trace_(ftrace_event_);
* }
@@ -469,7 +603,7 @@ static void ftrace_profile_disable_##call(void) \
* trace_current_buffer_unlock_commit(buffer, event, irq_flags, pc);
* }
*
- * static int ftrace_raw_reg_event_(void)
+ * static int ftrace_raw_reg_event_(struct ftrace_event_call *unused)
* {
* int ret;
*
@@ -480,7 +614,7 @@ static void ftrace_profile_disable_##call(void) \
* return ret;
* }
*
- * static void ftrace_unreg_event_(void)
+ * static void ftrace_unreg_event_(struct ftrace_event_call *unused)
* {
* unregister_trace_(ftrace_raw_event_);
* }
@@ -489,7 +623,7 @@ static void ftrace_profile_disable_##call(void) \
* .trace = ftrace_raw_output_, <-- stage 2
* };
*
- * static int ftrace_raw_init_event_(void)
+ * static int ftrace_raw_init_event_(struct ftrace_event_call *unused)
* {
* int id;
*
@@ -547,15 +681,13 @@ static void ftrace_profile_disable_##call(void) \
#define __assign_str(dst, src) \
strcpy(__get_str(dst), src);
-#undef TRACE_EVENT
-#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
\
-static struct ftrace_event_call event_##call; \
- \
-static void ftrace_raw_event_##call(proto) \
+static void ftrace_raw_event_id_##call(struct ftrace_event_call *event_call, \
+ proto) \
{ \
struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
- struct ftrace_event_call *event_call = &event_##call; \
struct ring_buffer_event *event; \
struct ftrace_raw_##call *entry; \
struct ring_buffer *buffer; \
@@ -569,7 +701,7 @@ static void ftrace_raw_event_##call(proto) \
__data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
\
event = trace_current_buffer_lock_reserve(&buffer, \
- event_##call.id, \
+ event_call->id, \
sizeof(*entry) + __data_size, \
irq_flags, pc); \
if (!event) \
@@ -584,9 +716,17 @@ static void ftrace_raw_event_##call(proto) \
if (!filter_current_check_discard(buffer, event_call, entry, event)) \
trace_nowake_buffer_unlock_commit(buffer, \
event, irq_flags, pc); \
+}
+
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(template, call, proto, args) \
+ \
+static void ftrace_raw_event_##call(proto) \
+{ \
+ ftrace_raw_event_id_##template(&event_##call, args); \
} \
\
-static int ftrace_raw_reg_event_##call(void *ptr) \
+static int ftrace_raw_reg_event_##call(struct ftrace_event_call *unused)\
{ \
int ret; \
\
@@ -597,7 +737,7 @@ static int ftrace_raw_reg_event_##call(void *ptr) \
return ret; \
} \
\
-static void ftrace_raw_unreg_event_##call(void *ptr) \
+static void ftrace_raw_unreg_event_##call(struct ftrace_event_call *unused)\
{ \
unregister_trace_##call(ftrace_raw_event_##call); \
} \
@@ -606,7 +746,7 @@ static struct trace_event ftrace_event_type_##call = { \
.trace = ftrace_raw_output_##call, \
}; \
\
-static int ftrace_raw_init_event_##call(void) \
+static int ftrace_raw_init_event_##call(struct ftrace_event_call *unused)\
{ \
int id; \
\
@@ -616,7 +756,36 @@ static int ftrace_raw_init_event_##call(void) \
event_##call.id = id; \
INIT_LIST_HEAD(&event_##call.fields); \
return 0; \
-} \
+}
+
+#undef DEFINE_EVENT_PRINT
+#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
+ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
+
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)
+
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(template, call, proto, args) \
+ \
+static struct ftrace_event_call __used \
+__attribute__((__aligned__(4))) \
+__attribute__((section("_ftrace_events"))) event_##call = { \
+ .name = #call, \
+ .system = __stringify(TRACE_SYSTEM), \
+ .event = &ftrace_event_type_##call, \
+ .raw_init = ftrace_raw_init_event_##call, \
+ .regfunc = ftrace_raw_reg_event_##call, \
+ .unregfunc = ftrace_raw_unreg_event_##call, \
+ .show_format = ftrace_format_##template, \
+ .define_fields = ftrace_define_fields_##template, \
+ _TRACE_PROFILE_INIT(call) \
+}
+
+#undef DEFINE_EVENT_PRINT
+#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
\
static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
@@ -628,7 +797,7 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
.regfunc = ftrace_raw_reg_event_##call, \
.unregfunc = ftrace_raw_unreg_event_##call, \
.show_format = ftrace_format_##call, \
- .define_fields = ftrace_define_fields_##call, \
+ .define_fields = ftrace_define_fields_##template, \
_TRACE_PROFILE_INIT(call) \
}
@@ -646,6 +815,7 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
* struct ftrace_event_call *event_call = &event_;
* extern void perf_tp_event(int, u64, u64, void *, int);
* struct ftrace_raw_##call *entry;
+ * struct perf_trace_buf *trace_buf;
* u64 __addr = 0, __count = 1;
* unsigned long irq_flags;
* struct trace_entry *ent;
@@ -670,14 +840,25 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
* __cpu = smp_processor_id();
*
* if (in_nmi())
- * raw_data = rcu_dereference(trace_profile_buf_nmi);
+ * trace_buf = rcu_dereference(perf_trace_buf_nmi);
* else
- * raw_data = rcu_dereference(trace_profile_buf);
+ * trace_buf = rcu_dereference(perf_trace_buf);
*
- * if (!raw_data)
+ * if (!trace_buf)
* goto end;
*
- * raw_data = per_cpu_ptr(raw_data, __cpu);
+ * trace_buf = per_cpu_ptr(trace_buf, __cpu);
+ *
+ * // Avoid recursion from perf that could mess up the buffer
+ * if (trace_buf->recursion++)
+ * goto end_recursion;
+ *
+ * raw_data = trace_buf->buf;
+ *
+ * // Make recursion update visible before entering perf_tp_event
+ * // so that we protect from perf recursions.
+ *
+ * barrier();
*
* //zero dead bytes from alignment to avoid stack leak to userspace:
* *(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL;
@@ -704,21 +885,26 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
#undef __perf_count
#define __perf_count(c) __count = (c)
-#undef TRACE_EVENT
-#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
-static void ftrace_profile_##call(proto) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
+static void \
+ftrace_profile_templ_##call(struct ftrace_event_call *event_call, \
+ proto) \
{ \
struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
- struct ftrace_event_call *event_call = &event_##call; \
- extern void perf_tp_event(int, u64, u64, void *, int); \
+ extern int perf_swevent_get_recursion_context(void); \
+ extern void perf_swevent_put_recursion_context(int rctx); \
+ extern void perf_tp_event(int, u64, u64, void *, int); \
struct ftrace_raw_##call *entry; \
u64 __addr = 0, __count = 1; \
unsigned long irq_flags; \
struct trace_entry *ent; \
int __entry_size; \
int __data_size; \
+ char *trace_buf; \
char *raw_data; \
int __cpu; \
+ int rctx; \
int pc; \
\
pc = preempt_count(); \
@@ -733,17 +919,22 @@ static void ftrace_profile_##call(proto) \
return; \
\
local_irq_save(irq_flags); \
+ \
+ rctx = perf_swevent_get_recursion_context(); \
+ if (rctx < 0) \
+ goto end_recursion; \
+ \
__cpu = smp_processor_id(); \
\
if (in_nmi()) \
- raw_data = rcu_dereference(trace_profile_buf_nmi); \
+ trace_buf = rcu_dereference(perf_trace_buf_nmi); \
else \
- raw_data = rcu_dereference(trace_profile_buf); \
+ trace_buf = rcu_dereference(perf_trace_buf); \
\
- if (!raw_data) \
+ if (!trace_buf) \
goto end; \
\
- raw_data = per_cpu_ptr(raw_data, __cpu); \
+ raw_data = per_cpu_ptr(trace_buf, __cpu); \
\
*(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL; \
entry = (struct ftrace_raw_##call *)raw_data; \
@@ -759,10 +950,25 @@ static void ftrace_profile_##call(proto) \
__entry_size); \
\
end: \
+ perf_swevent_put_recursion_context(rctx); \
+end_recursion: \
local_irq_restore(irq_flags); \
\
}
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(template, call, proto, args) \
+static void ftrace_profile_##call(proto) \
+{ \
+ struct ftrace_event_call *event_call = &event_##call; \
+ \
+ ftrace_profile_templ_##template(event_call, args); \
+}
+
+#undef DEFINE_EVENT_PRINT
+#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
+ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
+
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
#endif /* CONFIG_EVENT_PROFILE */
diff --git a/include/trace/syscall.h b/include/trace/syscall.h
index e972f0a40f8d02af648863793adb7e8383673f7b..961fda3556bb828f62508dc3acb440c90f21e32d 100644
--- a/include/trace/syscall.h
+++ b/include/trace/syscall.h
@@ -12,21 +12,19 @@
* A syscall entry in the ftrace syscalls array.
*
* @name: name of the syscall
+ * @syscall_nr: number of the syscall
* @nb_args: number of parameters it takes
* @types: list of types as strings
* @args: list of args as strings (args[i] matches types[i])
- * @enter_id: associated ftrace enter event id
- * @exit_id: associated ftrace exit event id
* @enter_event: associated syscall_enter trace event
* @exit_event: associated syscall_exit trace event
*/
struct syscall_metadata {
const char *name;
+ int syscall_nr;
int nb_args;
const char **types;
const char **args;
- int enter_id;
- int exit_id;
struct ftrace_event_call *enter_event;
struct ftrace_event_call *exit_event;
@@ -34,29 +32,28 @@ struct syscall_metadata {
#ifdef CONFIG_FTRACE_SYSCALLS
extern unsigned long arch_syscall_addr(int nr);
-extern int syscall_name_to_nr(char *name);
-void set_syscall_enter_id(int num, int id);
-void set_syscall_exit_id(int num, int id);
-extern struct trace_event event_syscall_enter;
-extern struct trace_event event_syscall_exit;
-extern int reg_event_syscall_enter(void *ptr);
-extern void unreg_event_syscall_enter(void *ptr);
-extern int reg_event_syscall_exit(void *ptr);
-extern void unreg_event_syscall_exit(void *ptr);
+extern int init_syscall_trace(struct ftrace_event_call *call);
+
extern int syscall_enter_format(struct ftrace_event_call *call,
struct trace_seq *s);
extern int syscall_exit_format(struct ftrace_event_call *call,
struct trace_seq *s);
extern int syscall_enter_define_fields(struct ftrace_event_call *call);
extern int syscall_exit_define_fields(struct ftrace_event_call *call);
+extern int reg_event_syscall_enter(struct ftrace_event_call *call);
+extern void unreg_event_syscall_enter(struct ftrace_event_call *call);
+extern int reg_event_syscall_exit(struct ftrace_event_call *call);
+extern void unreg_event_syscall_exit(struct ftrace_event_call *call);
+extern int
+ftrace_format_syscall(struct ftrace_event_call *call, struct trace_seq *s);
enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags);
enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags);
#endif
#ifdef CONFIG_EVENT_PROFILE
-int reg_prof_syscall_enter(char *name);
-void unreg_prof_syscall_enter(char *name);
-int reg_prof_syscall_exit(char *name);
-void unreg_prof_syscall_exit(char *name);
+int prof_sysenter_enable(struct ftrace_event_call *call);
+void prof_sysenter_disable(struct ftrace_event_call *call);
+int prof_sysexit_enable(struct ftrace_event_call *call);
+void prof_sysexit_disable(struct ftrace_event_call *call);
#endif
diff --git a/kernel/Makefile b/kernel/Makefile
index dcf6789bf547e5af8e1c569b743ac72a2af4af93..982c50e2ce534df9a3bf5a704580fd0e13fe7f5b 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -21,6 +21,7 @@ CFLAGS_REMOVE_mutex-debug.o = -pg
CFLAGS_REMOVE_rtmutex-debug.o = -pg
CFLAGS_REMOVE_cgroup-debug.o = -pg
CFLAGS_REMOVE_sched_clock.o = -pg
+CFLAGS_REMOVE_perf_event.o = -pg
endif
obj-$(CONFIG_FREEZER) += freezer.o
@@ -97,6 +98,7 @@ obj-$(CONFIG_SMP) += sched_cpupri.o
obj-$(CONFIG_SLOW_WORK) += slow-work.o
obj-$(CONFIG_SLOW_WORK_DEBUG) += slow-work-debugfs.o
obj-$(CONFIG_PERF_EVENTS) += perf_event.o
+obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y)
# According to Alan Modra , the -fno-omit-frame-pointer is
diff --git a/kernel/exit.c b/kernel/exit.c
index f7864ac2ecc1ad54c0af6b06b6f9d2da4a93f1ac..3f45e3cf931d917fc1dca145be32618afda895cd 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -49,6 +49,7 @@
#include
#include
#include
+#include
#include
#include
@@ -977,6 +978,10 @@ NORET_TYPE void do_exit(long code)
proc_exit_connector(tsk);
+ /*
+ * FIXME: do that only when needed, using sched_exit tracepoint
+ */
+ flush_ptrace_hw_breakpoint(tsk);
/*
* Flush inherited counters to the parent - before the parent
* gets woken up by child-exit notifications.
diff --git a/kernel/hw_breakpoint.c b/kernel/hw_breakpoint.c
new file mode 100644
index 0000000000000000000000000000000000000000..cf5ee1628411cb58ee249e8ccec84e3c08c53516
--- /dev/null
+++ b/kernel/hw_breakpoint.c
@@ -0,0 +1,423 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) 2007 Alan Stern
+ * Copyright (C) IBM Corporation, 2009
+ * Copyright (C) 2009, Frederic Weisbecker
+ *
+ * Thanks to Ingo Molnar for his many suggestions.
+ *
+ * Authors: Alan Stern
+ * K.Prasad
+ * Frederic Weisbecker
+ */
+
+/*
+ * HW_breakpoint: a unified kernel/user-space hardware breakpoint facility,
+ * using the CPU's debug registers.
+ * This file contains the arch-independent routines.
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include
+
+/*
+ * Constraints data
+ */
+
+/* Number of pinned cpu breakpoints in a cpu */
+static DEFINE_PER_CPU(unsigned int, nr_cpu_bp_pinned);
+
+/* Number of pinned task breakpoints in a cpu */
+static DEFINE_PER_CPU(unsigned int, task_bp_pinned[HBP_NUM]);
+
+/* Number of non-pinned cpu/task breakpoints in a cpu */
+static DEFINE_PER_CPU(unsigned int, nr_bp_flexible);
+
+/* Gather the number of total pinned and un-pinned bp in a cpuset */
+struct bp_busy_slots {
+ unsigned int pinned;
+ unsigned int flexible;
+};
+
+/* Serialize accesses to the above constraints */
+static DEFINE_MUTEX(nr_bp_mutex);
+
+/*
+ * Report the maximum number of pinned breakpoints a task
+ * have in this cpu
+ */
+static unsigned int max_task_bp_pinned(int cpu)
+{
+ int i;
+ unsigned int *tsk_pinned = per_cpu(task_bp_pinned, cpu);
+
+ for (i = HBP_NUM -1; i >= 0; i--) {
+ if (tsk_pinned[i] > 0)
+ return i + 1;
+ }
+
+ return 0;
+}
+
+/*
+ * Report the number of pinned/un-pinned breakpoints we have in
+ * a given cpu (cpu > -1) or in all of them (cpu = -1).
+ */
+static void fetch_bp_busy_slots(struct bp_busy_slots *slots, int cpu)
+{
+ if (cpu >= 0) {
+ slots->pinned = per_cpu(nr_cpu_bp_pinned, cpu);
+ slots->pinned += max_task_bp_pinned(cpu);
+ slots->flexible = per_cpu(nr_bp_flexible, cpu);
+
+ return;
+ }
+
+ for_each_online_cpu(cpu) {
+ unsigned int nr;
+
+ nr = per_cpu(nr_cpu_bp_pinned, cpu);
+ nr += max_task_bp_pinned(cpu);
+
+ if (nr > slots->pinned)
+ slots->pinned = nr;
+
+ nr = per_cpu(nr_bp_flexible, cpu);
+
+ if (nr > slots->flexible)
+ slots->flexible = nr;
+ }
+}
+
+/*
+ * Add a pinned breakpoint for the given task in our constraint table
+ */
+static void toggle_bp_task_slot(struct task_struct *tsk, int cpu, bool enable)
+{
+ int count = 0;
+ struct perf_event *bp;
+ struct perf_event_context *ctx = tsk->perf_event_ctxp;
+ unsigned int *tsk_pinned;
+ struct list_head *list;
+ unsigned long flags;
+
+ if (WARN_ONCE(!ctx, "No perf context for this task"))
+ return;
+
+ list = &ctx->event_list;
+
+ spin_lock_irqsave(&ctx->lock, flags);
+
+ /*
+ * The current breakpoint counter is not included in the list
+ * at the open() callback time
+ */
+ list_for_each_entry(bp, list, event_entry) {
+ if (bp->attr.type == PERF_TYPE_BREAKPOINT)
+ count++;
+ }
+
+ spin_unlock_irqrestore(&ctx->lock, flags);
+
+ if (WARN_ONCE(count < 0, "No breakpoint counter found in the counter list"))
+ return;
+
+ tsk_pinned = per_cpu(task_bp_pinned, cpu);
+ if (enable) {
+ tsk_pinned[count]++;
+ if (count > 0)
+ tsk_pinned[count-1]--;
+ } else {
+ tsk_pinned[count]--;
+ if (count > 0)
+ tsk_pinned[count-1]++;
+ }
+}
+
+/*
+ * Add/remove the given breakpoint in our constraint table
+ */
+static void toggle_bp_slot(struct perf_event *bp, bool enable)
+{
+ int cpu = bp->cpu;
+ struct task_struct *tsk = bp->ctx->task;
+
+ /* Pinned counter task profiling */
+ if (tsk) {
+ if (cpu >= 0) {
+ toggle_bp_task_slot(tsk, cpu, enable);
+ return;
+ }
+
+ for_each_online_cpu(cpu)
+ toggle_bp_task_slot(tsk, cpu, enable);
+ return;
+ }
+
+ /* Pinned counter cpu profiling */
+ if (enable)
+ per_cpu(nr_cpu_bp_pinned, bp->cpu)++;
+ else
+ per_cpu(nr_cpu_bp_pinned, bp->cpu)--;
+}
+
+/*
+ * Contraints to check before allowing this new breakpoint counter:
+ *
+ * == Non-pinned counter == (Considered as pinned for now)
+ *
+ * - If attached to a single cpu, check:
+ *
+ * (per_cpu(nr_bp_flexible, cpu) || (per_cpu(nr_cpu_bp_pinned, cpu)
+ * + max(per_cpu(task_bp_pinned, cpu)))) < HBP_NUM
+ *
+ * -> If there are already non-pinned counters in this cpu, it means
+ * there is already a free slot for them.
+ * Otherwise, we check that the maximum number of per task
+ * breakpoints (for this cpu) plus the number of per cpu breakpoint
+ * (for this cpu) doesn't cover every registers.
+ *
+ * - If attached to every cpus, check:
+ *
+ * (per_cpu(nr_bp_flexible, *) || (max(per_cpu(nr_cpu_bp_pinned, *))
+ * + max(per_cpu(task_bp_pinned, *)))) < HBP_NUM
+ *
+ * -> This is roughly the same, except we check the number of per cpu
+ * bp for every cpu and we keep the max one. Same for the per tasks
+ * breakpoints.
+ *
+ *
+ * == Pinned counter ==
+ *
+ * - If attached to a single cpu, check:
+ *
+ * ((per_cpu(nr_bp_flexible, cpu) > 1) + per_cpu(nr_cpu_bp_pinned, cpu)
+ * + max(per_cpu(task_bp_pinned, cpu))) < HBP_NUM
+ *
+ * -> Same checks as before. But now the nr_bp_flexible, if any, must keep
+ * one register at least (or they will never be fed).
+ *
+ * - If attached to every cpus, check:
+ *
+ * ((per_cpu(nr_bp_flexible, *) > 1) + max(per_cpu(nr_cpu_bp_pinned, *))
+ * + max(per_cpu(task_bp_pinned, *))) < HBP_NUM
+ */
+int reserve_bp_slot(struct perf_event *bp)
+{
+ struct bp_busy_slots slots = {0};
+ int ret = 0;
+
+ mutex_lock(&nr_bp_mutex);
+
+ fetch_bp_busy_slots(&slots, bp->cpu);
+
+ /* Flexible counters need to keep at least one slot */
+ if (slots.pinned + (!!slots.flexible) == HBP_NUM) {
+ ret = -ENOSPC;
+ goto end;
+ }
+
+ toggle_bp_slot(bp, true);
+
+end:
+ mutex_unlock(&nr_bp_mutex);
+
+ return ret;
+}
+
+void release_bp_slot(struct perf_event *bp)
+{
+ mutex_lock(&nr_bp_mutex);
+
+ toggle_bp_slot(bp, false);
+
+ mutex_unlock(&nr_bp_mutex);
+}
+
+
+int __register_perf_hw_breakpoint(struct perf_event *bp)
+{
+ int ret;
+
+ ret = reserve_bp_slot(bp);
+ if (ret)
+ return ret;
+
+ /*
+ * Ptrace breakpoints can be temporary perf events only
+ * meant to reserve a slot. In this case, it is created disabled and
+ * we don't want to check the params right now (as we put a null addr)
+ * But perf tools create events as disabled and we want to check
+ * the params for them.
+ * This is a quick hack that will be removed soon, once we remove
+ * the tmp breakpoints from ptrace
+ */
+ if (!bp->attr.disabled || bp->callback == perf_bp_event)
+ ret = arch_validate_hwbkpt_settings(bp, bp->ctx->task);
+
+ return ret;
+}
+
+int register_perf_hw_breakpoint(struct perf_event *bp)
+{
+ bp->callback = perf_bp_event;
+
+ return __register_perf_hw_breakpoint(bp);
+}
+
+/**
+ * register_user_hw_breakpoint - register a hardware breakpoint for user space
+ * @attr: breakpoint attributes
+ * @triggered: callback to trigger when we hit the breakpoint
+ * @tsk: pointer to 'task_struct' of the process to which the address belongs
+ */
+struct perf_event *
+register_user_hw_breakpoint(struct perf_event_attr *attr,
+ perf_callback_t triggered,
+ struct task_struct *tsk)
+{
+ return perf_event_create_kernel_counter(attr, -1, tsk->pid, triggered);
+}
+EXPORT_SYMBOL_GPL(register_user_hw_breakpoint);
+
+/**
+ * modify_user_hw_breakpoint - modify a user-space hardware breakpoint
+ * @bp: the breakpoint structure to modify
+ * @attr: new breakpoint attributes
+ * @triggered: callback to trigger when we hit the breakpoint
+ * @tsk: pointer to 'task_struct' of the process to which the address belongs
+ */
+struct perf_event *
+modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *attr,
+ perf_callback_t triggered,
+ struct task_struct *tsk)
+{
+ /*
+ * FIXME: do it without unregistering
+ * - We don't want to lose our slot
+ * - If the new bp is incorrect, don't lose the older one
+ */
+ unregister_hw_breakpoint(bp);
+
+ return perf_event_create_kernel_counter(attr, -1, tsk->pid, triggered);
+}
+EXPORT_SYMBOL_GPL(modify_user_hw_breakpoint);
+
+/**
+ * unregister_hw_breakpoint - unregister a user-space hardware breakpoint
+ * @bp: the breakpoint structure to unregister
+ */
+void unregister_hw_breakpoint(struct perf_event *bp)
+{
+ if (!bp)
+ return;
+ perf_event_release_kernel(bp);
+}
+EXPORT_SYMBOL_GPL(unregister_hw_breakpoint);
+
+/**
+ * register_wide_hw_breakpoint - register a wide breakpoint in the kernel
+ * @attr: breakpoint attributes
+ * @triggered: callback to trigger when we hit the breakpoint
+ *
+ * @return a set of per_cpu pointers to perf events
+ */
+struct perf_event **
+register_wide_hw_breakpoint(struct perf_event_attr *attr,
+ perf_callback_t triggered)
+{
+ struct perf_event **cpu_events, **pevent, *bp;
+ long err;
+ int cpu;
+
+ cpu_events = alloc_percpu(typeof(*cpu_events));
+ if (!cpu_events)
+ return ERR_PTR(-ENOMEM);
+
+ for_each_possible_cpu(cpu) {
+ pevent = per_cpu_ptr(cpu_events, cpu);
+ bp = perf_event_create_kernel_counter(attr, cpu, -1, triggered);
+
+ *pevent = bp;
+
+ if (IS_ERR(bp)) {
+ err = PTR_ERR(bp);
+ goto fail;
+ }
+ }
+
+ return cpu_events;
+
+fail:
+ for_each_possible_cpu(cpu) {
+ pevent = per_cpu_ptr(cpu_events, cpu);
+ if (IS_ERR(*pevent))
+ break;
+ unregister_hw_breakpoint(*pevent);
+ }
+ free_percpu(cpu_events);
+ /* return the error if any */
+ return ERR_PTR(err);
+}
+EXPORT_SYMBOL_GPL(register_wide_hw_breakpoint);
+
+/**
+ * unregister_wide_hw_breakpoint - unregister a wide breakpoint in the kernel
+ * @cpu_events: the per cpu set of events to unregister
+ */
+void unregister_wide_hw_breakpoint(struct perf_event **cpu_events)
+{
+ int cpu;
+ struct perf_event **pevent;
+
+ for_each_possible_cpu(cpu) {
+ pevent = per_cpu_ptr(cpu_events, cpu);
+ unregister_hw_breakpoint(*pevent);
+ }
+ free_percpu(cpu_events);
+}
+EXPORT_SYMBOL_GPL(unregister_wide_hw_breakpoint);
+
+static struct notifier_block hw_breakpoint_exceptions_nb = {
+ .notifier_call = hw_breakpoint_exceptions_notify,
+ /* we need to be notified first */
+ .priority = 0x7fffffff
+};
+
+static int __init init_hw_breakpoint(void)
+{
+ return register_die_notifier(&hw_breakpoint_exceptions_nb);
+}
+core_initcall(init_hw_breakpoint);
+
+
+struct pmu perf_ops_bp = {
+ .enable = arch_install_hw_breakpoint,
+ .disable = arch_uninstall_hw_breakpoint,
+ .read = hw_breakpoint_pmu_read,
+ .unthrottle = hw_breakpoint_pmu_unthrottle
+};
diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index 8b6b8b697c686a297de3c85421e1e5172ff53a27..8e5288a8a3555c419f477e0925f3210e3863cef6 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -181,6 +181,7 @@ unsigned long kallsyms_lookup_name(const char *name)
}
return module_kallsyms_lookup_name(name);
}
+EXPORT_SYMBOL_GPL(kallsyms_lookup_name);
int kallsyms_on_each_symbol(int (*fn)(void *, const char *, struct module *,
unsigned long),
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 1494e85b35f29bb5c006c34221eadfedceee934d..e5342a344c43bee9140d9127f1fe907b21149e8d 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -90,6 +90,9 @@ static spinlock_t *kretprobe_table_lock_ptr(unsigned long hash)
*/
static struct kprobe_blackpoint kprobe_blacklist[] = {
{"preempt_schedule",},
+ {"native_get_debugreg",},
+ {"irq_entries_start",},
+ {"common_interrupt",},
{NULL} /* Terminator */
};
@@ -673,6 +676,40 @@ static kprobe_opcode_t __kprobes *kprobe_addr(struct kprobe *p)
return (kprobe_opcode_t *)(((char *)addr) + p->offset);
}
+/* Check passed kprobe is valid and return kprobe in kprobe_table. */
+static struct kprobe * __kprobes __get_valid_kprobe(struct kprobe *p)
+{
+ struct kprobe *old_p, *list_p;
+
+ old_p = get_kprobe(p->addr);
+ if (unlikely(!old_p))
+ return NULL;
+
+ if (p != old_p) {
+ list_for_each_entry_rcu(list_p, &old_p->list, list)
+ if (list_p == p)
+ /* kprobe p is a valid probe */
+ goto valid;
+ return NULL;
+ }
+valid:
+ return old_p;
+}
+
+/* Return error if the kprobe is being re-registered */
+static inline int check_kprobe_rereg(struct kprobe *p)
+{
+ int ret = 0;
+ struct kprobe *old_p;
+
+ mutex_lock(&kprobe_mutex);
+ old_p = __get_valid_kprobe(p);
+ if (old_p)
+ ret = -EINVAL;
+ mutex_unlock(&kprobe_mutex);
+ return ret;
+}
+
int __kprobes register_kprobe(struct kprobe *p)
{
int ret = 0;
@@ -685,6 +722,10 @@ int __kprobes register_kprobe(struct kprobe *p)
return -EINVAL;
p->addr = addr;
+ ret = check_kprobe_rereg(p);
+ if (ret)
+ return ret;
+
preempt_disable();
if (!kernel_text_address((unsigned long) p->addr) ||
in_kprobes_functions((unsigned long) p->addr)) {
@@ -754,26 +795,6 @@ int __kprobes register_kprobe(struct kprobe *p)
}
EXPORT_SYMBOL_GPL(register_kprobe);
-/* Check passed kprobe is valid and return kprobe in kprobe_table. */
-static struct kprobe * __kprobes __get_valid_kprobe(struct kprobe *p)
-{
- struct kprobe *old_p, *list_p;
-
- old_p = get_kprobe(p->addr);
- if (unlikely(!old_p))
- return NULL;
-
- if (p != old_p) {
- list_for_each_entry_rcu(list_p, &old_p->list, list)
- if (list_p == p)
- /* kprobe p is a valid probe */
- goto valid;
- return NULL;
- }
-valid:
- return old_p;
-}
-
/*
* Unregister a kprobe without a scheduler synchronization.
*/
@@ -1141,6 +1162,13 @@ static void __kprobes kill_kprobe(struct kprobe *p)
arch_remove_kprobe(p);
}
+void __kprobes dump_kprobe(struct kprobe *kp)
+{
+ printk(KERN_WARNING "Dumping kprobe:\n");
+ printk(KERN_WARNING "Name: %s\nAddress: %p\nOffset: %x\n",
+ kp->symbol_name, kp->addr, kp->offset);
+}
+
/* Module notifier call back, checking kprobes on the module */
static int __kprobes kprobes_module_callback(struct notifier_block *nb,
unsigned long val, void *data)
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 9af56723c09605a07742180983e465500cef2d9d..f5dcd36d3151a0e3563f786f050795d605d25f99 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -49,7 +49,7 @@
#include "lockdep_internals.h"
#define CREATE_TRACE_POINTS
-#include
+#include
#ifdef CONFIG_PROVE_LOCKING
int prove_locking = 1;
diff --git a/kernel/notifier.c b/kernel/notifier.c
index 61d5aa5eced3466393582e4f566b63c468ea7cc3..acd24e7643eb8ebdb9a0386b65931294b37c7eaf 100644
--- a/kernel/notifier.c
+++ b/kernel/notifier.c
@@ -558,7 +558,7 @@ EXPORT_SYMBOL(unregister_reboot_notifier);
static ATOMIC_NOTIFIER_HEAD(die_chain);
-int notrace notify_die(enum die_val val, const char *str,
+int notrace __kprobes notify_die(enum die_val val, const char *str,
struct pt_regs *regs, long err, int trap, int sig)
{
struct die_args args = {
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 7f29643c898549a5e523d07479d581edc4e870f5..6b7ddba1dd640cc94f2af66fd163961e944a94f2 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -28,6 +28,8 @@
#include
#include
#include
+#include
+#include
#include
@@ -244,6 +246,49 @@ static void perf_unpin_context(struct perf_event_context *ctx)
put_ctx(ctx);
}
+static inline u64 perf_clock(void)
+{
+ return cpu_clock(smp_processor_id());
+}
+
+/*
+ * Update the record of the current time in a context.
+ */
+static void update_context_time(struct perf_event_context *ctx)
+{
+ u64 now = perf_clock();
+
+ ctx->time += now - ctx->timestamp;
+ ctx->timestamp = now;
+}
+
+/*
+ * Update the total_time_enabled and total_time_running fields for a event.
+ */
+static void update_event_times(struct perf_event *event)
+{
+ struct perf_event_context *ctx = event->ctx;
+ u64 run_end;
+
+ if (event->state < PERF_EVENT_STATE_INACTIVE ||
+ event->group_leader->state < PERF_EVENT_STATE_INACTIVE)
+ return;
+
+ if (ctx->is_active)
+ run_end = ctx->time;
+ else
+ run_end = event->tstamp_stopped;
+
+ event->total_time_enabled = run_end - event->tstamp_enabled;
+
+ if (event->state == PERF_EVENT_STATE_INACTIVE)
+ run_end = event->tstamp_stopped;
+ else
+ run_end = ctx->time;
+
+ event->total_time_running = run_end - event->tstamp_running;
+}
+
/*
* Add a event from the lists for its context.
* Must be called with ctx->mutex and ctx->lock held.
@@ -292,6 +337,18 @@ list_del_event(struct perf_event *event, struct perf_event_context *ctx)
if (event->group_leader != event)
event->group_leader->nr_siblings--;
+ update_event_times(event);
+
+ /*
+ * If event was in error state, then keep it
+ * that way, otherwise bogus counts will be
+ * returned on read(). The only way to get out
+ * of error state is by explicit re-enabling
+ * of the event
+ */
+ if (event->state > PERF_EVENT_STATE_OFF)
+ event->state = PERF_EVENT_STATE_OFF;
+
/*
* If this was a group event with sibling events then
* upgrade the siblings to singleton events by adding them
@@ -445,50 +502,11 @@ static void perf_event_remove_from_context(struct perf_event *event)
* can remove the event safely, if the call above did not
* succeed.
*/
- if (!list_empty(&event->group_entry)) {
+ if (!list_empty(&event->group_entry))
list_del_event(event, ctx);
- }
spin_unlock_irq(&ctx->lock);
}
-static inline u64 perf_clock(void)
-{
- return cpu_clock(smp_processor_id());
-}
-
-/*
- * Update the record of the current time in a context.
- */
-static void update_context_time(struct perf_event_context *ctx)
-{
- u64 now = perf_clock();
-
- ctx->time += now - ctx->timestamp;
- ctx->timestamp = now;
-}
-
-/*
- * Update the total_time_enabled and total_time_running fields for a event.
- */
-static void update_event_times(struct perf_event *event)
-{
- struct perf_event_context *ctx = event->ctx;
- u64 run_end;
-
- if (event->state < PERF_EVENT_STATE_INACTIVE ||
- event->group_leader->state < PERF_EVENT_STATE_INACTIVE)
- return;
-
- event->total_time_enabled = ctx->time - event->tstamp_enabled;
-
- if (event->state == PERF_EVENT_STATE_INACTIVE)
- run_end = event->tstamp_stopped;
- else
- run_end = ctx->time;
-
- event->total_time_running = run_end - event->tstamp_running;
-}
-
/*
* Update total_time_enabled and total_time_running for all events in a group.
*/
@@ -1031,10 +1049,10 @@ void __perf_event_sched_out(struct perf_event_context *ctx,
update_context_time(ctx);
perf_disable();
- if (ctx->nr_active)
+ if (ctx->nr_active) {
list_for_each_entry(event, &ctx->group_list, group_entry)
group_sched_out(event, cpuctx, ctx);
-
+ }
perf_enable();
out:
spin_unlock(&ctx->lock);
@@ -1059,8 +1077,6 @@ static int context_equiv(struct perf_event_context *ctx1,
&& !ctx1->pin_count && !ctx2->pin_count;
}
-static void __perf_event_read(void *event);
-
static void __perf_event_sync_stat(struct perf_event *event,
struct perf_event *next_event)
{
@@ -1078,8 +1094,8 @@ static void __perf_event_sync_stat(struct perf_event *event,
*/
switch (event->state) {
case PERF_EVENT_STATE_ACTIVE:
- __perf_event_read(event);
- break;
+ event->pmu->read(event);
+ /* fall-through */
case PERF_EVENT_STATE_INACTIVE:
update_event_times(event);
@@ -1118,6 +1134,8 @@ static void perf_event_sync_stat(struct perf_event_context *ctx,
if (!ctx->nr_stat)
return;
+ update_context_time(ctx);
+
event = list_first_entry(&ctx->event_list,
struct perf_event, event_entry);
@@ -1161,8 +1179,6 @@ void perf_event_task_sched_out(struct task_struct *task,
if (likely(!ctx || !cpuctx->task_ctx))
return;
- update_context_time(ctx);
-
rcu_read_lock();
parent = rcu_dereference(ctx->parent_ctx);
next_ctx = next->perf_event_ctxp;
@@ -1515,7 +1531,6 @@ static void __perf_event_read(void *info)
struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
struct perf_event *event = info;
struct perf_event_context *ctx = event->ctx;
- unsigned long flags;
/*
* If this is a task context, we need to check whether it is
@@ -1527,12 +1542,12 @@ static void __perf_event_read(void *info)
if (ctx->task && cpuctx->task_ctx != ctx)
return;
- local_irq_save(flags);
- if (ctx->is_active)
- update_context_time(ctx);
- event->pmu->read(event);
+ spin_lock(&ctx->lock);
+ update_context_time(ctx);
update_event_times(event);
- local_irq_restore(flags);
+ spin_unlock(&ctx->lock);
+
+ event->pmu->read(event);
}
static u64 perf_event_read(struct perf_event *event)
@@ -1545,7 +1560,13 @@ static u64 perf_event_read(struct perf_event *event)
smp_call_function_single(event->oncpu,
__perf_event_read, event, 1);
} else if (event->state == PERF_EVENT_STATE_INACTIVE) {
+ struct perf_event_context *ctx = event->ctx;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ctx->lock, flags);
+ update_context_time(ctx);
update_event_times(event);
+ spin_unlock_irqrestore(&ctx->lock, flags);
}
return atomic64_read(&event->count);
@@ -1658,6 +1679,8 @@ static struct perf_event_context *find_get_context(pid_t pid, int cpu)
return ERR_PTR(err);
}
+static void perf_event_free_filter(struct perf_event *event);
+
static void free_event_rcu(struct rcu_head *head)
{
struct perf_event *event;
@@ -1665,6 +1688,7 @@ static void free_event_rcu(struct rcu_head *head)
event = container_of(head, struct perf_event, rcu_head);
if (event->ns)
put_pid_ns(event->ns);
+ perf_event_free_filter(event);
kfree(event);
}
@@ -1696,16 +1720,10 @@ static void free_event(struct perf_event *event)
call_rcu(&event->rcu_head, free_event_rcu);
}
-/*
- * Called when the last reference to the file is gone.
- */
-static int perf_release(struct inode *inode, struct file *file)
+int perf_event_release_kernel(struct perf_event *event)
{
- struct perf_event *event = file->private_data;
struct perf_event_context *ctx = event->ctx;
- file->private_data = NULL;
-
WARN_ON_ONCE(ctx->parent_ctx);
mutex_lock(&ctx->mutex);
perf_event_remove_from_context(event);
@@ -1720,6 +1738,19 @@ static int perf_release(struct inode *inode, struct file *file)
return 0;
}
+EXPORT_SYMBOL_GPL(perf_event_release_kernel);
+
+/*
+ * Called when the last reference to the file is gone.
+ */
+static int perf_release(struct inode *inode, struct file *file)
+{
+ struct perf_event *event = file->private_data;
+
+ file->private_data = NULL;
+
+ return perf_event_release_kernel(event);
+}
static int perf_event_read_size(struct perf_event *event)
{
@@ -1746,91 +1777,94 @@ static int perf_event_read_size(struct perf_event *event)
return size;
}
-static u64 perf_event_read_value(struct perf_event *event)
+u64 perf_event_read_value(struct perf_event *event, u64 *enabled, u64 *running)
{
struct perf_event *child;
u64 total = 0;
+ *enabled = 0;
+ *running = 0;
+
+ mutex_lock(&event->child_mutex);
total += perf_event_read(event);
- list_for_each_entry(child, &event->child_list, child_list)
+ *enabled += event->total_time_enabled +
+ atomic64_read(&event->child_total_time_enabled);
+ *running += event->total_time_running +
+ atomic64_read(&event->child_total_time_running);
+
+ list_for_each_entry(child, &event->child_list, child_list) {
total += perf_event_read(child);
+ *enabled += child->total_time_enabled;
+ *running += child->total_time_running;
+ }
+ mutex_unlock(&event->child_mutex);
return total;
}
-
-static int perf_event_read_entry(struct perf_event *event,
- u64 read_format, char __user *buf)
-{
- int n = 0, count = 0;
- u64 values[2];
-
- values[n++] = perf_event_read_value(event);
- if (read_format & PERF_FORMAT_ID)
- values[n++] = primary_event_id(event);
-
- count = n * sizeof(u64);
-
- if (copy_to_user(buf, values, count))
- return -EFAULT;
-
- return count;
-}
+EXPORT_SYMBOL_GPL(perf_event_read_value);
static int perf_event_read_group(struct perf_event *event,
u64 read_format, char __user *buf)
{
struct perf_event *leader = event->group_leader, *sub;
- int n = 0, size = 0, err = -EFAULT;
- u64 values[3];
+ int n = 0, size = 0, ret = -EFAULT;
+ struct perf_event_context *ctx = leader->ctx;
+ u64 values[5];
+ u64 count, enabled, running;
+
+ mutex_lock(&ctx->mutex);
+ count = perf_event_read_value(leader, &enabled, &running);
values[n++] = 1 + leader->nr_siblings;
- if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
- values[n++] = leader->total_time_enabled +
- atomic64_read(&leader->child_total_time_enabled);
- }
- if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
- values[n++] = leader->total_time_running +
- atomic64_read(&leader->child_total_time_running);
- }
+ if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
+ values[n++] = enabled;
+ if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
+ values[n++] = running;
+ values[n++] = count;
+ if (read_format & PERF_FORMAT_ID)
+ values[n++] = primary_event_id(leader);
size = n * sizeof(u64);
if (copy_to_user(buf, values, size))
- return -EFAULT;
-
- err = perf_event_read_entry(leader, read_format, buf + size);
- if (err < 0)
- return err;
+ goto unlock;
- size += err;
+ ret = size;
list_for_each_entry(sub, &leader->sibling_list, group_entry) {
- err = perf_event_read_entry(sub, read_format,
- buf + size);
- if (err < 0)
- return err;
+ n = 0;
+
+ values[n++] = perf_event_read_value(sub, &enabled, &running);
+ if (read_format & PERF_FORMAT_ID)
+ values[n++] = primary_event_id(sub);
+
+ size = n * sizeof(u64);
- size += err;
+ if (copy_to_user(buf + ret, values, size)) {
+ ret = -EFAULT;
+ goto unlock;
+ }
+
+ ret += size;
}
+unlock:
+ mutex_unlock(&ctx->mutex);
- return size;
+ return ret;
}
static int perf_event_read_one(struct perf_event *event,
u64 read_format, char __user *buf)
{
+ u64 enabled, running;
u64 values[4];
int n = 0;
- values[n++] = perf_event_read_value(event);
- if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
- values[n++] = event->total_time_enabled +
- atomic64_read(&event->child_total_time_enabled);
- }
- if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
- values[n++] = event->total_time_running +
- atomic64_read(&event->child_total_time_running);
- }
+ values[n++] = perf_event_read_value(event, &enabled, &running);
+ if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
+ values[n++] = enabled;
+ if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
+ values[n++] = running;
if (read_format & PERF_FORMAT_ID)
values[n++] = primary_event_id(event);
@@ -1861,12 +1895,10 @@ perf_read_hw(struct perf_event *event, char __user *buf, size_t count)
return -ENOSPC;
WARN_ON_ONCE(event->ctx->parent_ctx);
- mutex_lock(&event->child_mutex);
if (read_format & PERF_FORMAT_GROUP)
ret = perf_event_read_group(event, read_format, buf);
else
ret = perf_event_read_one(event, read_format, buf);
- mutex_unlock(&event->child_mutex);
return ret;
}
@@ -1974,7 +2006,8 @@ static int perf_event_period(struct perf_event *event, u64 __user *arg)
return ret;
}
-int perf_event_set_output(struct perf_event *event, int output_fd);
+static int perf_event_set_output(struct perf_event *event, int output_fd);
+static int perf_event_set_filter(struct perf_event *event, void __user *arg);
static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
@@ -2002,6 +2035,9 @@ static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
case PERF_EVENT_IOC_SET_OUTPUT:
return perf_event_set_output(event, arg);
+ case PERF_EVENT_IOC_SET_FILTER:
+ return perf_event_set_filter(event, (void __user *)arg);
+
default:
return -ENOTTY;
}
@@ -2174,6 +2210,7 @@ static void perf_mmap_data_free(struct perf_mmap_data *data)
perf_mmap_free_page((unsigned long)data->user_page);
for (i = 0; i < data->nr_pages; i++)
perf_mmap_free_page((unsigned long)data->data_pages[i]);
+ kfree(data);
}
#else
@@ -2214,6 +2251,7 @@ static void perf_mmap_data_free_work(struct work_struct *work)
perf_mmap_unmark_page(base + (i * PAGE_SIZE));
vfree(base);
+ kfree(data);
}
static void perf_mmap_data_free(struct perf_mmap_data *data)
@@ -2307,7 +2345,7 @@ perf_mmap_data_init(struct perf_event *event, struct perf_mmap_data *data)
}
if (!data->watermark)
- data->watermark = max_t(long, PAGE_SIZE, max_size / 2);
+ data->watermark = max_size / 2;
rcu_assign_pointer(event->data, data);
@@ -2319,7 +2357,6 @@ static void perf_mmap_data_free_rcu(struct rcu_head *rcu_head)
data = container_of(rcu_head, struct perf_mmap_data, rcu_head);
perf_mmap_data_free(data);
- kfree(data);
}
static void perf_mmap_data_release(struct perf_event *event)
@@ -2666,20 +2703,21 @@ static void perf_output_wakeup(struct perf_output_handle *handle)
static void perf_output_lock(struct perf_output_handle *handle)
{
struct perf_mmap_data *data = handle->data;
- int cpu;
+ int cur, cpu = get_cpu();
handle->locked = 0;
- local_irq_save(handle->flags);
- cpu = smp_processor_id();
-
- if (in_nmi() && atomic_read(&data->lock) == cpu)
- return;
+ for (;;) {
+ cur = atomic_cmpxchg(&data->lock, -1, cpu);
+ if (cur == -1) {
+ handle->locked = 1;
+ break;
+ }
+ if (cur == cpu)
+ break;
- while (atomic_cmpxchg(&data->lock, -1, cpu) != -1)
cpu_relax();
-
- handle->locked = 1;
+ }
}
static void perf_output_unlock(struct perf_output_handle *handle)
@@ -2725,7 +2763,7 @@ static void perf_output_unlock(struct perf_output_handle *handle)
if (atomic_xchg(&data->wakeup, 0))
perf_output_wakeup(handle);
out:
- local_irq_restore(handle->flags);
+ put_cpu();
}
void perf_output_copy(struct perf_output_handle *handle,
@@ -3236,15 +3274,10 @@ static void perf_event_task_ctx(struct perf_event_context *ctx,
{
struct perf_event *event;
- if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list))
- return;
-
- rcu_read_lock();
list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
if (perf_event_task_match(event))
perf_event_task_output(event, task_event);
}
- rcu_read_unlock();
}
static void perf_event_task_event(struct perf_task_event *task_event)
@@ -3252,11 +3285,11 @@ static void perf_event_task_event(struct perf_task_event *task_event)
struct perf_cpu_context *cpuctx;
struct perf_event_context *ctx = task_event->task_ctx;
+ rcu_read_lock();
cpuctx = &get_cpu_var(perf_cpu_context);
perf_event_task_ctx(&cpuctx->ctx, task_event);
put_cpu_var(perf_cpu_context);
- rcu_read_lock();
if (!ctx)
ctx = rcu_dereference(task_event->task->perf_event_ctxp);
if (ctx)
@@ -3348,15 +3381,10 @@ static void perf_event_comm_ctx(struct perf_event_context *ctx,
{
struct perf_event *event;
- if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list))
- return;
-
- rcu_read_lock();
list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
if (perf_event_comm_match(event))
perf_event_comm_output(event, comm_event);
}
- rcu_read_unlock();
}
static void perf_event_comm_event(struct perf_comm_event *comm_event)
@@ -3367,7 +3395,7 @@ static void perf_event_comm_event(struct perf_comm_event *comm_event)
char comm[TASK_COMM_LEN];
memset(comm, 0, sizeof(comm));
- strncpy(comm, comm_event->task->comm, sizeof(comm));
+ strlcpy(comm, comm_event->task->comm, sizeof(comm));
size = ALIGN(strlen(comm)+1, sizeof(u64));
comm_event->comm = comm;
@@ -3375,11 +3403,11 @@ static void perf_event_comm_event(struct perf_comm_event *comm_event)
comm_event->event_id.header.size = sizeof(comm_event->event_id) + size;
+ rcu_read_lock();
cpuctx = &get_cpu_var(perf_cpu_context);
perf_event_comm_ctx(&cpuctx->ctx, comm_event);
put_cpu_var(perf_cpu_context);
- rcu_read_lock();
/*
* doesn't really matter which of the child contexts the
* events ends up in.
@@ -3472,15 +3500,10 @@ static void perf_event_mmap_ctx(struct perf_event_context *ctx,
{
struct perf_event *event;
- if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list))
- return;
-
- rcu_read_lock();
list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
if (perf_event_mmap_match(event, mmap_event))
perf_event_mmap_output(event, mmap_event);
}
- rcu_read_unlock();
}
static void perf_event_mmap_event(struct perf_mmap_event *mmap_event)
@@ -3536,11 +3559,11 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event)
mmap_event->event_id.header.size = sizeof(mmap_event->event_id) + size;
+ rcu_read_lock();
cpuctx = &get_cpu_var(perf_cpu_context);
perf_event_mmap_ctx(&cpuctx->ctx, mmap_event);
put_cpu_var(perf_cpu_context);
- rcu_read_lock();
/*
* doesn't really matter which of the child contexts the
* events ends up in.
@@ -3679,7 +3702,11 @@ static int __perf_event_overflow(struct perf_event *event, int nmi,
perf_event_disable(event);
}
- perf_event_output(event, nmi, data, regs);
+ if (event->overflow_handler)
+ event->overflow_handler(event, nmi, data, regs);
+ else
+ perf_event_output(event, nmi, data, regs);
+
return ret;
}
@@ -3724,16 +3751,16 @@ static u64 perf_swevent_set_period(struct perf_event *event)
return nr;
}
-static void perf_swevent_overflow(struct perf_event *event,
+static void perf_swevent_overflow(struct perf_event *event, u64 overflow,
int nmi, struct perf_sample_data *data,
struct pt_regs *regs)
{
struct hw_perf_event *hwc = &event->hw;
int throttle = 0;
- u64 overflow;
data->period = event->hw.last_period;
- overflow = perf_swevent_set_period(event);
+ if (!overflow)
+ overflow = perf_swevent_set_period(event);
if (hwc->interrupts == MAX_INTERRUPTS)
return;
@@ -3766,14 +3793,19 @@ static void perf_swevent_add(struct perf_event *event, u64 nr,
atomic64_add(nr, &event->count);
+ if (!regs)
+ return;
+
if (!hwc->sample_period)
return;
- if (!regs)
+ if (nr == 1 && hwc->sample_period == 1 && !event->attr.freq)
+ return perf_swevent_overflow(event, 1, nmi, data, regs);
+
+ if (atomic64_add_negative(nr, &hwc->period_left))
return;
- if (!atomic64_add_negative(nr, &hwc->period_left))
- perf_swevent_overflow(event, nmi, data, regs);
+ perf_swevent_overflow(event, 0, nmi, data, regs);
}
static int perf_swevent_is_counting(struct perf_event *event)
@@ -3806,25 +3838,44 @@ static int perf_swevent_is_counting(struct perf_event *event)
return 1;
}
+static int perf_tp_event_match(struct perf_event *event,
+ struct perf_sample_data *data);
+
+static int perf_exclude_event(struct perf_event *event,
+ struct pt_regs *regs)
+{
+ if (regs) {
+ if (event->attr.exclude_user && user_mode(regs))
+ return 1;
+
+ if (event->attr.exclude_kernel && !user_mode(regs))
+ return 1;
+ }
+
+ return 0;
+}
+
static int perf_swevent_match(struct perf_event *event,
enum perf_type_id type,
- u32 event_id, struct pt_regs *regs)
+ u32 event_id,
+ struct perf_sample_data *data,
+ struct pt_regs *regs)
{
if (!perf_swevent_is_counting(event))
return 0;
if (event->attr.type != type)
return 0;
+
if (event->attr.config != event_id)
return 0;
- if (regs) {
- if (event->attr.exclude_user && user_mode(regs))
- return 0;
+ if (perf_exclude_event(event, regs))
+ return 0;
- if (event->attr.exclude_kernel && !user_mode(regs))
- return 0;
- }
+ if (event->attr.type == PERF_TYPE_TRACEPOINT &&
+ !perf_tp_event_match(event, data))
+ return 0;
return 1;
}
@@ -3837,49 +3888,59 @@ static void perf_swevent_ctx_event(struct perf_event_context *ctx,
{
struct perf_event *event;
- if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list))
- return;
-
- rcu_read_lock();
list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
- if (perf_swevent_match(event, type, event_id, regs))
+ if (perf_swevent_match(event, type, event_id, data, regs))
perf_swevent_add(event, nr, nmi, data, regs);
}
- rcu_read_unlock();
}
-static int *perf_swevent_recursion_context(struct perf_cpu_context *cpuctx)
+int perf_swevent_get_recursion_context(void)
{
+ struct perf_cpu_context *cpuctx = &get_cpu_var(perf_cpu_context);
+ int rctx;
+
if (in_nmi())
- return &cpuctx->recursion[3];
+ rctx = 3;
+ else if (in_irq())
+ rctx = 2;
+ else if (in_softirq())
+ rctx = 1;
+ else
+ rctx = 0;
+
+ if (cpuctx->recursion[rctx]) {
+ put_cpu_var(perf_cpu_context);
+ return -1;
+ }
- if (in_irq())
- return &cpuctx->recursion[2];
+ cpuctx->recursion[rctx]++;
+ barrier();
- if (in_softirq())
- return &cpuctx->recursion[1];
+ return rctx;
+}
+EXPORT_SYMBOL_GPL(perf_swevent_get_recursion_context);
- return &cpuctx->recursion[0];
+void perf_swevent_put_recursion_context(int rctx)
+{
+ struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
+ barrier();
+ cpuctx->recursion[rctx]--;
+ put_cpu_var(perf_cpu_context);
}
+EXPORT_SYMBOL_GPL(perf_swevent_put_recursion_context);
static void do_perf_sw_event(enum perf_type_id type, u32 event_id,
u64 nr, int nmi,
struct perf_sample_data *data,
struct pt_regs *regs)
{
- struct perf_cpu_context *cpuctx = &get_cpu_var(perf_cpu_context);
- int *recursion = perf_swevent_recursion_context(cpuctx);
+ struct perf_cpu_context *cpuctx;
struct perf_event_context *ctx;
- if (*recursion)
- goto out;
-
- (*recursion)++;
- barrier();
-
+ cpuctx = &__get_cpu_var(perf_cpu_context);
+ rcu_read_lock();
perf_swevent_ctx_event(&cpuctx->ctx, type, event_id,
nr, nmi, data, regs);
- rcu_read_lock();
/*
* doesn't really matter which of the child contexts the
* events ends up in.
@@ -3888,23 +3949,24 @@ static void do_perf_sw_event(enum perf_type_id type, u32 event_id,
if (ctx)
perf_swevent_ctx_event(ctx, type, event_id, nr, nmi, data, regs);
rcu_read_unlock();
-
- barrier();
- (*recursion)--;
-
-out:
- put_cpu_var(perf_cpu_context);
}
void __perf_sw_event(u32 event_id, u64 nr, int nmi,
struct pt_regs *regs, u64 addr)
{
- struct perf_sample_data data = {
- .addr = addr,
- };
+ struct perf_sample_data data;
+ int rctx;
- do_perf_sw_event(PERF_TYPE_SOFTWARE, event_id, nr, nmi,
- &data, regs);
+ rctx = perf_swevent_get_recursion_context();
+ if (rctx < 0)
+ return;
+
+ data.addr = addr;
+ data.raw = NULL;
+
+ do_perf_sw_event(PERF_TYPE_SOFTWARE, event_id, nr, nmi, &data, regs);
+
+ perf_swevent_put_recursion_context(rctx);
}
static void perf_swevent_read(struct perf_event *event)
@@ -3949,6 +4011,7 @@ static enum hrtimer_restart perf_swevent_hrtimer(struct hrtimer *hrtimer)
event->pmu->read(event);
data.addr = 0;
+ data.period = event->hw.last_period;
regs = get_irq_regs();
/*
* In case we exclude kernel IPs or are somehow not in interrupt
@@ -4108,6 +4171,7 @@ static const struct pmu perf_ops_task_clock = {
};
#ifdef CONFIG_EVENT_PROFILE
+
void perf_tp_event(int event_id, u64 addr, u64 count, void *record,
int entry_size)
{
@@ -4126,13 +4190,21 @@ void perf_tp_event(int event_id, u64 addr, u64 count, void *record,
if (!regs)
regs = task_pt_regs(current);
+ /* Trace events already protected against recursion */
do_perf_sw_event(PERF_TYPE_TRACEPOINT, event_id, count, 1,
&data, regs);
}
EXPORT_SYMBOL_GPL(perf_tp_event);
-extern int ftrace_profile_enable(int);
-extern void ftrace_profile_disable(int);
+static int perf_tp_event_match(struct perf_event *event,
+ struct perf_sample_data *data)
+{
+ void *record = data->raw->data;
+
+ if (likely(!event->filter) || filter_match_preds(event->filter, record))
+ return 1;
+ return 0;
+}
static void tp_perf_event_destroy(struct perf_event *event)
{
@@ -4157,11 +4229,99 @@ static const struct pmu *tp_perf_event_init(struct perf_event *event)
return &perf_ops_generic;
}
+
+static int perf_event_set_filter(struct perf_event *event, void __user *arg)
+{
+ char *filter_str;
+ int ret;
+
+ if (event->attr.type != PERF_TYPE_TRACEPOINT)
+ return -EINVAL;
+
+ filter_str = strndup_user(arg, PAGE_SIZE);
+ if (IS_ERR(filter_str))
+ return PTR_ERR(filter_str);
+
+ ret = ftrace_profile_set_filter(event, event->attr.config, filter_str);
+
+ kfree(filter_str);
+ return ret;
+}
+
+static void perf_event_free_filter(struct perf_event *event)
+{
+ ftrace_profile_free_filter(event);
+}
+
#else
+
+static int perf_tp_event_match(struct perf_event *event,
+ struct perf_sample_data *data)
+{
+ return 1;
+}
+
static const struct pmu *tp_perf_event_init(struct perf_event *event)
{
return NULL;
}
+
+static int perf_event_set_filter(struct perf_event *event, void __user *arg)
+{
+ return -ENOENT;
+}
+
+static void perf_event_free_filter(struct perf_event *event)
+{
+}
+
+#endif /* CONFIG_EVENT_PROFILE */
+
+#ifdef CONFIG_HAVE_HW_BREAKPOINT
+static void bp_perf_event_destroy(struct perf_event *event)
+{
+ release_bp_slot(event);
+}
+
+static const struct pmu *bp_perf_event_init(struct perf_event *bp)
+{
+ int err;
+ /*
+ * The breakpoint is already filled if we haven't created the counter
+ * through perf syscall
+ * FIXME: manage to get trigerred to NULL if it comes from syscalls
+ */
+ if (!bp->callback)
+ err = register_perf_hw_breakpoint(bp);
+ else
+ err = __register_perf_hw_breakpoint(bp);
+ if (err)
+ return ERR_PTR(err);
+
+ bp->destroy = bp_perf_event_destroy;
+
+ return &perf_ops_bp;
+}
+
+void perf_bp_event(struct perf_event *bp, void *data)
+{
+ struct perf_sample_data sample;
+ struct pt_regs *regs = data;
+
+ sample.addr = bp->attr.bp_addr;
+
+ if (!perf_exclude_event(bp, regs))
+ perf_swevent_add(bp, 1, 1, &sample, regs);
+}
+#else
+static const struct pmu *bp_perf_event_init(struct perf_event *bp)
+{
+ return NULL;
+}
+
+void perf_bp_event(struct perf_event *bp, void *regs)
+{
+}
#endif
atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX];
@@ -4208,6 +4368,8 @@ static const struct pmu *sw_perf_event_init(struct perf_event *event)
case PERF_COUNT_SW_PAGE_FAULTS_MAJ:
case PERF_COUNT_SW_CONTEXT_SWITCHES:
case PERF_COUNT_SW_CPU_MIGRATIONS:
+ case PERF_COUNT_SW_ALIGNMENT_FAULTS:
+ case PERF_COUNT_SW_EMULATION_FAULTS:
if (!event->parent) {
atomic_inc(&perf_swevent_enabled[event_id]);
event->destroy = sw_perf_event_destroy;
@@ -4228,6 +4390,7 @@ perf_event_alloc(struct perf_event_attr *attr,
struct perf_event_context *ctx,
struct perf_event *group_leader,
struct perf_event *parent_event,
+ perf_callback_t callback,
gfp_t gfpflags)
{
const struct pmu *pmu;
@@ -4270,6 +4433,11 @@ perf_event_alloc(struct perf_event_attr *attr,
event->state = PERF_EVENT_STATE_INACTIVE;
+ if (!callback && parent_event)
+ callback = parent_event->callback;
+
+ event->callback = callback;
+
if (attr->disabled)
event->state = PERF_EVENT_STATE_OFF;
@@ -4304,6 +4472,11 @@ perf_event_alloc(struct perf_event_attr *attr,
pmu = tp_perf_event_init(event);
break;
+ case PERF_TYPE_BREAKPOINT:
+ pmu = bp_perf_event_init(event);
+ break;
+
+
default:
break;
}
@@ -4416,7 +4589,7 @@ static int perf_copy_attr(struct perf_event_attr __user *uattr,
goto out;
}
-int perf_event_set_output(struct perf_event *event, int output_fd)
+static int perf_event_set_output(struct perf_event *event, int output_fd)
{
struct perf_event *output_event = NULL;
struct file *output_file = NULL;
@@ -4546,7 +4719,7 @@ SYSCALL_DEFINE5(perf_event_open,
}
event = perf_event_alloc(&attr, cpu, ctx, group_leader,
- NULL, GFP_KERNEL);
+ NULL, NULL, GFP_KERNEL);
err = PTR_ERR(event);
if (IS_ERR(event))
goto err_put_context;
@@ -4594,6 +4767,60 @@ SYSCALL_DEFINE5(perf_event_open,
return err;
}
+/**
+ * perf_event_create_kernel_counter
+ *
+ * @attr: attributes of the counter to create
+ * @cpu: cpu in which the counter is bound
+ * @pid: task to profile
+ */
+struct perf_event *
+perf_event_create_kernel_counter(struct perf_event_attr *attr, int cpu,
+ pid_t pid, perf_callback_t callback)
+{
+ struct perf_event *event;
+ struct perf_event_context *ctx;
+ int err;
+
+ /*
+ * Get the target context (task or percpu):
+ */
+
+ ctx = find_get_context(pid, cpu);
+ if (IS_ERR(ctx)) {
+ err = PTR_ERR(ctx);
+ goto err_exit;
+ }
+
+ event = perf_event_alloc(attr, cpu, ctx, NULL,
+ NULL, callback, GFP_KERNEL);
+ if (IS_ERR(event)) {
+ err = PTR_ERR(event);
+ goto err_put_context;
+ }
+
+ event->filp = NULL;
+ WARN_ON_ONCE(ctx->parent_ctx);
+ mutex_lock(&ctx->mutex);
+ perf_install_in_context(ctx, event, cpu);
+ ++ctx->generation;
+ mutex_unlock(&ctx->mutex);
+
+ event->owner = current;
+ get_task_struct(current);
+ mutex_lock(¤t->perf_event_mutex);
+ list_add_tail(&event->owner_entry, ¤t->perf_event_list);
+ mutex_unlock(¤t->perf_event_mutex);
+
+ return event;
+
+ err_put_context:
+ put_ctx(ctx);
+ err_exit:
+ return ERR_PTR(err);
+}
+EXPORT_SYMBOL_GPL(perf_event_create_kernel_counter);
+
/*
* inherit a event from parent task to child task:
*/
@@ -4619,7 +4846,7 @@ inherit_event(struct perf_event *parent_event,
child_event = perf_event_alloc(&parent_event->attr,
parent_event->cpu, child_ctx,
group_leader, parent_event,
- GFP_KERNEL);
+ NULL, GFP_KERNEL);
if (IS_ERR(child_event))
return child_event;
get_ctx(child_ctx);
@@ -4637,6 +4864,8 @@ inherit_event(struct perf_event *parent_event,
if (parent_event->attr.freq)
child_event->hw.sample_period = parent_event->hw.sample_period;
+ child_event->overflow_handler = parent_event->overflow_handler;
+
/*
* Link it up in the child's context:
*/
@@ -4726,7 +4955,6 @@ __perf_event_exit_task(struct perf_event *child_event,
{
struct perf_event *parent_event;
- update_event_times(child_event);
perf_event_remove_from_context(child_event);
parent_event = child_event->parent;
@@ -4778,6 +5006,7 @@ void perf_event_exit_task(struct task_struct *child)
* the events from it.
*/
unclone_ctx(child_ctx);
+ update_context_time(child_ctx);
spin_unlock_irqrestore(&child_ctx->lock, flags);
/*
diff --git a/kernel/signal.c b/kernel/signal.c
index fe08008133dad06e0acd6efdc98db25c64367565..6b982f2cf524d82e6b72f276f7d9010df9007e47 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -28,7 +28,8 @@
#include
#include
#include
-#include
+#define CREATE_TRACE_POINTS
+#include
#include
#include
@@ -856,7 +857,7 @@ static int __send_signal(int sig, struct siginfo *info, struct task_struct *t,
struct sigqueue *q;
int override_rlimit;
- trace_sched_signal_send(sig, t);
+ trace_signal_generate(sig, info, t);
assert_spin_locked(&t->sighand->siglock);
@@ -918,12 +919,21 @@ static int __send_signal(int sig, struct siginfo *info, struct task_struct *t,
break;
}
} else if (!is_si_special(info)) {
- if (sig >= SIGRTMIN && info->si_code != SI_USER)
- /*
- * Queue overflow, abort. We may abort if the signal was rt
- * and sent by user using something other than kill().
- */
+ if (sig >= SIGRTMIN && info->si_code != SI_USER) {
+ /*
+ * Queue overflow, abort. We may abort if the
+ * signal was rt and sent by user using something
+ * other than kill().
+ */
+ trace_signal_overflow_fail(sig, group, info);
return -EAGAIN;
+ } else {
+ /*
+ * This is a silent loss of information. We still
+ * send the signal, but the *info bits are lost.
+ */
+ trace_signal_lose_info(sig, group, info);
+ }
}
out_set:
@@ -1859,6 +1869,9 @@ int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka,
ka = &sighand->action[signr-1];
}
+ /* Trace actually delivered signals. */
+ trace_signal_deliver(signr, info, ka);
+
if (ka->sa.sa_handler == SIG_IGN) /* Do nothing. */
continue;
if (ka->sa.sa_handler != SIG_DFL) {
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index b416512ad17ff77eea13b6b391d907f32f76143b..d006554888dc68752a8813e5f6063379c2d98f47 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -339,6 +339,27 @@ config POWER_TRACER
power management decisions, specifically the C-state and P-state
behavior.
+config KSYM_TRACER
+ bool "Trace read and write access on kernel memory locations"
+ depends on HAVE_HW_BREAKPOINT
+ select TRACING
+ help
+ This tracer helps find read and write operations on any given kernel
+ symbol i.e. /proc/kallsyms.
+
+config PROFILE_KSYM_TRACER
+ bool "Profile all kernel memory accesses on 'watched' variables"
+ depends on KSYM_TRACER
+ help
+ This tracer profiles kernel accesses on variables watched through the
+ ksym tracer ftrace plugin. Depending upon the hardware, all read
+ and write operations on kernel variables can be monitored for
+ accesses.
+
+ The results will be displayed in:
+ /debugfs/tracing/profile_ksym
+
+ Say N if unsure.
config STACK_TRACER
bool "Trace max stack"
@@ -428,6 +449,23 @@ config BLK_DEV_IO_TRACE
If unsure, say N.
+config KPROBE_EVENT
+ depends on KPROBES
+ depends on X86
+ bool "Enable kprobes-based dynamic events"
+ select TRACING
+ default y
+ help
+ This allows the user to add tracing events (similar to tracepoints) on the fly
+ via the ftrace interface. See Documentation/trace/kprobetrace.txt
+ for more details.
+
+ Those events can be inserted wherever kprobes can probe, and record
+ various register and memory values.
+
+ This option is also required by perf-probe subcommand of perf tools. If
+ you want to use perf tools, this option is strongly recommended.
+
config DYNAMIC_FTRACE
bool "enable/disable ftrace tracepoints dynamically"
depends on FUNCTION_TRACER
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile
index 26f03ac07c2bc2164ce809cea5a48fce15d09ff1..cd9ecd89ec7714d34f16fd541beabd9ce0e504d2 100644
--- a/kernel/trace/Makefile
+++ b/kernel/trace/Makefile
@@ -53,6 +53,8 @@ obj-$(CONFIG_EVENT_TRACING) += trace_export.o
obj-$(CONFIG_FTRACE_SYSCALLS) += trace_syscalls.o
obj-$(CONFIG_EVENT_PROFILE) += trace_event_profile.o
obj-$(CONFIG_EVENT_TRACING) += trace_events_filter.o
+obj-$(CONFIG_KPROBE_EVENT) += trace_kprobe.o
+obj-$(CONFIG_KSYM_TRACER) += trace_ksym.o
obj-$(CONFIG_EVENT_TRACING) += power-traces.o
libftrace-y := ftrace.o
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index a72c6e03deecb5224c568ba61f2e123a87bec1a8..a1ca4956ab5ec3673b04ddd839dd9edec26d1bf4 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -397,18 +397,21 @@ int ring_buffer_print_page_header(struct trace_seq *s)
int ret;
ret = trace_seq_printf(s, "\tfield: u64 timestamp;\t"
- "offset:0;\tsize:%u;\n",
- (unsigned int)sizeof(field.time_stamp));
+ "offset:0;\tsize:%u;\tsigned:%u;\n",
+ (unsigned int)sizeof(field.time_stamp),
+ (unsigned int)is_signed_type(u64));
ret = trace_seq_printf(s, "\tfield: local_t commit;\t"
- "offset:%u;\tsize:%u;\n",
+ "offset:%u;\tsize:%u;\tsigned:%u;\n",
(unsigned int)offsetof(typeof(field), commit),
- (unsigned int)sizeof(field.commit));
+ (unsigned int)sizeof(field.commit),
+ (unsigned int)is_signed_type(long));
ret = trace_seq_printf(s, "\tfield: char data;\t"
- "offset:%u;\tsize:%u;\n",
+ "offset:%u;\tsize:%u;\tsigned:%u;\n",
(unsigned int)offsetof(typeof(field), data),
- (unsigned int)BUF_PAGE_SIZE);
+ (unsigned int)BUF_PAGE_SIZE,
+ (unsigned int)is_signed_type(char));
return ret;
}
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index acef8b4636f0b605d640567a29096fe6200cec19..1d7f4830a80d93dd2b3c77a837ad18c5123819fc 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -11,6 +11,7 @@
#include
#include
#include
+#include
#include
#include
@@ -37,6 +38,7 @@ enum trace_type {
TRACE_KMEM_ALLOC,
TRACE_KMEM_FREE,
TRACE_BLK,
+ TRACE_KSYM,
__TRACE_LAST_TYPE,
};
@@ -98,9 +100,32 @@ struct syscall_trace_enter {
struct syscall_trace_exit {
struct trace_entry ent;
int nr;
- unsigned long ret;
+ long ret;
};
+struct kprobe_trace_entry {
+ struct trace_entry ent;
+ unsigned long ip;
+ int nargs;
+ unsigned long args[];
+};
+
+#define SIZEOF_KPROBE_TRACE_ENTRY(n) \
+ (offsetof(struct kprobe_trace_entry, args) + \
+ (sizeof(unsigned long) * (n)))
+
+struct kretprobe_trace_entry {
+ struct trace_entry ent;
+ unsigned long func;
+ unsigned long ret_ip;
+ int nargs;
+ unsigned long args[];
+};
+
+#define SIZEOF_KRETPROBE_TRACE_ENTRY(n) \
+ (offsetof(struct kretprobe_trace_entry, args) + \
+ (sizeof(unsigned long) * (n)))
+
/*
* trace_flag_type is an enumeration that holds different
* states when a trace occurs. These are:
@@ -209,6 +234,7 @@ extern void __ftrace_bad_type(void);
TRACE_KMEM_ALLOC); \
IF_ASSIGN(var, ent, struct kmemtrace_free_entry, \
TRACE_KMEM_FREE); \
+ IF_ASSIGN(var, ent, struct ksym_trace_entry, TRACE_KSYM);\
__ftrace_bad_type(); \
} while (0)
@@ -364,6 +390,8 @@ int register_tracer(struct tracer *type);
void unregister_tracer(struct tracer *type);
int is_tracing_stopped(void);
+extern int process_new_ksym_entry(char *ksymname, int op, unsigned long addr);
+
extern unsigned long nsecs_to_usecs(unsigned long nsecs);
#ifdef CONFIG_TRACER_MAX_TRACE
@@ -438,6 +466,8 @@ extern int trace_selftest_startup_branch(struct tracer *trace,
struct trace_array *tr);
extern int trace_selftest_startup_hw_branches(struct tracer *trace,
struct trace_array *tr);
+extern int trace_selftest_startup_ksym(struct tracer *trace,
+ struct trace_array *tr);
#endif /* CONFIG_FTRACE_STARTUP_TEST */
extern void *head_page(struct trace_array_cpu *data);
@@ -683,7 +713,6 @@ struct event_filter {
int n_preds;
struct filter_pred **preds;
char *filter_string;
- bool no_reset;
};
struct event_subsystem {
@@ -703,7 +732,7 @@ typedef int (*filter_pred_fn_t) (struct filter_pred *pred, void *event,
typedef int (*regex_match_func)(char *str, struct regex *r, int len);
enum regex_type {
- MATCH_FULL,
+ MATCH_FULL = 0,
MATCH_FRONT_ONLY,
MATCH_MIDDLE_ONLY,
MATCH_END_ONLY,
@@ -744,7 +773,8 @@ filter_check_discard(struct ftrace_event_call *call, void *rec,
struct ring_buffer *buffer,
struct ring_buffer_event *event)
{
- if (unlikely(call->filter_active) && !filter_match_preds(call, rec)) {
+ if (unlikely(call->filter_active) &&
+ !filter_match_preds(call->filter, rec)) {
ring_buffer_discard_commit(buffer, event);
return 1;
}
diff --git a/kernel/trace/trace_entries.h b/kernel/trace/trace_entries.h
index ead3d724599d2d701b29014c1eb575529162d4f9..c16a08f399df53e9d9728d11e039f485b72e4986 100644
--- a/kernel/trace/trace_entries.h
+++ b/kernel/trace/trace_entries.h
@@ -364,3 +364,19 @@ FTRACE_ENTRY(kmem_free, kmemtrace_free_entry,
F_printk("type:%u call_site:%lx ptr:%p",
__entry->type_id, __entry->call_site, __entry->ptr)
);
+
+FTRACE_ENTRY(ksym_trace, ksym_trace_entry,
+
+ TRACE_KSYM,
+
+ F_STRUCT(
+ __field( unsigned long, ip )
+ __field( unsigned char, type )
+ __array( char , cmd, TASK_COMM_LEN )
+ __field( unsigned long, addr )
+ ),
+
+ F_printk("ip: %pF type: %d ksym_name: %pS cmd: %s",
+ (void *)__entry->ip, (unsigned int)__entry->type,
+ (void *)__entry->addr, __entry->cmd)
+);
diff --git a/kernel/trace/trace_event_profile.c b/kernel/trace/trace_event_profile.c
index 8d5c171cc9987d924f9fcfd3328fcb966288b9a0..d9c60f80aa0d20958c647a86310b29701b4bcdcc 100644
--- a/kernel/trace/trace_event_profile.c
+++ b/kernel/trace/trace_event_profile.c
@@ -8,17 +8,14 @@
#include
#include "trace.h"
-/*
- * We can't use a size but a type in alloc_percpu()
- * So let's create a dummy type that matches the desired size
- */
-typedef struct {char buf[FTRACE_MAX_PROFILE_SIZE];} profile_buf_t;
-char *trace_profile_buf;
-EXPORT_SYMBOL_GPL(trace_profile_buf);
+char *perf_trace_buf;
+EXPORT_SYMBOL_GPL(perf_trace_buf);
+
+char *perf_trace_buf_nmi;
+EXPORT_SYMBOL_GPL(perf_trace_buf_nmi);
-char *trace_profile_buf_nmi;
-EXPORT_SYMBOL_GPL(trace_profile_buf_nmi);
+typedef typeof(char [FTRACE_MAX_PROFILE_SIZE]) perf_trace_t ;
/* Count the events in use (per event id, not per instance) */
static int total_profile_count;
@@ -32,20 +29,20 @@ static int ftrace_profile_enable_event(struct ftrace_event_call *event)
return 0;
if (!total_profile_count) {
- buf = (char *)alloc_percpu(profile_buf_t);
+ buf = (char *)alloc_percpu(perf_trace_t);
if (!buf)
goto fail_buf;
- rcu_assign_pointer(trace_profile_buf, buf);
+ rcu_assign_pointer(perf_trace_buf, buf);
- buf = (char *)alloc_percpu(profile_buf_t);
+ buf = (char *)alloc_percpu(perf_trace_t);
if (!buf)
goto fail_buf_nmi;
- rcu_assign_pointer(trace_profile_buf_nmi, buf);
+ rcu_assign_pointer(perf_trace_buf_nmi, buf);
}
- ret = event->profile_enable();
+ ret = event->profile_enable(event);
if (!ret) {
total_profile_count++;
return 0;
@@ -53,10 +50,10 @@ static int ftrace_profile_enable_event(struct ftrace_event_call *event)
fail_buf_nmi:
if (!total_profile_count) {
- free_percpu(trace_profile_buf_nmi);
- free_percpu(trace_profile_buf);
- trace_profile_buf_nmi = NULL;
- trace_profile_buf = NULL;
+ free_percpu(perf_trace_buf_nmi);
+ free_percpu(perf_trace_buf);
+ perf_trace_buf_nmi = NULL;
+ perf_trace_buf = NULL;
}
fail_buf:
atomic_dec(&event->profile_count);
@@ -89,14 +86,14 @@ static void ftrace_profile_disable_event(struct ftrace_event_call *event)
if (!atomic_add_negative(-1, &event->profile_count))
return;
- event->profile_disable();
+ event->profile_disable(event);
if (!--total_profile_count) {
- buf = trace_profile_buf;
- rcu_assign_pointer(trace_profile_buf, NULL);
+ buf = perf_trace_buf;
+ rcu_assign_pointer(perf_trace_buf, NULL);
- nmi_buf = trace_profile_buf_nmi;
- rcu_assign_pointer(trace_profile_buf_nmi, NULL);
+ nmi_buf = perf_trace_buf_nmi;
+ rcu_assign_pointer(perf_trace_buf_nmi, NULL);
/*
* Ensure every events in profiling have finished before
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 5e9ffc33f6db7b0e0d992b2de0ce52f380c33476..1d18315dc836e6e15d50cc8d17b4eacec56fd6ba 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -93,9 +93,7 @@ int trace_define_common_fields(struct ftrace_event_call *call)
}
EXPORT_SYMBOL_GPL(trace_define_common_fields);
-#ifdef CONFIG_MODULES
-
-static void trace_destroy_fields(struct ftrace_event_call *call)
+void trace_destroy_fields(struct ftrace_event_call *call)
{
struct ftrace_event_field *field, *next;
@@ -107,8 +105,6 @@ static void trace_destroy_fields(struct ftrace_event_call *call)
}
}
-#endif /* CONFIG_MODULES */
-
static void ftrace_event_enable_disable(struct ftrace_event_call *call,
int enable)
{
@@ -117,14 +113,14 @@ static void ftrace_event_enable_disable(struct ftrace_event_call *call,
if (call->enabled) {
call->enabled = 0;
tracing_stop_cmdline_record();
- call->unregfunc(call->data);
+ call->unregfunc(call);
}
break;
case 1:
if (!call->enabled) {
call->enabled = 1;
tracing_start_cmdline_record();
- call->regfunc(call->data);
+ call->regfunc(call);
}
break;
}
@@ -507,7 +503,7 @@ extern char *__bad_type_size(void);
#define FIELD(type, name) \
sizeof(type) != sizeof(field.name) ? __bad_type_size() : \
#type, "common_" #name, offsetof(typeof(field), name), \
- sizeof(field.name)
+ sizeof(field.name), is_signed_type(type)
static int trace_write_header(struct trace_seq *s)
{
@@ -515,17 +511,17 @@ static int trace_write_header(struct trace_seq *s)
/* struct trace_entry */
return trace_seq_printf(s,
- "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
- "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
- "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
- "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
- "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
- "\n",
- FIELD(unsigned short, type),
- FIELD(unsigned char, flags),
- FIELD(unsigned char, preempt_count),
- FIELD(int, pid),
- FIELD(int, lock_depth));
+ "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\tsigned:%u;\n"
+ "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\tsigned:%u;\n"
+ "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\tsigned:%u;\n"
+ "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\tsigned:%u;\n"
+ "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\tsigned:%u;\n"
+ "\n",
+ FIELD(unsigned short, type),
+ FIELD(unsigned char, flags),
+ FIELD(unsigned char, preempt_count),
+ FIELD(int, pid),
+ FIELD(int, lock_depth));
}
static ssize_t
@@ -937,27 +933,46 @@ event_create_dir(struct ftrace_event_call *call, struct dentry *d_events,
return 0;
}
-#define for_each_event(event, start, end) \
- for (event = start; \
- (unsigned long)event < (unsigned long)end; \
- event++)
+static int __trace_add_event_call(struct ftrace_event_call *call)
+{
+ struct dentry *d_events;
+ int ret;
-#ifdef CONFIG_MODULES
+ if (!call->name)
+ return -EINVAL;
-static LIST_HEAD(ftrace_module_file_list);
+ if (call->raw_init) {
+ ret = call->raw_init(call);
+ if (ret < 0) {
+ if (ret != -ENOSYS)
+ pr_warning("Could not initialize trace "
+ "events/%s\n", call->name);
+ return ret;
+ }
+ }
-/*
- * Modules must own their file_operations to keep up with
- * reference counting.
- */
-struct ftrace_module_file_ops {
- struct list_head list;
- struct module *mod;
- struct file_operations id;
- struct file_operations enable;
- struct file_operations format;
- struct file_operations filter;
-};
+ d_events = event_trace_events_dir();
+ if (!d_events)
+ return -ENOENT;
+
+ ret = event_create_dir(call, d_events, &ftrace_event_id_fops,
+ &ftrace_enable_fops, &ftrace_event_filter_fops,
+ &ftrace_event_format_fops);
+ if (!ret)
+ list_add(&call->list, &ftrace_events);
+
+ return ret;
+}
+
+/* Add an additional event_call dynamically */
+int trace_add_event_call(struct ftrace_event_call *call)
+{
+ int ret;
+ mutex_lock(&event_mutex);
+ ret = __trace_add_event_call(call);
+ mutex_unlock(&event_mutex);
+ return ret;
+}
static void remove_subsystem_dir(const char *name)
{
@@ -985,6 +1000,53 @@ static void remove_subsystem_dir(const char *name)
}
}
+/*
+ * Must be called under locking both of event_mutex and trace_event_mutex.
+ */
+static void __trace_remove_event_call(struct ftrace_event_call *call)
+{
+ ftrace_event_enable_disable(call, 0);
+ if (call->event)
+ __unregister_ftrace_event(call->event);
+ debugfs_remove_recursive(call->dir);
+ list_del(&call->list);
+ trace_destroy_fields(call);
+ destroy_preds(call);
+ remove_subsystem_dir(call->system);
+}
+
+/* Remove an event_call */
+void trace_remove_event_call(struct ftrace_event_call *call)
+{
+ mutex_lock(&event_mutex);
+ down_write(&trace_event_mutex);
+ __trace_remove_event_call(call);
+ up_write(&trace_event_mutex);
+ mutex_unlock(&event_mutex);
+}
+
+#define for_each_event(event, start, end) \
+ for (event = start; \
+ (unsigned long)event < (unsigned long)end; \
+ event++)
+
+#ifdef CONFIG_MODULES
+
+static LIST_HEAD(ftrace_module_file_list);
+
+/*
+ * Modules must own their file_operations to keep up with
+ * reference counting.
+ */
+struct ftrace_module_file_ops {
+ struct list_head list;
+ struct module *mod;
+ struct file_operations id;
+ struct file_operations enable;
+ struct file_operations format;
+ struct file_operations filter;
+};
+
static struct ftrace_module_file_ops *
trace_create_file_ops(struct module *mod)
{
@@ -1042,7 +1104,7 @@ static void trace_module_add_events(struct module *mod)
if (!call->name)
continue;
if (call->raw_init) {
- ret = call->raw_init();
+ ret = call->raw_init(call);
if (ret < 0) {
if (ret != -ENOSYS)
pr_warning("Could not initialize trace "
@@ -1060,10 +1122,11 @@ static void trace_module_add_events(struct module *mod)
return;
}
call->mod = mod;
- list_add(&call->list, &ftrace_events);
- event_create_dir(call, d_events,
- &file_ops->id, &file_ops->enable,
- &file_ops->filter, &file_ops->format);
+ ret = event_create_dir(call, d_events,
+ &file_ops->id, &file_ops->enable,
+ &file_ops->filter, &file_ops->format);
+ if (!ret)
+ list_add(&call->list, &ftrace_events);
}
}
@@ -1077,14 +1140,7 @@ static void trace_module_remove_events(struct module *mod)
list_for_each_entry_safe(call, p, &ftrace_events, list) {
if (call->mod == mod) {
found = true;
- ftrace_event_enable_disable(call, 0);
- if (call->event)
- __unregister_ftrace_event(call->event);
- debugfs_remove_recursive(call->dir);
- list_del(&call->list);
- trace_destroy_fields(call);
- destroy_preds(call);
- remove_subsystem_dir(call->system);
+ __trace_remove_event_call(call);
}
}
@@ -1202,7 +1258,7 @@ static __init int event_trace_init(void)
if (!call->name)
continue;
if (call->raw_init) {
- ret = call->raw_init();
+ ret = call->raw_init(call);
if (ret < 0) {
if (ret != -ENOSYS)
pr_warning("Could not initialize trace "
@@ -1210,10 +1266,12 @@ static __init int event_trace_init(void)
continue;
}
}
- list_add(&call->list, &ftrace_events);
- event_create_dir(call, d_events, &ftrace_event_id_fops,
- &ftrace_enable_fops, &ftrace_event_filter_fops,
- &ftrace_event_format_fops);
+ ret = event_create_dir(call, d_events, &ftrace_event_id_fops,
+ &ftrace_enable_fops,
+ &ftrace_event_filter_fops,
+ &ftrace_event_format_fops);
+ if (!ret)
+ list_add(&call->list, &ftrace_events);
}
while (true) {
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 92672016da284ddaa8a004237425d2d393995faf..50504cb228deded61a141aca151c3d802719b2c2 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -21,6 +21,7 @@
#include
#include
#include
+#include
#include "trace.h"
#include "trace_output.h"
@@ -29,6 +30,7 @@ enum filter_op_ids
{
OP_OR,
OP_AND,
+ OP_GLOB,
OP_NE,
OP_EQ,
OP_LT,
@@ -46,16 +48,17 @@ struct filter_op {
};
static struct filter_op filter_ops[] = {
- { OP_OR, "||", 1 },
- { OP_AND, "&&", 2 },
- { OP_NE, "!=", 4 },
- { OP_EQ, "==", 4 },
- { OP_LT, "<", 5 },
- { OP_LE, "<=", 5 },
- { OP_GT, ">", 5 },
- { OP_GE, ">=", 5 },
- { OP_NONE, "OP_NONE", 0 },
- { OP_OPEN_PAREN, "(", 0 },
+ { OP_OR, "||", 1 },
+ { OP_AND, "&&", 2 },
+ { OP_GLOB, "~", 4 },
+ { OP_NE, "!=", 4 },
+ { OP_EQ, "==", 4 },
+ { OP_LT, "<", 5 },
+ { OP_LE, "<=", 5 },
+ { OP_GT, ">", 5 },
+ { OP_GE, ">=", 5 },
+ { OP_NONE, "OP_NONE", 0 },
+ { OP_OPEN_PAREN, "(", 0 },
};
enum {
@@ -329,22 +332,18 @@ enum regex_type filter_parse_regex(char *buff, int len, char **search, int *not)
return type;
}
-static int filter_build_regex(struct filter_pred *pred)
+static void filter_build_regex(struct filter_pred *pred)
{
struct regex *r = &pred->regex;
- char *search, *dup;
- enum regex_type type;
- int not;
-
- type = filter_parse_regex(r->pattern, r->len, &search, ¬);
- dup = kstrdup(search, GFP_KERNEL);
- if (!dup)
- return -ENOMEM;
-
- strcpy(r->pattern, dup);
- kfree(dup);
-
- r->len = strlen(r->pattern);
+ char *search;
+ enum regex_type type = MATCH_FULL;
+ int not = 0;
+
+ if (pred->op == OP_GLOB) {
+ type = filter_parse_regex(r->pattern, r->len, &search, ¬);
+ r->len = strlen(search);
+ memmove(r->pattern, search, r->len+1);
+ }
switch (type) {
case MATCH_FULL:
@@ -362,14 +361,11 @@ static int filter_build_regex(struct filter_pred *pred)
}
pred->not ^= not;
-
- return 0;
}
/* return 1 if event matches, 0 otherwise (discard) */
-int filter_match_preds(struct ftrace_event_call *call, void *rec)
+int filter_match_preds(struct event_filter *filter, void *rec)
{
- struct event_filter *filter = call->filter;
int match, top = 0, val1 = 0, val2 = 0;
int stack[MAX_FILTER_PRED];
struct filter_pred *pred;
@@ -542,9 +538,8 @@ static void filter_disable_preds(struct ftrace_event_call *call)
filter->preds[i]->fn = filter_pred_none;
}
-void destroy_preds(struct ftrace_event_call *call)
+static void __free_preds(struct event_filter *filter)
{
- struct event_filter *filter = call->filter;
int i;
if (!filter)
@@ -557,21 +552,24 @@ void destroy_preds(struct ftrace_event_call *call)
kfree(filter->preds);
kfree(filter->filter_string);
kfree(filter);
+}
+
+void destroy_preds(struct ftrace_event_call *call)
+{
+ __free_preds(call->filter);
call->filter = NULL;
+ call->filter_active = 0;
}
-static int init_preds(struct ftrace_event_call *call)
+static struct event_filter *__alloc_preds(void)
{
struct event_filter *filter;
struct filter_pred *pred;
int i;
- if (call->filter)
- return 0;
-
- filter = call->filter = kzalloc(sizeof(*filter), GFP_KERNEL);
- if (!call->filter)
- return -ENOMEM;
+ filter = kzalloc(sizeof(*filter), GFP_KERNEL);
+ if (!filter)
+ return ERR_PTR(-ENOMEM);
filter->n_preds = 0;
@@ -587,12 +585,24 @@ static int init_preds(struct ftrace_event_call *call)
filter->preds[i] = pred;
}
- return 0;
+ return filter;
oom:
- destroy_preds(call);
+ __free_preds(filter);
+ return ERR_PTR(-ENOMEM);
+}
+
+static int init_preds(struct ftrace_event_call *call)
+{
+ if (call->filter)
+ return 0;
- return -ENOMEM;
+ call->filter_active = 0;
+ call->filter = __alloc_preds();
+ if (IS_ERR(call->filter))
+ return PTR_ERR(call->filter);
+
+ return 0;
}
static int init_subsystem_preds(struct event_subsystem *system)
@@ -615,14 +625,7 @@ static int init_subsystem_preds(struct event_subsystem *system)
return 0;
}
-enum {
- FILTER_DISABLE_ALL,
- FILTER_INIT_NO_RESET,
- FILTER_SKIP_NO_RESET,
-};
-
-static void filter_free_subsystem_preds(struct event_subsystem *system,
- int flag)
+static void filter_free_subsystem_preds(struct event_subsystem *system)
{
struct ftrace_event_call *call;
@@ -633,14 +636,6 @@ static void filter_free_subsystem_preds(struct event_subsystem *system,
if (strcmp(call->system, system->name) != 0)
continue;
- if (flag == FILTER_INIT_NO_RESET) {
- call->filter->no_reset = false;
- continue;
- }
-
- if (flag == FILTER_SKIP_NO_RESET && call->filter->no_reset)
- continue;
-
filter_disable_preds(call);
remove_filter_string(call->filter);
}
@@ -648,10 +643,10 @@ static void filter_free_subsystem_preds(struct event_subsystem *system,
static int filter_add_pred_fn(struct filter_parse_state *ps,
struct ftrace_event_call *call,
+ struct event_filter *filter,
struct filter_pred *pred,
filter_pred_fn_t fn)
{
- struct event_filter *filter = call->filter;
int idx, err;
if (filter->n_preds == MAX_FILTER_PRED) {
@@ -666,7 +661,6 @@ static int filter_add_pred_fn(struct filter_parse_state *ps,
return err;
filter->n_preds++;
- call->filter_active = 1;
return 0;
}
@@ -691,7 +685,10 @@ static bool is_string_field(struct ftrace_event_field *field)
static int is_legal_op(struct ftrace_event_field *field, int op)
{
- if (is_string_field(field) && (op != OP_EQ && op != OP_NE))
+ if (is_string_field(field) &&
+ (op != OP_EQ && op != OP_NE && op != OP_GLOB))
+ return 0;
+ if (!is_string_field(field) && op == OP_GLOB)
return 0;
return 1;
@@ -742,6 +739,7 @@ static filter_pred_fn_t select_comparison_fn(int op, int field_size,
static int filter_add_pred(struct filter_parse_state *ps,
struct ftrace_event_call *call,
+ struct event_filter *filter,
struct filter_pred *pred,
bool dry_run)
{
@@ -776,15 +774,13 @@ static int filter_add_pred(struct filter_parse_state *ps,
}
if (is_string_field(field)) {
- ret = filter_build_regex(pred);
- if (ret)
- return ret;
+ filter_build_regex(pred);
if (field->filter_type == FILTER_STATIC_STRING) {
fn = filter_pred_string;
pred->regex.field_len = field->size;
} else if (field->filter_type == FILTER_DYN_STRING)
- fn = filter_pred_strloc;
+ fn = filter_pred_strloc;
else {
fn = filter_pred_pchar;
pred->regex.field_len = strlen(pred->regex.pattern);
@@ -813,45 +809,7 @@ static int filter_add_pred(struct filter_parse_state *ps,
add_pred_fn:
if (!dry_run)
- return filter_add_pred_fn(ps, call, pred, fn);
- return 0;
-}
-
-static int filter_add_subsystem_pred(struct filter_parse_state *ps,
- struct event_subsystem *system,
- struct filter_pred *pred,
- char *filter_string,
- bool dry_run)
-{
- struct ftrace_event_call *call;
- int err = 0;
- bool fail = true;
-
- list_for_each_entry(call, &ftrace_events, list) {
-
- if (!call->define_fields)
- continue;
-
- if (strcmp(call->system, system->name))
- continue;
-
- if (call->filter->no_reset)
- continue;
-
- err = filter_add_pred(ps, call, pred, dry_run);
- if (err)
- call->filter->no_reset = true;
- else
- fail = false;
-
- if (!dry_run)
- replace_filter_string(call->filter, filter_string);
- }
-
- if (fail) {
- parse_error(ps, FILT_ERR_BAD_SUBSYS_FILTER, 0);
- return err;
- }
+ return filter_add_pred_fn(ps, call, filter, pred, fn);
return 0;
}
@@ -1209,8 +1167,8 @@ static int check_preds(struct filter_parse_state *ps)
return 0;
}
-static int replace_preds(struct event_subsystem *system,
- struct ftrace_event_call *call,
+static int replace_preds(struct ftrace_event_call *call,
+ struct event_filter *filter,
struct filter_parse_state *ps,
char *filter_string,
bool dry_run)
@@ -1257,11 +1215,7 @@ static int replace_preds(struct event_subsystem *system,
add_pred:
if (!pred)
return -ENOMEM;
- if (call)
- err = filter_add_pred(ps, call, pred, false);
- else
- err = filter_add_subsystem_pred(ps, system, pred,
- filter_string, dry_run);
+ err = filter_add_pred(ps, call, filter, pred, dry_run);
filter_free_pred(pred);
if (err)
return err;
@@ -1272,10 +1226,50 @@ static int replace_preds(struct event_subsystem *system,
return 0;
}
-int apply_event_filter(struct ftrace_event_call *call, char *filter_string)
+static int replace_system_preds(struct event_subsystem *system,
+ struct filter_parse_state *ps,
+ char *filter_string)
{
+ struct ftrace_event_call *call;
+ bool fail = true;
int err;
+ list_for_each_entry(call, &ftrace_events, list) {
+ struct event_filter *filter = call->filter;
+
+ if (!call->define_fields)
+ continue;
+
+ if (strcmp(call->system, system->name) != 0)
+ continue;
+
+ /* try to see if the filter can be applied */
+ err = replace_preds(call, filter, ps, filter_string, true);
+ if (err)
+ continue;
+
+ /* really apply the filter */
+ filter_disable_preds(call);
+ err = replace_preds(call, filter, ps, filter_string, false);
+ if (err)
+ filter_disable_preds(call);
+ else {
+ call->filter_active = 1;
+ replace_filter_string(filter, filter_string);
+ }
+ fail = false;
+ }
+
+ if (fail) {
+ parse_error(ps, FILT_ERR_BAD_SUBSYS_FILTER, 0);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+int apply_event_filter(struct ftrace_event_call *call, char *filter_string)
+{
+ int err;
struct filter_parse_state *ps;
mutex_lock(&event_mutex);
@@ -1287,8 +1281,7 @@ int apply_event_filter(struct ftrace_event_call *call, char *filter_string)
if (!strcmp(strstrip(filter_string), "0")) {
filter_disable_preds(call);
remove_filter_string(call->filter);
- mutex_unlock(&event_mutex);
- return 0;
+ goto out_unlock;
}
err = -ENOMEM;
@@ -1306,10 +1299,11 @@ int apply_event_filter(struct ftrace_event_call *call, char *filter_string)
goto out;
}
- err = replace_preds(NULL, call, ps, filter_string, false);
+ err = replace_preds(call, call->filter, ps, filter_string, false);
if (err)
append_filter_err(ps, call->filter);
-
+ else
+ call->filter_active = 1;
out:
filter_opstack_clear(ps);
postfix_clear(ps);
@@ -1324,7 +1318,6 @@ int apply_subsystem_event_filter(struct event_subsystem *system,
char *filter_string)
{
int err;
-
struct filter_parse_state *ps;
mutex_lock(&event_mutex);
@@ -1334,10 +1327,9 @@ int apply_subsystem_event_filter(struct event_subsystem *system,
goto out_unlock;
if (!strcmp(strstrip(filter_string), "0")) {
- filter_free_subsystem_preds(system, FILTER_DISABLE_ALL);
+ filter_free_subsystem_preds(system);
remove_filter_string(system->filter);
- mutex_unlock(&event_mutex);
- return 0;
+ goto out_unlock;
}
err = -ENOMEM;
@@ -1354,31 +1346,87 @@ int apply_subsystem_event_filter(struct event_subsystem *system,
goto out;
}
- filter_free_subsystem_preds(system, FILTER_INIT_NO_RESET);
-
- /* try to see the filter can be applied to which events */
- err = replace_preds(system, NULL, ps, filter_string, true);
- if (err) {
+ err = replace_system_preds(system, ps, filter_string);
+ if (err)
append_filter_err(ps, system->filter);
- goto out;
+
+out:
+ filter_opstack_clear(ps);
+ postfix_clear(ps);
+ kfree(ps);
+out_unlock:
+ mutex_unlock(&event_mutex);
+
+ return err;
+}
+
+#ifdef CONFIG_EVENT_PROFILE
+
+void ftrace_profile_free_filter(struct perf_event *event)
+{
+ struct event_filter *filter = event->filter;
+
+ event->filter = NULL;
+ __free_preds(filter);
+}
+
+int ftrace_profile_set_filter(struct perf_event *event, int event_id,
+ char *filter_str)
+{
+ int err;
+ struct event_filter *filter;
+ struct filter_parse_state *ps;
+ struct ftrace_event_call *call = NULL;
+
+ mutex_lock(&event_mutex);
+
+ list_for_each_entry(call, &ftrace_events, list) {
+ if (call->id == event_id)
+ break;
}
- filter_free_subsystem_preds(system, FILTER_SKIP_NO_RESET);
+ err = -EINVAL;
+ if (!call)
+ goto out_unlock;
- /* really apply the filter to the events */
- err = replace_preds(system, NULL, ps, filter_string, false);
- if (err) {
- append_filter_err(ps, system->filter);
- filter_free_subsystem_preds(system, 2);
+ err = -EEXIST;
+ if (event->filter)
+ goto out_unlock;
+
+ filter = __alloc_preds();
+ if (IS_ERR(filter)) {
+ err = PTR_ERR(filter);
+ goto out_unlock;
}
-out:
+ err = -ENOMEM;
+ ps = kzalloc(sizeof(*ps), GFP_KERNEL);
+ if (!ps)
+ goto free_preds;
+
+ parse_init(ps, filter_ops, filter_str);
+ err = filter_parse(ps);
+ if (err)
+ goto free_ps;
+
+ err = replace_preds(call, filter, ps, filter_str, false);
+ if (!err)
+ event->filter = filter;
+
+free_ps:
filter_opstack_clear(ps);
postfix_clear(ps);
kfree(ps);
+
+free_preds:
+ if (err)
+ __free_preds(filter);
+
out_unlock:
mutex_unlock(&event_mutex);
return err;
}
+#endif /* CONFIG_EVENT_PROFILE */
+
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index c74848ddb85a236916bfb7bdf64d322a6f37008d..dff8c84ddf17589543ca90e71af630cf7b0755b7 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -66,44 +66,47 @@ static void __always_unused ____ftrace_check_##name(void) \
#undef __field
#define __field(type, item) \
ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t" \
- "offset:%zu;\tsize:%zu;\n", \
+ "offset:%zu;\tsize:%zu;\tsigned:%u;\n", \
offsetof(typeof(field), item), \
- sizeof(field.item)); \
+ sizeof(field.item), is_signed_type(type)); \
if (!ret) \
return 0;
#undef __field_desc
#define __field_desc(type, container, item) \
ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t" \
- "offset:%zu;\tsize:%zu;\n", \
+ "offset:%zu;\tsize:%zu;\tsigned:%u;\n", \
offsetof(typeof(field), container.item), \
- sizeof(field.container.item)); \
+ sizeof(field.container.item), \
+ is_signed_type(type)); \
if (!ret) \
return 0;
#undef __array
#define __array(type, item, len) \
ret = trace_seq_printf(s, "\tfield:" #type " " #item "[" #len "];\t" \
- "offset:%zu;\tsize:%zu;\n", \
- offsetof(typeof(field), item), \
- sizeof(field.item)); \
+ "offset:%zu;\tsize:%zu;\tsigned:%u;\n", \
+ offsetof(typeof(field), item), \
+ sizeof(field.item), is_signed_type(type)); \
if (!ret) \
return 0;
#undef __array_desc
#define __array_desc(type, container, item, len) \
ret = trace_seq_printf(s, "\tfield:" #type " " #item "[" #len "];\t" \
- "offset:%zu;\tsize:%zu;\n", \
+ "offset:%zu;\tsize:%zu;\tsigned:%u;\n", \
offsetof(typeof(field), container.item), \
- sizeof(field.container.item)); \
+ sizeof(field.container.item), \
+ is_signed_type(type)); \
if (!ret) \
return 0;
#undef __dynamic_array
#define __dynamic_array(type, item) \
ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t" \
- "offset:%zu;\tsize:0;\n", \
- offsetof(typeof(field), item)); \
+ "offset:%zu;\tsize:0;\tsigned:%u;\n", \
+ offsetof(typeof(field), item), \
+ is_signed_type(type)); \
if (!ret) \
return 0;
@@ -131,7 +134,6 @@ ftrace_format_##name(struct ftrace_event_call *unused, \
#include "trace_entries.h"
-
#undef __field
#define __field(type, item) \
ret = trace_define_field(event_call, #type, #item, \
@@ -193,6 +195,11 @@ ftrace_define_fields_##name(struct ftrace_event_call *event_call) \
#include "trace_entries.h"
+static int ftrace_raw_init_event(struct ftrace_event_call *call)
+{
+ INIT_LIST_HEAD(&call->fields);
+ return 0;
+}
#undef __field
#define __field(type, item)
@@ -211,7 +218,6 @@ ftrace_define_fields_##name(struct ftrace_event_call *event_call) \
#undef FTRACE_ENTRY
#define FTRACE_ENTRY(call, struct_name, type, tstruct, print) \
-static int ftrace_raw_init_event_##call(void); \
\
struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
@@ -219,14 +225,9 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
.name = #call, \
.id = type, \
.system = __stringify(TRACE_SYSTEM), \
- .raw_init = ftrace_raw_init_event_##call, \
+ .raw_init = ftrace_raw_init_event, \
.show_format = ftrace_format_##call, \
.define_fields = ftrace_define_fields_##call, \
}; \
-static int ftrace_raw_init_event_##call(void) \
-{ \
- INIT_LIST_HEAD(&event_##call.fields); \
- return 0; \
-} \
#include "trace_entries.h"
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
new file mode 100644
index 0000000000000000000000000000000000000000..aff5f80b59b8785cffe69091aa48a225d700add8
--- /dev/null
+++ b/kernel/trace/trace_kprobe.c
@@ -0,0 +1,1523 @@
+/*
+ * Kprobes-based tracing events
+ *
+ * Created by Masami Hiramatsu
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include "trace.h"
+#include "trace_output.h"
+
+#define MAX_TRACE_ARGS 128
+#define MAX_ARGSTR_LEN 63
+#define MAX_EVENT_NAME_LEN 64
+#define KPROBE_EVENT_SYSTEM "kprobes"
+
+/* Reserved field names */
+#define FIELD_STRING_IP "__probe_ip"
+#define FIELD_STRING_NARGS "__probe_nargs"
+#define FIELD_STRING_RETIP "__probe_ret_ip"
+#define FIELD_STRING_FUNC "__probe_func"
+
+const char *reserved_field_names[] = {
+ "common_type",
+ "common_flags",
+ "common_preempt_count",
+ "common_pid",
+ "common_tgid",
+ "common_lock_depth",
+ FIELD_STRING_IP,
+ FIELD_STRING_NARGS,
+ FIELD_STRING_RETIP,
+ FIELD_STRING_FUNC,
+};
+
+struct fetch_func {
+ unsigned long (*func)(struct pt_regs *, void *);
+ void *data;
+};
+
+static __kprobes unsigned long call_fetch(struct fetch_func *f,
+ struct pt_regs *regs)
+{
+ return f->func(regs, f->data);
+}
+
+/* fetch handlers */
+static __kprobes unsigned long fetch_register(struct pt_regs *regs,
+ void *offset)
+{
+ return regs_get_register(regs, (unsigned int)((unsigned long)offset));
+}
+
+static __kprobes unsigned long fetch_stack(struct pt_regs *regs,
+ void *num)
+{
+ return regs_get_kernel_stack_nth(regs,
+ (unsigned int)((unsigned long)num));
+}
+
+static __kprobes unsigned long fetch_memory(struct pt_regs *regs, void *addr)
+{
+ unsigned long retval;
+
+ if (probe_kernel_address(addr, retval))
+ return 0;
+ return retval;
+}
+
+static __kprobes unsigned long fetch_argument(struct pt_regs *regs, void *num)
+{
+ return regs_get_argument_nth(regs, (unsigned int)((unsigned long)num));
+}
+
+static __kprobes unsigned long fetch_retvalue(struct pt_regs *regs,
+ void *dummy)
+{
+ return regs_return_value(regs);
+}
+
+static __kprobes unsigned long fetch_stack_address(struct pt_regs *regs,
+ void *dummy)
+{
+ return kernel_stack_pointer(regs);
+}
+
+/* Memory fetching by symbol */
+struct symbol_cache {
+ char *symbol;
+ long offset;
+ unsigned long addr;
+};
+
+static unsigned long update_symbol_cache(struct symbol_cache *sc)
+{
+ sc->addr = (unsigned long)kallsyms_lookup_name(sc->symbol);
+ if (sc->addr)
+ sc->addr += sc->offset;
+ return sc->addr;
+}
+
+static void free_symbol_cache(struct symbol_cache *sc)
+{
+ kfree(sc->symbol);
+ kfree(sc);
+}
+
+static struct symbol_cache *alloc_symbol_cache(const char *sym, long offset)
+{
+ struct symbol_cache *sc;
+
+ if (!sym || strlen(sym) == 0)
+ return NULL;
+ sc = kzalloc(sizeof(struct symbol_cache), GFP_KERNEL);
+ if (!sc)
+ return NULL;
+
+ sc->symbol = kstrdup(sym, GFP_KERNEL);
+ if (!sc->symbol) {
+ kfree(sc);
+ return NULL;
+ }
+ sc->offset = offset;
+
+ update_symbol_cache(sc);
+ return sc;
+}
+
+static __kprobes unsigned long fetch_symbol(struct pt_regs *regs, void *data)
+{
+ struct symbol_cache *sc = data;
+
+ if (sc->addr)
+ return fetch_memory(regs, (void *)sc->addr);
+ else
+ return 0;
+}
+
+/* Special indirect memory access interface */
+struct indirect_fetch_data {
+ struct fetch_func orig;
+ long offset;
+};
+
+static __kprobes unsigned long fetch_indirect(struct pt_regs *regs, void *data)
+{
+ struct indirect_fetch_data *ind = data;
+ unsigned long addr;
+
+ addr = call_fetch(&ind->orig, regs);
+ if (addr) {
+ addr += ind->offset;
+ return fetch_memory(regs, (void *)addr);
+ } else
+ return 0;
+}
+
+static __kprobes void free_indirect_fetch_data(struct indirect_fetch_data *data)
+{
+ if (data->orig.func == fetch_indirect)
+ free_indirect_fetch_data(data->orig.data);
+ else if (data->orig.func == fetch_symbol)
+ free_symbol_cache(data->orig.data);
+ kfree(data);
+}
+
+/**
+ * Kprobe event core functions
+ */
+
+struct probe_arg {
+ struct fetch_func fetch;
+ const char *name;
+};
+
+/* Flags for trace_probe */
+#define TP_FLAG_TRACE 1
+#define TP_FLAG_PROFILE 2
+
+struct trace_probe {
+ struct list_head list;
+ struct kretprobe rp; /* Use rp.kp for kprobe use */
+ unsigned long nhit;
+ unsigned int flags; /* For TP_FLAG_* */
+ const char *symbol; /* symbol name */
+ struct ftrace_event_call call;
+ struct trace_event event;
+ unsigned int nr_args;
+ struct probe_arg args[];
+};
+
+#define SIZEOF_TRACE_PROBE(n) \
+ (offsetof(struct trace_probe, args) + \
+ (sizeof(struct probe_arg) * (n)))
+
+static __kprobes int probe_is_return(struct trace_probe *tp)
+{
+ return tp->rp.handler != NULL;
+}
+
+static __kprobes const char *probe_symbol(struct trace_probe *tp)
+{
+ return tp->symbol ? tp->symbol : "unknown";
+}
+
+static int probe_arg_string(char *buf, size_t n, struct fetch_func *ff)
+{
+ int ret = -EINVAL;
+
+ if (ff->func == fetch_argument)
+ ret = snprintf(buf, n, "$arg%lu", (unsigned long)ff->data);
+ else if (ff->func == fetch_register) {
+ const char *name;
+ name = regs_query_register_name((unsigned int)((long)ff->data));
+ ret = snprintf(buf, n, "%%%s", name);
+ } else if (ff->func == fetch_stack)
+ ret = snprintf(buf, n, "$stack%lu", (unsigned long)ff->data);
+ else if (ff->func == fetch_memory)
+ ret = snprintf(buf, n, "@0x%p", ff->data);
+ else if (ff->func == fetch_symbol) {
+ struct symbol_cache *sc = ff->data;
+ if (sc->offset)
+ ret = snprintf(buf, n, "@%s%+ld", sc->symbol,
+ sc->offset);
+ else
+ ret = snprintf(buf, n, "@%s", sc->symbol);
+ } else if (ff->func == fetch_retvalue)
+ ret = snprintf(buf, n, "$retval");
+ else if (ff->func == fetch_stack_address)
+ ret = snprintf(buf, n, "$stack");
+ else if (ff->func == fetch_indirect) {
+ struct indirect_fetch_data *id = ff->data;
+ size_t l = 0;
+ ret = snprintf(buf, n, "%+ld(", id->offset);
+ if (ret >= n)
+ goto end;
+ l += ret;
+ ret = probe_arg_string(buf + l, n - l, &id->orig);
+ if (ret < 0)
+ goto end;
+ l += ret;
+ ret = snprintf(buf + l, n - l, ")");
+ ret += l;
+ }
+end:
+ if (ret >= n)
+ return -ENOSPC;
+ return ret;
+}
+
+static int register_probe_event(struct trace_probe *tp);
+static void unregister_probe_event(struct trace_probe *tp);
+
+static DEFINE_MUTEX(probe_lock);
+static LIST_HEAD(probe_list);
+
+static int kprobe_dispatcher(struct kprobe *kp, struct pt_regs *regs);
+static int kretprobe_dispatcher(struct kretprobe_instance *ri,
+ struct pt_regs *regs);
+
+/*
+ * Allocate new trace_probe and initialize it (including kprobes).
+ */
+static struct trace_probe *alloc_trace_probe(const char *group,
+ const char *event,
+ void *addr,
+ const char *symbol,
+ unsigned long offs,
+ int nargs, int is_return)
+{
+ struct trace_probe *tp;
+
+ tp = kzalloc(SIZEOF_TRACE_PROBE(nargs), GFP_KERNEL);
+ if (!tp)
+ return ERR_PTR(-ENOMEM);
+
+ if (symbol) {
+ tp->symbol = kstrdup(symbol, GFP_KERNEL);
+ if (!tp->symbol)
+ goto error;
+ tp->rp.kp.symbol_name = tp->symbol;
+ tp->rp.kp.offset = offs;
+ } else
+ tp->rp.kp.addr = addr;
+
+ if (is_return)
+ tp->rp.handler = kretprobe_dispatcher;
+ else
+ tp->rp.kp.pre_handler = kprobe_dispatcher;
+
+ if (!event)
+ goto error;
+ tp->call.name = kstrdup(event, GFP_KERNEL);
+ if (!tp->call.name)
+ goto error;
+
+ if (!group)
+ goto error;
+ tp->call.system = kstrdup(group, GFP_KERNEL);
+ if (!tp->call.system)
+ goto error;
+
+ INIT_LIST_HEAD(&tp->list);
+ return tp;
+error:
+ kfree(tp->call.name);
+ kfree(tp->symbol);
+ kfree(tp);
+ return ERR_PTR(-ENOMEM);
+}
+
+static void free_probe_arg(struct probe_arg *arg)
+{
+ if (arg->fetch.func == fetch_symbol)
+ free_symbol_cache(arg->fetch.data);
+ else if (arg->fetch.func == fetch_indirect)
+ free_indirect_fetch_data(arg->fetch.data);
+ kfree(arg->name);
+}
+
+static void free_trace_probe(struct trace_probe *tp)
+{
+ int i;
+
+ for (i = 0; i < tp->nr_args; i++)
+ free_probe_arg(&tp->args[i]);
+
+ kfree(tp->call.system);
+ kfree(tp->call.name);
+ kfree(tp->symbol);
+ kfree(tp);
+}
+
+static struct trace_probe *find_probe_event(const char *event,
+ const char *group)
+{
+ struct trace_probe *tp;
+
+ list_for_each_entry(tp, &probe_list, list)
+ if (strcmp(tp->call.name, event) == 0 &&
+ strcmp(tp->call.system, group) == 0)
+ return tp;
+ return NULL;
+}
+
+/* Unregister a trace_probe and probe_event: call with locking probe_lock */
+static void unregister_trace_probe(struct trace_probe *tp)
+{
+ if (probe_is_return(tp))
+ unregister_kretprobe(&tp->rp);
+ else
+ unregister_kprobe(&tp->rp.kp);
+ list_del(&tp->list);
+ unregister_probe_event(tp);
+}
+
+/* Register a trace_probe and probe_event */
+static int register_trace_probe(struct trace_probe *tp)
+{
+ struct trace_probe *old_tp;
+ int ret;
+
+ mutex_lock(&probe_lock);
+
+ /* register as an event */
+ old_tp = find_probe_event(tp->call.name, tp->call.system);
+ if (old_tp) {
+ /* delete old event */
+ unregister_trace_probe(old_tp);
+ free_trace_probe(old_tp);
+ }
+ ret = register_probe_event(tp);
+ if (ret) {
+ pr_warning("Faild to register probe event(%d)\n", ret);
+ goto end;
+ }
+
+ tp->rp.kp.flags |= KPROBE_FLAG_DISABLED;
+ if (probe_is_return(tp))
+ ret = register_kretprobe(&tp->rp);
+ else
+ ret = register_kprobe(&tp->rp.kp);
+
+ if (ret) {
+ pr_warning("Could not insert probe(%d)\n", ret);
+ if (ret == -EILSEQ) {
+ pr_warning("Probing address(0x%p) is not an "
+ "instruction boundary.\n",
+ tp->rp.kp.addr);
+ ret = -EINVAL;
+ }
+ unregister_probe_event(tp);
+ } else
+ list_add_tail(&tp->list, &probe_list);
+end:
+ mutex_unlock(&probe_lock);
+ return ret;
+}
+
+/* Split symbol and offset. */
+static int split_symbol_offset(char *symbol, unsigned long *offset)
+{
+ char *tmp;
+ int ret;
+
+ if (!offset)
+ return -EINVAL;
+
+ tmp = strchr(symbol, '+');
+ if (tmp) {
+ /* skip sign because strict_strtol doesn't accept '+' */
+ ret = strict_strtoul(tmp + 1, 0, offset);
+ if (ret)
+ return ret;
+ *tmp = '\0';
+ } else
+ *offset = 0;
+ return 0;
+}
+
+#define PARAM_MAX_ARGS 16
+#define PARAM_MAX_STACK (THREAD_SIZE / sizeof(unsigned long))
+
+static int parse_probe_vars(char *arg, struct fetch_func *ff, int is_return)
+{
+ int ret = 0;
+ unsigned long param;
+
+ if (strcmp(arg, "retval") == 0) {
+ if (is_return) {
+ ff->func = fetch_retvalue;
+ ff->data = NULL;
+ } else
+ ret = -EINVAL;
+ } else if (strncmp(arg, "stack", 5) == 0) {
+ if (arg[5] == '\0') {
+ ff->func = fetch_stack_address;
+ ff->data = NULL;
+ } else if (isdigit(arg[5])) {
+ ret = strict_strtoul(arg + 5, 10, ¶m);
+ if (ret || param > PARAM_MAX_STACK)
+ ret = -EINVAL;
+ else {
+ ff->func = fetch_stack;
+ ff->data = (void *)param;
+ }
+ } else
+ ret = -EINVAL;
+ } else if (strncmp(arg, "arg", 3) == 0 && isdigit(arg[3])) {
+ ret = strict_strtoul(arg + 3, 10, ¶m);
+ if (ret || param > PARAM_MAX_ARGS)
+ ret = -EINVAL;
+ else {
+ ff->func = fetch_argument;
+ ff->data = (void *)param;
+ }
+ } else
+ ret = -EINVAL;
+ return ret;
+}
+
+/* Recursive argument parser */
+static int __parse_probe_arg(char *arg, struct fetch_func *ff, int is_return)
+{
+ int ret = 0;
+ unsigned long param;
+ long offset;
+ char *tmp;
+
+ switch (arg[0]) {
+ case '$':
+ ret = parse_probe_vars(arg + 1, ff, is_return);
+ break;
+ case '%': /* named register */
+ ret = regs_query_register_offset(arg + 1);
+ if (ret >= 0) {
+ ff->func = fetch_register;
+ ff->data = (void *)(unsigned long)ret;
+ ret = 0;
+ }
+ break;
+ case '@': /* memory or symbol */
+ if (isdigit(arg[1])) {
+ ret = strict_strtoul(arg + 1, 0, ¶m);
+ if (ret)
+ break;
+ ff->func = fetch_memory;
+ ff->data = (void *)param;
+ } else {
+ ret = split_symbol_offset(arg + 1, &offset);
+ if (ret)
+ break;
+ ff->data = alloc_symbol_cache(arg + 1, offset);
+ if (ff->data)
+ ff->func = fetch_symbol;
+ else
+ ret = -EINVAL;
+ }
+ break;
+ case '+': /* indirect memory */
+ case '-':
+ tmp = strchr(arg, '(');
+ if (!tmp) {
+ ret = -EINVAL;
+ break;
+ }
+ *tmp = '\0';
+ ret = strict_strtol(arg + 1, 0, &offset);
+ if (ret)
+ break;
+ if (arg[0] == '-')
+ offset = -offset;
+ arg = tmp + 1;
+ tmp = strrchr(arg, ')');
+ if (tmp) {
+ struct indirect_fetch_data *id;
+ *tmp = '\0';
+ id = kzalloc(sizeof(struct indirect_fetch_data),
+ GFP_KERNEL);
+ if (!id)
+ return -ENOMEM;
+ id->offset = offset;
+ ret = __parse_probe_arg(arg, &id->orig, is_return);
+ if (ret)
+ kfree(id);
+ else {
+ ff->func = fetch_indirect;
+ ff->data = (void *)id;
+ }
+ } else
+ ret = -EINVAL;
+ break;
+ default:
+ /* TODO: support custom handler */
+ ret = -EINVAL;
+ }
+ return ret;
+}
+
+/* String length checking wrapper */
+static int parse_probe_arg(char *arg, struct fetch_func *ff, int is_return)
+{
+ if (strlen(arg) > MAX_ARGSTR_LEN) {
+ pr_info("Argument is too long.: %s\n", arg);
+ return -ENOSPC;
+ }
+ return __parse_probe_arg(arg, ff, is_return);
+}
+
+/* Return 1 if name is reserved or already used by another argument */
+static int conflict_field_name(const char *name,
+ struct probe_arg *args, int narg)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(reserved_field_names); i++)
+ if (strcmp(reserved_field_names[i], name) == 0)
+ return 1;
+ for (i = 0; i < narg; i++)
+ if (strcmp(args[i].name, name) == 0)
+ return 1;
+ return 0;
+}
+
+static int create_trace_probe(int argc, char **argv)
+{
+ /*
+ * Argument syntax:
+ * - Add kprobe: p[:[GRP/]EVENT] KSYM[+OFFS]|KADDR [FETCHARGS]
+ * - Add kretprobe: r[:[GRP/]EVENT] KSYM[+0] [FETCHARGS]
+ * Fetch args:
+ * $argN : fetch Nth of function argument. (N:0-)
+ * $retval : fetch return value
+ * $stack : fetch stack address
+ * $stackN : fetch Nth of stack (N:0-)
+ * @ADDR : fetch memory at ADDR (ADDR should be in kernel)
+ * @SYM[+|-offs] : fetch memory at SYM +|- offs (SYM is a data symbol)
+ * %REG : fetch register REG
+ * Indirect memory fetch:
+ * +|-offs(ARG) : fetch memory at ARG +|- offs address.
+ * Alias name of args:
+ * NAME=FETCHARG : set NAME as alias of FETCHARG.
+ */
+ struct trace_probe *tp;
+ int i, ret = 0;
+ int is_return = 0;
+ char *symbol = NULL, *event = NULL, *arg = NULL, *group = NULL;
+ unsigned long offset = 0;
+ void *addr = NULL;
+ char buf[MAX_EVENT_NAME_LEN];
+
+ if (argc < 2) {
+ pr_info("Probe point is not specified.\n");
+ return -EINVAL;
+ }
+
+ if (argv[0][0] == 'p')
+ is_return = 0;
+ else if (argv[0][0] == 'r')
+ is_return = 1;
+ else {
+ pr_info("Probe definition must be started with 'p' or 'r'.\n");
+ return -EINVAL;
+ }
+
+ if (argv[0][1] == ':') {
+ event = &argv[0][2];
+ if (strchr(event, '/')) {
+ group = event;
+ event = strchr(group, '/') + 1;
+ event[-1] = '\0';
+ if (strlen(group) == 0) {
+ pr_info("Group name is not specifiled\n");
+ return -EINVAL;
+ }
+ }
+ if (strlen(event) == 0) {
+ pr_info("Event name is not specifiled\n");
+ return -EINVAL;
+ }
+ }
+
+ if (isdigit(argv[1][0])) {
+ if (is_return) {
+ pr_info("Return probe point must be a symbol.\n");
+ return -EINVAL;
+ }
+ /* an address specified */
+ ret = strict_strtoul(&argv[0][2], 0, (unsigned long *)&addr);
+ if (ret) {
+ pr_info("Failed to parse address.\n");
+ return ret;
+ }
+ } else {
+ /* a symbol specified */
+ symbol = argv[1];
+ /* TODO: support .init module functions */
+ ret = split_symbol_offset(symbol, &offset);
+ if (ret) {
+ pr_info("Failed to parse symbol.\n");
+ return ret;
+ }
+ if (offset && is_return) {
+ pr_info("Return probe must be used without offset.\n");
+ return -EINVAL;
+ }
+ }
+ argc -= 2; argv += 2;
+
+ /* setup a probe */
+ if (!group)
+ group = KPROBE_EVENT_SYSTEM;
+ if (!event) {
+ /* Make a new event name */
+ if (symbol)
+ snprintf(buf, MAX_EVENT_NAME_LEN, "%c@%s%+ld",
+ is_return ? 'r' : 'p', symbol, offset);
+ else
+ snprintf(buf, MAX_EVENT_NAME_LEN, "%c@0x%p",
+ is_return ? 'r' : 'p', addr);
+ event = buf;
+ }
+ tp = alloc_trace_probe(group, event, addr, symbol, offset, argc,
+ is_return);
+ if (IS_ERR(tp)) {
+ pr_info("Failed to allocate trace_probe.(%d)\n",
+ (int)PTR_ERR(tp));
+ return PTR_ERR(tp);
+ }
+
+ /* parse arguments */
+ ret = 0;
+ for (i = 0; i < argc && i < MAX_TRACE_ARGS; i++) {
+ /* Parse argument name */
+ arg = strchr(argv[i], '=');
+ if (arg)
+ *arg++ = '\0';
+ else
+ arg = argv[i];
+
+ if (conflict_field_name(argv[i], tp->args, i)) {
+ pr_info("Argument%d name '%s' conflicts with "
+ "another field.\n", i, argv[i]);
+ ret = -EINVAL;
+ goto error;
+ }
+
+ tp->args[i].name = kstrdup(argv[i], GFP_KERNEL);
+ if (!tp->args[i].name) {
+ pr_info("Failed to allocate argument%d name '%s'.\n",
+ i, argv[i]);
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ /* Parse fetch argument */
+ ret = parse_probe_arg(arg, &tp->args[i].fetch, is_return);
+ if (ret) {
+ pr_info("Parse error at argument%d. (%d)\n", i, ret);
+ kfree(tp->args[i].name);
+ goto error;
+ }
+
+ tp->nr_args++;
+ }
+
+ ret = register_trace_probe(tp);
+ if (ret)
+ goto error;
+ return 0;
+
+error:
+ free_trace_probe(tp);
+ return ret;
+}
+
+static void cleanup_all_probes(void)
+{
+ struct trace_probe *tp;
+
+ mutex_lock(&probe_lock);
+ /* TODO: Use batch unregistration */
+ while (!list_empty(&probe_list)) {
+ tp = list_entry(probe_list.next, struct trace_probe, list);
+ unregister_trace_probe(tp);
+ free_trace_probe(tp);
+ }
+ mutex_unlock(&probe_lock);
+}
+
+
+/* Probes listing interfaces */
+static void *probes_seq_start(struct seq_file *m, loff_t *pos)
+{
+ mutex_lock(&probe_lock);
+ return seq_list_start(&probe_list, *pos);
+}
+
+static void *probes_seq_next(struct seq_file *m, void *v, loff_t *pos)
+{
+ return seq_list_next(v, &probe_list, pos);
+}
+
+static void probes_seq_stop(struct seq_file *m, void *v)
+{
+ mutex_unlock(&probe_lock);
+}
+
+static int probes_seq_show(struct seq_file *m, void *v)
+{
+ struct trace_probe *tp = v;
+ int i, ret;
+ char buf[MAX_ARGSTR_LEN + 1];
+
+ seq_printf(m, "%c", probe_is_return(tp) ? 'r' : 'p');
+ seq_printf(m, ":%s/%s", tp->call.system, tp->call.name);
+
+ if (!tp->symbol)
+ seq_printf(m, " 0x%p", tp->rp.kp.addr);
+ else if (tp->rp.kp.offset)
+ seq_printf(m, " %s+%u", probe_symbol(tp), tp->rp.kp.offset);
+ else
+ seq_printf(m, " %s", probe_symbol(tp));
+
+ for (i = 0; i < tp->nr_args; i++) {
+ ret = probe_arg_string(buf, MAX_ARGSTR_LEN, &tp->args[i].fetch);
+ if (ret < 0) {
+ pr_warning("Argument%d decoding error(%d).\n", i, ret);
+ return ret;
+ }
+ seq_printf(m, " %s=%s", tp->args[i].name, buf);
+ }
+ seq_printf(m, "\n");
+ return 0;
+}
+
+static const struct seq_operations probes_seq_op = {
+ .start = probes_seq_start,
+ .next = probes_seq_next,
+ .stop = probes_seq_stop,
+ .show = probes_seq_show
+};
+
+static int probes_open(struct inode *inode, struct file *file)
+{
+ if ((file->f_mode & FMODE_WRITE) &&
+ (file->f_flags & O_TRUNC))
+ cleanup_all_probes();
+
+ return seq_open(file, &probes_seq_op);
+}
+
+static int command_trace_probe(const char *buf)
+{
+ char **argv;
+ int argc = 0, ret = 0;
+
+ argv = argv_split(GFP_KERNEL, buf, &argc);
+ if (!argv)
+ return -ENOMEM;
+
+ if (argc)
+ ret = create_trace_probe(argc, argv);
+
+ argv_free(argv);
+ return ret;
+}
+
+#define WRITE_BUFSIZE 128
+
+static ssize_t probes_write(struct file *file, const char __user *buffer,
+ size_t count, loff_t *ppos)
+{
+ char *kbuf, *tmp;
+ int ret;
+ size_t done;
+ size_t size;
+
+ kbuf = kmalloc(WRITE_BUFSIZE, GFP_KERNEL);
+ if (!kbuf)
+ return -ENOMEM;
+
+ ret = done = 0;
+ while (done < count) {
+ size = count - done;
+ if (size >= WRITE_BUFSIZE)
+ size = WRITE_BUFSIZE - 1;
+ if (copy_from_user(kbuf, buffer + done, size)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ kbuf[size] = '\0';
+ tmp = strchr(kbuf, '\n');
+ if (tmp) {
+ *tmp = '\0';
+ size = tmp - kbuf + 1;
+ } else if (done + size < count) {
+ pr_warning("Line length is too long: "
+ "Should be less than %d.", WRITE_BUFSIZE);
+ ret = -EINVAL;
+ goto out;
+ }
+ done += size;
+ /* Remove comments */
+ tmp = strchr(kbuf, '#');
+ if (tmp)
+ *tmp = '\0';
+
+ ret = command_trace_probe(kbuf);
+ if (ret)
+ goto out;
+ }
+ ret = done;
+out:
+ kfree(kbuf);
+ return ret;
+}
+
+static const struct file_operations kprobe_events_ops = {
+ .owner = THIS_MODULE,
+ .open = probes_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+ .write = probes_write,
+};
+
+/* Probes profiling interfaces */
+static int probes_profile_seq_show(struct seq_file *m, void *v)
+{
+ struct trace_probe *tp = v;
+
+ seq_printf(m, " %-44s %15lu %15lu\n", tp->call.name, tp->nhit,
+ tp->rp.kp.nmissed);
+
+ return 0;
+}
+
+static const struct seq_operations profile_seq_op = {
+ .start = probes_seq_start,
+ .next = probes_seq_next,
+ .stop = probes_seq_stop,
+ .show = probes_profile_seq_show
+};
+
+static int profile_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &profile_seq_op);
+}
+
+static const struct file_operations kprobe_profile_ops = {
+ .owner = THIS_MODULE,
+ .open = profile_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+/* Kprobe handler */
+static __kprobes int kprobe_trace_func(struct kprobe *kp, struct pt_regs *regs)
+{
+ struct trace_probe *tp = container_of(kp, struct trace_probe, rp.kp);
+ struct kprobe_trace_entry *entry;
+ struct ring_buffer_event *event;
+ struct ring_buffer *buffer;
+ int size, i, pc;
+ unsigned long irq_flags;
+ struct ftrace_event_call *call = &tp->call;
+
+ tp->nhit++;
+
+ local_save_flags(irq_flags);
+ pc = preempt_count();
+
+ size = SIZEOF_KPROBE_TRACE_ENTRY(tp->nr_args);
+
+ event = trace_current_buffer_lock_reserve(&buffer, call->id, size,
+ irq_flags, pc);
+ if (!event)
+ return 0;
+
+ entry = ring_buffer_event_data(event);
+ entry->nargs = tp->nr_args;
+ entry->ip = (unsigned long)kp->addr;
+ for (i = 0; i < tp->nr_args; i++)
+ entry->args[i] = call_fetch(&tp->args[i].fetch, regs);
+
+ if (!filter_current_check_discard(buffer, call, entry, event))
+ trace_nowake_buffer_unlock_commit(buffer, event, irq_flags, pc);
+ return 0;
+}
+
+/* Kretprobe handler */
+static __kprobes int kretprobe_trace_func(struct kretprobe_instance *ri,
+ struct pt_regs *regs)
+{
+ struct trace_probe *tp = container_of(ri->rp, struct trace_probe, rp);
+ struct kretprobe_trace_entry *entry;
+ struct ring_buffer_event *event;
+ struct ring_buffer *buffer;
+ int size, i, pc;
+ unsigned long irq_flags;
+ struct ftrace_event_call *call = &tp->call;
+
+ local_save_flags(irq_flags);
+ pc = preempt_count();
+
+ size = SIZEOF_KRETPROBE_TRACE_ENTRY(tp->nr_args);
+
+ event = trace_current_buffer_lock_reserve(&buffer, call->id, size,
+ irq_flags, pc);
+ if (!event)
+ return 0;
+
+ entry = ring_buffer_event_data(event);
+ entry->nargs = tp->nr_args;
+ entry->func = (unsigned long)tp->rp.kp.addr;
+ entry->ret_ip = (unsigned long)ri->ret_addr;
+ for (i = 0; i < tp->nr_args; i++)
+ entry->args[i] = call_fetch(&tp->args[i].fetch, regs);
+
+ if (!filter_current_check_discard(buffer, call, entry, event))
+ trace_nowake_buffer_unlock_commit(buffer, event, irq_flags, pc);
+
+ return 0;
+}
+
+/* Event entry printers */
+enum print_line_t
+print_kprobe_event(struct trace_iterator *iter, int flags)
+{
+ struct kprobe_trace_entry *field;
+ struct trace_seq *s = &iter->seq;
+ struct trace_event *event;
+ struct trace_probe *tp;
+ int i;
+
+ field = (struct kprobe_trace_entry *)iter->ent;
+ event = ftrace_find_event(field->ent.type);
+ tp = container_of(event, struct trace_probe, event);
+
+ if (!trace_seq_printf(s, "%s: (", tp->call.name))
+ goto partial;
+
+ if (!seq_print_ip_sym(s, field->ip, flags | TRACE_ITER_SYM_OFFSET))
+ goto partial;
+
+ if (!trace_seq_puts(s, ")"))
+ goto partial;
+
+ for (i = 0; i < field->nargs; i++)
+ if (!trace_seq_printf(s, " %s=%lx",
+ tp->args[i].name, field->args[i]))
+ goto partial;
+
+ if (!trace_seq_puts(s, "\n"))
+ goto partial;
+
+ return TRACE_TYPE_HANDLED;
+partial:
+ return TRACE_TYPE_PARTIAL_LINE;
+}
+
+enum print_line_t
+print_kretprobe_event(struct trace_iterator *iter, int flags)
+{
+ struct kretprobe_trace_entry *field;
+ struct trace_seq *s = &iter->seq;
+ struct trace_event *event;
+ struct trace_probe *tp;
+ int i;
+
+ field = (struct kretprobe_trace_entry *)iter->ent;
+ event = ftrace_find_event(field->ent.type);
+ tp = container_of(event, struct trace_probe, event);
+
+ if (!trace_seq_printf(s, "%s: (", tp->call.name))
+ goto partial;
+
+ if (!seq_print_ip_sym(s, field->ret_ip, flags | TRACE_ITER_SYM_OFFSET))
+ goto partial;
+
+ if (!trace_seq_puts(s, " <- "))
+ goto partial;
+
+ if (!seq_print_ip_sym(s, field->func, flags & ~TRACE_ITER_SYM_OFFSET))
+ goto partial;
+
+ if (!trace_seq_puts(s, ")"))
+ goto partial;
+
+ for (i = 0; i < field->nargs; i++)
+ if (!trace_seq_printf(s, " %s=%lx",
+ tp->args[i].name, field->args[i]))
+ goto partial;
+
+ if (!trace_seq_puts(s, "\n"))
+ goto partial;
+
+ return TRACE_TYPE_HANDLED;
+partial:
+ return TRACE_TYPE_PARTIAL_LINE;
+}
+
+static int probe_event_enable(struct ftrace_event_call *call)
+{
+ struct trace_probe *tp = (struct trace_probe *)call->data;
+
+ tp->flags |= TP_FLAG_TRACE;
+ if (probe_is_return(tp))
+ return enable_kretprobe(&tp->rp);
+ else
+ return enable_kprobe(&tp->rp.kp);
+}
+
+static void probe_event_disable(struct ftrace_event_call *call)
+{
+ struct trace_probe *tp = (struct trace_probe *)call->data;
+
+ tp->flags &= ~TP_FLAG_TRACE;
+ if (!(tp->flags & (TP_FLAG_TRACE | TP_FLAG_PROFILE))) {
+ if (probe_is_return(tp))
+ disable_kretprobe(&tp->rp);
+ else
+ disable_kprobe(&tp->rp.kp);
+ }
+}
+
+static int probe_event_raw_init(struct ftrace_event_call *event_call)
+{
+ INIT_LIST_HEAD(&event_call->fields);
+
+ return 0;
+}
+
+#undef DEFINE_FIELD
+#define DEFINE_FIELD(type, item, name, is_signed) \
+ do { \
+ ret = trace_define_field(event_call, #type, name, \
+ offsetof(typeof(field), item), \
+ sizeof(field.item), is_signed, \
+ FILTER_OTHER); \
+ if (ret) \
+ return ret; \
+ } while (0)
+
+static int kprobe_event_define_fields(struct ftrace_event_call *event_call)
+{
+ int ret, i;
+ struct kprobe_trace_entry field;
+ struct trace_probe *tp = (struct trace_probe *)event_call->data;
+
+ ret = trace_define_common_fields(event_call);
+ if (!ret)
+ return ret;
+
+ DEFINE_FIELD(unsigned long, ip, FIELD_STRING_IP, 0);
+ DEFINE_FIELD(int, nargs, FIELD_STRING_NARGS, 1);
+ /* Set argument names as fields */
+ for (i = 0; i < tp->nr_args; i++)
+ DEFINE_FIELD(unsigned long, args[i], tp->args[i].name, 0);
+ return 0;
+}
+
+static int kretprobe_event_define_fields(struct ftrace_event_call *event_call)
+{
+ int ret, i;
+ struct kretprobe_trace_entry field;
+ struct trace_probe *tp = (struct trace_probe *)event_call->data;
+
+ ret = trace_define_common_fields(event_call);
+ if (!ret)
+ return ret;
+
+ DEFINE_FIELD(unsigned long, func, FIELD_STRING_FUNC, 0);
+ DEFINE_FIELD(unsigned long, ret_ip, FIELD_STRING_RETIP, 0);
+ DEFINE_FIELD(int, nargs, FIELD_STRING_NARGS, 1);
+ /* Set argument names as fields */
+ for (i = 0; i < tp->nr_args; i++)
+ DEFINE_FIELD(unsigned long, args[i], tp->args[i].name, 0);
+ return 0;
+}
+
+static int __probe_event_show_format(struct trace_seq *s,
+ struct trace_probe *tp, const char *fmt,
+ const char *arg)
+{
+ int i;
+
+ /* Show format */
+ if (!trace_seq_printf(s, "\nprint fmt: \"%s", fmt))
+ return 0;
+
+ for (i = 0; i < tp->nr_args; i++)
+ if (!trace_seq_printf(s, " %s=%%lx", tp->args[i].name))
+ return 0;
+
+ if (!trace_seq_printf(s, "\", %s", arg))
+ return 0;
+
+ for (i = 0; i < tp->nr_args; i++)
+ if (!trace_seq_printf(s, ", REC->%s", tp->args[i].name))
+ return 0;
+
+ return trace_seq_puts(s, "\n");
+}
+
+#undef SHOW_FIELD
+#define SHOW_FIELD(type, item, name) \
+ do { \
+ ret = trace_seq_printf(s, "\tfield: " #type " %s;\t" \
+ "offset:%u;\tsize:%u;\n", name, \
+ (unsigned int)offsetof(typeof(field), item),\
+ (unsigned int)sizeof(type)); \
+ if (!ret) \
+ return 0; \
+ } while (0)
+
+static int kprobe_event_show_format(struct ftrace_event_call *call,
+ struct trace_seq *s)
+{
+ struct kprobe_trace_entry field __attribute__((unused));
+ int ret, i;
+ struct trace_probe *tp = (struct trace_probe *)call->data;
+
+ SHOW_FIELD(unsigned long, ip, FIELD_STRING_IP);
+ SHOW_FIELD(int, nargs, FIELD_STRING_NARGS);
+
+ /* Show fields */
+ for (i = 0; i < tp->nr_args; i++)
+ SHOW_FIELD(unsigned long, args[i], tp->args[i].name);
+ trace_seq_puts(s, "\n");
+
+ return __probe_event_show_format(s, tp, "(%lx)",
+ "REC->" FIELD_STRING_IP);
+}
+
+static int kretprobe_event_show_format(struct ftrace_event_call *call,
+ struct trace_seq *s)
+{
+ struct kretprobe_trace_entry field __attribute__((unused));
+ int ret, i;
+ struct trace_probe *tp = (struct trace_probe *)call->data;
+
+ SHOW_FIELD(unsigned long, func, FIELD_STRING_FUNC);
+ SHOW_FIELD(unsigned long, ret_ip, FIELD_STRING_RETIP);
+ SHOW_FIELD(int, nargs, FIELD_STRING_NARGS);
+
+ /* Show fields */
+ for (i = 0; i < tp->nr_args; i++)
+ SHOW_FIELD(unsigned long, args[i], tp->args[i].name);
+ trace_seq_puts(s, "\n");
+
+ return __probe_event_show_format(s, tp, "(%lx <- %lx)",
+ "REC->" FIELD_STRING_FUNC
+ ", REC->" FIELD_STRING_RETIP);
+}
+
+#ifdef CONFIG_EVENT_PROFILE
+
+/* Kprobe profile handler */
+static __kprobes int kprobe_profile_func(struct kprobe *kp,
+ struct pt_regs *regs)
+{
+ struct trace_probe *tp = container_of(kp, struct trace_probe, rp.kp);
+ struct ftrace_event_call *call = &tp->call;
+ struct kprobe_trace_entry *entry;
+ struct trace_entry *ent;
+ int size, __size, i, pc, __cpu;
+ unsigned long irq_flags;
+ char *trace_buf;
+ char *raw_data;
+ int rctx;
+
+ pc = preempt_count();
+ __size = SIZEOF_KPROBE_TRACE_ENTRY(tp->nr_args);
+ size = ALIGN(__size + sizeof(u32), sizeof(u64));
+ size -= sizeof(u32);
+ if (WARN_ONCE(size > FTRACE_MAX_PROFILE_SIZE,
+ "profile buffer not large enough"))
+ return 0;
+
+ /*
+ * Protect the non nmi buffer
+ * This also protects the rcu read side
+ */
+ local_irq_save(irq_flags);
+
+ rctx = perf_swevent_get_recursion_context();
+ if (rctx < 0)
+ goto end_recursion;
+
+ __cpu = smp_processor_id();
+
+ if (in_nmi())
+ trace_buf = rcu_dereference(perf_trace_buf_nmi);
+ else
+ trace_buf = rcu_dereference(perf_trace_buf);
+
+ if (!trace_buf)
+ goto end;
+
+ raw_data = per_cpu_ptr(trace_buf, __cpu);
+
+ /* Zero dead bytes from alignment to avoid buffer leak to userspace */
+ *(u64 *)(&raw_data[size - sizeof(u64)]) = 0ULL;
+ entry = (struct kprobe_trace_entry *)raw_data;
+ ent = &entry->ent;
+
+ tracing_generic_entry_update(ent, irq_flags, pc);
+ ent->type = call->id;
+ entry->nargs = tp->nr_args;
+ entry->ip = (unsigned long)kp->addr;
+ for (i = 0; i < tp->nr_args; i++)
+ entry->args[i] = call_fetch(&tp->args[i].fetch, regs);
+ perf_tp_event(call->id, entry->ip, 1, entry, size);
+
+end:
+ perf_swevent_put_recursion_context(rctx);
+end_recursion:
+ local_irq_restore(irq_flags);
+
+ return 0;
+}
+
+/* Kretprobe profile handler */
+static __kprobes int kretprobe_profile_func(struct kretprobe_instance *ri,
+ struct pt_regs *regs)
+{
+ struct trace_probe *tp = container_of(ri->rp, struct trace_probe, rp);
+ struct ftrace_event_call *call = &tp->call;
+ struct kretprobe_trace_entry *entry;
+ struct trace_entry *ent;
+ int size, __size, i, pc, __cpu;
+ unsigned long irq_flags;
+ char *trace_buf;
+ char *raw_data;
+ int rctx;
+
+ pc = preempt_count();
+ __size = SIZEOF_KRETPROBE_TRACE_ENTRY(tp->nr_args);
+ size = ALIGN(__size + sizeof(u32), sizeof(u64));
+ size -= sizeof(u32);
+ if (WARN_ONCE(size > FTRACE_MAX_PROFILE_SIZE,
+ "profile buffer not large enough"))
+ return 0;
+
+ /*
+ * Protect the non nmi buffer
+ * This also protects the rcu read side
+ */
+ local_irq_save(irq_flags);
+
+ rctx = perf_swevent_get_recursion_context();
+ if (rctx < 0)
+ goto end_recursion;
+
+ __cpu = smp_processor_id();
+
+ if (in_nmi())
+ trace_buf = rcu_dereference(perf_trace_buf_nmi);
+ else
+ trace_buf = rcu_dereference(perf_trace_buf);
+
+ if (!trace_buf)
+ goto end;
+
+ raw_data = per_cpu_ptr(trace_buf, __cpu);
+
+ /* Zero dead bytes from alignment to avoid buffer leak to userspace */
+ *(u64 *)(&raw_data[size - sizeof(u64)]) = 0ULL;
+ entry = (struct kretprobe_trace_entry *)raw_data;
+ ent = &entry->ent;
+
+ tracing_generic_entry_update(ent, irq_flags, pc);
+ ent->type = call->id;
+ entry->nargs = tp->nr_args;
+ entry->func = (unsigned long)tp->rp.kp.addr;
+ entry->ret_ip = (unsigned long)ri->ret_addr;
+ for (i = 0; i < tp->nr_args; i++)
+ entry->args[i] = call_fetch(&tp->args[i].fetch, regs);
+ perf_tp_event(call->id, entry->ret_ip, 1, entry, size);
+
+end:
+ perf_swevent_put_recursion_context(rctx);
+end_recursion:
+ local_irq_restore(irq_flags);
+
+ return 0;
+}
+
+static int probe_profile_enable(struct ftrace_event_call *call)
+{
+ struct trace_probe *tp = (struct trace_probe *)call->data;
+
+ tp->flags |= TP_FLAG_PROFILE;
+
+ if (probe_is_return(tp))
+ return enable_kretprobe(&tp->rp);
+ else
+ return enable_kprobe(&tp->rp.kp);
+}
+
+static void probe_profile_disable(struct ftrace_event_call *call)
+{
+ struct trace_probe *tp = (struct trace_probe *)call->data;
+
+ tp->flags &= ~TP_FLAG_PROFILE;
+
+ if (!(tp->flags & TP_FLAG_TRACE)) {
+ if (probe_is_return(tp))
+ disable_kretprobe(&tp->rp);
+ else
+ disable_kprobe(&tp->rp.kp);
+ }
+}
+#endif /* CONFIG_EVENT_PROFILE */
+
+
+static __kprobes
+int kprobe_dispatcher(struct kprobe *kp, struct pt_regs *regs)
+{
+ struct trace_probe *tp = container_of(kp, struct trace_probe, rp.kp);
+
+ if (tp->flags & TP_FLAG_TRACE)
+ kprobe_trace_func(kp, regs);
+#ifdef CONFIG_EVENT_PROFILE
+ if (tp->flags & TP_FLAG_PROFILE)
+ kprobe_profile_func(kp, regs);
+#endif /* CONFIG_EVENT_PROFILE */
+ return 0; /* We don't tweek kernel, so just return 0 */
+}
+
+static __kprobes
+int kretprobe_dispatcher(struct kretprobe_instance *ri, struct pt_regs *regs)
+{
+ struct trace_probe *tp = container_of(ri->rp, struct trace_probe, rp);
+
+ if (tp->flags & TP_FLAG_TRACE)
+ kretprobe_trace_func(ri, regs);
+#ifdef CONFIG_EVENT_PROFILE
+ if (tp->flags & TP_FLAG_PROFILE)
+ kretprobe_profile_func(ri, regs);
+#endif /* CONFIG_EVENT_PROFILE */
+ return 0; /* We don't tweek kernel, so just return 0 */
+}
+
+static int register_probe_event(struct trace_probe *tp)
+{
+ struct ftrace_event_call *call = &tp->call;
+ int ret;
+
+ /* Initialize ftrace_event_call */
+ if (probe_is_return(tp)) {
+ tp->event.trace = print_kretprobe_event;
+ call->raw_init = probe_event_raw_init;
+ call->show_format = kretprobe_event_show_format;
+ call->define_fields = kretprobe_event_define_fields;
+ } else {
+ tp->event.trace = print_kprobe_event;
+ call->raw_init = probe_event_raw_init;
+ call->show_format = kprobe_event_show_format;
+ call->define_fields = kprobe_event_define_fields;
+ }
+ call->event = &tp->event;
+ call->id = register_ftrace_event(&tp->event);
+ if (!call->id)
+ return -ENODEV;
+ call->enabled = 0;
+ call->regfunc = probe_event_enable;
+ call->unregfunc = probe_event_disable;
+
+#ifdef CONFIG_EVENT_PROFILE
+ atomic_set(&call->profile_count, -1);
+ call->profile_enable = probe_profile_enable;
+ call->profile_disable = probe_profile_disable;
+#endif
+ call->data = tp;
+ ret = trace_add_event_call(call);
+ if (ret) {
+ pr_info("Failed to register kprobe event: %s\n", call->name);
+ unregister_ftrace_event(&tp->event);
+ }
+ return ret;
+}
+
+static void unregister_probe_event(struct trace_probe *tp)
+{
+ /* tp->event is unregistered in trace_remove_event_call() */
+ trace_remove_event_call(&tp->call);
+}
+
+/* Make a debugfs interface for controling probe points */
+static __init int init_kprobe_trace(void)
+{
+ struct dentry *d_tracer;
+ struct dentry *entry;
+
+ d_tracer = tracing_init_dentry();
+ if (!d_tracer)
+ return 0;
+
+ entry = debugfs_create_file("kprobe_events", 0644, d_tracer,
+ NULL, &kprobe_events_ops);
+
+ /* Event list interface */
+ if (!entry)
+ pr_warning("Could not create debugfs "
+ "'kprobe_events' entry\n");
+
+ /* Profile interface */
+ entry = debugfs_create_file("kprobe_profile", 0444, d_tracer,
+ NULL, &kprobe_profile_ops);
+
+ if (!entry)
+ pr_warning("Could not create debugfs "
+ "'kprobe_profile' entry\n");
+ return 0;
+}
+fs_initcall(init_kprobe_trace);
+
+
+#ifdef CONFIG_FTRACE_STARTUP_TEST
+
+static int kprobe_trace_selftest_target(int a1, int a2, int a3,
+ int a4, int a5, int a6)
+{
+ return a1 + a2 + a3 + a4 + a5 + a6;
+}
+
+static __init int kprobe_trace_self_tests_init(void)
+{
+ int ret;
+ int (*target)(int, int, int, int, int, int);
+
+ target = kprobe_trace_selftest_target;
+
+ pr_info("Testing kprobe tracing: ");
+
+ ret = command_trace_probe("p:testprobe kprobe_trace_selftest_target "
+ "$arg1 $arg2 $arg3 $arg4 $stack $stack0");
+ if (WARN_ON_ONCE(ret))
+ pr_warning("error enabling function entry\n");
+
+ ret = command_trace_probe("r:testprobe2 kprobe_trace_selftest_target "
+ "$retval");
+ if (WARN_ON_ONCE(ret))
+ pr_warning("error enabling function return\n");
+
+ ret = target(1, 2, 3, 4, 5, 6);
+
+ cleanup_all_probes();
+
+ pr_cont("OK\n");
+ return 0;
+}
+
+late_initcall(kprobe_trace_self_tests_init);
+
+#endif
diff --git a/kernel/trace/trace_ksym.c b/kernel/trace/trace_ksym.c
new file mode 100644
index 0000000000000000000000000000000000000000..ddfa0fd43bc0ebab1fa4953918a41323f409e08a
--- /dev/null
+++ b/kernel/trace/trace_ksym.c
@@ -0,0 +1,550 @@
+/*
+ * trace_ksym.c - Kernel Symbol Tracer
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) IBM Corporation, 2009
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include "trace_output.h"
+#include "trace_stat.h"
+#include "trace.h"
+
+#include
+#include
+
+/*
+ * For now, let us restrict the no. of symbols traced simultaneously to number
+ * of available hardware breakpoint registers.
+ */
+#define KSYM_TRACER_MAX HBP_NUM
+
+#define KSYM_TRACER_OP_LEN 3 /* rw- */
+
+struct trace_ksym {
+ struct perf_event **ksym_hbp;
+ struct perf_event_attr attr;
+#ifdef CONFIG_PROFILE_KSYM_TRACER
+ unsigned long counter;
+#endif
+ struct hlist_node ksym_hlist;
+};
+
+static struct trace_array *ksym_trace_array;
+
+static unsigned int ksym_filter_entry_count;
+static unsigned int ksym_tracing_enabled;
+
+static HLIST_HEAD(ksym_filter_head);
+
+static DEFINE_MUTEX(ksym_tracer_mutex);
+
+#ifdef CONFIG_PROFILE_KSYM_TRACER
+
+#define MAX_UL_INT 0xffffffff
+
+void ksym_collect_stats(unsigned long hbp_hit_addr)
+{
+ struct hlist_node *node;
+ struct trace_ksym *entry;
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(entry, node, &ksym_filter_head, ksym_hlist) {
+ if ((entry->attr.bp_addr == hbp_hit_addr) &&
+ (entry->counter <= MAX_UL_INT)) {
+ entry->counter++;
+ break;
+ }
+ }
+ rcu_read_unlock();
+}
+#endif /* CONFIG_PROFILE_KSYM_TRACER */
+
+void ksym_hbp_handler(struct perf_event *hbp, void *data)
+{
+ struct ring_buffer_event *event;
+ struct ksym_trace_entry *entry;
+ struct pt_regs *regs = data;
+ struct ring_buffer *buffer;
+ int pc;
+
+ if (!ksym_tracing_enabled)
+ return;
+
+ buffer = ksym_trace_array->buffer;
+
+ pc = preempt_count();
+
+ event = trace_buffer_lock_reserve(buffer, TRACE_KSYM,
+ sizeof(*entry), 0, pc);
+ if (!event)
+ return;
+
+ entry = ring_buffer_event_data(event);
+ entry->ip = instruction_pointer(regs);
+ entry->type = hw_breakpoint_type(hbp);
+ entry->addr = hw_breakpoint_addr(hbp);
+ strlcpy(entry->cmd, current->comm, TASK_COMM_LEN);
+
+#ifdef CONFIG_PROFILE_KSYM_TRACER
+ ksym_collect_stats(hw_breakpoint_addr(hbp));
+#endif /* CONFIG_PROFILE_KSYM_TRACER */
+
+ trace_buffer_unlock_commit(buffer, event, 0, pc);
+}
+
+/* Valid access types are represented as
+ *
+ * rw- : Set Read/Write Access Breakpoint
+ * -w- : Set Write Access Breakpoint
+ * --- : Clear Breakpoints
+ * --x : Set Execution Break points (Not available yet)
+ *
+ */
+static int ksym_trace_get_access_type(char *str)
+{
+ int access = 0;
+
+ if (str[0] == 'r')
+ access |= HW_BREAKPOINT_R;
+
+ if (str[1] == 'w')
+ access |= HW_BREAKPOINT_W;
+
+ if (str[2] == 'x')
+ access |= HW_BREAKPOINT_X;
+
+ switch (access) {
+ case HW_BREAKPOINT_R:
+ case HW_BREAKPOINT_W:
+ case HW_BREAKPOINT_W | HW_BREAKPOINT_R:
+ return access;
+ default:
+ return -EINVAL;
+ }
+}
+
+/*
+ * There can be several possible malformed requests and we attempt to capture
+ * all of them. We enumerate some of the rules
+ * 1. We will not allow kernel symbols with ':' since it is used as a delimiter.
+ * i.e. multiple ':' symbols disallowed. Possible uses are of the form
+ * ::.
+ * 2. No delimiter symbol ':' in the input string
+ * 3. Spurious operator symbols or symbols not in their respective positions
+ * 4. :--- i.e. clear breakpoint request when ksym_name not in file
+ * 5. Kernel symbol not a part of /proc/kallsyms
+ * 6. Duplicate requests
+ */
+static int parse_ksym_trace_str(char *input_string, char **ksymname,
+ unsigned long *addr)
+{
+ int ret;
+
+ *ksymname = strsep(&input_string, ":");
+ *addr = kallsyms_lookup_name(*ksymname);
+
+ /* Check for malformed request: (2), (1) and (5) */
+ if ((!input_string) ||
+ (strlen(input_string) != KSYM_TRACER_OP_LEN) ||
+ (*addr == 0))
+ return -EINVAL;;
+
+ ret = ksym_trace_get_access_type(input_string);
+
+ return ret;
+}
+
+int process_new_ksym_entry(char *ksymname, int op, unsigned long addr)
+{
+ struct trace_ksym *entry;
+ int ret = -ENOMEM;
+
+ if (ksym_filter_entry_count >= KSYM_TRACER_MAX) {
+ printk(KERN_ERR "ksym_tracer: Maximum limit:(%d) reached. No"
+ " new requests for tracing can be accepted now.\n",
+ KSYM_TRACER_MAX);
+ return -ENOSPC;
+ }
+
+ entry = kzalloc(sizeof(struct trace_ksym), GFP_KERNEL);
+ if (!entry)
+ return -ENOMEM;
+
+ hw_breakpoint_init(&entry->attr);
+
+ entry->attr.bp_type = op;
+ entry->attr.bp_addr = addr;
+ entry->attr.bp_len = HW_BREAKPOINT_LEN_4;
+
+ ret = -EAGAIN;
+ entry->ksym_hbp = register_wide_hw_breakpoint(&entry->attr,
+ ksym_hbp_handler);
+
+ if (IS_ERR(entry->ksym_hbp)) {
+ ret = PTR_ERR(entry->ksym_hbp);
+ printk(KERN_INFO "ksym_tracer request failed. Try again"
+ " later!!\n");
+ goto err;
+ }
+
+ hlist_add_head_rcu(&(entry->ksym_hlist), &ksym_filter_head);
+ ksym_filter_entry_count++;
+
+ return 0;
+
+err:
+ kfree(entry);
+
+ return ret;
+}
+
+static ssize_t ksym_trace_filter_read(struct file *filp, char __user *ubuf,
+ size_t count, loff_t *ppos)
+{
+ struct trace_ksym *entry;
+ struct hlist_node *node;
+ struct trace_seq *s;
+ ssize_t cnt = 0;
+ int ret;
+
+ s = kmalloc(sizeof(*s), GFP_KERNEL);
+ if (!s)
+ return -ENOMEM;
+ trace_seq_init(s);
+
+ mutex_lock(&ksym_tracer_mutex);
+
+ hlist_for_each_entry(entry, node, &ksym_filter_head, ksym_hlist) {
+ ret = trace_seq_printf(s, "%pS:", (void *)entry->attr.bp_addr);
+ if (entry->attr.bp_type == HW_BREAKPOINT_R)
+ ret = trace_seq_puts(s, "r--\n");
+ else if (entry->attr.bp_type == HW_BREAKPOINT_W)
+ ret = trace_seq_puts(s, "-w-\n");
+ else if (entry->attr.bp_type == (HW_BREAKPOINT_W | HW_BREAKPOINT_R))
+ ret = trace_seq_puts(s, "rw-\n");
+ WARN_ON_ONCE(!ret);
+ }
+
+ cnt = simple_read_from_buffer(ubuf, count, ppos, s->buffer, s->len);
+
+ mutex_unlock(&ksym_tracer_mutex);
+
+ kfree(s);
+
+ return cnt;
+}
+
+static void __ksym_trace_reset(void)
+{
+ struct trace_ksym *entry;
+ struct hlist_node *node, *node1;
+
+ mutex_lock(&ksym_tracer_mutex);
+ hlist_for_each_entry_safe(entry, node, node1, &ksym_filter_head,
+ ksym_hlist) {
+ unregister_wide_hw_breakpoint(entry->ksym_hbp);
+ ksym_filter_entry_count--;
+ hlist_del_rcu(&(entry->ksym_hlist));
+ synchronize_rcu();
+ kfree(entry);
+ }
+ mutex_unlock(&ksym_tracer_mutex);
+}
+
+static ssize_t ksym_trace_filter_write(struct file *file,
+ const char __user *buffer,
+ size_t count, loff_t *ppos)
+{
+ struct trace_ksym *entry;
+ struct hlist_node *node;
+ char *input_string, *ksymname = NULL;
+ unsigned long ksym_addr = 0;
+ int ret, op, changed = 0;
+
+ input_string = kzalloc(count + 1, GFP_KERNEL);
+ if (!input_string)
+ return -ENOMEM;
+
+ if (copy_from_user(input_string, buffer, count)) {
+ kfree(input_string);
+ return -EFAULT;
+ }
+ input_string[count] = '\0';
+
+ strstrip(input_string);
+
+ /*
+ * Clear all breakpoints if:
+ * 1: echo > ksym_trace_filter
+ * 2: echo 0 > ksym_trace_filter
+ * 3: echo "*:---" > ksym_trace_filter
+ */
+ if (!input_string[0] || !strcmp(input_string, "0") ||
+ !strcmp(input_string, "*:---")) {
+ __ksym_trace_reset();
+ kfree(input_string);
+ return count;
+ }
+
+ ret = op = parse_ksym_trace_str(input_string, &ksymname, &ksym_addr);
+ if (ret < 0) {
+ kfree(input_string);
+ return ret;
+ }
+
+ mutex_lock(&ksym_tracer_mutex);
+
+ ret = -EINVAL;
+ hlist_for_each_entry(entry, node, &ksym_filter_head, ksym_hlist) {
+ if (entry->attr.bp_addr == ksym_addr) {
+ /* Check for malformed request: (6) */
+ if (entry->attr.bp_type != op)
+ changed = 1;
+ else
+ goto out;
+ break;
+ }
+ }
+ if (changed) {
+ unregister_wide_hw_breakpoint(entry->ksym_hbp);
+ entry->attr.bp_type = op;
+ ret = 0;
+ if (op > 0) {
+ entry->ksym_hbp =
+ register_wide_hw_breakpoint(&entry->attr,
+ ksym_hbp_handler);
+ if (IS_ERR(entry->ksym_hbp))
+ ret = PTR_ERR(entry->ksym_hbp);
+ else
+ goto out;
+ }
+ /* Error or "symbol:---" case: drop it */
+ ksym_filter_entry_count--;
+ hlist_del_rcu(&(entry->ksym_hlist));
+ synchronize_rcu();
+ kfree(entry);
+ goto out;
+ } else {
+ /* Check for malformed request: (4) */
+ if (op == 0)
+ goto out;
+ ret = process_new_ksym_entry(ksymname, op, ksym_addr);
+ }
+out:
+ mutex_unlock(&ksym_tracer_mutex);
+
+ kfree(input_string);
+
+ if (!ret)
+ ret = count;
+ return ret;
+}
+
+static const struct file_operations ksym_tracing_fops = {
+ .open = tracing_open_generic,
+ .read = ksym_trace_filter_read,
+ .write = ksym_trace_filter_write,
+};
+
+static void ksym_trace_reset(struct trace_array *tr)
+{
+ ksym_tracing_enabled = 0;
+ __ksym_trace_reset();
+}
+
+static int ksym_trace_init(struct trace_array *tr)
+{
+ int cpu, ret = 0;
+
+ for_each_online_cpu(cpu)
+ tracing_reset(tr, cpu);
+ ksym_tracing_enabled = 1;
+ ksym_trace_array = tr;
+
+ return ret;
+}
+
+static void ksym_trace_print_header(struct seq_file *m)
+{
+ seq_puts(m,
+ "# TASK-PID CPU# Symbol "
+ "Type Function\n");
+ seq_puts(m,
+ "# | | | "
+ " | |\n");
+}
+
+static enum print_line_t ksym_trace_output(struct trace_iterator *iter)
+{
+ struct trace_entry *entry = iter->ent;
+ struct trace_seq *s = &iter->seq;
+ struct ksym_trace_entry *field;
+ char str[KSYM_SYMBOL_LEN];
+ int ret;
+
+ if (entry->type != TRACE_KSYM)
+ return TRACE_TYPE_UNHANDLED;
+
+ trace_assign_type(field, entry);
+
+ ret = trace_seq_printf(s, "%11s-%-5d [%03d] %pS", field->cmd,
+ entry->pid, iter->cpu, (char *)field->addr);
+ if (!ret)
+ return TRACE_TYPE_PARTIAL_LINE;
+
+ switch (field->type) {
+ case HW_BREAKPOINT_R:
+ ret = trace_seq_printf(s, " R ");
+ break;
+ case HW_BREAKPOINT_W:
+ ret = trace_seq_printf(s, " W ");
+ break;
+ case HW_BREAKPOINT_R | HW_BREAKPOINT_W:
+ ret = trace_seq_printf(s, " RW ");
+ break;
+ default:
+ return TRACE_TYPE_PARTIAL_LINE;
+ }
+
+ if (!ret)
+ return TRACE_TYPE_PARTIAL_LINE;
+
+ sprint_symbol(str, field->ip);
+ ret = trace_seq_printf(s, "%s\n", str);
+ if (!ret)
+ return TRACE_TYPE_PARTIAL_LINE;
+
+ return TRACE_TYPE_HANDLED;
+}
+
+struct tracer ksym_tracer __read_mostly =
+{
+ .name = "ksym_tracer",
+ .init = ksym_trace_init,
+ .reset = ksym_trace_reset,
+#ifdef CONFIG_FTRACE_SELFTEST
+ .selftest = trace_selftest_startup_ksym,
+#endif
+ .print_header = ksym_trace_print_header,
+ .print_line = ksym_trace_output
+};
+
+__init static int init_ksym_trace(void)
+{
+ struct dentry *d_tracer;
+ struct dentry *entry;
+
+ d_tracer = tracing_init_dentry();
+ ksym_filter_entry_count = 0;
+
+ entry = debugfs_create_file("ksym_trace_filter", 0644, d_tracer,
+ NULL, &ksym_tracing_fops);
+ if (!entry)
+ pr_warning("Could not create debugfs "
+ "'ksym_trace_filter' file\n");
+
+ return register_tracer(&ksym_tracer);
+}
+device_initcall(init_ksym_trace);
+
+
+#ifdef CONFIG_PROFILE_KSYM_TRACER
+static int ksym_tracer_stat_headers(struct seq_file *m)
+{
+ seq_puts(m, " Access Type ");
+ seq_puts(m, " Symbol Counter\n");
+ seq_puts(m, " ----------- ");
+ seq_puts(m, " ------ -------\n");
+ return 0;
+}
+
+static int ksym_tracer_stat_show(struct seq_file *m, void *v)
+{
+ struct hlist_node *stat = v;
+ struct trace_ksym *entry;
+ int access_type = 0;
+ char fn_name[KSYM_NAME_LEN];
+
+ entry = hlist_entry(stat, struct trace_ksym, ksym_hlist);
+
+ access_type = entry->attr.bp_type;
+
+ switch (access_type) {
+ case HW_BREAKPOINT_R:
+ seq_puts(m, " R ");
+ break;
+ case HW_BREAKPOINT_W:
+ seq_puts(m, " W ");
+ break;
+ case HW_BREAKPOINT_R | HW_BREAKPOINT_W:
+ seq_puts(m, " RW ");
+ break;
+ default:
+ seq_puts(m, " NA ");
+ }
+
+ if (lookup_symbol_name(entry->attr.bp_addr, fn_name) >= 0)
+ seq_printf(m, " %-36s", fn_name);
+ else
+ seq_printf(m, " %-36s", "