- 17 5月, 2010 2 次提交
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由 Will Deacon 提交于
Enable hardware perf-events if CPU_HAS_PMU and select HAVE_OPROFILE if HAVE_PERF_EVENTS. If no hardware support is present, OProfile will fall back to timer mode. This patch also removes the old OProfile drivers in favour of the code implemented by perf. Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Will Deacon 提交于
There are currently two hardware performance monitoring subsystems in the kernel for ARM: OProfile and perf-events. This creates the following problems: 1.) Duplicate PMU accessor code. Inevitable code drift may lead to bugs in one framework that are fixed in the other. 2.) Locking issues. OProfile doesn't reprogram hardware counters between profiling runs if the events to be monitored have not been changed. This means that other profiling frameworks cannot use the counters if OProfile is in use. 3.) Due to differences in the two frameworks, it may not be possible to compare the results obtained by OProfile with those obtained by perf. This patch removes the OProfile PMU driver code and replaces it with calls to perf, therefore solving the issues mentioned above. The only userspace-visible change is the lack of SCU counter support for 11MPCore. This is currently unsupported by OProfile userspace tools anyway and therefore shouldn't cause any problems. Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Richter <robert.richter@amd.com> Cc: Jamie Iles <jamie.iles@picochip.com> Cc: Jean Pihet <jpihet@mvista.com> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 13 2月, 2010 1 次提交
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由 Jamie Iles 提交于
Make sure that we have access to the performance counters and that they aren't being used by perf events or anything else. Cc: Will Deacon <will.deacon@arm.com> Cc: Jean Pihet <jpihet@mvista.com> Signed-off-by: NJamie Iles <jamie.iles@picochip.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 22 12月, 2009 1 次提交
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由 Jean PIHET 提交于
On Oprofile ARMv7 the PMNC_D bit was set to lower the PMU IRQs and so to decrease the risk of errata #628216 from appearing. The effect of setting the PMNC_D bit is that the CCNT counter is divided by 64, making the program counter events count inaccurate. The new OMAP3 r4 cores should have that errata fixed. The PMNC_D bit should not be set, this patch fixes it. Signed-off-by: NJean Pihet <jpihet@mvista.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 18 10月, 2009 1 次提交
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由 Leo Chen 提交于
add oprofile pmu support for bcmring. Signed-off-by: NLeo Hao Chen <leochen@broadcom.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 30 5月, 2009 1 次提交
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由 Catalin Marinas 提交于
The IRQ_* macros need to be made visible via the mach/irqs.h file but without the additional macros defined in the board-*.h files. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 12 2月, 2009 1 次提交
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由 Catalin Marinas 提交于
This patch changes the walk_stacktrace and its callers for easier integration of stack unwinding. The arch/arm/kernel/stacktrace.h file is also moved to arch/arm/include/asm/stacktrace.h. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 13 1月, 2009 1 次提交
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由 Mike Travis 提交于
Impact: cleanup, update to new cpumask API Irq_desc.affinity and irq_desc.pending_mask are now cpumask_var_t's so access to them should be using the new cpumask API. Signed-off-by: NMike Travis <travis@sgi.com>
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- 13 12月, 2008 1 次提交
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由 Rusty Russell 提交于
Impact: change existing irq_chip API Not much point with gentle transition here: the struct irq_chip's setaffinity method signature needs to change. Fortunately, not widely used code, but hits a few architectures. Note: In irq_select_affinity() I save a temporary in by mangling irq_desc[irq].affinity directly. Ingo, does this break anything? (Folded in fix from KOSAKI Motohiro) Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NMike Travis <travis@sgi.com> Reviewed-by: NGrant Grundler <grundler@parisc-linux.org> Acked-by: NIngo Molnar <mingo@redhat.com> Cc: ralf@linux-mips.org Cc: grundler@parisc-linux.org Cc: jeremy@xensource.com Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
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- 06 9月, 2008 2 次提交
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由 Russell King 提交于
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 01 9月, 2008 2 次提交
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由 Jean PIHET 提交于
Add Oprofile kernel support for ARMv7. Tested on OMAP3430 and OMAP3530 chipsets (Cortex-A8). Signed-off-by: NJean Pihet <jpihet@mvista.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Add asm/cputype.h, moving functions and definitions from asm/system.h there. Convert all users of 'processor_id' to the more efficient read_cpuid_id() function. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 07 8月, 2008 2 次提交
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由 Russell King 提交于
This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Remove includes of asm/hardware.h in addition to asm/arch/hardware.h. Then, since asm/hardware.h only exists to include asm/arch/hardware.h, update everything to directly include asm/arch/hardware.h and remove asm/hardware.h. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 26 6月, 2008 1 次提交
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由 Jens Axboe 提交于
It's never used and the comments refer to nonatomic and retry interchangably. So get rid of it. Acked-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 29 4月, 2008 1 次提交
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由 Catalin Marinas 提交于
This patch fixes the Oprofile for ARM11MPCore compilation introduced by changes to the RealView code. Only RealView/EB is supported. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 25 1月, 2008 1 次提交
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由 Kay Sievers 提交于
All kobjects require a dynamically allocated name now. We no longer need to keep track if the name is statically assigned, we can just unconditionally free() all kobject names on cleanup. Signed-off-by: NKay Sievers <kay.sievers@vrfy.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 20 10月, 2007 1 次提交
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由 Mathieu Desnoyers 提交于
Quoting Randy: "It seems sad that this patch sources Kconfig.marker, a 7-line file, 20-something times. Yes, you (we) don't want to put those 7 lines into 20-something different files, so sourcing is the right thing. However, what you did for avr32 seems more on the right track to me: make _one_ Instrumentation support menu that includes PROFILING, OPROFILE, KPROBES, and MARKERS and then use (source) that in all of the arches." Signed-off-by: NMathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Acked-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 03 6月, 2007 1 次提交
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由 Russell King 提交于
BUG: using smp_processor_id() in preemptible [00000001] code: opcontrol/427 Resolve this bug by ensuring that we're not using smp_processor_id() in a preemptable context (by disabling preemption.) Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 30 5月, 2007 1 次提交
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由 Russell King 提交于
Fix lockdep warnings, caused by 'set_affinity' being called without the correct locks taken and local interrupts disabled: ================================= [ INFO: inconsistent lock state ] 2.6.22-rc2 #1 --------------------------------- inconsistent {in-hardirq-W} -> {hardirq-on-W} usage. swapper/1 [HC0[0]:SC0[0]:HE1:SE1] takes: (irq_controller_lock){++..}, at: [<c002be50>] gic_set_cpu+0x60/0xa0 {in-hardirq-W} state was registered at: [<c005d9a8>] lock_acquire+0x58/0x6c [<c0233068>] _spin_lock+0x40/0x50 [<c002c020>] gic_mask_irq+0x2c/0x6c [<c0069c64>] handle_level_irq+0x11c/0x14c [<c0020060>] asm_do_IRQ+0x60/0x84 [<c0020d2c>] __irq_svc+0x4c/0xc0 [<c000ed84>] __alloc_bootmem_nopanic+0x74/0x88 [<c000edb0>] __alloc_bootmem+0x18/0x3c [<c000fa00>] alloc_large_system_hash+0x16c/0x200 [<c00108dc>] inode_init_early+0x5c/0xa4 [<c00106dc>] vfs_caches_init_early+0x24/0xa0 [<c0008e54>] start_kernel+0x220/0x2fc [<00008078>] 0x8078 irq event stamp: 88438 hardirqs last enabled at (88438): [<c0020dc0>] preempt_return+0x20/0x2c hardirqs last disabled at (88436): [<c00417bc>] __do_softirq+0xb0/0x138 softirqs last enabled at (88437): [<c0041810>] __do_softirq+0x104/0x138 softirqs last disabled at (88428): [<c0041d9c>] irq_exit+0x68/0x7c other info that might help us debug this: no locks held by swapper/1. stack backtrace: [<c0025ecc>] (dump_stack+0x0/0x14) from [<c005b1e4>] (print_usage_bug+0x138/0x168) [<c005b0ac>] (print_usage_bug+0x0/0x168) from [<c005be80>] (mark_lock+0x484/0x6a0) [<c005b9fc>] (mark_lock+0x0/0x6a0) from [<c005cc48>] (__lock_acquire+0x3c0/0x10c8) [<c005c888>] (__lock_acquire+0x0/0x10c8) from [<c005d9a8>] (lock_acquire+0x58/0x6c) [<c005d950>] (lock_acquire+0x0/0x6c) from [<c0233068>] (_spin_lock+0x40/0x50) [<c0233028>] (_spin_lock+0x0/0x50) from [<c002be50>] (gic_set_cpu+0x60/0xa0) [<c002bdf0>] (gic_set_cpu+0x0/0xa0) from [<c01b04cc>] (em_route_irq+0x38/0x40) [<c01b0494>] (em_route_irq+0x0/0x40) from [<c01b04ec>] (em_setup+0x18/0xa4) [<c01b04d4>] (em_setup+0x0/0xa4) from [<c001570c>] (oprofile_arch_init+0x24/0xe8) [<c00156e8>] (oprofile_arch_init+0x0/0xe8) from [<c0015640>] (oprofile_init+0x1c/0x64) [<c0015624>] (oprofile_init+0x0/0x64) from [<c0008a20>] (kernel_init+0x154/0x368) [<c00088cc>] (kernel_init+0x0/0x368) from [<c003ef34>] (do_exit+0x0/0x904) oprofile: using arm/mpcore Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 28 4月, 2007 1 次提交
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由 Russell King 提交于
Add support for stacktrace. Use the new stacktrace code with oprofile instead of it's version; there's no point having multiple versions of stacktracing in the kernel. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 02 3月, 2007 1 次提交
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由 Richard Purdie 提交于
Always allow backtrace when using oprofile on ARM, even if a PMU isn't present. Signed-off-by: NRichard Purdie <rpurdie@rpsys.net> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 07 2月, 2007 3 次提交
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由 Russell King 提交于
Add the glue for ARM11 SMP oprofile support, which also supports the performance monitor in the coherency unit. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Add oprofile glue for ARM11 (ARMv6) oprofile support. This connects the ARM11 core profiling support to the oprofile code for uniprocessor configurations. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Add basic support for the ARM11 profiling hardware. This is shared between the ARM11 UP and ARM11 SMP oprofile support code. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 14 11月, 2006 1 次提交
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由 Russell King 提交于
OP_MAX_COUNTER never referenced, and is a reminant of an earlier oprofile implementation. Remove it. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 15 10月, 2006 1 次提交
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由 Russell King 提交于
Some ARM platforms were still broken as a result of the IRQ register passing changes, mostly due to a missing linux/irq.h include. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 07 10月, 2006 1 次提交
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由 Linus Torvalds 提交于
Untested, but this should fix up the bulk of the totally mechanical issues, and should make the actual detail fixing easier. Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 30 9月, 2006 1 次提交
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由 Lennert Buytenhek 提交于
Remove the last trace of iop31x support from the kernel. Signed-off-by: NLennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 25 9月, 2006 2 次提交
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由 Lennert Buytenhek 提交于
Since the iop32x code isn't iop321-specific, and the iop33x code isn't iop331-specfic, do a s/iop321/iop32x/ and s/iop331/iop33x/, and tidy up the code to conform to the coding style guidelines somewhat better. Signed-off-by: NLennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Lennert Buytenhek 提交于
Rename CONFIG_ARCH_IOP321 to CONFIG_ARCH_IOP32X and CONFIG_ARCH_IOP331 to CONFIG_ARCH_IOP33X. Signed-off-by: NLennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 03 7月, 2006 1 次提交
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由 Thomas Gleixner 提交于
The irgflags consolidation did conflict with the ARM to generic IRQ conversion and was not applied for ARM. Fix it up. Use the new IRQF_ constants and remove the SA_INTERRUPT define Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 22 3月, 2006 3 次提交
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由 Russell King 提交于
We need this to be zero initialised. Since this is an array, use kcalloc rather than kzalloc or kmalloc. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
op_arm_sem is being used as a mutex, so convert it to use real mutexes. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 02 2月, 2006 1 次提交
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由 Russ Dill 提交于
Patch from Russ Dill The oprofile init code was broken in commit c6b9da. The new logic will always return -ENODEV. This fixes oprofile_arch_init to return 0 on success, and return the return value of spec->init() if applicable. Signed-off-by: NRuss Dill <Russ.Dill@gmail.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 30 10月, 2005 1 次提交
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由 Hugh Dickins 提交于
check_user_page_readable is a problematic variant of follow_page. It's used only by oprofile's i386 and arm backtrace code, at interrupt time, to establish whether a userspace stackframe is currently readable. This is problematic, because we want to push the page_table_lock down inside follow_page, and later split it; whereas oprofile is doing a spin_trylock on it (in the i386 case, forgotten in the arm case), and needs that to pin perhaps two pages spanned by the stackframe (which might be covered by different locks when we split). I think oprofile is going about this in the wrong way: it doesn't need to know the area is readable (neither i386 nor arm uses read protection of user pages), it doesn't need to pin the memory, it should simply __copy_from_user_inatomic, and see if that succeeds or not. Sorry, but I've not got around to devising the sparse __user annotations for this. Then we can eliminate check_user_page_readable, and return to a single follow_page without the __follow_page variants. Signed-off-by: NHugh Dickins <hugh@veritas.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 28 10月, 2005 2 次提交
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由 Russell King 提交于
There is nothing special about having the init code separate from the common code, so combine the two. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
The common oprofile code assumes the name "PMU" (from Intel's performance management unit). This is misleading when we start adding oprofile support for other machine types which don't use the same terminology. Call it op_arm_* instead of pmu_*. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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