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  1. 31 8月, 2018 1 次提交
    • M
      perf annotate: Properly interpret indirect call · 1dc27f63
      由 Martin Liška 提交于 
      The patch changes the parsing of:

	callq  *0x8(%rbx)

from:

  0.26 │     → callq  *8

to:

  0.26 │     → callq  *0x8(%rbx)

in this case an address is followed by a register, thus one can't parse
only the address.

Committer testing:

1) run 'perf record sleep 10'
2) before applying the patch, run:

     perf annotate --stdio2 > /tmp/before

3) after applying the patch, run:

     perf annotate --stdio2 > /tmp/after

4) diff /tmp/before /tmp/after:
  --- /tmp/before 2018-08-28 11:16:03.238384143 -0300
  +++ /tmp/after  2018-08-28 11:15:39.335341042 -0300
  @@ -13274,7 +13274,7 @@
                ↓ jle    128
                  hash_value = hash_table->hash_func (key);
                  mov    0x8(%rsp),%rdi
  -  0.91       → callq  *30
  +  0.91       → callq  *0x30(%r12)
                  mov    $0x2,%r8d
                  cmp    $0x2,%eax
                  node_hash = hash_table->hashes[node_index];
  @@ -13848,7 +13848,7 @@
                   mov    %r14,%rdi
                   sub    %rbx,%r13
                   mov    %r13,%rdx
  -              → callq  *38
  +              → callq  *0x38(%r15)
                   cmp    %rax,%r13
     1.91        ↓ je     240
            1b4:   mov    $0xffffffff,%r13d
  @@ -14026,7 +14026,7 @@
                   mov    %rcx,-0x500(%rbp)
                   mov    %r15,%rsi
                   mov    %r14,%rdi
  -              → callq  *38
  +              → callq  *0x38(%rax)
                   mov    -0x500(%rbp),%rcx
                   cmp    %rax,%rcx
                 ↓ jne    9b0
<SNIP tons of other such cases>
Signed-off-by: NMartin Liška <mliska@suse.cz>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: NKim Phillips <kim.phillips@arm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/bd1f3932-be2b-85f9-7582-111ee0a43b07@suse.czSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      1dc27f63
  3. 23 8月, 2018 1 次提交
    • I
      Merge tag 'perf-core-for-mingo-4.19-20180820' of... · 66e5db4a
      由 Ingo Molnar 提交于 
      Merge tag 'perf-core-for-mingo-4.19-20180820' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

LLVM/clang/eBPF: (Arnaldo Carvalho de Melo)

 - Allow passing options to llc in addition to to clang.

Hardware tracing: (Jack Henschel)

 - Improve error message for PMU address filters, clarifying availability of
   that feature in hardware having hardware tracing such as Intel PT.

Python interface: (Jiri Olsa)

 - Fix read_on_cpu() interface.

ELF/DWARF libraries: (Jiri Olsa)

 - Fix handling of the combo compressed module file + decompressed associated
   debuginfo file.

Build (Rasmus Villemoes)

 - Disable parallelism for 'make clean', avoiding multiple submakes deleting
   the same files and causing the build to fail on systems such as Yocto.

Kernel ABI copies: (Arnaldo Carvalho de Melo)

 - Update tools's copy of x86's cpufeatures.h.

 - Update arch/x86/lib/memcpy_64.S copy used in 'perf bench mem memcpy'.

Miscellaneous: (Steven Rostedt)

 - Change libtraceevent to SPDX License format.
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: NIngo Molnar <mingo@kernel.org>
      66e5db4a
  5. 20 8月, 2018 21 次提交
  7. 18 8月, 2018 1 次提交
    • I
      Merge tag 'perf-core-for-mingo-4.19-20180815' of... · 5804b110
      由 Ingo Molnar 提交于 
      Merge tag 'perf-core-for-mingo-4.19-20180815' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

kernel:

- kallsyms, x86: Export addresses of PTI entry trampolines (Alexander Shishkin)

- kallsyms: Simplify update_iter_mod() (Adrian Hunter)

- x86: Add entry trampolines to kcore (Adrian Hunter)

Hardware tracing:

- Fix auxtrace queue resize (Adrian Hunter)

Arch specific:

- Fix uninitialized ARM SPE record error variable (Kim Phillips)

- Fix trace event post-processing in powerpc (Sandipan Das)

Build:

- Fix check-headers.sh AND list path of execution (Alexander Kapshuk)

- Remove -mcet and -fcf-protection when building the python binding
  with older clang versions (Arnaldo Carvalho de Melo)

- Make check-headers.sh check based on kernel dir (Jiri Olsa)

- Move syscall_64.tbl check into check-headers.sh (Jiri Olsa)

Infrastructure:

- Check for null when copying nsinfo.  (Benno Evers)

Libraries:

- Rename libtraceevent prefixes, prep work for making it a shared
  library generaly available (Tzvetomir Stoyanov (VMware))
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      5804b110
  9. 15 8月, 2018 8 次提交
  11. 14 8月, 2018 8 次提交
    • L
      Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 13e091b6
      由 Linus Torvalds 提交于 
      Pull x86 timer updates from Thomas Gleixner:
 "Early TSC based time stamping to allow better boot time analysis.

  This comes with a general cleanup of the TSC calibration code which
  grew warts and duct taping over the years and removes 250 lines of
  code. Initiated and mostly implemented by Pavel with help from various
  folks"

* 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits)
  x86/kvmclock: Mark kvm_get_preset_lpj() as __init
  x86/tsc: Consolidate init code
  sched/clock: Disable interrupts when calling generic_sched_clock_init()
  timekeeping: Prevent false warning when persistent clock is not available
  sched/clock: Close a hole in sched_clock_init()
  x86/tsc: Make use of tsc_calibrate_cpu_early()
  x86/tsc: Split native_calibrate_cpu() into early and late parts
  sched/clock: Use static key for sched_clock_running
  sched/clock: Enable sched clock early
  sched/clock: Move sched clock initialization and merge with generic clock
  x86/tsc: Use TSC as sched clock early
  x86/tsc: Initialize cyc2ns when tsc frequency is determined
  x86/tsc: Calibrate tsc only once
  ARM/time: Remove read_boot_clock64()
  s390/time: Remove read_boot_clock64()
  timekeeping: Default boot time offset to local_clock()
  timekeeping: Replace read_boot_clock64() with read_persistent_wall_and_boot_offset()
  s390/time: Add read_persistent_wall_and_boot_offset()
  x86/xen/time: Output xen sched_clock time from 0
  x86/xen/time: Initialize pv xen time in init_hypervisor_platform()
  ...
      13e091b6
    • L
      Merge branch 'x86/pti' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · eac34119
      由 Linus Torvalds 提交于 
      Pull x86 PTI updates from Thomas Gleixner:
 "The Speck brigade sadly provides yet another large set of patches
  destroying the perfomance which we carefully built and preserved

   - PTI support for 32bit PAE. The missing counter part to the 64bit
     PTI code implemented by Joerg.

   - A set of fixes for the Global Bit mechanics for non PCID CPUs which
     were setting the Global Bit too widely and therefore possibly
     exposing interesting memory needlessly.

   - Protection against userspace-userspace SpectreRSB

   - Support for the upcoming Enhanced IBRS mode, which is preferred
     over IBRS. Unfortunately we dont know the performance impact of
     this, but it's expected to be less horrible than the IBRS
     hammering.

   - Cleanups and simplifications"

* 'x86/pti' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (60 commits)
  x86/mm/pti: Move user W+X check into pti_finalize()
  x86/relocs: Add __end_rodata_aligned to S_REL
  x86/mm/pti: Clone kernel-image on PTE level for 32 bit
  x86/mm/pti: Don't clear permissions in pti_clone_pmd()
  x86/mm/pti: Fix 32 bit PCID check
  x86/mm/init: Remove freed kernel image areas from alias mapping
  x86/mm/init: Add helper for freeing kernel image pages
  x86/mm/init: Pass unconverted symbol addresses to free_init_pages()
  mm: Allow non-direct-map arguments to free_reserved_area()
  x86/mm/pti: Clear Global bit more aggressively
  x86/speculation: Support Enhanced IBRS on future CPUs
  x86/speculation: Protect against userspace-userspace spectreRSB
  x86/kexec: Allocate 8k PGDs for PTI
  Revert "perf/core: Make sure the ring-buffer is mapped in all page-tables"
  x86/mm: Remove in_nmi() warning from vmalloc_fault()
  x86/entry/32: Check for VM86 mode in slow-path check
  perf/core: Make sure the ring-buffer is mapped in all page-tables
  x86/pti: Check the return value of pti_user_pagetable_walk_pmd()
  x86/pti: Check the return value of pti_user_pagetable_walk_p4d()
  x86/entry/32: Add debug code to check entry/exit CR3
  ...
      eac34119
    • L
      Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · d191c82d
      由 Linus Torvalds 提交于 
      Pull x86 vdso update from Thomas Gleixner:
 "Use LD to link the VDSO libs instead of indirecting trough CC which
  causes build failures with Clang"

* 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: vdso: Use $LD instead of $CC to link
      d191c82d
    • L
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 4d5ac4b8
      由 Linus Torvalds 提交于 
      Pull misc x86 fixes from Thomas Gleixner:
 "Two fixes for x86:

   - Provide a declaration for native_save_fl() which unbreaks the
     wreckage caused by making it 'extern inline'.

   - Fix the failing paravirt patching which is supposed to replace
     indirect with direct calls. The wreckage is caused by an incorrect
     clobber test"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/paravirt: Fix spectre-v2 mitigations for paravirt guests
  x86/irqflags: Provide a declaration for native_save_fl
      4d5ac4b8
    • L
      Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 203b4fc9
      由 Linus Torvalds 提交于 
      Pull x86 mm updates from Thomas Gleixner:

 - Make lazy TLB mode even lazier to avoid pointless switch_mm()
   operations, which reduces CPU load by 1-2% for memcache workloads

 - Small cleanups and improvements all over the place

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Remove redundant check for kmem_cache_create()
  arm/asm/tlb.h: Fix build error implicit func declaration
  x86/mm/tlb: Make clear_asid_other() static
  x86/mm/tlb: Skip atomic operations for 'init_mm' in switch_mm_irqs_off()
  x86/mm/tlb: Always use lazy TLB mode
  x86/mm/tlb: Only send page table free TLB flush to lazy TLB CPUs
  x86/mm/tlb: Make lazy TLB mode lazier
  x86/mm/tlb: Restructure switch_mm_irqs_off()
  x86/mm/tlb: Leave lazy TLB mode at page table free time
  mm: Allocate the mm_cpumask (mm->cpu_bitmap[]) dynamically based on nr_cpu_ids
  x86/mm: Add TLB purge to free pmd/pte page interfaces
  ioremap: Update pgtable free interfaces with addr
  x86/mm: Disable ioremap free page handling on x86-PAE
      203b4fc9
    • L
      Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 7edcf0d3
      由 Linus Torvalds 提交于 
      Pull x86 platform updates from Thomas Gleixner:
 "Trivial cleanups and improvements"

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/platform/UV: Remove redundant check of p == q
  x86/platform/olpc: Use PTR_ERR_OR_ZERO()
  x86/platform/UV: Mark memblock related init code and data correctly
      7edcf0d3
    • L
      Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 30de24c7
      由 Linus Torvalds 提交于 
      Pull x86 cache QoS (RDT/CAR) updates from Thomas Gleixner:
 "Add support for pseudo-locked cache regions.

  Cache Allocation Technology (CAT) allows on certain CPUs to isolate a
  region of cache and 'lock' it. Cache pseudo-locking builds on the fact
  that a CPU can still read and write data pre-allocated outside its
  current allocated area on cache hit. With cache pseudo-locking data
  can be preloaded into a reserved portion of cache that no application
  can fill, and from that point on will only serve cache hits. The cache
  pseudo-locked memory is made accessible to user space where an
  application can map it into its virtual address space and thus have a
  region of memory with reduced average read latency.

  The locking is not perfect and gets totally screwed by WBINDV and
  similar mechanisms, but it provides a reasonable enhancement for
  certain types of latency sensitive applications.

  The implementation extends the current CAT mechanism and provides a
  generally useful exclusive CAT mode on which it builds the extra
  pseude-locked regions"

* 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (45 commits)
  x86/intel_rdt: Disable PMU access
  x86/intel_rdt: Fix possible circular lock dependency
  x86/intel_rdt: Make CPU information accessible for pseudo-locked regions
  x86/intel_rdt: Support restoration of subset of permissions
  x86/intel_rdt: Fix cleanup of plr structure on error
  x86/intel_rdt: Move pseudo_lock_region_clear()
  x86/intel_rdt: Limit C-states dynamically when pseudo-locking active
  x86/intel_rdt: Support L3 cache performance event of Broadwell
  x86/intel_rdt: More precise L2 hit/miss measurements
  x86/intel_rdt: Create character device exposing pseudo-locked region
  x86/intel_rdt: Create debugfs files for pseudo-locking testing
  x86/intel_rdt: Create resctrl debug area
  x86/intel_rdt: Ensure RDT cleanup on exit
  x86/intel_rdt: Resctrl files reflect pseudo-locked information
  x86/intel_rdt: Support creation/removal of pseudo-locked region
  x86/intel_rdt: Pseudo-lock region creation/removal core
  x86/intel_rdt: Discover supported platforms via prefetch disable bits
  x86/intel_rdt: Add utilities to test pseudo-locked region possibility
  x86/intel_rdt: Split resource group removal in two
  x86/intel_rdt: Enable entering of pseudo-locksetup mode
  ...
      30de24c7
    • L
      Merge branch 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · f4990264
      由 Linus Torvalds 提交于 
      Pull x86/hyper-v update from Thomas Gleixner:
 "Add fast hypercall support for guest running on the Microsoft HyperV(isor)"

* 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/hyper-v: Fix wrong merge conflict resolution
  x86/hyper-v: Check for VP_INVAL in hyperv_flush_tlb_others()
  x86/hyper-v: Check cpumask_to_vpset() return value in hyperv_flush_tlb_others_ex()
  x86/hyper-v: Trace PV IPI send
  x86/hyper-v: Use cheaper HVCALL_SEND_IPI hypercall when possible
  x86/hyper-v: Use 'fast' hypercall for HVCALL_SEND_IPI
  x86/hyper-v: Implement hv_do_fast_hypercall16
  x86/hyper-v: Use cheaper HVCALL_FLUSH_VIRTUAL_ADDRESS_{LIST,SPACE} hypercalls when possible
      f4990264