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  1. 27 Sep, 2016 1 commit
  3. 23 Sep, 2016 2 commits
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  7. 21 Sep, 2016 2 commits
  9. 20 Sep, 2016 9 commits
    • Ingo Molnar's avatar
      Merge tag 'perf-core-for-mingo-20160920' of... · 89f1c2c5
      Ingo Molnar authored 
      Merge tag 'perf-core-for-mingo-20160920' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

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

User visible changes:

- Support event group view with hierarchy mode in 'perf top' and 'perf report'
  (Namhyung Kim)

  e.g.:

  $ perf record -e '{cycles,instructions}' make
  $ perf report --hierarchy --stdio
  ...
  #               Overhead  Command / Shared Object / Symbol
  # ......................  ..................................
  ...
      25.74%  27.18%        sh
         19.96%  24.14%        libc-2.24.so
            9.55%  14.64%        [.] __strcmp_sse2
            1.54%   0.00%        [.] __tfind
            1.07%   1.13%        [.] _int_malloc
            0.95%   0.00%        [.] __strchr_sse2
            0.89%   1.39%        [.] __tsearch
            0.76%   0.00%        [.] strlen

- Fix the dwarf regs table for x86_64, adding a missing % to the "%di"
  register, noticed with a failing 'perf test bpf' (Arnaldo Carvalho de Melo)

- Fix handling of mmap parameters in the 'perf trace' beautifier in
  architectures that don't have the same mappings as x86_64 (Wang Nan)

- Handle hugetbl mappings in older systems running new kernels (Wang Nan)

- Resolve 'call' operands in 'annotate', that when using /proc/kcore
  were appearing just as hexadecimal addresses, to function names
  (Arnaldo Carvalho de Melo)

- Fix width computation for srcline sort entry (Jiri Olsa)

- Do not ignore call instruction with indirect target in 'annotate'
  (Ravi Bangoria)

- Handle MADV_FREE in the madvise 'trace' beautifier (Wang Nan)

- Fix build of 'perf trace' mman beautifier in !x86_64 (Wang Nan)

Infrastructure changes:

- Add infrastructure for PMU specific configuration, allowing to pass
  config variables directly to the kernel PMU driver, prefixing those
  variables with a '@', part of a larger series to support Coresight (Mathieu Poirier)
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      89f1c2c5
    • Jiri Olsa's avatar
      perf symbols: Do not open device files · 3c028a0c
      Jiri Olsa authored 
      The dso__read_binary_type_filename gets the dso's file name to open. We
need to check it for regular file before trying to open it, otherwise we
might get stuck with device file.
Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20160920161245.GA8995@kravaSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      3c028a0c
    • Namhyung Kim's avatar
      perf hists: Factor out hists__reset_column_width() · e3b60bc9
      Namhyung Kim authored 
      The stdio and tui has same code to reset hpp format column width.
Factor it out as a new function.
Suggested-and-Acked-by: default avatarJiri Olsa <jolsa@redhat.com>
Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20160920053025.13989-2-namhyung@kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      e3b60bc9
    • Namhyung Kim's avatar
      perf ui/tui: Reset output width for hierarchy · 5ff3e7a2
      Namhyung Kim authored 
      When --hierarchy option is used, each entry has its own hpp_list to show
the result.  But it missed to update width of each column.

Before:

  - 46.29% 48.12%        netctl-auto
     + 31.44% 29.25%        [kernel.vmlinux]
     + 8.52% 11.55%        libc-2.22.so
     + 5.19% 6.91%        bash
  + 10.75% 11.83%        wpa_cli
  + 8.25% 2.23%        swapper
  + 6.45% 5.40%        tr
  + 4.81% 8.09%        awk
  + 4.15% 2.85%        firefox
  + 3.86% 2.53%        sh

After:

  -  46.29%  48.12%        netctl-auto
      +  31.44%  29.25%        [kernel.vmlinux]
      +   8.52%  11.55%        libc-2.22.so
      +   5.19%   6.91%        bash
  +  10.75%  11.83%        wpa_cli
  +   8.25%   2.23%        swapper
  +   6.45%   5.40%        tr
  +   4.81%   8.09%        awk
  +   4.15%   2.85%        firefox
  +   3.86%   2.53%        sh

Committer note:

Full testing instructions:

1) Record with an event group:

  $ perf record -e '{cycles,instructions}' make -j4

2) Use report in hierarchy mode, to get a few expanded trees on
   the same screen, use --percent-limit:

  $ perf report --hierarchy --percent-limit 0.5

Samples: 103K of event 'anon group { cycles:u, instructions:u }',
Event count (approx.): 57317631725
         Overhead        Command / Shared Object / Symbol        ◆
-  58.89%  55.12%        cc1                                     ▒
   -  50.26%  48.10%        cc1                                  ▒
          3.61%   5.13%        [.] _cpp_lex_token                ▒
          2.58%   0.78%        [.] ht_lookup_with_hash           ▒
          1.31%   1.30%        [.] ggc_internal_alloc            ▒
          1.08%   2.25%        [.] get_combined_adhoc_loc        ▒
          1.01%   1.95%        [.] ira_init                      ▒
          0.96%   1.78%        [.] linemap_position_for_column   ▒
          0.65%   1.01%        [.] cpp_get_token_with_location   ▒
   -   7.52%   6.58%        libc-2.23.so                         ▒
          1.70%   1.78%        [.] _int_malloc                   ▒
          0.69%   0.75%        [.] _int_free                     ▒
          0.67%   0.42%        [.] malloc_consolidate            ▒
   -   0.58%   0.42%        ld-2.23.so                           ▒
                               no entry >= 0.50%                 ▒
   -   0.52%   0.03%        [kernel.vmlinux]                     ▒
                               no entry >= 0.50%                 ▒
Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: 1b2dbbf4 ("perf hists: Use own hpp_list for hierarchy mode")
Link: http://lkml.kernel.org/r/20160920053025.13989-1-namhyung@kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      5ff3e7a2
    • Arnaldo Carvalho de Melo's avatar
      perf annotate: Resolve 'call' operands to function names · 5f62d4fd
      Arnaldo Carvalho de Melo authored 
      Before this patch the '_raw_spin_lock_irqsave' and 'update_rq_clock' operands
were appearing just as hexadecimal numbers:

  update_blocked_averages  /proc/kcore
       │       push   %r12
       │       push   %rbx
       │       and    $0xfffffffffffffff0,%rsp
       │       sub    $0x40,%rsp
       │       add    -0x662cac00(,%rdi,8),%rax
       │       mov    %rax,%rbx
       │       mov    %rax,%rdi
       │       mov    %rax,0x38(%rsp)
       │     → callq  _raw_spin_lock_irqsave
       │       mov    %rbx,%rdi
       │       mov    %rax,0x30(%rsp)
       │     → callq  update_rq_clock
       │       mov    0x8d0(%rbx),%rax
       │       lea    0x8d0(%rbx),%r11

To check that all is right one can always use the 'o' hotkey and see
the original objdump -dS output, that for this case is:

  update_blocked_averages  /proc/kcore
       │ffffffff990d5489:   push   %r12
       │ffffffff990d548b:   push   %rbx
       │ffffffff990d548c:   and    $0xfffffffffffffff0,%rsp
       │ffffffff990d5490:   sub    $0x40,%rsp
       │ffffffff990d5494:   add    -0x662cac00(,%rdi,8),%rax
       │ffffffff990d549c:   mov    %rax,%rbx
       │ffffffff990d549f:   mov    %rax,%rdi
       │ffffffff990d54a2:   mov    %rax,0x38(%rsp)
       │ffffffff990d54a7: → callq  0xffffffff997eb7a0
       │ffffffff990d54ac:   mov    %rbx,%rdi
       │ffffffff990d54af:   mov    %rax,0x30(%rsp)
       │ffffffff990d54b4: → callq  0xffffffff990c7720
       │ffffffff990d54b9:   mov    0x8d0(%rbx),%rax
       │ffffffff990d54c0:   lea    0x8d0(%rbx),%r11

Use the 'h' hotkey to see a list of available hotkeys.

More work needed to cover operands for other instructions, such as 'mov',
that can resolve variable names, etc.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Chris Riyder <chris.ryder@arm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Taeung Song <treeze.taeung@gmail.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-xqgtw9mzmzcjgwkis9kiiv1p@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      5f62d4fd
    • Arnaldo Carvalho de Melo's avatar
      perf annotate: Pass the symbol's map/dso to the instruction parsers · bff5c306
      Arnaldo Carvalho de Melo authored 
      So that things like:

       → callq  0xffffffff993e3230

found while disassembling /proc/kcore can be beautified by later
patches, that will resolve that address to a function, looking it up in
/proc/kallsyms.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Chris Riyder <chris.ryder@arm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Taeung Song <treeze.taeung@gmail.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-p76myuke4j7gplg54amaklxk@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      bff5c306
    • Ravi Bangoria's avatar
      perf annotate: Do not ignore call instruction with indirect target · 88a7fcf9
      Ravi Bangoria authored 
      Do not ignore call instruction with indirect target when its already
identified as a call. This is an extension of commit e8ea1561 ("perf
annotate: Use raw form for register indirect call instructions") to
generalize annotation for all instructions with indirect calls.

This is needed for certain powerpc call instructions that use address in
a register (such as bctrl, btarl, ...).

Apart from that, when kcore is used to disassemble function, all call
instructions were ignored. This patch will fix it as a side effect by
not ignoring them. For example,

Before (with kcore):
       mov    %r13,%rdi
       callq  0xffffffff811a7e70
     ^ jmpq   64
       mov    %gs:0x7ef41a6e(%rip),%al

After (with kcore):
       mov    %r13,%rdi
     > callq  0xffffffff811a7e70
     ^ jmpq   64
       mov    %gs:0x7ef41a6e(%rip),%al
Suggested-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
[Suggested about 'bctrl' instruction]
Signed-off-by: default avatarRavi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Chris Riyder <chris.ryder@arm.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Taeung Song <treeze.taeung@gmail.com>
Link: http://lkml.kernel.org/r/1471611578-11255-5-git-send-email-ravi.bangoria@linux.vnet.ibm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      88a7fcf9
    • Jiri Olsa's avatar
      perf hists: Fix width computation for srcline sort entry · f666ac0d
      Jiri Olsa authored 
      Adding header size to width computation for srcline sort entry,
because it's possible to get empty data with ':0' which set width
of 2 which is lower than width needed to display column header.
Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1474290610-23241-62-git-send-email-jolsa@kernel.org
[ Added declaration to sort.h ]
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      f666ac0d
    • Sebastian Andrzej Siewior's avatar
      perf/x86/intel/bts: Make sure debug store is valid · f1e1c9e5
      Sebastian Andrzej Siewior authored 
      Since commit 4d4c4741 ("perf/x86/intel/bts: Fix BTS PMI detection")
my box goes boom on boot:

| .... node  #0, CPUs:      #1 #2 #3 #4 #5 #6 #7
| BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
| IP: [<ffffffff8100c463>] intel_bts_interrupt+0x43/0x130
| Call Trace:
|  <NMI> d [<ffffffff8100b341>] intel_pmu_handle_irq+0x51/0x4b0
|  [<ffffffff81004d47>] perf_event_nmi_handler+0x27/0x40

This happens because the code introduced in this commit dereferences the
debug store pointer unconditionally. The debug store is not guaranteed to
be available, so a NULL pointer check as on other places is required.

Fixes: 4d4c4741 ("perf/x86/intel/bts: Fix BTS PMI detection")
Signed-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: default avatarAlexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: vince@deater.net
Cc: eranian@google.com
Link: http://lkml.kernel.org/r/20160920131220.xg5pbdjtznszuyzb@breakpoint.ccSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      f1e1c9e5
  11. 19 Sep, 2016 4 commits
    • Alexander Shishkin's avatar
      perf/x86/intel/pt: Add support for PTWRITE and power event tracing · 8ee83b2a
      Alexander Shishkin authored 
      The Intel PT facility grew some new functionality:

  * PTWRITE packet carries the payload of the new PTWRITE instruction
    that can be used to instrument Intel PT traces with user-supplied
    data. Packets of this type are only generated if 'ptwrite' capability
    is set and PTWEn bit is set in the event attribute's config. Flow
    update packets (FUP) can be generated on PTWRITE packets if FUPonPTW
    config bit is set. Setting these bits is not allowed if 'ptwrite'
    capability is not set.

  * PWRE, PWRX, MWAIT, EXSTOP packets communicate core power management
    events. These depend on 'power_event_tracing' capability and are
    enabled by setting PwrEvtEn bit in the event attribute.

Extend the driver capabilities and provide the proper sanity checks in the
event validation function.

[ tglx: Massaged changelog ]
Signed-off-by: default avatarAlexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: vince@deater.net
Cc: eranian@google.com
Cc: Adrian Hunter <adrian.hunter@intel.com>
Link: http://lkml.kernel.org/r/20160916134819.1978-1-alexander.shishkin@linux.intel.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      8ee83b2a
    • Wang Nan's avatar
      tools include: Add mman macros needed by perf for all arch · f82b7746
      Wang Nan authored 
      Some macros required by tools/perf/trace/beauty/mmap.c is not support
for all architectures. For example, MAP_32BIT is defined on x86 only,
alpha doesn't define MADV_HWPOISON and MADV_SOFT_OFFLINE.

This patch regenerates mman.h for each arch, defines these missing
macros for perf. For missing MADV_*, fall back to asm-generic/mman-common
because they are in a 'case ...' statement. For flags, define it to 0.

Following is the script to generate this patch:

 macros=`cat $0 | awk 'V==1 {print}; /^# start macro list/ {V=1}'`
 rm `find ./tools/arch/ -name mman.h`
 for arch in `ls tools/arch`
 do
   [ -d tools/arch/$arch/include/uapi/asm ] || mkdir -p tools/arch/$arch/include/uapi/asm
   src=arch/$arch/include/uapi/asm/mman.h
   target=tools/arch/$arch/include/uapi/asm/mman.h.tmp
   real_target=tools/arch/$arch/include/uapi/asm/mman.h
   guard="TOOLS_ARCH_"`echo $arch | awk '{print toupper($0)}'`_UAPI_ASM_MMAN_FIX_H
   rm -f $target

   [ -f $src ] &&
   for m in $macros
   do
     if grep '#define[ \t]*'$m $src > /dev/null 2>&1
     then
       grep -h '#define[ \t]*'$m $src | sed 's/[ \t]*\/\*.*$//g' >> $target
     fi
   done

   if [ -f $src ]
   then
      grep '#include <asm-generic' $src >> $target
   else
      echo "#include <asm-generic/mman.h>" >> $target
   fi

   touch $real_target
   for m in $macros
   do
     if cat << EOF | gcc -Itools/arch/$arch/include -Itools/arch/$arch/include/uapi -Iinclude/ -Iinclude/uapi -E - | grep $m > /dev/null 2>&1
 #include <uapi/asm/mman.h.tmp>
 #include <uapi/linux/mman.h>
 $m
 EOF
   then
     echo "Fixing $m for $arch"
     echo "/* $m is undefined on $arch, fix it for perf */" >> $target
     if echo $m | grep '^MADV_' > /dev/null 2>&1
     then
       grep -h '#define[ \t]*'$m include/uapi/asm-generic/mman-common.h | sed 's/[ \t]*\/\*.*$//g' >> $target
     else
       echo "#define $m	0" >> $target
     fi
   fi
   done

   real_target=tools/arch/$arch/include/uapi/asm/mman.h
   echo '#ifndef '$guard > $real_target
   echo '#define '$guard >> $real_target
   cat $target | sed 's|asm-generic|uapi/asm-generic|g' >> $real_target
   echo '#endif' >> $real_target
   rm $target
   echo "$real_target"
 done

 exit 0
 # Following macros are extracted from:
 # tools/perf/trace/beauty/mmap.c
 #
 # start macro list
 MADV_DODUMP
 MADV_DOFORK
 MADV_DONTDUMP
 MADV_DONTFORK
 MADV_DONTNEED
 MADV_FREE
 MADV_HUGEPAGE
 MADV_HWPOISON
 MADV_MERGEABLE
 MADV_NOHUGEPAGE
 MADV_NORMAL
 MADV_RANDOM
 MADV_REMOVE
 MADV_SEQUENTIAL
 MADV_SOFT_OFFLINE
 MADV_UNMERGEABLE
 MADV_WILLNEED
 MAP_32BIT
 MAP_ANONYMOUS
 MAP_DENYWRITE
 MAP_EXECUTABLE
 MAP_FILE
 MAP_FIXED
 MAP_GROWSDOWN
 MAP_HUGETLB
 MAP_LOCKED
 MAP_NONBLOCK
 MAP_NORESERVE
 MAP_POPULATE
 MAP_PRIVATE
 MAP_SHARED
 MAP_STACK
 MAP_UNINITIALIZED
 MREMAP_FIXED
 MREMAP_MAYMOVE
 PROT_EXEC
 PROT_GROWSDOWN
 PROT_GROWSUP
 PROT_NONE
 PROT_READ
 PROT_SEM
 PROT_WRITE
Signed-off-by: default avatarWang Nan <wangnan0@huawei.com>
Tested-by: default avatarKim Phillips <kim.phillips@arm.com>
Tested-by: default avatarNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Fixes: 277cf08f ("perf trace beauty mmap: Fix defines for non !x86_64")
Link: http://lkml.kernel.org/r/1473850649-83389-3-git-send-email-wangnan0@huawei.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      f82b7746
    • Wang Nan's avatar
      perf trace beauty mmap: Add missing MADV_FREE · f752e90e
      Wang Nan authored 
      tools/perf/trace/beauty/mmap.c forgets to check MADV_FREE.
This patch fixes it.
Signed-off-by: default avatarWang Nan <wangnan0@huawei.com>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1473850649-83389-2-git-send-email-wangnan0@huawei.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      f752e90e
    • Linus Torvalds's avatar
      Linux 4.8-rc7 · 3be79886
      Linus Torvalds authored
      3be79886
  13. 18 Sep, 2016 7 commits
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