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  1. 29 9月, 2016 3 次提交
  3. 28 9月, 2016 3 次提交
    • W
      perf data: Fix building in 32 bit platform with libbabeltrace · f2c8852e
      由 Wang Nan 提交于 
      On ARM32 building it report following error when we build with
libbabeltrace:

  util/data-convert-bt.c: In function 'add_bpf_output_values':
  util/data-convert-bt.c:440:3: error: format '%lu' expects argument of type 'long unsigned int', but argument 5 has type 'unsigned int' [-Werror=format]
  cc1: all warnings being treated as errors

Fix it by changing %lu to %zu.
Signed-off-by: NWang Nan <wangnan0@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Fixes: 6122d57e ("perf data: Support converting data from bpf_perf_event_output()")
Link: http://lkml.kernel.org/r/1475035126-146587-1-git-send-email-wangnan0@huawei.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      f2c8852e
    • A
      perf tools: Fix MMAP event synthesis broken by MAP_HUGETLB change · 973186ca
      由 Adrian Hunter 提交于 
      Patch "perf record: Mark MAP_HUGETLB when synthesizing mmap events") breaks
MMAP event synthesis.  The executable name comparison will match any name
if the length is zero, resulting in all the user space maps becoming
anonymous.  This is particularly noticeable with system-wide traces.
Example:

	perf record -a sleep 1
	perf script --show-mmap-events

Committer note:

That is not the case when, say, one has a qemu instance and libvirt actually
mounts hugetlbfs. To test this I had to first umount it:

[root@jouet ~]# mount | grep hugetlbfs
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,seclabel)
[root@jouet ~]#

After unmount it the error fixed by this patch manifests itself:

  # perf record -a sleep 1
  # perf script --show-mmap-events | grep PERF_RECORD_MMAP2 | head -5
    systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x557d47ed8000(0x167000) @ 0 fd:00 3146896 7362875424355726126]: r-xp //anon
    systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c488d000(0x4000) @ 0 fd:00 3153214 7362875424355726126]: r-xp //anon
    systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4a92000(0x3d000) @ 0 fd:00 3159276 7362875424355726126]: r-xp //anon
    systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4cd5000(0x15000) @ 0 fd:00 3153725 7362875424355726126]: r-xp //anon
    systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4eeb000(0x25000) @ 0 fd:00 3153260 7362875424355726126]: r-xp //anon
  #

Fixed version:

  # perf record -a sleep 1
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 1.419 MB perf.data (182 samples) ]
  # perf script --show-mmap-events | grep PERF_RECORD_MMAP2 | head -5
    systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x557d47ed8000(0x167000) @ 0 fd:00 3146896 7362875424355726126]: r-xp /usr/lib/systemd/systemd
    systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c488d000(0x4000) @ 0 fd:00 3153214 7362875424355726126]: r-xp /usr/lib64/libuuid.so.1.3.0
    systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4a92000(0x3d000) @ 0 fd:00 3159276 7362875424355726126]: r-xp /usr/lib64/libblkid.so.1.1.0
    systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4cd5000(0x15000) @ 0 fd:00 3153725 7362875424355726126]: r-xp /usr/lib64/libz.so.1.2.8
    systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4eeb000(0x25000) @ 0 fd:00 3153260 7362875424355726126]: r-xp /usr/lib64/liblzma.so.5.2.2
[root@jouet ~]#
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: http://lkml.kernel.org/r/1474641528-18776-3-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      973186ca
    • A
      perf record: Fix documentation 'event_sources' -> 'event_source' · a9e57009
      由 Adrian Hunter 提交于 
      Change '/sys/bus/event_sources' to the correct path which is
'/sys/bus/event_source'.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: http://lkml.kernel.org/r/1474641528-18776-2-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      a9e57009
  5. 23 9月, 2016 11 次提交
  7. 22 9月, 2016 6 次提交
  9. 21 9月, 2016 6 次提交
    • J
      perf hists: Use bigger buffer for stdio headers · d5278220
      由 Jiri Olsa 提交于 
      With node column on big CPUs servers we can run out of stdio header
space quite soon. Enlarging header buffer.
Signed-off-by: NJiri 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/1474290610-23241-5-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      d5278220
    • J
      perf evsel: Remove superfluous initialization of weight · 82deb8a2
      由 Jiri Olsa 提交于 
      Removing superfluous initialization of weight, it's already set to 0 via
memset.
Signed-off-by: NJiri 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/1474290610-23241-3-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      82deb8a2
    • I
      Merge tag 'perf-core-for-mingo-20160920' of... · 89f1c2c5
      由 Ingo Molnar 提交于 
      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: NArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: NIngo Molnar <mingo@kernel.org>
      89f1c2c5
    • J
      perf symbols: Do not open device files · 3c028a0c
      由 Jiri Olsa 提交于 
      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: NJiri 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: NArnaldo Carvalho de Melo <acme@redhat.com>
      3c028a0c
    • N
      perf hists: Factor out hists__reset_column_width() · e3b60bc9
      由 Namhyung Kim 提交于 
      The stdio and tui has same code to reset hpp format column width.
Factor it out as a new function.
Suggested-and-Acked-by: NJiri Olsa <jolsa@redhat.com>
Signed-off-by: NNamhyung 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: NArnaldo Carvalho de Melo <acme@redhat.com>
      e3b60bc9
    • N
      perf ui/tui: Reset output width for hierarchy · 5ff3e7a2
      由 Namhyung Kim 提交于 
      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: NNamhyung Kim <namhyung@kernel.org>
Acked-by: NJiri 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: NArnaldo Carvalho de Melo <acme@redhat.com>
      5ff3e7a2
  11. 20 9月, 2016 6 次提交
    • A
      perf annotate: Resolve 'call' operands to function names · 5f62d4fd
      由 Arnaldo Carvalho de Melo 提交于 
      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: NArnaldo Carvalho de Melo <acme@redhat.com>
      5f62d4fd
    • A
      perf annotate: Pass the symbol's map/dso to the instruction parsers · bff5c306
      由 Arnaldo Carvalho de Melo 提交于 
      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: NArnaldo Carvalho de Melo <acme@redhat.com>
      bff5c306
    • R
      perf annotate: Do not ignore call instruction with indirect target · 88a7fcf9
      由 Ravi Bangoria 提交于 
      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: NMichael Ellerman <mpe@ellerman.id.au>
[Suggested about 'bctrl' instruction]
Signed-off-by: NRavi 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: NArnaldo Carvalho de Melo <acme@redhat.com>
      88a7fcf9
    • J
      perf hists: Fix width computation for srcline sort entry · f666ac0d
      由 Jiri Olsa 提交于 
      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: NJiri 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: NArnaldo Carvalho de Melo <acme@redhat.com>
      f666ac0d
    • S
      perf/x86/intel/bts: Make sure debug store is valid · f1e1c9e5
      由 Sebastian Andrzej Siewior 提交于 
      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: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: NAlexander 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: NThomas Gleixner <tglx@linutronix.de>
      f1e1c9e5
    • A
      perf/x86/intel/pt: Add support for PTWRITE and power event tracing · 8ee83b2a
      由 Alexander Shishkin 提交于 
      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: NAlexander 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: NThomas Gleixner <tglx@linutronix.de>
      8ee83b2a
  13. 19 9月, 2016 5 次提交
    • W
      tools include: Add mman macros needed by perf for all arch · f82b7746
      由 Wang Nan 提交于 
      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: NWang Nan <wangnan0@huawei.com>
Tested-by: NKim Phillips <kim.phillips@arm.com>
Tested-by: NNaveen 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: NArnaldo Carvalho de Melo <acme@redhat.com>
      f82b7746
    • W
      perf trace beauty mmap: Add missing MADV_FREE · f752e90e
      由 Wang Nan 提交于 
      tools/perf/trace/beauty/mmap.c forgets to check MADV_FREE.
This patch fixes it.
Signed-off-by: NWang 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: NArnaldo Carvalho de Melo <acme@redhat.com>
      f752e90e
    • L
      Linux 4.8-rc7 · 3be79886
      由 Linus Torvalds 提交于
      3be79886
    • L
      Merge tag 'usb-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · b01cf676
      由 Linus Torvalds 提交于 
      Pull USB fixes from Greg KH:
 "Here are two small fixes, and one new device id, for 4.8-rc7

  The fixes solve a build error that was reported in your tree for the
  blackfin arch, and resolve an issue with a number of broken USB
  devices that reported the wrong interval rate.  Included here is also
  a new device id for the usb-serial driver.

  All have been in linux-next with no reported issues"

* tag 'usb-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: change bInterval default to 10 ms
  usb: musb: Fix tusb6010 compile error on blackfin
  USB: serial: simple: add support for another Infineon flashloader
      b01cf676
    • L
      Merge tag 'fixes-for-linus-v4.8-rc7' of... · 88b4ad28
      由 Linus Torvalds 提交于 
      Merge tag 'fixes-for-linus-v4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull uaccess fixes from Guenter Roeck:
 "Two patches fixing problems introduced with copy_from_user changes"

* tag 'fixes-for-linus-v4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  openrisc: fix the fix of copy_from_user()
  avr32: fix 'undefined reference to `___copy_from_user'
      88b4ad28