1. 07 2月, 2015 1 次提交
  2. 23 1月, 2015 1 次提交
  3. 22 1月, 2015 4 次提交
  4. 17 12月, 2014 1 次提交
  5. 12 12月, 2014 1 次提交
    • A
      perf trace: Provide a better explanation when mmap fails · e09b18d4
      Arnaldo Carvalho de Melo 提交于
      If we ask for a mmap lenght than the max configured via the relevant
      sysctl, provide a better warning, instead of just expanding the EPERM
      returned:
      
      [acme@ssdandy ~]$ trace -m 256 -e nanosleep sleep 2
      Error:	Operation not permitted.
      Hint:	Check /proc/sys/kernel/perf_event_mlock_kb (516 kB) setting.
      Hint:	Tried using 1028 kB.
      Hint:	Try using a bigger -m/--mmap-pages value.
      
      [acme@ssdandy ~]$ trace -m 128 -e nanosleep sleep 2
        2001.280 (2000.403 ms): nanosleep(rqtp: 0x7fff89a8a7f0) = 0
      [acme@ssdandy ~]$
      
      An upcoming patch will autotune the request for non-root users when -m
      is not used.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-cdvxfz2gycetbkopm9sna1qp@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      e09b18d4
  6. 29 10月, 2014 1 次提交
  7. 16 10月, 2014 1 次提交
  8. 30 9月, 2014 1 次提交
    • C
      perf trace: Fix mmap return address truncation to 32-bit · 2c82c3ad
      Chang Hyun Park 提交于
      Using 'perf trace' for mmap is truncating return values by stripping the
      top 32 bits, actually printing only the lower 32 bits.
      
      This was because the ret value was of an 'int' type and not a 'long'
      type.
      
        The Problem:
      
        991258501.244 ( 0.004 ms): mmap(len: 40001536, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1) = 0x56691000
        991258501.257 ( 0.000 ms): minfault [_int_malloc+0x1038] => //anon@0x7fa056691008 //(d.)
      
      The first line shows an mmap, which succeeds and returns 0x56691000.
      
      However the next line shows a memory access to that virtual memory area,
      specifically to 0x7fa056691008. The upper 32 bit is lost due to the
      problem mentioned above, and thus mmap's return value didn't have the
      upper 0x7fa0.
      
      Tested on 3.17-rc5 from the linus's tree, and the HEAD of tip/master
      Signed-off-by: NChang Hyun Park <heartinpiece@gmail.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Link: http://lkml.kernel.org/r/1411736041-8017-1-git-send-email-heartinpiece@gmail.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      2c82c3ad
  9. 26 9月, 2014 3 次提交
  10. 16 8月, 2014 1 次提交
  11. 14 8月, 2014 3 次提交
    • N
      perf tools: Check recorded kernel version when finding vmlinux · 0a7e6d1b
      Namhyung Kim 提交于
      Currently vmlinux_path__init() only tries to find vmlinux file from
      current directory, /boot and some canonical directories with version
      number of the running kernel.  This can be a problem when reporting old
      data recorded on a kernel version not running currently.
      
      We can use --symfs option for this but it's annoying for user to do it
      always.  As we already have the info in the perf.data file, it can be
      changed to use it for the search automatically.
      
      Before:
      
        $ perf report
        ...
        # Samples: 4K of event 'cpu-clock'
        # Event count (approx.): 1067250000
        #
        # Overhead  Command     Shared Object      Symbol
        # ........  ..........  .................  ..............................
            71.87%     swapper  [kernel.kallsyms]  [k] recover_probed_instruction
      
      After:
      
        # Overhead  Command     Shared Object      Symbol
        # ........  ..........  .................  ....................
            71.87%     swapper  [kernel.kallsyms]  [k] native_safe_halt
      
      This requires to change signature of symbol__init() to receive struct
      perf_session_env *.
      Reported-by: NMinchan Kim <minchan@kernel.org>
      Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Ingo Molnar <mingo@kernel.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Cc: Minchan Kim <minchan@kernel.org>
      Cc: Namhyung Kim <namhyung.kim@lge.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/r/1407825645-24586-14-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      0a7e6d1b
    • N
      perf trace: Move call to symbol__init() after creating session · cb2ffae2
      Namhyung Kim 提交于
      This is a preparation of fixing dso__load_kernel_sym().  It needs a
      session info before calling symbol__init().
      Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Ingo Molnar <mingo@kernel.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Minchan Kim <minchan@kernel.org>
      Cc: Namhyung Kim <namhyung.kim@lge.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/1407825645-24586-13-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      cb2ffae2
    • A
      perf trace: Add beautifier for mremap flags param · 86998dda
      Alex Snast 提交于
      ~/devel/kernel/tools/perf(branch:master*) » sudo ./perf trace ~/mremap_test
           0.543 ( 0.003 ms): mprotect(start: 0x600000, len: 4096, prot: READ      ) = 0
           0.550 ( 0.003 ms): mprotect(start: 0x7f441260d000, len: 4096, prot: READ) = 0
           0.561 ( 0.010 ms): munmap(addr: 0x7f44125e2000, len: 165572             ) = 0
           0.595 ( 0.012 ms): mmap(len: 12288, prot: READ|WRITE, flags: SHARED|ANONYMOUS|LOCKED, fd: -1) = 0x12608000
           0.603 ( 0.006 ms): mremap(addr: 0x7f4412608000, old_len: 4096, new_len: 4096, flags: MAYMOVE|FIXED, new_addr: 0x7f16da295000) = 0xda295000
           0.608 ( 0.003 ms): mremap(addr: 0x7f441260a000, old_len: 4096, new_len: 4096, flags: MAYMOVE|FIXED, new_addr: 0x7f16da297000) = 0xda297000
           0.612 ( 0.003 ms): mremap(addr: 0x7f4412609000, old_len: 4096, new_len: 4096, flags: MAYMOVE|FIXED, new_addr: 0x7f16da296000) = 0xda296000
           0.619 ( 0.000 ms): exit_group(
      Signed-off-by: NAlex Snast <asnast@gmail.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/1407944560-26924-1-git-send-email-asnast@gmail.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      86998dda
  12. 12 8月, 2014 1 次提交
  13. 24 7月, 2014 1 次提交
    • A
      perf tools: Fix build on gcc 4.4.7 · 0524798c
      Arnaldo Carvalho de Melo 提交于
      [acme@sandy linux]$ gcc --version
      gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-3)
      Copyright (C) 2010 Free Software Foundation, Inc.
      This is free software; see the source for copying conditions.  There is NO
      warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
      
      [acme@sandy linux]$ make O=/tmp/build/perf -C tools/perf install-bin
      <SNIP>
        CC       /tmp/build/perf/builtin-trace.o
      builtin-trace.c: In function ‘perf_evlist__add_pgfault’:
      builtin-trace.c:1997: error: unknown field ‘sample_period’ specified in initializer
      make[1]: *** [/tmp/build/perf/builtin-trace.o] Error 1
      make: *** [install-bin] Error 2
      make: Leaving directory `/home/acme/git/linux/tools/perf'
      [acme@sandy linux]$ make O=/tmp/build/perf -C tools/perf install-bin
      make O=/tmp/build/perf -C tools/perf install-bin
      make: Entering directory `/home/acme/git/linux/tools/perf'
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-qt7h2g5fcf42qiw5hv7mgpjk@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      0524798c
  14. 09 7月, 2014 2 次提交
    • A
      perf trace: Fix build on 32-bit systems · 4414a3c5
      Arnaldo Carvalho de Melo 提交于
          CC       /tmp/build/perf/builtin-trace.o
        builtin-trace.c: In function 'print_location':
        builtin-trace.c:1792:4: error: format '%lx' expects argument of type 'long unsigned int', but argument 4 has type 'u64' [-Werror=format]
        builtin-trace.c:1794:3: error: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'u64' [-Werror=format]
        builtin-trace.c:1796:3: error: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'u64' [-Werror=format]
        cc1: all warnings being treated as errors
        make[1]: *** [/tmp/build/perf/builtin-trace.o] Error 1
        make[1]: *** Waiting for unfinished jobs....
        make: *** [install-bin] Error 2
        make: Leaving directory `/home/acme/git/linux/tools/perf'
      
        acme@linux-goap:~/git/linux> uname -a
        Linux linux-goap 3.7.10-1.16-desktop #1 SMP PREEMPT Fri May 31 20:21:23 UTC 2013 (97c14ba) i686 i686 i386 GNU/Linux
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stanislav Fomichev <stfomichev@yandex-team.ru>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-843p3aqbw531eqiu2hah8o9p@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      4414a3c5
    • S
      perf trace: Add pagefault statistics · a2ea67d7
      Stanislav Fomichev 提交于
      'perf trace' can show summary of events using -S option. This commit
      also reports number of major/minor pagefault events in this summary.
      
      $ perf trace -s --pf all -- sleep 1
      
       Summary of events:
      
       sleep (18604), 275 events, 99.6%, 197 minfaults, 0.000 msec
      
         syscall            calls      min       avg       max      stddev
                                     (msec)    (msec)    (msec)        (%)
         --------------- -------- --------- --------- ---------     ------
         read                   2     0.000     0.001     0.002    100.00%
         open                   3     0.004     0.005     0.007     21.13%
         close                  3     0.001     0.001     0.001      1.37%
         fstat                  3     0.001     0.002     0.002     10.66%
         mmap                   8     0.002     0.004     0.006     10.69%
         mprotect               4     0.003     0.005     0.008     24.68%
         munmap                 1     0.005     0.005     0.005      0.00%
         brk                    3     0.001     0.002     0.003     28.08%
         access                 3     0.002     0.003     0.005     24.48%
         nanosleep              1  1000.747  1000.747  1000.747      0.00%
         execve                 8     0.000     0.033     0.246     91.00%
         arch_prctl             1     0.001     0.001     0.001      0.00%
      Signed-off-by: NStanislav Fomichev <stfomichev@yandex-team.ru>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/1404842716-19190-1-git-send-email-stfomichev@yandex-team.ruSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      a2ea67d7
  15. 27 6月, 2014 4 次提交
    • S
      perf trace: Add possibility to switch off syscall events · e281a960
      Stanislav Fomichev 提交于
      Currently, we may either trace syscalls or syscalls+pagefaults.
      
      We'd like to be able to trace *only* pagefaults and this commit
      implements this feature.
      
      Example:
      
        [root@zoo /]# echo 1 > /proc/sys/vm/drop_caches ; trace --no-syscalls -F -p `pidof xchat`
             0.000 ( 0.000 ms): xchat/4574 majfault [g_unichar_get_script+0x11] => /usr/lib64/libglib-2.0.so.0.3800.2@0xc403b (x.)
             0.202 ( 0.000 ms): xchat/4574 majfault [_cairo_hash_table_lookup+0x53] => 0x2280ff0 (?.)
            20.854 ( 0.000 ms): xchat/4574 majfault [gdk_cairo_set_source_pixbuf+0x110] => /usr/bin/xchat@0x6da1f (x.)
          1022.000 ( 0.000 ms): xchat/4574 majfault [__memcpy_sse2_unaligned+0x29] => 0x7ff5a8ca0400 (?.)
        ^C[root@zoo /]#
      
      Below we can see malloc calls, 'trace' reading symbol tables in libraries to
      resolve symbols, etc.
      
        [root@zoo /]# echo 1 > /proc/sys/vm/drop_caches ; trace --no-syscalls -F all --cpu 1 sleep 10
             0.000 ( 0.000 ms): chrome/26589 minfault [0x1b53129] => /tmp/perf-26589.map@0x33cbcbf7f000 (x.)
            96.477 ( 0.000 ms): libvirtd/947 minfault [copy_user_enhanced_fast_string+0x5] => 0x7f7685bba000 (?k)
           113.164 ( 0.000 ms): Xorg/1063 minfault [0x786da] => 0x7fce52882a3c (?.)
          7162.801 ( 0.000 ms): chrome/3747 minfault [0x8e1a89] => 0xfcaefed0008 (?.)
      <SNIP>
          7773.138 ( 0.000 ms): chrome/3886 minfault [0x8e1a89] => 0xfcb0ce28008 (?.)
          7992.022 ( 0.000 ms): chrome/26574 minfault [0x1b5a708] => 0x3de7b5fc5000 (?.)
          8108.949 ( 0.000 ms): qemu-system-x8/4537 majfault [_int_malloc+0xee] => 0x7faffc466d60 (?.)
          8108.975 ( 0.000 ms): qemu-system-x8/4537 minfault [_int_malloc+0x102] => 0x7faffc466d60 (?.)
      <SNIP>
          8148.174 ( 0.000 ms): qemu-system-x8/4537 minfault [_int_malloc+0x102] => 0x7faffc4eb500 (?.)
          8270.855 ( 0.000 ms): chrome/26245 minfault [do_bo_emit_reloc+0xdb] => 0x45d092bc004 (?.)
          8270.869 ( 0.000 ms): chrome/26245 minfault [do_bo_emit_reloc+0x108] => 0x45d09150000 (?.)
      no symbols found in /usr/lib64/libspice-server.so.1.9.0, maybe install a debug package?
          8273.831 ( 0.000 ms): trace/20198 majfault [__memcmp_sse4_1+0xbc6] => /usr/lib64/libspice-server.so.1.9.0@0xdf000 (d.)
      <SNIP>
          8275.121 ( 0.000 ms): trace/20198 minfault [dso__load+0x38] => 0x14fe756 (?.)
      no symbols found in /usr/lib64/libelf-0.158.so, maybe install a debug package?
          8275.142 ( 0.000 ms): trace/20198 minfault [__memcmp_sse4_1+0xbc6] => /usr/lib64/libelf-0.158.so@0x0 (d.)
      <SNIP>
        [root@zoo /]#
      Signed-off-by: NStanislav Fomichev <stfomichev@yandex-team.ru>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/1403799268-1367-6-git-send-email-stfomichev@yandex-team.ruSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      e281a960
    • S
      perf trace: Add pagefaults record and replay support · 1e28fe0a
      Stanislav Fomichev 提交于
      Previous commit added live pagefault trace support, this one adds record
      and replay support.
      
      Example:
      
        [root@zoo /]# echo 1 > /proc/sys/vm/drop_caches ; trace -F all record -a sleep 10
        [ perf record: Woken up 0 times to write data ]
        [ perf record: Captured and wrote 1029.722 MB perf.data (~44989242 samples) ]
      
        [root@zoo /]# ls -la perf.data
        -rw-------. 1 root root 1083921722 Jun 26 17:44 perf.data
      
        [root@zoo /]# perf evlist
        raw_syscalls:sys_enter
        raw_syscalls:sys_exit
        major-faults
        minor-faults
      
        [root@zoo /]# trace -i perf.data | grep -v trace\/ | tail -15
           156.137 ( 0.000 ms): perl/18476 minfault [0xb4243] => 0x0 (?.)
           156.139 ( 0.000 ms): perl/18476 minfault [Perl_sv_clear+0x123] => 0x0 (?.)
           156.140 ( 0.000 ms): perl/18476 minfault [Perl_sv_clear+0xc4] => 0x0 (?.)
           156.144 ( 0.000 ms): perl/18476 minfault [_int_free+0xda] => 0x0 (?.)
           156.151 ( 0.000 ms): perl/18476 minfault [_int_free+0x1df] => 0x0 (?.)
           156.158 ( 0.000 ms): perl/18476 minfault [0xb4243] => 0x0 (?.)
           156.161 ( 0.000 ms): perl/18476 minfault [0xb4243] => 0x0 (?.)
           156.168 ( 0.000 ms): perl/18476 minfault [0xb4243] => 0x0 (?.)
           156.172 ( 0.000 ms): perl/18476 minfault [0xb4243] => 0x0 (?.)
           156.173 ( 0.000 ms): perl/18476 minfault [_int_free+0xda] => 0x0 (?.)
           156.183 ( 0.000 ms): perl/18476 minfault [Perl_hfree_next_entry+0xb4] => 0x0 (?.)
           156.197 ( 0.000 ms): perl/18476 minfault [_int_free+0x1df] => 0x0 (?.)
           156.216 ( 0.000 ms): perl/18476 minfault [Perl_sv_clear+0x123] => 0x0 (?.)
           156.221 ( 0.000 ms): perl/18476 minfault [Perl_sv_clear+0x123] => 0x0 (?.)
        [root@zoo /]#
      Signed-off-by: NStanislav Fomichev <stfomichev@yandex-team.ru>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/1403799268-1367-4-git-send-email-stfomichev@yandex-team.ruSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      1e28fe0a
    • S
      perf trace: Add support for pagefault tracing · 598d02c5
      Stanislav Fomichev 提交于
      This patch adds optional pagefault tracing support to 'perf trace'.
      
      Using -F/--pf option user can specify whether he wants minor, major or
      all pagefault events to be traced. This patch adds only live mode,
      record and replace will come in a separate patch.
      
      Example output:
      
        1756272.905 ( 0.000 ms): curl/5937 majfault [0x7fa7261978b6] => /usr/lib/x86_64-linux-gnu/libkrb5.so.26.0.0@0x85288 (d.)
        1862866.036 ( 0.000 ms): wget/8460 majfault [__clear_user+0x3f] => 0x659cb4 (?k)
      Signed-off-by: NStanislav Fomichev <stfomichev@yandex-team.ru>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/1403799268-1367-3-git-send-email-stfomichev@yandex-team.ruSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      598d02c5
    • S
      perf trace: Add perf_event parameter to tracepoint_handler · 0c82adcf
      Stanislav Fomichev 提交于
      It will be used by next pagefault tracing patches in the series.
      Signed-off-by: NStanislav Fomichev <stfomichev@yandex-team.ru>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/1403799268-1367-2-git-send-email-stfomichev@yandex-team.ruSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      0c82adcf
  16. 20 6月, 2014 3 次提交
    • A
      perf trace: Cache the is_exit syscall test · 5089f20e
      Arnaldo Carvalho de Melo 提交于
      No need to use two strcmp calls per syscall entry, do it just once, when
      reading the per syscall info.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-lymtxhz0mg3adyt5e2pssn8f@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      5089f20e
    • A
      perf trace: Remove needless reassignments · 77413534
      Arnaldo Carvalho de Melo 提交于
      The thread->priv value is already obtained a few lines earlier from the
      thread__trace() call. Leftovers from before thread__trace().
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-96laa634vzfwlwxurevo40wp@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      77413534
    • A
      perf trace: Fix up fd -> pathname resolution · cdcd1e6b
      Arnaldo Carvalho de Melo 提交于
      There was a brown paper bag bug in the patch that introduced a reference
      implementation on using 'perf probe' made wannabe tracepoints that broke fd ->
      pathname resolution, fix it:
      
        [root@zoo ~]# perf probe 'vfs_getname=getname_flags:65 pathname=result->name:string'
        Added new event:
          probe:vfs_getname    (on getname_flags:65 with pathname=result->name:string)
      
        You can now use it in all perf tools, such as:
      
      	perf record -e probe:vfs_getname -aR sleep 1
      
        [root@zoo ~]
      
      Before:
      
        [acme@zoo linux]$ trace touch -e open,fstat /tmp/b
           1.159 ( 0.007 ms): open(filename: 0x7fd73f2fe088, flags: CLOEXEC                         ) = 3
           1.163 ( 0.002 ms): fstat(fd: 3, statbuf: 0x7fff1b25e610                                  ) = 0
           1.192 ( 0.009 ms): open(filename: 0x7fd73f4fedb8, flags: CLOEXEC                         ) = 3
           1.201 ( 0.002 ms): fstat(fd: 3, statbuf: 0x7fff1b25e660                                  ) = 0
           1.501 ( 0.013 ms): open(filename: 0x7fd73f0a1610, flags: CLOEXEC                         ) = 3
           1.505 ( 0.002 ms): fstat(fd: 3, statbuf: 0x7fd73f2ddb60                                  ) = 0
           1.581 ( 0.011 ms): open(filename: 0x7fff1b2603da, flags: CREAT|NOCTTY|NONBLOCK|WRONLY, mode: 438) = 3
        [acme@zoo linux]$
      
      After:
      
        [acme@zoo linux]$ trace touch -e open,fstat,dup2,mmap,close /tmp/b
           1.105 ( 0.004 ms): mmap(len: 4096, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1    ) = 0x2fbf000
           1.136 ( 0.008 ms): open(filename: 0x7f8902dbc088, flags: CLOEXEC                         ) = 3
           1.140 ( 0.002 ms): fstat(fd: 3</etc/ld.so.cache>, statbuf: 0x7fff19889ef0                ) = 0
           1.146 ( 0.004 ms): mmap(len: 86079, prot: READ, flags: PRIVATE, fd: 3</etc/ld.so.cache>  ) = 0x2fa9000
           1.149 ( 0.001 ms): close(fd: 3</etc/ld.so.cache>                                         ) = 0
           1.170 ( 0.010 ms): open(filename: 0x7f8902fbcdb8, flags: CLOEXEC                         ) = 3
           1.178 ( 0.002 ms): fstat(fd: 3</lib64/libc.so.6>, statbuf: 0x7fff19889f40                ) = 0
           1.188 ( 0.006 ms): mmap(len: 3924576, prot: EXEC|READ, flags: PRIVATE|DENYWRITE, fd: 3</lib64/libc.so.6>) = 0x29e2000
           1.207 ( 0.007 ms): mmap(addr: 0x7f8902d96000, len: 24576, prot: READ|WRITE, flags: PRIVATE|DENYWRITE|FIXED, fd: 3</lib64/libc.so.6>, off: 1785856) = 0x2d96000
           1.217 ( 0.004 ms): mmap(addr: 0x7f8902d9c000, len: 16992, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS|FIXED, fd: -1) = 0x2d9c000
           1.228 ( 0.002 ms): close(fd: 3</lib64/libc.so.6>                                         ) = 0
           1.243 ( 0.003 ms): mmap(len: 4096, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1    ) = 0x2fa8000
           1.250 ( 0.003 ms): mmap(len: 8192, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1    ) = 0x2fa6000
           1.452 ( 0.010 ms): open(filename: 0x7f8902b5f610, flags: CLOEXEC                         ) = 3
           1.455 ( 0.002 ms): fstat(fd: 3</usr/lib/locale/locale-archive>, statbuf: 0x7f8902d9bb60  ) = 0
           1.461 ( 0.004 ms): mmap(len: 106070960, prot: READ, flags: PRIVATE, fd: 3</usr/lib/locale/locale-archive>) = 0xfc4b9000
           1.469 ( 0.002 ms): close(fd: 3</usr/lib/locale/locale-archive>                           ) = 0
           1.528 ( 0.010 ms): open(filename: 0x7fff1988c3da, flags: CREAT|NOCTTY|NONBLOCK|WRONLY, mode: 438) = 3
           1.532 ( 0.002 ms): dup2(oldfd: 3</tmp/b>                                                 ) = 0
           1.535 ( 0.001 ms): close(fd: 3</tmp/b>                                                   ) = 0
           1.544 ( 0.001 ms): close(                                                                ) = 0
           1.555 ( 0.001 ms): close(fd: 1                                                           ) = 0
           1.558 ( 0.001 ms): close(fd: 2                                                           ) = 0
        [acme@zoo linux]$
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-vcm22xpjxc3j4hbyuzjzf7ik@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      cdcd1e6b
  17. 10 3月, 2014 1 次提交
  18. 14 2月, 2014 1 次提交
  19. 10 2月, 2014 1 次提交
  20. 15 1月, 2014 1 次提交
  21. 13 1月, 2014 5 次提交
  22. 28 12月, 2013 1 次提交
  23. 20 12月, 2013 1 次提交