1. 29 10月, 2012 9 次提交
  2. 28 10月, 2012 1 次提交
  3. 26 10月, 2012 11 次提交
  4. 25 10月, 2012 16 次提交
    • A
      perf trace: Use sched:sched_stat_runtime to provide a thread summary · 1302d88e
      Arnaldo Carvalho de Melo 提交于
      [root@sandy ~]# perf trace --sched --duration 0.100 --pid `pidof firefox`
      <SNIP>
       17079.847 ( 0.009 ms): 17643 poll(ufds: 140037623086496, nfds: 11, timeout_msecs: 0) = 0 Timeout
       17079.892 ( 0.010 ms): 17643 read(fd: 4, buf: 140038178943092, count: 4096         ) = -1 EAGAIN Resource temporarily unavailable
       17079.921 ( 0.013 ms): 17643 poll(ufds: 140037623086496, nfds: 11, timeout_msecs: 0) = 0 Timeout
       17079.949 ( 0.009 ms): 17643 read(fd: 4, buf: 140038178943092, count: 4096         ) = -1 EAGAIN Resource temporarily unavailable
      ^C
       _____________________________________________________________________
       __)    Summary of events    (__
      
                    [ task - pid ]     [ events ] [ ratio ]  [ runtime ]
       _____________________________________________________________________
      
                   firefox - 17643 :      18013   [ 72.2% ]    359.110 ms
                   firefox - 17663 :         41   [  0.2% ]     21.439 ms
                   firefox - 17664 :       6840   [ 27.4% ]    133.642 ms
                   firefox - 17667 :         46   [  0.2% ]      0.682 ms
      [root@sandy ~]#
      
      This is equivalent to the 'perf trace summary' subcomand in the tmp.perf/trace2
      branch.
      
      Another example, setting a huge duration filter to get just a system
      wide summary:
      
      [root@sandy ~]# perf trace --duration 10000.0 --sched
      ^C
       _____________________________________________________________________
       __)    Summary of events    (__
      
                    [ task - pid ]     [ events ] [ ratio ]  [ runtime ]
       _____________________________________________________________________
      
                 scsi_eh_1 - 258   :         15   [  0.0% ]      0.133 ms
              kworker/0:1H - 322   :         13   [  0.0% ]      0.032 ms
               jbd2/dm-0-8 - 384   :          4   [  0.0% ]      0.115 ms
               flush-253:0 - 470   :          1   [  0.0% ]      0.027 ms
                   firefox - 950   :       4783   [  0.1% ]     24.863 ms
                   firefox - 992   :       1883   [  0.1% ]      6.808 ms
                   firefox - 995   :         35   [  0.0% ]      0.111 ms
               ksoftirqd/6 - 4362  :          2   [  0.0% ]      0.005 ms
               ksoftirqd/7 - 4365  :          1   [  0.0% ]      0.007 ms
                      Xorg - 4671  :        148   [  0.0% ]      0.912 ms
           gnome-settings- - 4846  :         14   [  0.0% ]      0.086 ms
           seahorse-daemon - 4847  :         14   [  0.0% ]      0.092 ms
               gnome-panel - 4875  :         46   [  0.0% ]      0.159 ms
           gnome-power-man - 4918  :         16   [  0.0% ]      0.065 ms
           gvfs-afc-volume - 4992  :         77   [  0.0% ]      0.136 ms
           gnome-screensav - 5114  :         24   [  0.0% ]      0.128 ms
                     xchat - 8082  :        466   [  0.0% ]      2.019 ms
                  synergyc - 8369  :        941   [  0.0% ]      3.291 ms
                  synergyc - 8371  :         85   [  0.0% ]      1.817 ms
               jbd2/dm-4-8 - 9352  :          4   [  0.0% ]      0.109 ms
                   rpcbind - 9786  :          3   [  0.0% ]      0.017 ms
              rtkit-daemon - 12802 :         10   [  0.0% ]      0.038 ms
              rtkit-daemon - 12803 :          8   [  0.0% ]      0.000 ms
             udisks-daemon - 13020 :         27   [  0.0% ]      0.240 ms
               kworker/7:0 - 14651 :        669   [  0.0% ]      2.616 ms
               kworker/5:1 - 16220 :          2   [  0.0% ]      0.069 ms
               kworker/4:0 - 19776 :         13   [  0.0% ]      0.176 ms
                   openvpn - 20131 :        133   [  0.0% ]      0.762 ms
           plugin-containe - 20508 :      60658   [  1.7% ]    131.153 ms
              npviewer.bin - 20520 :      72208   [  2.0% ]    138.945 ms
              npviewer.bin - 20542 :         35   [  0.0% ]      0.074 ms
              npviewer.bin - 20543 :         30   [  0.0% ]      0.074 ms
              npviewer.bin - 20547 :         35   [  0.0% ]      0.092 ms
              npviewer.bin - 20552 :         35   [  0.0% ]      0.093 ms
                      sshd - 20645 :         32   [  0.0% ]      0.071 ms
              npviewer.bin - 21053 :         35   [  0.0% ]      0.074 ms
              npviewer.bin - 21054 :         35   [  0.0% ]      0.097 ms
               kworker/0:2 - 21169 :        149   [  0.0% ]      1.143 ms
               kworker/3:0 - 22171 :        113   [  0.0% ]     96.892 ms
               flush-253:4 - 22410 :          1   [  0.0% ]      0.028 ms
               kworker/6:0 - 24581 :         25   [  0.0% ]      0.275 ms
               kworker/1:0 - 25572 :          4   [  0.0% ]      0.103 ms
               kworker/2:1 - 26299 :        138   [  0.0% ]      1.440 ms
               kworker/0:0 - 26325 :          1   [  0.0% ]      0.003 ms
                      perf - 26330 :    3506967   [ 96.1% ]   6648.310 ms
      [root@sandy ~]#
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@gmail.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Link: http://lkml.kernel.org/n/tip-mzuli0srnxyi1o029py6537x@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      1302d88e
    • A
      perf trace: Count number of events for each thread and globally · efd5745e
      Arnaldo Carvalho de Melo 提交于
      The nr_events in trace__run was local, but we will need it in other
      trace methods, move it to struct trace.
      
      We'll also need the number of events per thread, so introduce a
      nr_events method for that in struct thread_trace.
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@gmail.com>
      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-ksutaz0mtejnf7e6az3ca1td@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      efd5745e
    • A
      perf tools: Don't stop synthesizing threads when one vanishes · ba361c92
      Arnaldo Carvalho de Melo 提交于
      The perf_event__synthesize_threads routine synthesizes all the existing
      threads in the system, because we don't have any kernel facilities to
      ask for PERF_RECORD_{FORK,MMAP,COMM} for existing threads.
      
      It was returning an error as soon as one thread couldn't be synthesized,
      which is a bit extreme when, for instance, a forkish workload is
      running, like a kernel compile.
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@gmail.com>
      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-i7oas1eodpoer2bx38fwyasv@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      ba361c92
    • I
      Merge tag 'perf-core-for-mingo' of... · 6ca2a9c6
      Ingo Molnar 提交于
      Merge tag 'perf-core-for-mingo' 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:
      
       * Align the 'Ok'/'FAILED!' test results in 'perf test.
      
       * Support interrupted syscalls in 'trace'
      
       * Add an event duration column and filter in 'trace'.
      
       * There are references to the man pages in some tools, so try to build
         Documentation when installing, warning the user if that is not possible,
         from Borislav Petkov.
      
       * Give user better message if precise is not supported, from David Ahern.
      
       * Try to find cross-built objdump path by using the session environment
         information in the perf.data file header, from Irina Tirdea, original
         patch and idea by Namhyung Kim.
      
       * Diplays more output on features check for make V=1, so that one can figure
         out what is happening by looking at gcc output, etc. From Jiri Olsa.
      
       * Account the nr_entries in rblist properly, fix by Suzuki K. Poulose.
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      6ca2a9c6
    • B
      perf tools: Try to build Documentation when installing · af3df2cf
      Borislav Petkov 提交于
      There's a portion in the "perf list" output refering to the exact
      specification of raw hardware events.
      
      Since this description is in the perf-list manpage, try to build and
      install the man pages, warning the user when that is not possible
      due to missing packages (xmlto and asciidoc).
      Signed-off-by: NBorislav Petkov <borislav.petkov@amd.com>
      Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Link: http://lkml.kernel.org/n/tip-ij71ysszkdvz3fy3wr331bke@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      af3df2cf
    • A
      perf trace: Print the name of a syscall when failing to read its info · 814d7a4d
      Arnaldo Carvalho de Melo 提交于
      When failing to read the tracepoint event format, like currently with
      sys_execve, that is not defined via SYSCALL_DEFINE macros and thus
      doesn't have an entry in:
      
        $ ls -d /sys/kernel/debug/tracing/events/syscalls/sys_enter_*exec*
        /sys/kernel/debug/tracing/events/syscalls/sys_enter_kexec_load
        $
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@gmail.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      echo Link: http://lkml.kernel.org/n/tip-`ranpwd -l 24`@git.kernel.org
      Link: http://lkml.kernel.org/n/tip-q3ak0j8b81yxylykq5wp2uwi@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      814d7a4d
    • A
      perf tools: Pretty print errno for some more functions · 8b745263
      Arnaldo Carvalho de Melo 提交于
      This time: access, open and socket.
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@gmail.com>
      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-e19dmpz8zxqo2uebxnp7ilkf@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      8b745263
    • A
      perf trace: Add duration filter · ae9ed035
      Arnaldo Carvalho de Melo 提交于
      Example:
      
      [acme@sandy linux]$ perf trace --duration 0.025 usleep 1
           2.221 ( 0.958 ms): 6724 execve(arg0: 140733557168278, arg1: 140733557178768, arg2: 16134304, arg3: 140733557167840, arg4: 7955998171588342573, arg5: 6723) = -2
           3.690 ( 1.443 ms): 6724 execve(arg0: 140733557168295, arg1: 140733557178768, arg2: 16134304, arg3: 140733557167840, arg4: 7955998171588342573, arg5: 6723) = 0
           3.979 ( 0.048 ms): 6724 open(filename: 208733843841, flags: 0, mode: 1                        ) = 3
           4.071 ( 0.075 ms): 6724 open(filename: 139744419925673, flags: 0, mode: 0                     ) = 3
           4.318 ( 0.056 ms): 6724 nanosleep(rqtp: 140734030404608, rmtp: 0                              ) = 0
      [acme@sandy linux]$ perf trace --duration 0.100 usleep 1
           1.143 ( 1.021 ms): 6726 execve(arg0: 140736323962279, arg1: 140736323972752, arg2: 34926752, arg3: 140736323961824, arg4: 7955998171588342573, arg5: 6725) = 0
      [acme@sandy linux]$
      
      Cherry picked from tmp.perf/trace2 branch.
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@gmail.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Link: http://lkml.kernel.org/n/tip-oslw2j2958we9qf0ctra4whd@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      ae9ed035
    • A
      perf trace: Add an event duration column · 60c907ab
      Arnaldo Carvalho de Melo 提交于
       # perf trace usleep 1 | tail -10
           0.453 ( 0.002 ms): mmap(addr: 0, len: 4096, prot: 3, flags: 34, fd: 4294967295, off: 0   ) = -763342848
           0.456 ( 0.001 ms): mmap(addr: 0, len: 4096, prot: 3, flags: 34, fd: 4294967295, off: 0   ) = -763346944
           0.459 ( 0.001 ms): arch_prctl(option: 4098, arg2: 140126839658240, arg3: 140126839652352, arg4: 34, arg5: 4294967295) = 0
           0.473 ( 0.003 ms): mprotect(start: 208741634048, len: 16384, prot: 1                     ) = 0
           0.477 ( 0.003 ms): mprotect(start: 208735956992, len: 4096, prot: 1                      ) = 0
           0.483 ( 0.004 ms): munmap(addr: 140126839664640, len: 91882                              ) = 0
           0.540 ( 0.001 ms): brk(brk: 0                                                            ) = 31928320
           0.542 ( 0.002 ms): brk(brk: 32063488                                                     ) = 32063488
           1.456 ( 0.901 ms): nanosleep(rqtp: 140735472817168, rmtp: 0                              ) = 0
           1.462 ( 0.000 ms): exit_group(error_code: 0
       #
      
      This also comes from the tmp.perf/trace2 branch.
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@gmail.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Link: http://lkml.kernel.org/n/tip-g9akh5hjw2kvjerpo9xror6f@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      60c907ab
    • A
      perf trace: Support interrupted syscalls · 752fde44
      Arnaldo Carvalho de Melo 提交于
      Using the same strategies as in the tmp.perf/trace2, i.e. the 'trace'
      tool implemented by tglx, just updated to the current codebase.
      
      Example:
      
      [root@sandy linux]# perf trace usleep 1  | tail
           2.003: mmap(addr: 0, len: 4096, prot: 3, flags: 34, fd: 4294967295, off: 0   ) = -2128396288
           2.017: mmap(addr: 0, len: 4096, prot: 3, flags: 34, fd: 4294967295, off: 0   ) = -2128400384
           2.029: arch_prctl(option: 4098, arg2: 140146949441280, arg3: 140146949435392, arg4: 34, arg5: 4294967295) = 0
           2.084: mprotect(start: 208741634048, len: 16384, prot: 1                     ) = 0
           2.098: mprotect(start: 208735956992, len: 4096, prot: 1                      ) = 0
           2.122: munmap(addr: 140146949447680, len: 91882                              ) = 0
           2.359: brk(brk: 0                                                            ) = 28987392
           2.371: brk(brk: 29122560                                                     ) = 29122560
           2.490: nanosleep(rqtp: 140735694241504, rmtp: 0                              ) = 0
           2.507: exit_group(error_code: 0
      [root@sandy linux]#
      
      For now the timestamp and duration are always on, will be selectable.
      
      Also if multiple threads are being monitored, its tid will appear.
      
      The ret output continues to be interpreted a la strace.
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@gmail.com>
      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-ly9ulroru4my5isn0xe9gr0m@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      752fde44
    • A
      perf test: Align the 'Ok'/'FAILED!' test results · 9a8e85ad
      Arnaldo Carvalho de Melo 提交于
      And also print 'FAILED!' in red.
      Suggested-by: NIngo Molnar <mingo@kernel.org>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@gmail.com>
      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-rkisq85w24il3e2yl3nzumhu@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      9a8e85ad
    • D
      perf tools: Give user better message if precise is not supported · 2305c82f
      David Ahern 提交于
      Platforms (e.g., VM's) without support for precise mode get a confusing
      error message. e.g.,
      $ perf record -e cycles:p -a -- sleep 1
      
        Error: sys_perf_event_open() syscall returned with 95 (Operation not
        supported).  /bin/dmesg may provide additional information.
      
        No hardware sampling interrupt available. No APIC? If so then you can
        boot the kernel with the "lapic" boot parameter to force-enable it.
        sleep: Terminated
      
      which is not clear that precise mode might be the root problem. With this
      patch:
      
      $ perf record -e cycles:p -fo /tmp/perf.data -- sleep 1
        Error:
        'precise' request may not be supported. Try removing 'p' modifier
        sleep: Terminated
      
      v2: softened message to 'may not be' supported per Robert's suggestion
      Signed-off-by: NDavid Ahern <dsahern@gmail.com>
      Cc: Ingo Molnar <mingo@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Robert Richter <robert.richter@amd.com>
      Link: http://lkml.kernel.org/r/1347569955-54626-4-git-send-email-dsahern@gmail.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      2305c82f
    • S
      Account the nr_entries in rblist properly · 03f2f93a
      Suzuki K. Poulose 提交于
      The nr_entries in rblist is never decremented when an element
      is deleted. Also, use rblist__remove_node to delete a node in
      rblist__delete(). This would keep the nr_entries sane.
      Signed-off-by: NSuzuki K. Poulose <suzuki@in.ibm.com>
      Acked-by: NDavid S. Ahern <dsahern@gmail.com>
      Cc: David S. Ahern <dsahern@gmail.com>
      Link: http://lkml.kernel.org/r/20120831070834.14806.87398.stgit@suzukikp.in.ibm.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      03f2f93a
    • I
      perf tools: Try to find cross-built objdump path · 68e94f4e
      Irina Tirdea 提交于
      As we have architecture information of saved perf.data file, we can try
      to find cross-built objdump path.
      
      The triplets include support for Android (arm, x86 and mips
      architectures).
      Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
      Originally-by: NNamhyung Kim <namhyung@kernel.org>
      Acked-by: NNamhyung Kim <namhyung@kernel.org>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Ingo Molnar <mingo@kernel.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Namhyung Kim <namhyung.kim@lge.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Link: http://lkml.kernel.org/r/1350344020-8071-5-git-send-email-irina.tirdea@gmail.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      68e94f4e
    • A
      perf tools: Remove noise in python version feature test · feb8ada4
      Arnaldo Carvalho de Melo 提交于
      Now that the feature tests honours the V=1 make verbosity switch, add a
      return to the main() routine in the python version test, to avoid this
      distraction:
      
      CHK python version
      <stdin>: In function 'main':
      <stdin>:5: warning: control reaches end of non-void function
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@gmail.com>
      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-999no5yxlc2oqo9xjeez5zmv@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      feb8ada4
    • J
      perf tools: Diplays more output on features check for make V=1 · 28d213ba
      Jiri Olsa 提交于
      Adding more verbose output for compile time features checking, to ease
      up debuging of feature detection failures.
      Suggested-by: NIngo Molnar <mingo@kernel.org>
      Signed-off-by: NJiri Olsa <jolsa@redhat.com>
      Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/n/tip-fbjha6xs5soyaiek8j4142xg@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      28d213ba
  5. 24 10月, 2012 3 次提交