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Author SHA1 Message Date
yuzhoujian f1f8ad52f8 perf stat: Add support to print counts after a period of time 
Introduce a new option to print counts after N milliseconds and update
'perf stat' documentation accordingly.

Show below is the output of the new option for perf stat.

  $ perf stat --time 2000 -e cycles -a
  Performance counter stats for 'system wide':

        157,260,423      cycles

        2.003060766 seconds time elapsed

We can print the count deltas after N milliseconds with this new
introduced option. This option is not supported with "-I" option.

In addition, according to Kangliang's patch(19afd10410), the
monitoring overhead for system-wide core event could be very high if the
interval-print parameter was below 100ms, and the limitation value is
10ms.

So the same warning will be displayed when the time is set between 10ms
to 100ms, and the minimal time is limited to 10ms. Users can make a
decision according to their spcific cases.

Committer notes:

This actually stops the workload after the specified time, then prints
the counts.

So I renamed the option to --timeout and updated the documentation to
state that it will not just print the counts after the specified time,
but will really stop the 'perf stat' session and print the counts.

The rename from 'time' to 'timeout' also fixes the build in systems
where 'time' is used by glibc and can't be used as a name of a variable,
such as centos:5 and centos:6.

Changes since v3:
- none.

Changes since v2:
- modify the time check in __run_perf_stat func to keep some consistency
  with the workload case.
- add the warning when the time is set between 10ms to 100ms.
- add the pr_err when the time is set below 10ms.

Changes since v1:
- none.

Signed-off-by: yuzhoujian <yuzhoujian@didichuxing.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1517217923-8302-3-git-send-email-ufo19890607@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2018-02-16 10:18:06 -03:00
yuzhoujian db06a269ec perf stat: Add support to print counts for fixed times 
Introduce a new option to print counts for fixed number of times and
update 'perf stat' documentation accordingly.

Show below is the output of the new option for perf stat.

  $ perf stat -I 1000 --interval-count 2 -e cycles -a
  #           time             counts unit events
           1.002827089         93,884,870      cycles
           2.004231506         56,573,446      cycles

We can just print the counts for several times with this newly
introduced option. The usage of it is a little like 'vmstat', and it
should be used together with "-I" option.

  $ vmstat -n 1 2
  procs ---------memory-------------- --swap- ----io-- -system-- ------cpu---
   r  b swpd   free   buff   cache    si   so  bi   bo  in   cs us sy id wa st
   0  0    0 78270544 547484 51732076  0   0   0   20    1    1  1  0 99  0 0
   0  0    0 78270512 547484 51732080  0   0   0   16  477 1555  0  0 100 0 0

Changes since v3:
- merge interval_count check and times check to one line.
- fix the wrong indent in stat.h
- use stat_config.times instead of 'times' in cmd_stat function.

Changes since v2:
- none.

Changes since v1:
- change the name of the new option "times-print" to "interval-count".
- keep the new option interval specifically.

Signed-off-by: yuzhoujian <yuzhoujian@didichuxing.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1517217923-8302-2-git-send-email-ufo19890607@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2018-02-16 10:09:24 -03:00
Jin Yao 29734550c9 perf stat: Resort '--per-thread' result 
There are many threads reported if we enable '--per-thread'
globally.

1. Most of the threads are not counted or counting value 0.
This patch removes these threads.

2. We also resort the threads in display according to the
counting value. It's useful for user to see the hottest
threads easily.

For example, the new results would be:

root@skl:/tmp# perf stat --per-thread
^C
 Performance counter stats for 'system wide':

            perf-24165              4.302433      cpu-clock (msec)          #    0.001 CPUs utilized
          vmstat-23127              1.562215      cpu-clock (msec)          #    0.000 CPUs utilized
      irqbalance-2780               0.827851      cpu-clock (msec)          #    0.000 CPUs utilized
            sshd-23111              0.278308      cpu-clock (msec)          #    0.000 CPUs utilized
        thermald-2841               0.230880      cpu-clock (msec)          #    0.000 CPUs utilized
            sshd-23058              0.207306      cpu-clock (msec)          #    0.000 CPUs utilized
     kworker/0:2-19991              0.133983      cpu-clock (msec)          #    0.000 CPUs utilized
   kworker/u16:1-18249              0.125636      cpu-clock (msec)          #    0.000 CPUs utilized
       rcu_sched-8                  0.085533      cpu-clock (msec)          #    0.000 CPUs utilized
   kworker/u16:2-23146              0.077139      cpu-clock (msec)          #    0.000 CPUs utilized
           gmain-2700               0.041789      cpu-clock (msec)          #    0.000 CPUs utilized
     kworker/4:1-15354              0.028370      cpu-clock (msec)          #    0.000 CPUs utilized
     kworker/6:0-17528              0.023895      cpu-clock (msec)          #    0.000 CPUs utilized
    kworker/4:1H-1887               0.013209      cpu-clock (msec)          #    0.000 CPUs utilized
     kworker/5:2-31362              0.011627      cpu-clock (msec)          #    0.000 CPUs utilized
      watchdog/0-11                 0.010892      cpu-clock (msec)          #    0.000 CPUs utilized
     kworker/3:2-12870              0.010220      cpu-clock (msec)          #    0.000 CPUs utilized
     ksoftirqd/0-7                  0.008869      cpu-clock (msec)          #    0.000 CPUs utilized
      watchdog/1-14                 0.008476      cpu-clock (msec)          #    0.000 CPUs utilized
      watchdog/7-50                 0.002944      cpu-clock (msec)          #    0.000 CPUs utilized
      watchdog/3-26                 0.002893      cpu-clock (msec)          #    0.000 CPUs utilized
      watchdog/4-32                 0.002759      cpu-clock (msec)          #    0.000 CPUs utilized
      watchdog/2-20                 0.002429      cpu-clock (msec)          #    0.000 CPUs utilized
      watchdog/6-44                 0.001491      cpu-clock (msec)          #    0.000 CPUs utilized
      watchdog/5-38                 0.001477      cpu-clock (msec)          #    0.000 CPUs utilized
       rcu_sched-8                        10      context-switches          #    0.117 M/sec
   kworker/u16:1-18249                     7      context-switches          #    0.056 M/sec
            sshd-23111                     4      context-switches          #    0.014 M/sec
          vmstat-23127                     4      context-switches          #    0.003 M/sec
            perf-24165                     4      context-switches          #    0.930 K/sec
     kworker/0:2-19991                     3      context-switches          #    0.022 M/sec
   kworker/u16:2-23146                     3      context-switches          #    0.039 M/sec
     kworker/4:1-15354                     2      context-switches          #    0.070 M/sec
     kworker/6:0-17528                     2      context-switches          #    0.084 M/sec
            sshd-23058                     2      context-switches          #    0.010 M/sec
     ksoftirqd/0-7                         1      context-switches          #    0.113 M/sec
      watchdog/0-11                        1      context-switches          #    0.092 M/sec
      watchdog/1-14                        1      context-switches          #    0.118 M/sec
      watchdog/2-20                        1      context-switches          #    0.412 M/sec
      watchdog/3-26                        1      context-switches          #    0.346 M/sec
      watchdog/4-32                        1      context-switches          #    0.362 M/sec
      watchdog/5-38                        1      context-switches          #    0.677 M/sec
      watchdog/6-44                        1      context-switches          #    0.671 M/sec
      watchdog/7-50                        1      context-switches          #    0.340 M/sec
    kworker/4:1H-1887                      1      context-switches          #    0.076 M/sec
        thermald-2841                      1      context-switches          #    0.004 M/sec
           gmain-2700                      1      context-switches          #    0.024 M/sec
      irqbalance-2780                      1      context-switches          #    0.001 M/sec
     kworker/3:2-12870                     1      context-switches          #    0.098 M/sec
     kworker/5:2-31362                     1      context-switches          #    0.086 M/sec
   kworker/u16:1-18249                     2      cpu-migrations            #    0.016 M/sec
   kworker/u16:2-23146                     2      cpu-migrations            #    0.026 M/sec
       rcu_sched-8                         1      cpu-migrations            #    0.012 M/sec
            sshd-23058                     1      cpu-migrations            #    0.005 M/sec
            perf-24165             8,833,385      cycles                    #    2.053 GHz
          vmstat-23127             1,702,699      cycles                    #    1.090 GHz
      irqbalance-2780                739,847      cycles                    #    0.894 GHz
            sshd-23111               269,506      cycles                    #    0.968 GHz
        thermald-2841                204,556      cycles                    #    0.886 GHz
            sshd-23058               158,780      cycles                    #    0.766 GHz
     kworker/0:2-19991               112,981      cycles                    #    0.843 GHz
   kworker/u16:1-18249               100,926      cycles                    #    0.803 GHz
       rcu_sched-8                    74,024      cycles                    #    0.865 GHz
   kworker/u16:2-23146                55,984      cycles                    #    0.726 GHz
           gmain-2700                 34,278      cycles                    #    0.820 GHz
     kworker/4:1-15354                20,665      cycles                    #    0.728 GHz
     kworker/6:0-17528                16,445      cycles                    #    0.688 GHz
     kworker/5:2-31362                 9,492      cycles                    #    0.816 GHz
      watchdog/3-26                    8,695      cycles                    #    3.006 GHz
    kworker/4:1H-1887                  8,238      cycles                    #    0.624 GHz
      watchdog/4-32                    7,580      cycles                    #    2.747 GHz
     kworker/3:2-12870                 7,306      cycles                    #    0.715 GHz
      watchdog/2-20                    7,274      cycles                    #    2.995 GHz
      watchdog/0-11                    6,988      cycles                    #    0.642 GHz
     ksoftirqd/0-7                     6,376      cycles                    #    0.719 GHz
      watchdog/1-14                    5,340      cycles                    #    0.630 GHz
      watchdog/5-38                    4,061      cycles                    #    2.749 GHz
      watchdog/6-44                    3,976      cycles                    #    2.667 GHz
      watchdog/7-50                    3,418      cycles                    #    1.161 GHz
          vmstat-23127             2,511,699      instructions              #    1.48  insn per cycle
            perf-24165             1,829,908      instructions              #    0.21  insn per cycle
      irqbalance-2780              1,190,204      instructions              #    1.61  insn per cycle
        thermald-2841                143,544      instructions              #    0.70  insn per cycle
            sshd-23111               128,138      instructions              #    0.48  insn per cycle
            sshd-23058                57,654      instructions              #    0.36  insn per cycle
       rcu_sched-8                    44,063      instructions              #    0.60  insn per cycle
   kworker/u16:1-18249                42,551      instructions              #    0.42  insn per cycle
     kworker/0:2-19991                25,873      instructions              #    0.23  insn per cycle
   kworker/u16:2-23146                21,407      instructions              #    0.38  insn per cycle
           gmain-2700                 13,691      instructions              #    0.40  insn per cycle
     kworker/4:1-15354                12,964      instructions              #    0.63  insn per cycle
     kworker/6:0-17528                10,034      instructions              #    0.61  insn per cycle
     kworker/5:2-31362                 5,203      instructions              #    0.55  insn per cycle
     kworker/3:2-12870                 4,866      instructions              #    0.67  insn per cycle
    kworker/4:1H-1887                  3,586      instructions              #    0.44  insn per cycle
     ksoftirqd/0-7                     3,463      instructions              #    0.54  insn per cycle
      watchdog/0-11                    3,135      instructions              #    0.45  insn per cycle
      watchdog/1-14                    3,135      instructions              #    0.59  insn per cycle
      watchdog/2-20                    3,135      instructions              #    0.43  insn per cycle
      watchdog/3-26                    3,135      instructions              #    0.36  insn per cycle
      watchdog/4-32                    3,135      instructions              #    0.41  insn per cycle
      watchdog/5-38                    3,135      instructions              #    0.77  insn per cycle
      watchdog/6-44                    3,135      instructions              #    0.79  insn per cycle
      watchdog/7-50                    3,135      instructions              #    0.92  insn per cycle
          vmstat-23127               539,181      branches                  #  345.139 M/sec
            perf-24165               375,364      branches                  #   87.245 M/sec
      irqbalance-2780                262,092      branches                  #  316.593 M/sec
        thermald-2841                 31,611      branches                  #  136.915 M/sec
            sshd-23111                21,874      branches                  #   78.596 M/sec
            sshd-23058                10,682      branches                  #   51.528 M/sec
       rcu_sched-8                     8,693      branches                  #  101.633 M/sec
   kworker/u16:1-18249                 7,891      branches                  #   62.808 M/sec
     kworker/0:2-19991                 5,761      branches                  #   42.998 M/sec
   kworker/u16:2-23146                 4,099      branches                  #   53.138 M/sec
     kworker/4:1-15354                 2,755      branches                  #   97.110 M/sec
           gmain-2700                  2,638      branches                  #   63.127 M/sec
     kworker/6:0-17528                 2,216      branches                  #   92.739 M/sec
     kworker/5:2-31362                 1,132      branches                  #   97.360 M/sec
     kworker/3:2-12870                 1,081      branches                  #  105.773 M/sec
    kworker/4:1H-1887                    725      branches                  #   54.887 M/sec
     ksoftirqd/0-7                       707      branches                  #   79.716 M/sec
      watchdog/0-11                      652      branches                  #   59.860 M/sec
      watchdog/1-14                      652      branches                  #   76.923 M/sec
      watchdog/2-20                      652      branches                  #  268.423 M/sec
      watchdog/3-26                      652      branches                  #  225.372 M/sec
      watchdog/4-32                      652      branches                  #  236.318 M/sec
      watchdog/5-38                      652      branches                  #  441.435 M/sec
      watchdog/6-44                      652      branches                  #  437.290 M/sec
      watchdog/7-50                      652      branches                  #  221.467 M/sec
          vmstat-23127                 8,960      branch-misses             #    1.66% of all branches
      irqbalance-2780                  3,047      branch-misses             #    1.16% of all branches
            perf-24165                 2,876      branch-misses             #    0.77% of all branches
            sshd-23111                 1,843      branch-misses             #    8.43% of all branches
        thermald-2841                  1,444      branch-misses             #    4.57% of all branches
            sshd-23058                 1,379      branch-misses             #   12.91% of all branches
   kworker/u16:1-18249                   982      branch-misses             #   12.44% of all branches
       rcu_sched-8                       893      branch-misses             #   10.27% of all branches
   kworker/u16:2-23146                   578      branch-misses             #   14.10% of all branches
     kworker/0:2-19991                   376      branch-misses             #    6.53% of all branches
           gmain-2700                    280      branch-misses             #   10.61% of all branches
     kworker/6:0-17528                   196      branch-misses             #    8.84% of all branches
     kworker/4:1-15354                   187      branch-misses             #    6.79% of all branches
     kworker/5:2-31362                   123      branch-misses             #   10.87% of all branches
      watchdog/0-11                       95      branch-misses             #   14.57% of all branches
      watchdog/4-32                       89      branch-misses             #   13.65% of all branches
     kworker/3:2-12870                    80      branch-misses             #    7.40% of all branches
      watchdog/3-26                       61      branch-misses             #    9.36% of all branches
    kworker/4:1H-1887                     60      branch-misses             #    8.28% of all branches
      watchdog/2-20                       52      branch-misses             #    7.98% of all branches
     ksoftirqd/0-7                        47      branch-misses             #    6.65% of all branches
      watchdog/1-14                       46      branch-misses             #    7.06% of all branches
      watchdog/7-50                       13      branch-misses             #    1.99% of all branches
      watchdog/5-38                        8      branch-misses             #    1.23% of all branches
      watchdog/6-44                        7      branch-misses             #    1.07% of all branches

       3.695150786 seconds time elapsed

root@skl:/tmp# perf stat --per-thread -M IPC,CPI
^C

 Performance counter stats for 'system wide':

          vmstat-23127             2,000,783      inst_retired.any          #      1.5 IPC
        thermald-2841              1,472,670      inst_retired.any          #      1.3 IPC
            sshd-23111               977,374      inst_retired.any          #      1.2 IPC
            perf-24163               483,779      inst_retired.any          #      0.2 IPC
           gmain-2700                341,213      inst_retired.any          #      0.9 IPC
            sshd-23058               148,891      inst_retired.any          #      0.8 IPC
    rtkit-daemon-3288                 71,210      inst_retired.any          #      0.7 IPC
   kworker/u16:1-18249                39,562      inst_retired.any          #      0.3 IPC
       rcu_sched-8                    14,474      inst_retired.any          #      0.8 IPC
     kworker/0:2-19991                 7,659      inst_retired.any          #      0.2 IPC
     kworker/4:1-15354                 6,714      inst_retired.any          #      0.8 IPC
    rtkit-daemon-3289                  4,839      inst_retired.any          #      0.3 IPC
     kworker/6:0-17528                 3,321      inst_retired.any          #      0.6 IPC
     kworker/5:2-31362                 3,215      inst_retired.any          #      0.5 IPC
     kworker/7:2-23145                 3,173      inst_retired.any          #      0.7 IPC
    kworker/4:1H-1887                  1,719      inst_retired.any          #      0.3 IPC
      watchdog/0-11                    1,479      inst_retired.any          #      0.3 IPC
      watchdog/1-14                    1,479      inst_retired.any          #      0.3 IPC
      watchdog/2-20                    1,479      inst_retired.any          #      0.4 IPC
      watchdog/3-26                    1,479      inst_retired.any          #      0.4 IPC
      watchdog/4-32                    1,479      inst_retired.any          #      0.3 IPC
      watchdog/5-38                    1,479      inst_retired.any          #      0.3 IPC
      watchdog/6-44                    1,479      inst_retired.any          #      0.7 IPC
      watchdog/7-50                    1,479      inst_retired.any          #      0.7 IPC
   kworker/u16:2-23146                 1,408      inst_retired.any          #      0.5 IPC
            perf-24163             2,249,872      cpu_clk_unhalted.thread
          vmstat-23127             1,352,455      cpu_clk_unhalted.thread
        thermald-2841              1,161,140      cpu_clk_unhalted.thread
            sshd-23111               807,827      cpu_clk_unhalted.thread
           gmain-2700                375,535      cpu_clk_unhalted.thread
            sshd-23058               194,071      cpu_clk_unhalted.thread
   kworker/u16:1-18249               114,306      cpu_clk_unhalted.thread
    rtkit-daemon-3288                103,547      cpu_clk_unhalted.thread
     kworker/0:2-19991                46,550      cpu_clk_unhalted.thread
       rcu_sched-8                    18,855      cpu_clk_unhalted.thread
    rtkit-daemon-3289                 17,549      cpu_clk_unhalted.thread
     kworker/4:1-15354                 8,812      cpu_clk_unhalted.thread
     kworker/5:2-31362                 6,812      cpu_clk_unhalted.thread
    kworker/4:1H-1887                  5,270      cpu_clk_unhalted.thread
     kworker/6:0-17528                 5,111      cpu_clk_unhalted.thread
     kworker/7:2-23145                 4,667      cpu_clk_unhalted.thread
      watchdog/0-11                    4,663      cpu_clk_unhalted.thread
      watchdog/1-14                    4,663      cpu_clk_unhalted.thread
      watchdog/4-32                    4,626      cpu_clk_unhalted.thread
      watchdog/5-38                    4,403      cpu_clk_unhalted.thread
      watchdog/3-26                    3,936      cpu_clk_unhalted.thread
      watchdog/2-20                    3,850      cpu_clk_unhalted.thread
   kworker/u16:2-23146                 2,654      cpu_clk_unhalted.thread
      watchdog/6-44                    2,017      cpu_clk_unhalted.thread
      watchdog/7-50                    2,017      cpu_clk_unhalted.thread
          vmstat-23127             2,000,783      inst_retired.any          #      0.7 CPI
        thermald-2841              1,472,670      inst_retired.any          #      0.8 CPI
            sshd-23111               977,374      inst_retired.any          #      0.8 CPI
            perf-24163               495,037      inst_retired.any          #      4.7 CPI
           gmain-2700                341,213      inst_retired.any          #      1.1 CPI
            sshd-23058               148,891      inst_retired.any          #      1.3 CPI
    rtkit-daemon-3288                 71,210      inst_retired.any          #      1.5 CPI
   kworker/u16:1-18249                39,562      inst_retired.any          #      2.9 CPI
       rcu_sched-8                    14,474      inst_retired.any          #      1.3 CPI
     kworker/0:2-19991                 7,659      inst_retired.any          #      6.1 CPI
     kworker/4:1-15354                 6,714      inst_retired.any          #      1.3 CPI
    rtkit-daemon-3289                  4,839      inst_retired.any          #      3.6 CPI
     kworker/6:0-17528                 3,321      inst_retired.any          #      1.5 CPI
     kworker/5:2-31362                 3,215      inst_retired.any          #      2.1 CPI
     kworker/7:2-23145                 3,173      inst_retired.any          #      1.5 CPI
    kworker/4:1H-1887                  1,719      inst_retired.any          #      3.1 CPI
      watchdog/0-11                    1,479      inst_retired.any          #      3.2 CPI
      watchdog/1-14                    1,479      inst_retired.any          #      3.2 CPI
      watchdog/2-20                    1,479      inst_retired.any          #      2.6 CPI
      watchdog/3-26                    1,479      inst_retired.any          #      2.7 CPI
      watchdog/4-32                    1,479      inst_retired.any          #      3.1 CPI
      watchdog/5-38                    1,479      inst_retired.any          #      3.0 CPI
      watchdog/6-44                    1,479      inst_retired.any          #      1.4 CPI
      watchdog/7-50                    1,479      inst_retired.any          #      1.4 CPI
   kworker/u16:2-23146                 1,408      inst_retired.any          #      1.9 CPI
            perf-24163             2,302,323      cycles
          vmstat-23127             1,352,455      cycles
        thermald-2841              1,161,140      cycles
            sshd-23111               807,827      cycles
           gmain-2700                375,535      cycles
            sshd-23058               194,071      cycles
   kworker/u16:1-18249               114,306      cycles
    rtkit-daemon-3288                103,547      cycles
     kworker/0:2-19991                46,550      cycles
       rcu_sched-8                    18,855      cycles
    rtkit-daemon-3289                 17,549      cycles
     kworker/4:1-15354                 8,812      cycles
     kworker/5:2-31362                 6,812      cycles
    kworker/4:1H-1887                  5,270      cycles
     kworker/6:0-17528                 5,111      cycles
     kworker/7:2-23145                 4,667      cycles
      watchdog/0-11                    4,663      cycles
      watchdog/1-14                    4,663      cycles
      watchdog/4-32                    4,626      cycles
      watchdog/5-38                    4,403      cycles
      watchdog/3-26                    3,936      cycles
      watchdog/2-20                    3,850      cycles
   kworker/u16:2-23146                 2,654      cycles
      watchdog/6-44                    2,017      cycles
      watchdog/7-50                    2,017      cycles

       2.175726600 seconds time elapsed

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512482591-4646-12-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-12-27 12:15:47 -03:00
Jin Yao 56739444d8 perf stat: Allocate shadow stats buffer for threads 
After perf_evlist__create_maps() being executed, we can get all threads
from /proc. And via thread_map__nr(), we can also get the number of
threads.

With the number of threads, the patch allocates a buffer which will
record the shadow stats for these threads.

The buffer pointer is saved in stat_config.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512482591-4646-8-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-12-27 12:15:45 -03:00
Jin Yao 6a1e2c5c26 perf stat: Remove a set of shadow stats static variables 
In previous patches, we have reconstructed the code and let it not
access the static variables directly.

This patch removes these static variables.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512482591-4646-7-git-send-email-yao.jin@linux.intel.com
[ Rename 'stat' variables to 'st' to build on centos:{5,6} and others where it shadows a global declaration ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-12-27 12:15:44 -03:00
Jin Yao e0128b30db perf stat: Print per-thread shadow stats 
The function perf_stat__print_shadow_stats() is called to print the
shadow stats on a set of static variables.

But the static variables are the limitations to support
per-thread shadow stats.

This patch lets the perf_stat__print_shadow_stats() support
to print the shadow stats from a input parameter 'st'.

It will not directly get value from static variable. Instead,
it now uses runtime_stat_avg() and runtime_stat_n() to get and
compute the values.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512482591-4646-6-git-send-email-yao.jin@linux.intel.com
[ Rename 'stat' variables to 'st' to build on centos:{5,6} and others where it shadows a global declaration ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-12-27 12:15:44 -03:00
Jin Yao 1fcd03946b perf stat: Update per-thread shadow stats 
The functions perf_stat__update_shadow_stats() is called to update the
shadow stats on a set of static variables.

But the static variables are the limitations to be extended to support
per-thread shadow stats.

This patch lets the perf_stat__update_shadow_stats() support to update
the shadow stats on a input parameter 'st' and uses
update_runtime_stat() to update the stats. It will not directly update
the static variables as before.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512482591-4646-5-git-send-email-yao.jin@linux.intel.com
[ Rename 'stat' variables to 'st' to build on centos:{5,6} and others where it shadows a global declaration ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-12-27 12:15:43 -03:00
Jin Yao 8efb2df128 perf stat: Create the runtime_stat init/exit function 
It mainly initializes and releases the rblist which is defined in struct
runtime_stat.

For the original rblist 'runtime_saved_values', it's still kept there
for keeping the patch bisectable.

The rblist 'runtime_saved_values' will be removed in later patch at
switching time.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512482591-4646-4-git-send-email-yao.jin@linux.intel.com
[ Rename 'stat' variables to 'st' to build on centos:{5,6} and others where it shadows a global declaration ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-12-27 12:15:43 -03:00
Jin Yao e5fcc2abc3 perf stat: Define a structure for per-thread shadow stats 
Perf has a set of static variables to record the runtime shadow metrics
stats.

While if we want to record the runtime shadow stats for per-thread, it
will be the limitation. This patch creates a structure and the next
patches will use this structure to update the runtime shadow stats for
per-thread.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512482591-4646-2-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-12-27 12:15:42 -03:00
Ingo Molnar 15bcdc9477 Merge branch 'linus' into perf/core, to fix conflicts 
Conflicts:
	tools/perf/arch/arm/annotate/instructions.c
	tools/perf/arch/arm64/annotate/instructions.c
	tools/perf/arch/powerpc/annotate/instructions.c
	tools/perf/arch/s390/annotate/instructions.c
	tools/perf/arch/x86/tests/intel-cqm.c
	tools/perf/ui/tui/progress.c
	tools/perf/util/zlib.c

Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2017-11-07 10:30:18 +01:00
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-11-02 11:10:55 +01:00
Jiri Olsa 54830dd0c3 perf stat: Move the shadow stats scale computation in perf_stat__update_shadow_stats 
Move the shadow stats scale computation to the
perf_stat__update_shadow_stats() function, so it's centralized and we
don't forget to do it. It also saves few lines of code.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Changbin Du <changbin.du@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-htg7mmyxv6pcrf57qyo6msid@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-10-30 13:40:33 -03:00
Andi Kleen b18f3e3650 perf stat: Support JSON metrics in perf stat 
Add generic support for standalone metrics specified in JSON files to
perf stat. A metric is a formula that uses multiple events to compute a
higher level result (e.g. IPC).

Previously metrics were always tied to an event and automatically
enabled with that event. But now change it that we can have standalone
metrics. They are in the same JSON data structure as events, but don't
have an event name.

We also allow to organize the metrics in metric groups, which allows a
short cut to select several related metrics at once.

Add a new -M / --metrics option to perf stat that adds the metrics or
metric groups specified.

Add the core code to manage and parse the metric groups. They are
collected from the JSON data structures into a separate rblist.  When
computing shadow values look for metrics in that list.  Then they are
computed using the existing saved values infrastructure in stat-shadow.c

The actual JSON metrics are in a separate pull request.

  % perf stat -M Summary --metric-only -a sleep 1

   Performance counter stats for 'system wide':

  Instructions   CLKS          CPU_Utilization  GFLOPs   SMT_2T_Utilization   Kernel_Utilization
  317614222.0    1392930775.0  0.0              0.0      0.2                  0.1

       1.001497549 seconds time elapsed

  % perf stat -M GFLOPs flops

   Performance counter stats for 'flops':

     3,999,541,471  fp_comp_ops_exe.sse_scalar_single #  1.2 GFLOPs   (66.65%)
                14  fp_comp_ops_exe.sse_scalar_double                 (66.65%)
                 0  fp_comp_ops_exe.sse_packed_double                 (66.67%)
                 0  fp_comp_ops_exe.sse_packed_single                 (66.70%)
                 0  simd_fp_256.packed_double                         (66.70%)
                 0  simd_fp_256.packed_single                         (66.67%)
                 0  duration_time

       3.238372845 seconds time elapsed

v2: Add missing header file
v3: Move find_map to pmu.c

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170831194036.30146-7-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-09-13 09:49:13 -03:00
Jiri Olsa f7794d5254 perf evsel: Add read_counter() 
Add perf_evsel__read_counter() to read single or group counter. After
calling this function the counter's evsel::counts struct is filled with
values for the counter and member of its group if there are any.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20170726120206.9099-3-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-07-26 14:21:59 -03:00
Kan Liang daefd0bc0b perf stat: Add support to measure SMI cost 
Implementing a new --smi-cost mode in perf stat to measure SMI cost.

During the measurement, the /sys/device/cpu/freeze_on_smi will be set.

The measurement can be done with one counter (unhalted core cycles), and
two free running MSR counters (IA32_APERF and SMI_COUNT).

In practice, the percentages of SMI core cycles should be more useful
than absolute value. So the output will be the percentage of SMI core
cycles and SMI#. metric_only will be set by default.

SMI cycles% = (aperf - unhalted core cycles) / aperf

Here is an example output.

 Performance counter stats for 'sudo echo ':

SMI cycles%          SMI#
    0.1%              1

       0.010858678 seconds time elapsed

Users who wants to get the actual value can apply additional
--no-metric-only.

Signed-off-by: Kan Liang <Kan.liang@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Elliott <elliott@hpe.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1495825538-5230-3-git-send-email-kan.liang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-06-21 11:35:35 -03:00
Andi Kleen 37932c188e perf stat: Output JSON MetricExpr metric 
Add generic infrastructure to perf stat to output ratios for
"MetricExpr" entries in the event lists. Many events are more useful as
ratios than in raw form, typically some count in relation to total
ticks.

Transfer the MetricExpr information from the alias to the evsel.

We mark the events that need to be collected for MetricExpr, and also
link the events using them with a pointer. The code is careful to always
prefer the right event in the same group to minimize multiplexing
errors. At the moment only a single relation is supported.

Then add a rblist to the stat shadow code that remembers stats based on
the cpu and context.

Then finally update and retrieve and print these values similarly to the
existing hardcoded perf metrics. We use the simple expression parser
added earlier to evaluate the expression.

Normally we just output the result without further commentary, but for
--metric-only this would lead to empty columns. So for this case use the
original event as description.

There is no attempt to automatically add the MetricExpr event, if it is
missing, however we suggest it to the user, because the user tool
doesn't have enough information to reliably construct a group that is
guaranteed to schedule. So we leave that to the user.

  % perf stat -a -I 1000 -e '{unc_p_clockticks,unc_p_freq_max_os_cycles}'
       1.000147889        800,085,181      unc_p_clockticks
       1.000147889         93,126,241      unc_p_freq_max_os_cycles  #     11.6
       2.000448381        800,218,217      unc_p_clockticks
       2.000448381        142,516,095      unc_p_freq_max_os_cycles  #     17.8
       3.000639852        800,243,057      unc_p_clockticks
       3.000639852        162,292,689      unc_p_freq_max_os_cycles  #     20.3

  % perf stat -a -I 1000 -e '{unc_p_clockticks,unc_p_freq_max_os_cycles}' --metric-only
  #    time         freq_max_os_cycles %
       1.000127077      0.9
       2.000301436      0.7
       3.000456379      0.0

v2: Change from DivideBy to MetricExpr
v3: Use expr__ prefix.  Support more than one other event.
v4: Update description
v5: Only print warning message once for multiple PMUs.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170320201711.14142-11-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-03-23 11:42:30 -03:00
Andi Kleen 239bd47f83 perf stat: Add computation of TopDown formulas 
Implement the TopDown formulas in 'perf stat'. The topdown basic metrics
reported by the kernel are collected, and the formulas are computed and
output as normal metrics.

See the kernel commit exporting the events for details on the used
metrics.

Committer note:

Output example:

  # perf stat --topdown -a usleep 1

   Performance counter stats for 'system wide':

             retiring     bad speculation   frontend bound   backend bound
  S0-C0    2     23.8%       11.6%            28.3%           36.3%
  S0-C1    2     16.2%       15.7%            36.5%           31.6%

         0.000579956 seconds time elapsed
  #

v2: Always print all metrics, only use thresholds for coloring.
v3: Mark retiring over threshold green, not red.
v4: Only print one decimal digit
    Fix color printing of one metric
v5: Avoid printing -0.0
v6: Remove extra frontend event lookup

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1464119559-17203-2-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-06-06 17:04:16 -03:00
Andi Kleen fb4605ba47 perf stat: Check for frontend stalled for metrics 
Add an extra check for frontend stalled in the metrics.  This avoids an
extra column for the --metric-only case when the CPU does not support
frontend stalled.

v2: Add separate init function

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1456858672-21594-8-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-03-03 11:10:40 -03:00
Andi Kleen 140aeadc1f perf stat: Abstract stat metrics printing 
Abstract the printing of shadow metrics. Instead of every metric calling
fprintf directly and taking care of indentation, use two call backs: one
to print metrics and another to start a new line.

This will allow adding metrics to CSV mode and also using them for other
purposes.

The computation of padding is now done in the central callback, instead
of every metric doing it manually.  This makes it easier to add new
metrics.

v2: Refactor functions, printout now does more. Move
shadow printing. Improve fallback callbacks. Don't
use void * callback data.
v3: Remove unnecessary hunk. Add typedef for new_line
v4: Remove unnecessary hunk. Don't print metrics for CSV/interval
mode yet.  Move printout change to separate patch.
v5: Fix bisect bugs. Avoid bogus frontend cycles printing.
Fix indentation in different aggregation modes.
v6: Delay newline handling

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1454173616-17710-2-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-02-16 17:13:00 -03:00
Jiri Olsa 86a2cf3123 perf stat: Making several helper functions static 
There's no need for the following functions to be global:

  perf_evsel__reset_stat_priv
  perf_evsel__alloc_stat_priv
  perf_evsel__free_stat_priv
  perf_evsel__alloc_prev_raw_counts
  perf_evsel__free_prev_raw_counts
  perf_evsel__alloc_stats

They all ended up in util/stat.c, and they no longer need to be called
from outside this object.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1453290995-18485-5-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-01-26 11:52:43 -03:00
Jiri Olsa e08a4564e2 perf tools: Add stat events fprintf functions 
Introducing the following functions to display the stat events for raw
dump.

  perf_event__fprintf_stat
  perf_event__fprintf_stat_round
  perf_event__fprintf_stat_config

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445784728-21732-20-git-send-email-jolsa@kernel.org
[ s/stat/st/g and s/round/rd/g parameters to fix 'already defined' build error with older distros (e.g. RHEL6.7) ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-12-17 15:09:38 -03:00
Jiri Olsa 0ea0e35586 perf tools: Add stat event read function 
Introducing the perf_event__process_stat_event function to process a
'struct perf_stat' data from a stat event.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445784728-21732-17-git-send-email-jolsa@kernel.org
[ Renamed 'stat' parameter to 'st' to fix 'already defined' build error with older distros (e.g. RHEL6.7) ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-12-17 14:55:43 -03:00
Jiri Olsa 208df99ed0 perf stat: Add AGGR_UNSET mode 
Adding AGGR_UNSET mode, so we could distinguish unset aggr_mode in
following patches.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1444992092-17897-30-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-10-19 18:02:07 -03:00
Jiri Olsa 581cc8a2a2 perf stat: Rename perf_stat struct into perf_stat_evsel 
It's used as the perf_evsel::priv data, so the name suits better. Also
we'll need the perf_stat name free for more generic struct.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1444992092-17897-29-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-10-19 18:01:05 -03:00
Jiri Olsa d809560b36 perf stat: Move perf_counts struct and functions into separate object 
Moving 'struct perf_counts' and associated functions into separate
object, so we could remove stat.c object dependency from python build.

It makes the python code to build properly, because it fails to load due
to missing stat-shadow.c object dependency if some patches from Kan
Liang are applied.

So apply this one, then Kan's.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20150807105103.GB8624@krava.brq.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-08-08 14:16:49 -03:00
Jiri Olsa f80010eb23 perf stat: Move counter processing code into stat object 
Moving counter processing code into stat object as
perf_stat__process_counter.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1437481927-29538-8-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-08-06 16:08:16 -03:00
Jiri Olsa ec0d3d1fd2 perf stat: Move 'interval' into struct perf_stat_config 
Moving 'interval' into struct perf_stat_config. The point is to
centralize the base stat config so it could be used localy together with
other stat routines in other parts of perf code.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1437481927-29538-6-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-08-06 16:03:04 -03:00
Jiri Olsa 5821522e94 perf stat: Move 'output' into struct perf_stat_config 
Moving 'output' into struct perf_stat_config. The point is to centralize
the base stat config so it could be used localy together with other stat
routines in other parts of perf code.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1437481927-29538-5-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-08-06 16:02:51 -03:00
Jiri Olsa 711a572ea8 perf stat: Move 'scale' into struct perf_stat_config 
Moving 'scale' into struct perf_stat_config. The point is to centralize
the base stat config so it could be used localy together with other stat
routines in other parts of perf code.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1437481927-29538-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-08-06 16:02:39 -03:00
Jiri Olsa 421a50f3fa perf stat: Introduce struct perf_stat_config 
Moving 'aggr_mode' into new struct. The point is to centralize the base
stat config so it could be used localy together with other stat routines
in other parts of perf code.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1437481927-29538-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-08-06 16:02:29 -03:00
Jiri Olsa 32b8af82e3 perf stat: Introduce --per-thread option 
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.

Adding --per-tasks option to print values per task.

  $ perf stat  -e cycles,instructions --per-thread -p 30190,30242
  ^C
   Performance counter stats for process id '30190,30242':

               cat-30190                     0      cycles
               yes-30242         3,842,525,421      cycles
               cat-30190                     0      instructions
               yes-30242        10,370,817,010      instructions

         1.143155657 seconds time elapsed

Also works under interval mode:

  $ perf stat  -e cycles,instructions --per-thread -p 30190,30242 -I 1000
  #           time             comm-pid                  counts unit events
       1.000073435              cat-30190                89,058      cycles
       1.000073435              yes-30242         3,360,786,902      cycles                     (100.00%)
       1.000073435              cat-30190                14,066      instructions
       1.000073435              yes-30242         9,069,937,462      instructions
       2.000204830              cat-30190                     0      cycles
       2.000204830              yes-30242         3,351,667,626      cycles
       2.000204830              cat-30190                     0      instructions
       2.000204830              yes-30242         9,045,796,885      instructions
  ^C     2.771286639              cat-30190                     0      cycles
       2.771286639              yes-30242         2,593,884,166      cycles
       2.771286639              cat-30190                     0      instructions
       2.771286639              yes-30242         7,001,171,191      instructions

It works only with -t and -p options, otherwise following error is
printed:

  $ perf stat  -e cycles --per-thread  -I 1000 ls
  The --per-thread option is only available when monitoring via -p -t options.
      -p, --pid <pid>       stat events on existing process id
      -t, --tid <tid>       stat events on existing thread id

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-26 12:05:04 -03:00
Jiri Olsa a7d0a102e4 perf stat: Introduce perf_evsel__alloc_stats function 
Move all stat allocation logic related to stat object under single
function. This way we can use it separately for stat object out of
evlist object.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-13-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-26 11:46:00 -03:00
Jiri Olsa 24e34f68e2 perf stat: Move perf_evlist__(alloc|free|reset)_stats into stat object 
Moving perf_evlist__(alloc|free|reset)_stats into stat object,
so it could be used in following patches.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-12-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-26 11:44:37 -03:00
Jiri Olsa a939512d10 perf stat: Move perf_evsel__(alloc|free)_prev_raw_counts into stat object 
Moving perf_evsel__(alloc|free)_prev_raw_counts into stat object, so it
could be used in following patches.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-11-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-26 11:34:43 -03:00
Jiri Olsa 9689edfabc perf stat: Move perf_evsel__(alloc|free|reset)_stat_priv into stat object 
Moving perf_evsel__(alloc|free|reset)_stat_priv into stat object, so it
could be used outside stat command in following patches.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-10-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-26 11:26:44 -03:00
Jiri Olsa 57b289159a perf stat: Rename struct perf_counts::cpu member to values 
Renaming 'struct xyarray *cpu' pointer to more fitting/generic values,
because now we store both cpu and thread values.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-8-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-26 11:25:03 -03:00
Jiri Olsa a6fa003855 perf stat: Make stats work over the thread dimension 
Now that we have space for thread dimension counts, let's store it.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-7-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-26 11:20:02 -03:00
Jiri Olsa a8e02324df perf stat: Use xyarray for cpu evsel counts 
Switching single dimensional array of 'struct perf_counts_values'
with xyarray object, so we could store thread dimension counts.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-6-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-26 11:19:19 -03:00
Jiri Olsa 1ac77e1ce8 perf stat: Introduce perf_counts function 
Introducing perf_counts function, that returns
'struct perf_counts_values' pointer for given cpu.

Also moving perf_counts* structures into stat.h.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-5-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-26 11:11:26 -03:00
Jiri Olsa 9df38e82e2 perf stat: Introduce perf_counts__(new|delete|reset) functions 
Move 'struct perf_counts' allocation|free|reset code into separate
functions.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1434269985-521-13-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-16 10:34:41 -03:00
Jiri Olsa a9a3a4d92d perf tools: Move perf_evsel__(alloc|free|reset)_counts into stat object 
It's stat specific. Updating python build objects with stat.c.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1434269985-521-12-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-16 10:34:40 -03:00
Jiri Olsa f87027b968 perf stat: Move shadow stat counters into separate object 
Separating shadow counters code into separate object as a cleanup, but
mainly for upcomming changes, so could use it from script command
context.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1433341559-31848-10-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-08 10:30:31 -03:00
Jiri Olsa 4c358d5cf3 perf stat: Replace transaction event possition check with id check 
Using perf_stat::id to check for transaction events, instead of current
position based way.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1433341559-31848-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-08 10:30:30 -03:00
Jiri Olsa e2f56da1d6 perf stat: Add id into perf_stat struct 
We need fast way to identify evsel as transaction event for shadow
counters computation. Currently we are using possition (in evlist) based
way.

Adding 'id' into 'struct perf_stat' so it can carry transaction event ID
and we can use it for shadow counters computations.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20150604135055.GB23625@krava.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-06-08 10:30:30 -03:00
Borislav Petkov d944c4eebc tools: Consolidate types.h 
Combine all definitions into a common tools/include/linux/types.h and
kill the wild growth elsewhere. Move DECLARE_BITMAP to its proper
bitmap.h header.

Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Link: http://lkml.kernel.org/n/tip-azczs7qcv6h9xek9od10hiv2@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
 2014-05-01 21:22:39 +02:00
David Ahern ffe4f3c0d1 perf stats: Add max and min stats 
Need an initialization function to set min to -1 to
differentiate from an actual min of 0.

Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Runzhen Wang <runzhen@linux.vnet.ibm.com>
Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1375473947-64285-3-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2013-08-07 17:35:26 -03:00
Xiao Guangrong 0007eceace perf stat: Move stats related code to util/stat.c 
Then, the code can be shared between kvm events and perf stat.

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
[ Dong Hao <haodong@linux.vnet.ibm.com>: rebase it on acme's git tree ]
Signed-off-by: Dong Hao <haodong@linux.vnet.ibm.com>
Cc: Avi Kivity <avi@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: kvm@vger.kernel.org
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Runzhen Wang <runzhen@linux.vnet.ibm.com>
Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1347870675-31495-3-git-send-email-haodong@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2012-09-17 13:10:03 -03:00