kernel/tools/perf/util/stat.h, branch linux-4.17.y

perf stat: Make function perf_stat_evsel_id_init static

2018-03-16T16:56:17Z

Function perf_stat_evsel_id_init() has global linkage but is only used in util/stat.c. Make it static. Signed-off-by: Thomas Richter Cc: Heiko Carstens Cc: Hendrik Brueckner Cc: Martin Schwidefsky Link: http://lkml.kernel.org/r/20180312103807.45069-2-tmricht@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

perf stat: Add support to print counts after a period of time

2018-02-16T13:18:06Z

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(19afd10410957), 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 Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Alexander Shishkin Cc: David Ahern Cc: Kan Liang Cc: Milian Wolff Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wang Nan Link: http://lkml.kernel.org/r/1517217923-8302-3-git-send-email-ufo19890607@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf stat: Add support to print counts for fixed times

2018-02-16T13:09:24Z

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 Acked-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Alexander Shishkin Cc: David Ahern Cc: Kan Liang Cc: Milian Wolff Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wang Nan Link: http://lkml.kernel.org/r/1517217923-8302-2-git-send-email-ufo19890607@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf stat: Resort '--per-thread' result

2017-12-27T15:15:47Z

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 Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: Kan Liang Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1512482591-4646-12-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf stat: Allocate shadow stats buffer for threads

2017-12-27T15:15:45Z

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 Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: Kan Liang Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1512482591-4646-8-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf stat: Remove a set of shadow stats static variables

2017-12-27T15:15:44Z

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 Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: Kan Liang Cc: Peter Zijlstra 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

perf stat: Print per-thread shadow stats

2017-12-27T15:15:44Z

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 Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: Kan Liang Cc: Peter Zijlstra 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

perf stat: Update per-thread shadow stats

2017-12-27T15:15:43Z

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 Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: Kan Liang Cc: Peter Zijlstra 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

perf stat: Create the runtime_stat init/exit function

2017-12-27T15:15:43Z

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 Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: Kan Liang Cc: Peter Zijlstra 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

perf stat: Define a structure for per-thread shadow stats

2017-12-27T15:15:42Z

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 Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: Kan Liang Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1512482591-4646-2-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo