diff options
| author | Namhyung Kim <namhyung@kernel.org> | 2022-07-25 21:31:24 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-07-25 23:58:42 +0300 |
| commit | 1ab55323c5ef379e96ff6b225cd95e80fef4939a (patch) | |
| tree | 67c30468ec62db2ac8b5af35c9e1c4272fefc6a0 /tools/perf/builtin-lock.c | |
| parent | 79079f21f50a501f03ee237be6efaa0e533f9f87 (diff) | |
| download | linux-1ab55323c5ef379e96ff6b225cd95e80fef4939a.tar.xz | |
perf lock: Support -t option for 'contention' subcommand
Like perf lock report, it can report lock contention stat of each task.
$ perf lock contention -t
contended total wait max wait avg wait pid comm
5 945.20 us 902.08 us 189.04 us 316167 EventManager_De
33 98.17 us 6.78 us 2.97 us 766063 kworker/0:1-get
7 92.47 us 61.26 us 13.21 us 316170 EventManager_De
14 76.31 us 12.87 us 5.45 us 12949 timedcall
24 76.15 us 12.27 us 3.17 us 767992 sched-pipe
15 75.62 us 11.93 us 5.04 us 15127 switchto-defaul
24 71.84 us 5.59 us 2.99 us 629168 kworker/u513:2-
17 67.41 us 7.94 us 3.96 us 13504 coroner-
1 59.56 us 59.56 us 59.56 us 316165 EventManager_De
14 56.21 us 6.89 us 4.01 us 0 swapper
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20220725183124.368304-6-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-lock.c')
| -rw-r--r-- | tools/perf/builtin-lock.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index ad3b191db2e7..041801d8b6ac 100644 --- a/tools/perf/builtin-lock.c +++ b/tools/perf/builtin-lock.c @@ -1560,7 +1560,10 @@ static void print_contention_result(void) list_for_each_entry(key, &lock_keys, list) pr_info("%*s ", key->len, key->header); - pr_info(" %10s %s\n\n", "type", "caller"); + if (show_thread_stats) + pr_info(" %10s %s\n\n", "pid", "comm"); + else + pr_info(" %10s %s\n\n", "type", "caller"); bad = total = 0; while ((st = pop_from_result())) { @@ -1573,6 +1576,16 @@ static void print_contention_result(void) pr_info(" "); } + if (show_thread_stats) { + struct thread *t; + int pid = st->addr; + + /* st->addr contains tid of thread */ + t = perf_session__findnew(session, pid); + pr_info(" %10d %s\n", pid, thread__comm_str(t)); + continue; + } + pr_info(" %10s %s\n", get_type_str(st), st->name); } @@ -1703,7 +1716,10 @@ static int __cmd_contention(void) if (select_key(true)) goto out_delete; - aggr_mode = LOCK_AGGR_CALLER; + if (show_thread_stats) + aggr_mode = LOCK_AGGR_TASK; + else + aggr_mode = LOCK_AGGR_CALLER; err = perf_session__process_events(session); if (err) @@ -1843,6 +1859,8 @@ int cmd_lock(int argc, const char **argv) "key for sorting (contended / wait_total / wait_max / wait_min / avg_wait)"), OPT_STRING('F', "field", &output_fields, "contended,wait_total,wait_max,avg_wait", "output fields (contended / wait_total / wait_max / wait_min / avg_wait)"), + OPT_BOOLEAN('t', "threads", &show_thread_stats, + "show per-thread lock stats"), OPT_PARENT(lock_options) }; |