diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/Documentation/perf-lock.txt | 4 | ||||
| -rw-r--r-- | tools/perf/builtin-lock.c | 22 |
2 files changed, 24 insertions, 2 deletions
diff --git a/tools/perf/Documentation/perf-lock.txt b/tools/perf/Documentation/perf-lock.txt index ae78e04346bd..8f4e34f924d5 100644 --- a/tools/perf/Documentation/perf-lock.txt +++ b/tools/perf/Documentation/perf-lock.txt @@ -119,6 +119,10 @@ CONTENTION OPTIONS and users can customize that using this. Possible values: contended, wait_total, wait_max, wait_min, avg_wait. +-t:: +--threads:: + Show per-thread lock contention stat + SEE ALSO -------- 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) }; |