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-rw-r--r--tools/perf/builtin-sched.c25
1 files changed, 22 insertions, 3 deletions
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 3e003237c42f..2ce87ef5a3e6 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -116,6 +116,8 @@ static u64 sum_fluct;
116static u64 run_avg; 116static u64 run_avg;
117 117
118static unsigned long replay_repeat = 10; 118static unsigned long replay_repeat = 10;
119static unsigned long nr_timestamps;
120static unsigned long unordered_timestamps;
119 121
120#define TASK_STATE_TO_CHAR_STR "RSDTtZX" 122#define TASK_STATE_TO_CHAR_STR "RSDTtZX"
121 123
@@ -1109,8 +1111,11 @@ latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
1109 if (atom->state != THREAD_SLEEPING) 1111 if (atom->state != THREAD_SLEEPING)
1110 return; 1112 return;
1111 1113
1112 if (atom->sched_out_time > timestamp) 1114 nr_timestamps++;
1115 if (atom->sched_out_time > timestamp) {
1116 unordered_timestamps++;
1113 return; 1117 return;
1118 }
1114 1119
1115 atom->state = THREAD_WAIT_CPU; 1120 atom->state = THREAD_WAIT_CPU;
1116 atom->wake_up_time = timestamp; 1121 atom->wake_up_time = timestamp;
@@ -1130,6 +1135,11 @@ static void output_lat_thread(struct task_atoms *atom_list)
1130 1135
1131 if (!atom_list->nb_atoms) 1136 if (!atom_list->nb_atoms)
1132 return; 1137 return;
1138 /*
1139 * Ignore idle threads:
1140 */
1141 if (!atom_list->thread->pid)
1142 return;
1133 1143
1134 all_runtime += atom_list->total_runtime; 1144 all_runtime += atom_list->total_runtime;
1135 all_count += atom_list->nb_atoms; 1145 all_count += atom_list->nb_atoms;
@@ -1301,8 +1311,16 @@ static void __cmd_lat(void)
1301 } 1311 }
1302 1312
1303 printf("-----------------------------------------------------------------------------------\n"); 1313 printf("-----------------------------------------------------------------------------------\n");
1304 printf(" TOTAL: |%9.3f ms |%9Ld |\n", 1314 printf(" TOTAL: |%9.3f ms |%9Ld |",
1305 (double)all_runtime/1e6, all_count); 1315 (double)all_runtime/1e6, all_count);
1316
1317 if (unordered_timestamps && nr_timestamps) {
1318 printf(" INFO: %.2f%% unordered events.\n",
1319 (double)unordered_timestamps/(double)nr_timestamps*100.0);
1320 } else {
1321 printf("\n");
1322 }
1323
1306 printf("---------------------------------------------\n"); 1324 printf("---------------------------------------------\n");
1307} 1325}
1308 1326
@@ -1667,12 +1685,13 @@ static const char *record_args[] = {
1667 "-a", 1685 "-a",
1668 "-R", 1686 "-R",
1669 "-M", 1687 "-M",
1670 "-g", 1688 "-f",
1671 "-c", "1", 1689 "-c", "1",
1672 "-e", "sched:sched_switch:r", 1690 "-e", "sched:sched_switch:r",
1673 "-e", "sched:sched_stat_wait:r", 1691 "-e", "sched:sched_stat_wait:r",
1674 "-e", "sched:sched_stat_sleep:r", 1692 "-e", "sched:sched_stat_sleep:r",
1675 "-e", "sched:sched_stat_iowait:r", 1693 "-e", "sched:sched_stat_iowait:r",
1694 "-e", "sched:sched_stat_runtime:r",
1676 "-e", "sched:sched_process_exit:r", 1695 "-e", "sched:sched_process_exit:r",
1677 "-e", "sched:sched_process_fork:r", 1696 "-e", "sched:sched_process_fork:r",
1678 "-e", "sched:sched_wakeup:r", 1697 "-e", "sched:sched_wakeup:r",