On 8/24/15 11:11 PM, Namhyung Kim wrote:
+static int perf_sched__read_runtime_events(struct perf_sched *sched)
+{
+ const struct perf_evsel_str_handler handlers[] = {
+ { "sched:sched_switch", process_sched_switch_event,
},
+ { "sched:sched_stat_runtime", process_sched_runtime_event, },
+ { "sched:sched_stat_sleep", process_sched_sleep_event, },
+ { "sched:sched_stat_wait", process_sched_wait_event, },
+ { "sched:sched_stat_iowait", process_sched_iowait_event, },
+ { "sched:sched_migrate_task", process_sched_migrate_task_event,
},
+ };
I like the concept (obviously since I have invested so much time in
other solutions). But... you cannot rely on the sched_stat tracepoints
being enabled. I believe it is a performance hit to have
CONFIG_SCHEDSTATS enabled and distributions (e.g., Fedora) do not have
it enabled.
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