diff options
| author | Joonwoo Park <joonwoop@codeaurora.org> | 2015-08-24 15:40:13 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 20:02:32 -0700 |
| commit | cee02f81686a7295bc93252ca572456017bc641a (patch) | |
| tree | 0c1d1f41aa02dd89b400b2ee2aecd6362adb354c /include/trace/events | |
| parent | b2e60dbe086b878dfb9a01ece93c2352e6bf8747 (diff) | |
sched: update sched_task_load trace event
Add best_cpu and latency field to sched_task_load trace event. The latency
field represents combined latency of update_task_ravg(), update_task_ravg()
and select_best_cpu() which is useful to analyze latency overhead of HMP
scheduler.
Change-Id: Ie6d777c918d0414d361d758490e3cd7d509f5837
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Diffstat (limited to 'include/trace/events')
| -rw-r--r-- | include/trace/events/sched.h | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index ae04e2095389..235b61182e64 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -116,9 +116,9 @@ TRACE_EVENT(sched_enq_deq_task, TRACE_EVENT(sched_task_load, TP_PROTO(struct task_struct *p, int boost, int reason, - int sync, int need_idle), + int sync, int need_idle, int best_cpu), - TP_ARGS(p, boost, reason, sync, need_idle), + TP_ARGS(p, boost, reason, sync, need_idle, best_cpu), TP_STRUCT__entry( __array( char, comm, TASK_COMM_LEN ) @@ -131,6 +131,8 @@ TRACE_EVENT(sched_task_load, __field( int, reason ) __field( int, sync ) __field( int, need_idle ) + __field( int, best_cpu ) + __field( u64, latency ) ), TP_fast_assign( @@ -144,12 +146,16 @@ TRACE_EVENT(sched_task_load, __entry->reason = reason; __entry->sync = sync; __entry->need_idle = need_idle; + __entry->best_cpu = best_cpu; + __entry->latency = p->state == TASK_WAKING ? + sched_clock() - p->ravg.mark_start : 0; ), - TP_printk("%d (%s): sum=%u, sum_scaled=%u, period=%u demand=%u boost=%d reason=%d sync=%d, need_idle=%d", + TP_printk("%d (%s): sum=%u, sum_scaled=%u, period=%u demand=%u boost=%d reason=%d sync=%d need_idle=%d best_cpu=%d latency=%llu", __entry->pid, __entry->comm, __entry->sum, __entry->sum_scaled, __entry->period, __entry->demand, - __entry->boost, __entry->reason, __entry->sync, __entry->need_idle) + __entry->boost, __entry->reason, __entry->sync, + __entry->need_idle, __entry->best_cpu, __entry->latency) ); TRACE_EVENT(sched_cpu_load, |