Commit dca58d06 authored Jul 30, 2014 by Srivatsa Vaddagiri Committed by Steve Muckle Aug 12, 2014

sched: window-stats: update task demand on tick



A task can execute on a cpu for a long time without being preempted
or migrated. In such case, its demand can become outdated for a long
time. Prevent that from happening by updating demand of currently
running task during scheduler tick.

Change-Id: I321917b4590635c0a612560e3a1baf1e6921e792
CRs-Fixed: 698662
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>

parent fa15bd99

kernel/sched/core.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -3758,6 +3758,7 @@ void scheduler_tick(void)
		update_rq_clock(rq);
		update_cpu_load_active(rq);
		curr->sched_class->task_tick(rq, curr, 0);
		update_task_ravg(rq->curr, rq, TASK_UPDATE, sched_clock(), NULL);
		raw_spin_unlock(&rq->lock);

		perf_event_task_tick();