Commit 1596e297 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
Browse files

sched: symmetric sync vs avg_overlap 



Reinstate the weakening of the sync hint if set. This yields a more
symmetric usage of avg_overlap.

Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent d942fb6c

kernel/sched.c

+9 −3
Original line number Diff line number Diff line
@@ -2266,9 +2266,15 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state, int sync) 
	if (!sched_feat(SYNC_WAKEUPS))

		sync = 0;



	if (!sync && (current->se.avg_overlap < sysctl_sched_migration_cost &&

			    p->se.avg_overlap < sysctl_sched_migration_cost))

	if (!sync) {

		if (current->se.avg_overlap < sysctl_sched_migration_cost &&

			  p->se.avg_overlap < sysctl_sched_migration_cost)

			sync = 1;

	} else {

		if (current->se.avg_overlap >= sysctl_sched_migration_cost ||

			  p->se.avg_overlap >= sysctl_sched_migration_cost)

			sync = 0;

	}



#ifdef CONFIG_SMP

	if (sched_feat(LB_WAKEUP_UPDATE)) {