Commit 3cb63d52 authored by Mike Galbraith's avatar Mike Galbraith Committed by Ingo Molnar
Browse files

sched: Complete buddy switches 



Add a NEXT_BUDDY feature flag to aid in debugging.

Signed-off-by: default avatarMike Galbraith <efault@gmx.de>
Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent e6b1b2c9

kernel/sched_fair.c

+2 −1
Original line number Diff line number Diff line
@@ -1501,6 +1501,7 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p, int sync) 
	 */

	if (sched_feat(LAST_BUDDY) && likely(se->on_rq && curr != rq->idle))

		set_last_buddy(se);

	if (sched_feat(NEXT_BUDDY))

		set_next_buddy(pse);



	/*

kernel/sched_features.h

+1 −0
Original line number Diff line number Diff line
@@ -14,5 +14,6 @@ SCHED_FEAT(LB_WAKEUP_UPDATE, 1) 
SCHED_FEAT(ASYM_EFF_LOAD, 1)

SCHED_FEAT(WAKEUP_SYNC, 0)

SCHED_FEAT(WAKEUP_OVERLAP, 0)

SCHED_FEAT(NEXT_BUDDY, 1)

SCHED_FEAT(LAST_BUDDY, 1)

SCHED_FEAT(OWNER_SPIN, 1)