Commit-ID: 3cb63d527f76e25dbccce4f577f21aecfa2abac7 Gitweb: http://git.kernel.org/tip/3cb63d527f76e25dbccce4f577f21aecfa2abac7 Author: Mike Galbraith <efault@xxxxxx> AuthorDate: Fri, 11 Sep 2009 12:01:17 +0200 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Tue, 15 Sep 2009 16:01:02 +0200 sched: Complete buddy switches Add a NEXT_BUDDY feature flag to aid in debugging. Signed-off-by: Mike Galbraith <efault@xxxxxx> Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- kernel/sched_fair.c | 3 ++- kernel/sched_features.h | 1 + 2 files changed, 3 insertions(+), 1 deletions(-) diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index cea5b82..4f6356e 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -1501,7 +1501,8 @@ 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); - set_next_buddy(pse); + if (sched_feat(NEXT_BUDDY)) + set_next_buddy(pse); /* * We can come here with TIF_NEED_RESCHED already set from new task diff --git a/kernel/sched_features.h b/kernel/sched_features.h index 07c8250..6174c12 100644 --- a/kernel/sched_features.h +++ b/kernel/sched_features.h @@ -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) -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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