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| author | Mike Galbraith <efault@gmx.de> | 2009-09-11 12:01:17 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-15 16:01:02 +0200 |
| commit | 3cb63d527f76e25dbccce4f577f21aecfa2abac7 (patch) | |
| tree | 2a4e940aa108b8c1f9a524dbf3294db88c5f9098 | |
| parent | e6b1b2c9c0461c4e0971ed905ce3cda6512ee82a (diff) | |
| download | blackbird-op-linux-3cb63d527f76e25dbccce4f577f21aecfa2abac7.tar.gz blackbird-op-linux-3cb63d527f76e25dbccce4f577f21aecfa2abac7.zip | |
sched: Complete buddy switches
Add a NEXT_BUDDY feature flag to aid in debugging.
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | kernel/sched_fair.c | 3 | ||||
| -rw-r--r-- | 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 cea5b82242ee..4f6356e70ad6 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 07c8250b404c..6174c1233993 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) |
