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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-09-11 11:59:22 +0200
committerIngo Molnar <mingo@elte.hu>2009-09-15 16:01:02 +0200
commite6b1b2c9c0461c4e0971ed905ce3cda6512ee82a (patch)
tree6462056dec7dcf59139f38d399f2cb27b07bd609
parentb78bb868c54bebbf8d8786a3f8320700d6d2b864 (diff)
downloadop-kernel-dev-e6b1b2c9c0461c4e0971ed905ce3cda6512ee82a.zip
op-kernel-dev-e6b1b2c9c0461c4e0971ed905ce3cda6512ee82a.tar.gz
sched: Split WAKEUP_OVERLAP
It consists of two conditions, split them out in separate toggles so we can test them independently. 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.c7
-rw-r--r--kernel/sched_features.h1
2 files changed, 5 insertions, 3 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index aa7f841..cea5b82 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1526,9 +1526,10 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p, int sync)
if (!sched_feat(WAKEUP_PREEMPT))
return;
- if (sched_feat(WAKEUP_OVERLAP) && (sync ||
- (se->avg_overlap < sysctl_sched_migration_cost &&
- pse->avg_overlap < sysctl_sched_migration_cost))) {
+ if ((sched_feat(WAKEUP_SYNC) && sync) ||
+ (sched_feat(WAKEUP_OVERLAP) &&
+ (se->avg_overlap < sysctl_sched_migration_cost &&
+ pse->avg_overlap < sysctl_sched_migration_cost))) {
resched_task(curr);
return;
}
diff --git a/kernel/sched_features.h b/kernel/sched_features.h
index e2dc63a..07c8250 100644
--- a/kernel/sched_features.h
+++ b/kernel/sched_features.h
@@ -12,6 +12,7 @@ SCHED_FEAT(ASYM_GRAN, 1)
SCHED_FEAT(LB_BIAS, 1)
SCHED_FEAT(LB_WAKEUP_UPDATE, 1)
SCHED_FEAT(ASYM_EFF_LOAD, 1)
+SCHED_FEAT(WAKEUP_SYNC, 0)
SCHED_FEAT(WAKEUP_OVERLAP, 0)
SCHED_FEAT(LAST_BUDDY, 1)
SCHED_FEAT(OWNER_SPIN, 1)
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