diff options
author | Mike Galbraith <efault@gmx.de> | 2008-10-17 09:33:21 -0400 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-10-17 09:36:58 -0400 |
commit | b0aa51b999c449e5e3f9faa1ee406e052d407fe7 (patch) | |
tree | c3c21be0aa90658469ef039065b260172ab9b974 | |
parent | b968905292eaa52b25abb7b3e6c0841dac9f03ae (diff) |
sched: minor fast-path overhead reduction
Greetings,
103638d added a bit of avoidable overhead to the fast-path.
Use sysctl_sched_min_granularity instead of sched_slice() to restrict buddy wakeups.
Signed-off-by: Mike Galbraith <efault@gmx.de>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r-- | kernel/sched_fair.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 18fd17172eb6..67084936b602 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c | |||
@@ -747,7 +747,7 @@ pick_next(struct cfs_rq *cfs_rq, struct sched_entity *se) | |||
747 | struct rq *rq = rq_of(cfs_rq); | 747 | struct rq *rq = rq_of(cfs_rq); |
748 | u64 pair_slice = rq->clock - cfs_rq->pair_start; | 748 | u64 pair_slice = rq->clock - cfs_rq->pair_start; |
749 | 749 | ||
750 | if (!cfs_rq->next || pair_slice > sched_slice(cfs_rq, cfs_rq->next)) { | 750 | if (!cfs_rq->next || pair_slice > sysctl_sched_min_granularity) { |
751 | cfs_rq->pair_start = rq->clock; | 751 | cfs_rq->pair_start = rq->clock; |
752 | return se; | 752 | return se; |
753 | } | 753 | } |