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| author | Mike Galbraith <efault@gmx.de> | 2008-10-17 15:33:21 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-17 15:36:58 +0200 |
| commit | b0aa51b999c449e5e3f9faa1ee406e052d407fe7 (patch) | |
| tree | c3c21be0aa90658469ef039065b260172ab9b974 /kernel/sched_fair.c | |
| parent | b968905292eaa52b25abb7b3e6c0841dac9f03ae (diff) | |
| download | blackbird-op-linux-b0aa51b999c449e5e3f9faa1ee406e052d407fe7.tar.gz blackbird-op-linux-b0aa51b999c449e5e3f9faa1ee406e052d407fe7.zip | |
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>
Diffstat (limited to 'kernel/sched_fair.c')
| -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) struct rq *rq = rq_of(cfs_rq); u64 pair_slice = rq->clock - cfs_rq->pair_start; - if (!cfs_rq->next || pair_slice > sched_slice(cfs_rq, cfs_rq->next)) { + if (!cfs_rq->next || pair_slice > sysctl_sched_min_granularity) { cfs_rq->pair_start = rq->clock; return se; } |
