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authorIngo Molnar <mingo@elte.hu>2007-12-18 15:21:13 +0100
committerIngo Molnar <mingo@elte.hu>2007-12-18 15:21:13 +0100
commit6cbf1c126cf6a727287d61b122fde00a8b827bfe (patch)
treeb6eaf9d529721bb0928f6834dbd1ad61f87c0697
parent2bacec8c318ca0418c0ee9ac662ee44207765dd4 (diff)
downloadop-kernel-dev-6cbf1c126cf6a727287d61b122fde00a8b827bfe.zip
op-kernel-dev-6cbf1c126cf6a727287d61b122fde00a8b827bfe.tar.gz
sched: do not hurt SCHED_BATCH on wakeup
measurements by Yanmin Zhang have shown that SCHED_BATCH tasks benefit if they run the same place_entity() logic as SCHED_OTHER tasks - so uniformize behavior in this area. Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--kernel/sched_fair.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index c33f0ce..da7c061 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -511,8 +511,7 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial)
if (!initial) {
/* sleeps upto a single latency don't count. */
- if (sched_feat(NEW_FAIR_SLEEPERS) && entity_is_task(se) &&
- task_of(se)->policy != SCHED_BATCH)
+ if (sched_feat(NEW_FAIR_SLEEPERS) && entity_is_task(se))
vruntime -= sysctl_sched_latency;
/* ensure we never gain time by being placed backwards. */
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