From 8ca0e14ffb12c257de591571a9e96102acdb1c64 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 15 Oct 2007 17:00:14 +0200 Subject: [PATCH] sched: disable sleeper_fairness on SCHED_BATCH disable sleeper fairness for batch tasks - they are about batch processing after all. Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- kernel/sched_fair.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 3ecbfd0902d8..410b77aea216 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -485,7 +485,9 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial) vruntime += sched_vslice_add(cfs_rq, se); if (!initial) { - if (sched_feat(NEW_FAIR_SLEEPERS)) + struct task_struct *p = container_of(se, struct task_struct, se); + + if (sched_feat(NEW_FAIR_SLEEPERS) && p->policy != SCHED_BATCH) vruntime -= sysctl_sched_latency; vruntime = max_t(s64, vruntime, se->vruntime); -- GitLab