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| author | Vincent Guittot <vincent.guittot@linaro.org> | 2026-09-21 17:22:33 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-09-25 12:45:59 +0200 |
| commit | d2e0100827578641df2f85546bdb57bb1d8ff55b (patch) | |
| tree | 32791b736cbc122730f0329ab73859609dd1954a /kernel | |
| parent | 4bf32ec3327d2d2286e96508cd128ce1592f43ce (diff) | |
| download | linux-d2e0100827578641df2f85546bdb57bb1d8ff55b.tar.gz linux-d2e0100827578641df2f85546bdb57bb1d8ff55b.zip | |
sched/eevdf: Handle more short slice waking cases
Handle better the cases with several short slice tasks waking up
simultaneously.
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260921152238.3804392-4-vincent.guittot@linaro.org
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/fair.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 82155d91de06..03206e15e6fe 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -9836,8 +9836,14 @@ static inline bool set_preempt_buddy(struct cfs_rq *cfs_rq, struct sched_entity static inline bool set_short_buddy(struct cfs_rq *cfs_rq, struct sched_entity *pse) { - if (cfs_rq->next && cfs_rq->next->slice < pse->slice) - return false; + if (cfs_rq->next) { + if (cfs_rq->next->slice < pse->slice) + return false; + + if (cfs_rq->next->slice == pse->slice && + entity_before(cfs_rq->next, pse)) + return false; + } set_next_buddy(cfs_rq, pse); return true; |