Re: [PATCH v2] sched/fair: avoid redundant hrtimer check
From: Huichun Feng
Date: Sat Jun 18 2022 - 13:55:46 EST
The check is required iff HRTICK is enabled and DOUBLE_TICK is disabled,
don't do that then.
Signed-off-by: Huichun Feng <foxhoundsk.tw@xxxxxxxxx>
---
Changes since v1:
- Refine commit message
kernel/sched/fair.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 77b2048a9..80cc1a924 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4668,7 +4668,7 @@ entity_tick(struct cfs_rq *cfs_rq, struct sched_entity *curr, int queued)
/*
* don't let the period tick interfere with the hrtick preemption
*/
- if (!sched_feat(DOUBLE_TICK) &&
+ if (sched_feat(HRTICK) && !sched_feat(DOUBLE_TICK) &&
hrtimer_active(&rq_of(cfs_rq)->hrtick_timer))
return;
#endif
--
2.36.1