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| author | Huang Shijie <shijie@os.amperecomputing.com> | 2024-10-01 14:54:51 +0800 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2024-10-07 09:28:40 +0200 |
| commit | e31488c9df27aaea2cdffba688129fdeb3869650 (patch) | |
| tree | 2a18871bd1f011bd405cac71fabe2e7b7998ff3b | |
| parent | 5e9f0c4819deb9459f32f12c4fd2b47993b8c395 (diff) | |
| download | lwn-e31488c9df27aaea2cdffba688129fdeb3869650.tar.gz lwn-e31488c9df27aaea2cdffba688129fdeb3869650.zip | |
sched/fair: remove the DOUBLE_TICK feature
The patch "5e963f2bd46 sched/fair: Commit to EEVDF"
removed the code following the DOUBLE_TICK:
-
- if (!sched_feat(EEVDF) && cfs_rq->nr_running > 1)
- check_preempt_tick(cfs_rq, curr);
The DOUBLE_TICK feature becomes dead code now, so remove it.
Signed-off-by: Huang Shijie <shijie@os.amperecomputing.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: "Christoph Lameter (Ampere)" <cl@linux.com>
Reviewed-by: Vishal Chourasia <vishalc@linux.ibm.com>
Link: https://lore.kernel.org/r/20241001065451.10356-1-shijie@os.amperecomputing.com
| -rw-r--r-- | kernel/sched/fair.c | 6 | ||||
| -rw-r--r-- | kernel/sched/features.h | 1 |
2 files changed, 0 insertions, 7 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 225b31aaee55..c9e3b8d2a85f 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5680,12 +5680,6 @@ entity_tick(struct cfs_rq *cfs_rq, struct sched_entity *curr, int queued) resched_curr(rq_of(cfs_rq)); return; } - /* - * don't let the period tick interfere with the hrtick preemption - */ - if (!sched_feat(DOUBLE_TICK) && - hrtimer_active(&rq_of(cfs_rq)->hrtick_timer)) - return; #endif } diff --git a/kernel/sched/features.h b/kernel/sched/features.h index 290874079f60..7c22b33fb9d3 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -56,7 +56,6 @@ SCHED_FEAT(WAKEUP_PREEMPTION, true) SCHED_FEAT(HRTICK, false) SCHED_FEAT(HRTICK_DL, false) -SCHED_FEAT(DOUBLE_TICK, false) /* * Decrement CPU capacity based on time not spent running tasks |