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| author | Vincent Guittot <vincent.guittot@linaro.org> | 2023-12-01 17:16:51 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-12-23 15:59:56 +0100 |
| commit | 7736ae5572eb344c090fbef9621a228e7e3d6276 (patch) | |
| tree | 4307c5b547f6ceb902c64383442214e1ce69a4e2 /kernel/sched | |
| parent | 1f023007f5e782bda19ad9104830c404fd622c5d (diff) | |
| download | linux-7736ae5572eb344c090fbef9621a228e7e3d6276.tar.gz linux-7736ae5572eb344c090fbef9621a228e7e3d6276.tar.bz2 linux-7736ae5572eb344c090fbef9621a228e7e3d6276.zip | |
sched/fair: Remove SCHED_FEAT(UTIL_EST_FASTUP, true)
sched_feat(UTIL_EST_FASTUP) has been added to easily disable the feature
in order to check for possibly related regressions. After 3 years, it has
never been used and no regression has been reported. Let's remove it
and make fast increase a permanent behavior.
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Lukasz Luba <lukasz.luba@arm.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Reviewed-by: Hongyan Xia <hongyan.xia2@arm.com>
Reviewed-by: Tang Yizhou <yizhou.tang@shopee.com>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn> [for the Chinese translation]
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/20231201161652.1241695-2-vincent.guittot@linaro.org
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/fair.c | 8 | ||||
| -rw-r--r-- | kernel/sched/features.h | 1 |
2 files changed, 3 insertions, 6 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index bcea3d55d95d..e94d65da8d66 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4870,11 +4870,9 @@ static inline void util_est_update(struct cfs_rq *cfs_rq, * to smooth utilization decreases. */ ue.enqueued = task_util(p); - if (sched_feat(UTIL_EST_FASTUP)) { - if (ue.ewma < ue.enqueued) { - ue.ewma = ue.enqueued; - goto done; - } + if (ue.ewma < ue.enqueued) { + ue.ewma = ue.enqueued; + goto done; } /* diff --git a/kernel/sched/features.h b/kernel/sched/features.h index a3ddf84de430..143f55df890b 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -83,7 +83,6 @@ SCHED_FEAT(WA_BIAS, true) * UtilEstimation. Use estimated CPU utilization. */ SCHED_FEAT(UTIL_EST, true) -SCHED_FEAT(UTIL_EST_FASTUP, true) SCHED_FEAT(LATENCY_WARN, false) |