Messages in this thread Patch in this message | | | From | Honglei Wang <> | Subject | [PATCH v2 1/3] sched/fair: avoid burst statistic if it's not set | Date | Wed, 8 Dec 2021 22:50:18 +0800 |
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It's not necessary to do burst associated statistic and calculation for runtime if the burst feature is not set at all. Just return at the very start point if so.
Signed-off-by: Honglei Wang <wanghonglei@didichuxing.com> --- kernel/sched/fair.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 6e476f6d9435..2cd626c22912 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4640,6 +4640,11 @@ void __refill_cfs_bandwidth_runtime(struct cfs_bandwidth *cfs_b) if (unlikely(cfs_b->quota == RUNTIME_INF)) return; + if (cfs_b->burst == 0 && cfs_b->runtime_snap == cfs_b->quota) { + cfs_b->runtime = cfs_b->quota; + return; + } + cfs_b->runtime += cfs_b->quota; runtime = cfs_b->runtime_snap - cfs_b->runtime; if (runtime > 0) { -- 2.14.1
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