The following commit has been merged into the sched/core branch of tip: Commit-ID: b641a8b52c6162172ca31590510569eaadcd5e49 Gitweb: https://git.kernel.org/tip/b641a8b52c6162172ca31590510569eaadcd5e49 Author: Vincent Donnefort <vincent.donnefort@xxxxxxx> AuthorDate: Thu, 25 Feb 2021 08:36:12 Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx> CommitterDate: Wed, 03 Mar 2021 10:33:00 +01:00 sched/fair: use lsub_positive in cpu_util_next() The sub_positive local version is saving an explicit load-store and is enough for the cpu_util_next() usage. Signed-off-by: Vincent Donnefort <vincent.donnefort@xxxxxxx> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Reviewed-by: Quentin Perret <qperret@xxxxxxxxxx> Reviewed-by: Dietmar Eggemann <dietmar.eggemann@xxxxxxx> Link: https://lkml.kernel.org/r/20210225083612.1113823-3-vincent.donnefort@xxxxxxx --- 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 b994db9..7b2fac0 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -6471,7 +6471,7 @@ static unsigned long cpu_util_next(int cpu, struct task_struct *p, int dst_cpu) * util_avg should already be correct. */ if (task_cpu(p) == cpu && dst_cpu != cpu) - sub_positive(&util, task_util(p)); + lsub_positive(&util, task_util(p)); else if (task_cpu(p) != cpu && dst_cpu == cpu) util += task_util(p);
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