From 736cc6b31102236a55470c72523ed0a65eb3f804 Mon Sep 17 00:00:00 2001 From: Vincent Donnefort Date: Thu, 25 Feb 2021 08:36:12 +0000 Subject: [PATCH] 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 Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ingo Molnar Reviewed-by: Quentin Perret Reviewed-by: Dietmar Eggemann Link: https://lkml.kernel.org/r/20210225083612.1113823-3-vincent.donnefort@arm.com --- 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 b994db9d0606..7b2fac0d446d 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); -- 2.11.0