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| author | Vincent Donnefort <vincent.donnefort@arm.com> | 2021-02-25 08:36:12 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-03-06 12:40:22 +0100 |
| commit | 736cc6b31102236a55470c72523ed0a65eb3f804 (patch) | |
| tree | d20f8ce015929fd50d28aaedda4e8b8ddfa7c983 | |
| parent | 0372e1cf70c28de6babcba38ef97b6ae3400b101 (diff) | |
| download | linux-736cc6b31102236a55470c72523ed0a65eb3f804.tar.bz2 | |
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@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Quentin Perret <qperret@google.com>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Link: https://lkml.kernel.org/r/20210225083612.1113823-3-vincent.donnefort@arm.com
| -rw-r--r-- | kernel/sched/fair.c | 2 |
1 files changed, 1 insertions, 1 deletions
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); |