sched/fair: Removed useless update of p->recent_used_cpu

Since commit 89aafd67f28c ("sched/fair: Use prev instead of new target as recent_used_cpu"),
p->recent_used_cpu is unconditionnaly set with prev.

Fixes: 89aafd67f28c ("sched/fair: Use prev instead of new target as recent_used_cpu")
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mel Gorman <mgorman@suse.de>
Link: https://lkml.kernel.org/r/20210928103544.27489-1-vincent.guittot@linaro.org

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index c50ae23..2468d1d 100644 (file)
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -6413,11 +6413,6 @@ static int select_idle_sibling(struct task_struct *p, int prev, int target)
            (available_idle_cpu(recent_used_cpu) || sched_idle_cpu(recent_used_cpu)) &&
            cpumask_test_cpu(p->recent_used_cpu, p->cpus_ptr) &&
            asym_fits_capacity(task_util, recent_used_cpu)) {
-               /*
-                * Replace recent_used_cpu with prev as it is a potential
-                * candidate for the next wake:
-                */
-               p->recent_used_cpu = prev;
                return recent_used_cpu;
        }