From: Vincent Guittot vincent.guittot@linaro.org
[ Upstream commit a7ba894821b6ade7bb420455f87020b2838d6180 ]
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 Stable-dep-of: a2e7f03ed28f ("sched/uclamp: Make asym_fits_capacity() use util_fits_cpu()") Signed-off-by: Sasha Levin sashal@kernel.org --- kernel/sched/fair.c | 5 ----- 1 file changed, 5 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 9e2c6e38342c..d706c1a8453a 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -6595,11 +6595,6 @@ 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; }