The following commit has been merged into the sched/core branch of tip: Commit-ID: 8eeeed9c4a791f0d1f2ea830eb75a4246c117ae2 Gitweb: https://git.kernel.org/tip/8eeeed9c4a791f0d1f2ea830eb75a4246c117ae2 Author: Abel Wu <wuyun.abel@xxxxxxxxxxxxx> AuthorDate: Wed, 07 Sep 2022 19:19:58 +08:00 Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx> CommitterDate: Wed, 07 Sep 2022 21:53:46 +02:00 sched/fair: Remove useless check in select_idle_core() The function select_idle_core() only gets called when has_idle_cores is true which can be possible only when sched_smt_present is enabled. This change also aligns select_idle_core() with select_idle_smt() in the way that the caller do the check if necessary. Signed-off-by: Abel Wu <wuyun.abel@xxxxxxxxxxxxx> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Acked-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20220907112000.1854-4-wuyun.abel@xxxxxxxxxxxxx --- kernel/sched/fair.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 1ad79aa..03ce650 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -6321,9 +6321,6 @@ static int select_idle_core(struct task_struct *p, int core, struct cpumask *cpu bool idle = true; int cpu; - if (!static_branch_likely(&sched_smt_present)) - return __select_idle_cpu(core, p); - for_each_cpu(cpu, cpu_smt_mask(core)) { if (!available_idle_cpu(cpu)) { idle = false;