diff options
| author | Zhang Qiao <zhangqiao22@huawei.com> | 2024-09-26 18:39:49 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2024-09-27 10:23:45 -1000 |
| commit | 95b873693a0841e02b812e693296a884362fdd51 (patch) | |
| tree | a2be2f1a1b2f241335541d33fdadf667a5d17930 /kernel/sched | |
| parent | efe231d9debf6db812bebb262407c95b21cdb8a2 (diff) | |
sched_ext: Remove redundant p->nr_cpus_allowed checker
select_rq_task() already checked that 'p->nr_cpus_allowed > 1',
'p->nr_cpus_allowed == 1' checker in scx_select_cpu_dfl() is redundant.
Signed-off-by: Zhang Qiao <zhangqiao22@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/ext.c | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c index 0c398ecdb938..3cd7c50a51c5 100644 --- a/kernel/sched/ext.c +++ b/kernel/sched/ext.c @@ -3074,22 +3074,13 @@ static s32 scx_select_cpu_dfl(struct task_struct *p, s32 prev_cpu, * there is an idle core elsewhere on the system. */ cpu = smp_processor_id(); - if ((wake_flags & SCX_WAKE_SYNC) && p->nr_cpus_allowed > 1 && + if ((wake_flags & SCX_WAKE_SYNC) && !cpumask_empty(idle_masks.cpu) && !(current->flags & PF_EXITING) && cpu_rq(cpu)->scx.local_dsq.nr == 0) { if (cpumask_test_cpu(cpu, p->cpus_ptr)) goto cpu_found; } - if (p->nr_cpus_allowed == 1) { - if (test_and_clear_cpu_idle(prev_cpu)) { - cpu = prev_cpu; - goto cpu_found; - } else { - return prev_cpu; - } - } - /* * If CPU has SMT, any wholly idle CPU is likely a better pick than * partially idle @prev_cpu. |