From: Dmitry Adamushko <[email protected]>
No need to do a check for 'affine wakeup and passive balancing possibilities' in
select_task_rq_fair() when task_cpu(p) == this_cpu.
I guess, this part got missed upon introduction of per-sched_class select_task_rq()
in try_to_wake_up().
Signed-off-by: Dmitry Adamushko <[email protected]>
---
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index f881fc5..2208692 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -925,6 +925,9 @@ static int select_task_rq_fair(struct task_struct *p, int sync)
this_cpu = smp_processor_id();
new_cpu = cpu;
+ if (cpu == this_cpu)
+ goto out_set_cpu;
+
for_each_domain(this_cpu, sd) {
if (cpu_isset(cpu, sd->span)) {
this_sd = sd;
--
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