[PATCH 2/3] sched/fair: select cookie matched idle CPU

[Aubrey Li]

In the fast path of task wakeup, select the first cookie matched idle
CPU instead of the first idle CPU.

Signed-off-by: Aubrey Li <aubrey.li@xxxxxxxxxxxxxxx>
---
 kernel/sched/fair.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index ba937b9..19ea8d8 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -6074,7 +6074,13 @@ static int select_idle_cpu(struct task_struct *p, struct sched_domain *sd, int t
 		if (!cpumask_test_cpu(cpu, p->cpus_ptr))
 			continue;
 		if (available_idle_cpu(cpu))
+#ifdef CONFIG_SCHED_CORE
+			if (sched_core_enabled(cpu_rq(cpu)) &&
+			    (p->core_cookie == cpu_rq(cpu)->core->core_cookie))
+				break;
+#else
 			break;
+#endif
 	}
 
 	time = cpu_clock(this) - time;
-- 
2.7.4

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