If parent sched domain has no task allowed cpu find. neither find in
it's child. So, go out to save useless checking.
Signed-off-by: Alex Shi <alex....@intel.com>
---
kernel/sched/fair.c | 6 ++----
1 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index b40bc2b..05ee54e 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3150,10 +3150,8 @@ select_task_rq_fair(struct task_struct *p, int sd_flag,
int wake_flags)
load_idx = sd->wake_idx;
group = find_idlest_group(sd, p, cpu, load_idx);
- if (!group) {
- sd = sd->child;
- continue;
- }
+ if (!group)
+ goto unlock;
new_cpu = find_idlest_cpu(group, p, cpu);
--
1.7.5.4
--
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