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); -- 1.7.5.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/