Messages in this thread Patch in this message | | | From | Alex Shi <> | Subject | [PATCH 03/10] sched: don't need go to smaller sched domain | Date | Mon, 3 Dec 2012 21:54:07 +0800 |
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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.shi@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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