[PATCH] sched: fix how RT task is pulled

From: Hillf Danton
Date: Sat May 14 2011 - 22:51:02 EST


When pulling RT task for a given runqueue, if it is already overloaded
with RT tasks, the pull operation could be avoided at the moment.

btw, it looks like a typo?

Signed-off-by: Hillf Danton <dhillf@xxxxxxxxx>
---
kernel/sched_rt.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 19ecb31..14c764b 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -1440,7 +1440,7 @@ static int pull_rt_task(struct rq *this_rq)
struct task_struct *p;
struct rq *src_rq;

- if (likely(!rt_overloaded(this_rq)))
+ if (unlikely(rt_overloaded(this_rq)))
return 0;

for_each_cpu(cpu, this_rq->rd->rto_mask) {
--
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