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| author |   Gregory Haskins <ghaskins@novell.com> | 2008-01-25 21:08:13 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-01-25 21:08:13 +0100 |
| commit | 17b3279b48835eb522d842eae16f541da3729c8a (patch) | |
| tree | c94c7da732fbefda4a938bb6479ebb3b6d8d0c82 /kernel | |
| parent | sched: RT-balance, avoid overloading (diff) | |
| download | linux-dev-17b3279b48835eb522d842eae16f541da3729c8a.tar.xz linux-dev-17b3279b48835eb522d842eae16f541da3729c8a.zip | |
sched: break out early if RT task cannot be migrated
We don't need to bother searching if the task cannot be migrated
Signed-off-by: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched_rt.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index 9becc3710b60..72c81322fb9a 100644 --- a/kernel/sched_rt.c +++ b/kernel/sched_rt.c @@ -176,7 +176,8 @@ static int select_task_rq_rt(struct task_struct *p, int sync) * that is just being woken and probably will have * cold cache anyway. */ - if (unlikely(rt_task(rq->curr))) { + if (unlikely(rt_task(rq->curr)) && + (p->nr_cpus_allowed > 1)) { int cpu = find_lowest_rq(p); return (cpu == -1) ? task_cpu(p) : cpu; |