Messages in this thread Patch in this message | | | Date | Tue, 20 Nov 2007 20:01:11 -0500 | From | Steven Rostedt <> | Subject | [PATCH v4 17/20] RT: restore the migratable conditional |
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From: Gregory Haskins <ghaskins@novell.com>
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> ---
kernel/sched_rt.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
Index: linux-compile.git/kernel/sched_rt.c =================================================================== --- linux-compile.git.orig/kernel/sched_rt.c 2007-11-20 19:53:11.000000000 -0500 +++ linux-compile.git/kernel/sched_rt.c 2007-11-20 19:53:13.000000000 -0500 @@ -173,7 +173,8 @@ static int select_task_rq_rt(struct task * 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; -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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