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    Subject[PATCH v4 17/20] RT: restore the migratable conditional
    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;
    --
    -
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