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    SubjectRe: [PATCH] sched: fix how RT task is pulled
    On Tue, May 17, 2011 at 10:35 AM, Yong Zhang <> wrote:
    > On Sun, May 15, 2011 at 10:50 AM, Hillf Danton <> wrote:
    >> 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?
    > No.
    > Below is how rt_overloaded() is realized:
    > static inline int rt_overloaded(struct rq *rq)
    > {
    >        return atomic_read(&rq->rd->rto_count);
    > }
    > You can notice it's about the overload of the very root_domain.
    Well, why is it going no head if not overloaded?

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