rt_rq_throttled
if (rt_rq_throttled(rt_rq))
if (group_rq && (rt_rq_throttled(group_rq) || !group_rq->rt_nr_running)) {
return rt_rq_throttled(rt_rq);
if (!rt_rq_throttled(rt_rq))
return rt_rq_throttled(rt_rq);
if (rt_rq_throttled(rt_rq)) {