cpupri_find
return cpupri_find(cp, p, lowest_mask);
int cpupri_find(struct cpupri *cp, struct task_struct *p,
!cpupri_find(&rq->rd->cpupri, rq->donor, NULL))
cpupri_find(&rq->rd->cpupri, p, NULL))
ret = cpupri_find(&task_rq(task)->rd->cpupri,