kernel/sched/rt.c

1918 	struct rq *lowest_rq = NULL;
1928 		lowest_rq = cpu_rq(cpu);
1930 		if (lowest_rq->rt.highest_prio.curr <= task->prio) {
1936 			lowest_rq = NULL;
1941 		if (double_lock_balance(rq, lowest_rq)) {
1952 				     !cpumask_test_cpu(lowest_rq->cpu, &task->cpus_mask) ||
1958 				double_unlock_balance(rq, lowest_rq);
1959 				lowest_rq = NULL;
1965 		if (lowest_rq->rt.highest_prio.curr > task->prio)
1969 		double_unlock_balance(rq, lowest_rq);
1970 		lowest_rq = NULL;
1973 	return lowest_rq;
2004 	struct rq *lowest_rq;
2074 	lowest_rq = find_lock_lowest_rq(next_task, rq);
2075 	if (!lowest_rq) {
2109 	set_task_cpu(next_task, lowest_rq->cpu);
2110 	activate_task(lowest_rq, next_task, 0);
2111 	resched_curr(lowest_rq);
2114 	double_unlock_balance(rq, lowest_rq);