sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list

	struct rq *rq = rq_of(cfs_rq);

	struct cfs_bandwidth *cfs_b = tg_cfs_bandwidth(cfs_rq->tg);

	struct sched_entity *se;

	int enqueue = 1;

	long task_delta, idle_task_delta;

	se = cfs_rq->tg->se[cpu_of(rq)];

	idle_task_delta = cfs_rq->idle_h_nr_running;

	for_each_sched_entity(se) {

		if (se->on_rq)

			enqueue = 0;

			break;

		cfs_rq = cfs_rq_of(se);

		if (enqueue) {

		enqueue_entity(cfs_rq, se, ENQUEUE_WAKEUP);

		} else {

			update_load_avg(cfs_rq, se, 0);

			se_update_runnable(se);

		cfs_rq->h_nr_running += task_delta;

		cfs_rq->idle_h_nr_running += idle_task_delta;

		/* end evaluation on encountering a throttled cfs_rq */

		if (cfs_rq_throttled(cfs_rq))

			goto unthrottle_throttle;

	}

	for_each_sched_entity(se) {

		cfs_rq = cfs_rq_of(se);

		update_load_avg(cfs_rq, se, UPDATE_TG);

		se_update_runnable(se);

		cfs_rq->h_nr_running += task_delta;

		cfs_rq->idle_h_nr_running += idle_task_delta;

		/* end evaluation on encountering a throttled cfs_rq */

		if (cfs_rq_throttled(cfs_rq))

			break;

			goto unthrottle_throttle;

		/*

		 * One parent has been throttled and cfs_rq removed from the

		 * list. Add it back to not break the leaf list.

		 */

		if (throttled_hierarchy(cfs_rq))

			list_add_leaf_cfs_rq(cfs_rq);

	}

	if (!se)

	/* At this point se is NULL and we are at root level*/

	add_nr_running(rq, task_delta);

unthrottle_throttle:

	/*

	 * The cfs_rq_throttled() breaks in the above iteration can result in

	 * incomplete leaf list maintenance, resulting in triggering the

	for_each_sched_entity(se) {

		cfs_rq = cfs_rq_of(se);

		list_add_leaf_cfs_rq(cfs_rq);

		if (list_add_leaf_cfs_rq(cfs_rq))

			break;

	}

	assert_list_leaf_cfs_rq(rq);