diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 46d219b871093ef50f416008c50c99585f2ce2ca..a8358ddba7efa78bc970c4de5db992dcacc4e26f 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -8507,13 +8507,10 @@ static int tg_change_scheduler(struct task_group *tg, void *data)
 	struct cgroup_subsys_state *css = &tg->css;
 
 	tg->qos_level = qos_level;
-	if (qos_level == -1) {
+	if (qos_level == -1)
 		policy = SCHED_IDLE;
-		cfs_bandwidth_usage_inc();
-	} else {
+	else
 		policy = SCHED_NORMAL;
-		cfs_bandwidth_usage_dec();
-	}
 
 	param.sched_priority = 0;
 	css_task_iter_start(css, 0, &it);
@@ -8541,6 +8538,13 @@ static int cpu_qos_write(struct cgroup_subsys_state *css,
 	if (tg->qos_level == -1 && qos_level == 0)
 		return -EINVAL;
 
+	cpus_read_lock();
+	if (qos_level == -1)
+		cfs_bandwidth_usage_inc();
+	else
+		cfs_bandwidth_usage_dec();
+	cpus_read_unlock();
+
 	rcu_read_lock();
 	walk_tg_tree_from(tg, tg_change_scheduler, tg_nop, (void *)(&qos_level));
 	rcu_read_unlock();