diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 3023fd1..056cbd2 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -655,6 +655,7 @@
 
 	if (rt_rq->rt_time > runtime) {
 		rt_rq->rt_throttled = 1;
+		printk_once(KERN_WARNING "sched: RT throttling activated\n");
 		if (rt_rq_throttled(rt_rq)) {
 			sched_rt_rq_dequeue(rt_rq);
 			return 1;