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authorThomas Gleixner <tglx@linutronix.de>2011-10-05 13:32:34 +0200
committerIngo Molnar <mingo@elte.hu>2011-10-06 12:47:04 +0200
commit1c83437e80186832a9a48dbb6b8868d28e40e562 (patch)
tree5b9170301b6cca9980f019c52bee31c3cc84817c /kernel
parent4939602a2441306008c6dca38216b741d4e09a42 (diff)
sched: Warn on rt throttling
The default rt-throttling is a source of never ending questions. Warn once when we go into throttling so folks have that info in dmesg. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1110051331480.18778@ionos Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched_rt.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 3023fd1ef36..056cbd2e2a2 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -655,6 +655,7 @@ static int sched_rt_runtime_exceeded(struct rt_rq *rt_rq)
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;