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From 53d8b3e798d7bb049a93a4ee97a2298241bda77f Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 2 May 2010 20:55:06 +0200
Subject: [PATCH] sched: Warn on rt throttling
commit 4b40e94233914642735b0a366cee9d0634224430 in tip.
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: Paul Gortmaker <paul.gortmaker@windriver.com>
---
kernel/sched_rt.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index a1791d7..4d7521f 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -586,6 +586,7 @@ 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;
--
1.7.0.4
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