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printk: Add printk_deferred_once

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Two of the three prink_deferred uses are really printk_once style
uses, so add a printk_deferred_once macro to simplify those call
sites.

Signed-off-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jiri Bohac <jbohac@suse.cz>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
John Stultz
2014-06-04 16:11:41 -07:00
committed by Linus Torvalds
parent aac74dc495
commit c224815dac
3 changed files with 13 additions and 13 deletions
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8
kernel/sched/rt.c
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@@ -890,14 +890,8 @@ static int sched_rt_runtime_exceeded(struct rt_rq *rt_rq)
* but accrue some time due to boosting.
*/
if (likely(rt_b->rt_runtime)) {
static bool once = false;
rt_rq->rt_throttled = 1;
if (!once) {
once = true;
printk_deferred("sched: RT throttling activated\n");
}
printk_deferred_once("sched: RT throttling activated\n");
} else {
/*
* In case we did anyway, make it go away,