Commit 35282316 authored May 23, 2007 by Thomas Gleixner Committed by Linus Torvalds May 23, 2007

NOHZ: Rate limit the local softirq pending warning output



The warning in the NOHZ code, which triggers when a CPU goes idle with
softirqs pending can fill up the logs quite quickly.  Rate limit the output
until we found the root cause of that problem.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 43d4f961

kernel/time/tick-sched.c

+9 −3

Original line number	Diff line number	Diff line
		@@ -167,9 +167,15 @@ void tick_nohz_stop_sched_tick(void)
		goto end;

		cpu = smp_processor_id();
		if (unlikely(local_softirq_pending()))
		if (unlikely(local_softirq_pending())) {
		static int ratelimit;

		if (ratelimit < 10) {
		printk(KERN_ERR "NOHZ: local_softirq_pending %02x\n",
		local_softirq_pending());
		ratelimit++;
		}
		}

		now = ktime_get();
		/*