Messages in this thread Patch in this message | | | Date | Fri, 08 Jun 2007 00:21:30 -0700 | From | Chris Wright <> | Subject | [patch 03/54] NOHZ: Rate limit the local softirq pending warning output |
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-stable review patch. If anyone has any objections, please let us know. ---------------------
From: Thomas Gleixner <tglx@linutronix.de>
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> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> ---
kernel/time/tick-sched.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
--- linux-2.6.21.4.orig/kernel/time/tick-sched.c +++ linux-2.6.21.4/kernel/time/tick-sched.c @@ -167,9 +167,15 @@ void tick_nohz_stop_sched_tick(void) goto end; cpu = smp_processor_id(); - if (unlikely(local_softirq_pending())) - printk(KERN_ERR "NOHZ: local_softirq_pending %02x\n", - 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(); /* -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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