luck/tmp_suning_uos_patched
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

NOHZ: Rate limit the local softirq pending warning output

Browse Source 
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>
This commit is contained in:
Thomas Gleixner 2007-05-23 13:57:37 -07:00 committed by Linus Torvalds
parent 43d4f961a8
commit 3528231606
1 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
kernel/time/tick-sched.c
View File

@ -167,9 +167,15 @@ void tick_nohz_stop_sched_tick(void)
goto end; goto end;
cpu = smp_processor_id(); cpu = smp_processor_id();
if (unlikely(local_softirq_pending())) if (unlikely(local_softirq_pending())) {
printk(KERN_ERR "NOHZ: local_softirq_pending %02x\n", static int ratelimit;
local_softirq_pending());
if (ratelimit < 10) {
printk(KERN_ERR "NOHZ: local_softirq_pending %02x\n",
local_softirq_pending());
ratelimit++;
}
}
now = ktime_get(); now = ktime_get();
/* /*