[PATCH] NOHZ: Produce debug output instead of a BUG()
The BUG_ON() in tick_nohz_stop_sched_tick() triggers on some boxen.
Remove the BUG_ON and print information about the pending softirq
to allow better debugging of the problem.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 9234e44..512a4a9 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -165,7 +165,9 @@
goto end;
cpu = smp_processor_id();
- BUG_ON(local_softirq_pending());
+ if (unlikely(local_softirq_pending()))
+ printk(KERN_ERR "NOHZ: local_softirq_pending %02x\n",
+ local_softirq_pending());
now = ktime_get();
/*