Re: [patch 1/4] Ignore stolen time in the softlockup watchdog
From: Andrew Morton
Date: Tue Apr 24 2007 - 13:59:28 EST
On Tue, 24 Apr 2007 10:51:35 -0700 Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:
> Andrew Morton wrote:
> > It seems fairly sensitive to .config settings. See
> > http://userweb.kernel.org/~akpm/config-sony.txt
> I haven't tried your config yet, but I haven't managed to reproduce it
> by playing with the usual suspects in my config (SMP, PREEMPT). Any
> idea about which config changes make the difference?
I said that because the damn thing went away when I was hunting it down
because I lost the config and was unable to remember the right combination
of debug settings. Fortunately it later came back so I took care to
preserve the config.
> Hm, is it caused by using sched_clock() to generate the printk
> timestamps while generating the lock test output?
Conceivably. What does that locking API test do?
I was using printk timestamps and netconsole at the time.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/