From: Andrew Morton <akpm@linux-foundation.org>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Ingo Molnar <mingo@elte.hu>,
Linux Kernel <linux-kernel@vger.kernel.org>,
virtualization@lists.osdl.org,
Prarit Bhargava <prarit@redhat.com>,
Eric Dumazet <dada1@cosmosbay.com>,
Thomas Gleixner <tglx@linutronix.de>,
john stultz <johnstul@us.ibm.com>,
Zachary Amsden <zach@vmware.com>,
James Morris <jmorris@namei.org>, Dan Hecht <dhecht@vmware.com>,
Paul Mackerras <paulus@samba.org>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Chris Lalancette <clalance@redhat.com>,
Rick Lindsley <ricklind@us.ibm.com>, Andi Kleen <ak@suse.de>
Subject: Re: [patch 1/4] Ignore stolen time in the softlockup watchdog
Date: Tue, 24 Apr 2007 10:57:38 -0700 [thread overview]
Message-ID: <20070424105738.e0ce36a9.akpm@linux-foundation.org> (raw)
In-Reply-To: <462E43A7.1050001@goop.org>
On Tue, 24 Apr 2007 10:51:35 -0700 Jeremy Fitzhardinge <jeremy@goop.org> 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.
next prev parent reply other threads:[~2007-04-24 17:58 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-27 21:49 [patch 0/4] Revised softlockup watchdog improvement patches Jeremy Fitzhardinge
2007-03-27 21:49 ` [patch 1/4] Ignore stolen time in the softlockup watchdog Jeremy Fitzhardinge
2007-04-24 6:49 ` Andrew Morton
2007-04-24 6:58 ` Jeremy Fitzhardinge
2007-04-24 7:09 ` Andrew Morton
2007-04-24 17:51 ` Jeremy Fitzhardinge
2007-04-24 17:57 ` Andrew Morton [this message]
2007-04-24 18:16 ` Jeremy Fitzhardinge
2007-04-24 18:32 ` Andrew Morton
2007-04-24 20:00 ` Jeremy Fitzhardinge
2007-04-24 20:14 ` Andrew Morton
2007-04-24 20:46 ` Jeremy Fitzhardinge
2007-04-24 20:24 ` Jeremy Fitzhardinge
2007-04-24 20:33 ` Andrew Morton
2007-04-24 20:48 ` Jeremy Fitzhardinge
2007-04-24 20:52 ` Daniel Walker
2007-04-24 20:59 ` Ingo Molnar
2007-04-24 21:01 ` Daniel Walker
2007-04-24 21:14 ` Andrew Morton
2007-04-24 21:20 ` Andi Kleen
2007-04-24 21:33 ` Daniel Walker
2007-03-27 21:49 ` [patch 2/4] percpu enable flag for " Jeremy Fitzhardinge
2007-03-27 21:49 ` [patch 3/4] Locally disable the softlockup watchdog rather than touching it Jeremy Fitzhardinge
2007-03-28 13:33 ` Prarit Bhargava
2007-03-28 13:50 ` Andi Kleen
2007-03-28 14:00 ` Prarit Bhargava
2007-03-28 14:09 ` Andi Kleen
2007-03-28 14:13 ` Prarit Bhargava
2007-03-28 14:44 ` Jeremy Fitzhardinge
2007-03-28 14:51 ` Prarit Bhargava
2007-03-28 15:22 ` Jeremy Fitzhardinge
2007-03-28 15:27 ` Prarit Bhargava
2007-03-27 21:49 ` [patch 4/4] Add global disable/enable for softlockup watchdog Jeremy Fitzhardinge
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