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From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Andrew Morton <akpm@linux-foundation.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 11:16:09 -0700	[thread overview]
Message-ID: <462E4969.6070802@goop.org> (raw)
In-Reply-To: <20070424105738.e0ce36a9.akpm@linux-foundation.org>

Andrew Morton wrote:
> 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.
>   

sched_clock doesn't *do* anything except flap interrupts. Oh, wait, have
you got Andi's bugfixed version of the sched_clock patch?  The first
version did a local_save_flags rather than a local_irq_save.

>> 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?
>   

Didn't make a difference here.  Building your config now.

> I was using printk timestamps and netconsole at the time.
>   

Ah, great, now you're going to make me setup netconsole...

    J

  reply	other threads:[~2007-04-24 18:16 UTC|newest]

Thread overview: 51+ 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 ` Jeremy Fitzhardinge
2007-03-27 21:49 ` [patch 1/4] Ignore stolen time in the softlockup watchdog Jeremy Fitzhardinge
2007-03-27 21:49   ` Jeremy Fitzhardinge
2007-04-24  6:49   ` Andrew Morton
2007-04-24  6:49     ` Andrew Morton
2007-04-24  6:58     ` Jeremy Fitzhardinge
2007-04-24  7:09       ` Andrew Morton
2007-04-24  7:09         ` Andrew Morton
2007-04-24 17:51     ` Jeremy Fitzhardinge
2007-04-24 17:57       ` Andrew Morton
2007-04-24 17:57         ` Andrew Morton
2007-04-24 18:16         ` Jeremy Fitzhardinge [this message]
2007-04-24 18:32           ` Andrew Morton
2007-04-24 18:32             ` Andrew Morton
2007-04-24 20:00             ` Jeremy Fitzhardinge
2007-04-24 20:14               ` Andrew Morton
2007-04-24 20:14                 ` Andrew Morton
2007-04-24 20:46                 ` Jeremy Fitzhardinge
2007-04-24 20:24               ` Jeremy Fitzhardinge
2007-04-24 20:24                 ` Jeremy Fitzhardinge
2007-04-24 20:33                 ` Andrew Morton
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 20:59                     ` Ingo Molnar
2007-04-24 21:01                     ` Daniel Walker
2007-04-24 21:14                     ` Andrew Morton
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   ` Jeremy Fitzhardinge
2007-03-27 21:49 ` [patch 3/4] Locally disable the softlockup watchdog rather than touching it Jeremy Fitzhardinge
2007-03-27 21:49   ` Jeremy Fitzhardinge
2007-03-28 13:33   ` Prarit Bhargava
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 14:44       ` Jeremy Fitzhardinge
2007-03-28 14:51       ` Prarit Bhargava
2007-03-28 14:51         ` Prarit Bhargava
2007-03-28 15:22         ` Jeremy Fitzhardinge
2007-03-28 15:27           ` Prarit Bhargava
2007-03-28 15:27             ` Prarit Bhargava
2007-03-27 21:49 ` [patch 4/4] Add global disable/enable for softlockup watchdog Jeremy Fitzhardinge
2007-03-27 21:49   ` Jeremy Fitzhardinge

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