From: Andrew Morton <akpm@linux-foundation.org>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Bhargava <prarit@redhat.com>,
Thomas@smtp2.linux-foundation.org, Lindsley <ricklind@us.ibm.com>,
Prarit@smtp2.linux-foundation.org,
john stultz <johnstul@us.ibm.com>,
Zachary@smtp2.linux-foundation.org,
Linux Kernel <linux-kernel@vger.kernel.org>,
Eric Dumazet <dada1@cosmosbay.com>,
virtualization@lists.osdl.org,
Chris Lalancette <clalance@redhat.com>,
Paul Mackerras <paulus@samba.org>,
Rick@smtp2.linux-foundation.org,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Ingo Molnar <mingo@elte.hu>, Gleixner <tglx@linutronix.de>
Subject: Re: [patch 1/4] Ignore stolen time in the softlockup watchdog
Date: Tue, 24 Apr 2007 13:14:27 -0700 [thread overview]
Message-ID: <20070424131427.940d461e.akpm@linux-foundation.org> (raw)
In-Reply-To: <462E61F1.7060403@goop.org>
On Tue, 24 Apr 2007 13:00:49 -0700 Jeremy Fitzhardinge <jeremy@goop.org> wrote:
> Andrew Morton wrote:
> > Well, it _is_ mysterious.
> >
> > Did you try to locate the code which failed? I got lost in macros and
> > include files, and gave up very very easily. Stop hiding, Ingo.
> >
>
> OK, I've managed to reproduce it. Removing the local_irq_save/restore
> from sched_clock() makes it go away, as I'd expect (otherwise it would
> really be magic).
erm, why do you expect that? A local_irq_save()/local_irq_restore() pair
shouldn't be affecting anything?
> But given that it never seems to touch the softlockup
> during testing, I have no idea what difference it makes...
To what softlockup are you referring, and what does that have to do with
anything?
<feels dumb>
next prev parent reply other threads:[~2007-04-24 20:14 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
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 [this message]
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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