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>
WARNING: multiple messages have this Message-ID (diff)
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 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: 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
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 [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20070424131427.940d461e.akpm@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=Prarit@smtp2.linux-foundation.org \
--cc=Rick@smtp2.linux-foundation.org \
--cc=Thomas@smtp2.linux-foundation.org \
--cc=Zachary@smtp2.linux-foundation.org \
--cc=clalance@redhat.com \
--cc=dada1@cosmosbay.com \
--cc=jeremy@goop.org \
--cc=johnstul@us.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=paulus@samba.org \
--cc=prarit@redhat.com \
--cc=ricklind@us.ibm.com \
--cc=schwidefsky@de.ibm.com \
--cc=tglx@linutronix.de \
--cc=virtualization@lists.osdl.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.