From: Don Zickus <dzickus@redhat.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Andrew Morton <akpm@osdl.org>,
ak@suse.de, shaohua.li@intel.com, miles.lane@gmail.com,
linux-kernel@vger.kernel.org
Subject: Re: [2.6.17-rc5-mm2] crash when doing second suspend: BUG in arch/i386/kernel/nmi.c:174
Date: Tue, 6 Jun 2006 19:42:32 -0400 [thread overview]
Message-ID: <20060606234232.GD11696@redhat.com> (raw)
In-Reply-To: <44860F7B.2040105@goop.org>
On Tue, Jun 06, 2006 at 04:27:55PM -0700, Jeremy Fitzhardinge wrote:
> Andrew Morton wrote:
> >All the above applies to suspend-to-disk. I don't know if suspend-to-RAM
> >shuts down the APs.
> >
>
> I'm using suspend-to-mem and it looks like its unplugging/replugging all
> the CPUs.
>
> The part of the question I don't quite understand is why this is
> considered per-CPU state? Surely NMI-watchdog is a system-wide thing?
> Or does this also tie into other uses of the performance registers which
> may be set per-CPU?
>
> J
The nmi watchdog is enable/disabled on a per-cpu basis. The fact that a
single switch turns all of them on/off is just convienance. Adding in
code to turn them on/off on a per-cpu basis just requires a simple user
interface. It has been talked about before to deal with NUMA systems.
Cheers,
Don
next prev parent reply other threads:[~2006-06-06 23:38 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-02 22:51 [2.6.17-rc5-mm2] crash when doing second suspend: BUG in arch/i386/kernel/nmi.c:174 Jeremy Fitzhardinge
2006-06-04 11:47 ` Rafael J. Wysocki
2006-06-05 7:21 ` Jeremy Fitzhardinge
2006-06-05 7:37 ` Jeremy Fitzhardinge
2006-06-05 7:48 ` Andrew Morton
2006-06-05 7:59 ` Jeremy Fitzhardinge
2006-06-05 8:35 ` Miles Lane
2006-06-06 6:44 ` Shaohua Li
2006-06-06 14:17 ` Don Zickus
2006-06-06 14:18 ` Andi Kleen
2006-06-06 21:45 ` Don Zickus
2006-06-06 22:15 ` Andrew Morton
2006-06-06 23:05 ` Don Zickus
2006-06-06 23:22 ` Andrew Morton
2006-06-06 23:27 ` Jeremy Fitzhardinge
2006-06-06 23:32 ` Andi Kleen
2006-06-06 23:42 ` Don Zickus [this message]
2006-06-08 20:11 ` Pavel Machek
2006-06-06 23:38 ` Nigel Cunningham
2006-06-07 0:06 ` Jeremy Fitzhardinge
2006-06-07 0:13 ` Nigel Cunningham
2006-06-07 0:24 ` Andrew Morton
2006-06-07 0:29 ` Jeremy Fitzhardinge
2006-06-07 0:31 ` Nigel Cunningham
2006-06-07 0:33 ` Andi Kleen
2006-06-07 0:40 ` Nigel Cunningham
2006-06-07 0:26 ` Jeremy Fitzhardinge
2006-06-07 0:33 ` Nigel Cunningham
2006-06-07 0:56 ` Jeremy Fitzhardinge
2006-06-08 20:13 ` Pavel Machek
2006-06-08 12:45 ` Pavel Machek
2006-06-06 23:34 ` Andi Kleen
2006-06-06 23:55 ` Don Zickus
2006-06-07 0:04 ` Andi Kleen
2006-06-07 0:05 ` Nigel Cunningham
2006-06-07 0:42 ` Don Zickus
2006-06-07 0:50 ` Nigel Cunningham
2006-06-07 3:29 ` [linux-pm] " David Brownell
2006-06-07 9:55 ` Rafael J. Wysocki
2006-06-08 20:27 ` Pavel Machek
2006-06-06 16:23 ` Jeremy Fitzhardinge
2006-06-06 16:51 ` Don Zickus
2006-06-07 2:49 ` Don Zickus
2006-06-07 16:33 ` Andi Kleen
2006-06-07 17:07 ` Jeremy Fitzhardinge
2006-06-07 17:50 ` Don Zickus
2006-06-07 18:53 ` Jeremy Fitzhardinge
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