linux-kernel - Re: [PATCH] panic_on

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Message-ID: <20060718191345.GE20141@verge.net.au>
Date:	Tue, 18 Jul 2006 15:13:48 -0400
From:	Horms <horms@...ge.net.au>
To:	Andrew Morton <akpm@...l.org>
Cc:	ak@...e.de, rmk@....linux.org.uk, tony.luck@...el.com,
	paulus@...ba.org, anton@...ba.org, chris@...kel.net,
	linux-ia64@...r.kernel.org, linuxppc-dev@...abs.org,
	discuss@...-64.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] panic_on_oops: remove ssleep()

On Mon, Jul 17, 2006 at 05:23:41PM -0700, Andrew Morton wrote:
> On Mon, 17 Jul 2006 19:10:59 -0400
> Horms <horms@...ge.net.au> wrote:
> 
> > On Tue, Jul 18, 2006 at 12:27:51AM +0200, Andi Kleen wrote:
> > > On Monday 17 July 2006 18:17, Horms wrote:
> > > ...
> > > Keeping the delay might be actually useful so that you can see the panic
> > > before system reboots when reboot on panic is enabled. I would just use a loop
> > > of mdelays(1) with touch_nmi_watchdog/touch_softirq_watchdog()s
> > > inbetween.
> > 
> > Ok, I will look into making that happen. I agree that the pause is
> > quite useful.
> 
> It's kind-of already implemented, via pause_on_oops.  Perhaps doing
> something like 
> 
> 	if (panic_on_oops)
> 		pause_on_oops = max(pause_on_oops, 5*HZ);
> 
> would be sufficient.

Thanks, that may well be sufficient. And I assume that it is nicely out
of the arch-dependant code in die(). I will poke around a bit more.

-- 
Horms                                           
  H: http://www.vergenet.net/~horms/
  W: http://www.valinux.co.jp/en/

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