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Date: Sun, 11 Mar 2001 19:16:33 +1100
From: Andrew Morton <andrewm@uow.edu.au>
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To: Keith Owens <kaos@ocs.com.au>
CC: mingo@elte.hu, Alan Cox <alan@lxorguk.ukuu.org.uk>,
        lkml <linux-kernel@vger.kernel.org>
Subject: Re: [patch] serial console vs NMI watchdog
In-Reply-To: Your message of "Sun, 11 Mar 2001 08:53:40 BST."
	             <Pine.LNX.4.30.0103110852160.1152-100000@elte.hu> <15973.984297609@ocs3.ocs-net>
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Keith Owens wrote:
> 
> On Sun, 11 Mar 2001 08:53:40 +0100 (CET),
> Ingo Molnar <mingo@elte.hu> wrote:
> >it sure has an alternative. The 'cpus spinning' code calls touch_nmi()
> >within the busy loop, the polling code on the control CPU too. This is
> >sure more robust and catches lockup bugs in kdb too ...
> 
> Works for me.  It even makes kdb simpler.

humm...

OK, this seems doable in the case of serial console.
For CONFIG_LP_CONSOLE (which has the same problem) it
looks like we can just call touch_nmi() in lp_console_write().

I'll see what Tim has to say.

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