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Subject: Re: Preempt note in the logs
From: Robert Love <rml@tech9.net>
To: Thunder from the hill <thunder@lightweight.ods.org>
Cc: Arador <diegocg@teleline.es>, dag@newtech.fi,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       conman@kolivas.net
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Date: 24 Aug 2002 14:11:03 -0400
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On Sat, 2002-08-24 at 14:01, Thunder from the hill wrote:

> Do you think it's useful to temporarily put a lock counter into struct 
> task (TEMPORARILY, Linus, temporarily!) and check that as well? Maybe that 
> will point us something.

There already is, it is called preempt_count.

> Or we should extend that whole crap a bit so we could see exactly what 
> caused the preemption count to rise. I don't know if we can do that, but 
> we can try doing that.

A lock trace would be helpful here.  But since I know normal kernel code
is not suspect, all these users need to do is find which oddball module
or patch they are using... e.g. watch it be nvidia.

	Robert Love

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