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Date: Sun, 17 Mar 2002 13:59:08 +0100
From: Dave Jones <davej@suse.de>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Daniel Phillips <phillips@bonn-fries.net>, Ian Duggan <ian@ianduggan.net>,
        Robert Love <rml@tech9.net>,
        linux kernel <linux-kernel@vger.kernel.org>
Subject: Re: 2.4.18 Preempt Freezeups
Message-ID: <20020317135908.A4006@suse.de>
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On Sun, Mar 17, 2002 at 03:31:24AM +0000, Alan Cox wrote:

 > Think about profiling registers, mtrrs, msrs, and so forth. For example
 > if we had thread handling MCE traps we would hit a problem. As it happens
 > MCE is an interrupt so its all nice.

 Ah, I'm glad you mentioned this. It's reminded me that my
 timer-based 'check for non-fatal machine check and log' code
 needs some work for SMP..

 Are routines called with smp_call_function() preempt safe, or
 must they have extra locking added ?

-- 
| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs
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