linux-kernel - [PATCH] Inhibit NMI watchdog when Alt-SysRq-T operation is underway.

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Message-ID: <20070709140242.GA18098@andromeda.dapyr.net>
Date:	Mon, 9 Jul 2007 10:02:42 -0400
From:	Konrad Rzeszutek <konrad@...nok.org>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH] Inhibit NMI watchdog when Alt-SysRq-T operation is underway.

On large memory configuration with not so fast CPUs the NMI watchdog 
is triggered when memory addresses are being gathered and printed. 
The code paths for Alt-SysRq-t are sprinkled with touch_nmi_watchdog 
in various places but not in this routine (or in the loop that utilizes
this function). The patch has been tested for regression on large CPU+memory 
configuration (128 logical CPUs + 224 GB) and 1,2,4,16-CPU sockets with various 
memory sizes (1,2,4,6,20). 
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