From: Mandeep Singh Baines <msb@google.com>
Date: Tue, 13 Jan 2009 05:15:17 +0000 (-0800)
Subject: softlock: fix false panic which can occur if softlockup_thresh is reduced
X-Git-Tag: v2.6.29-rc3~40^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=baf48f6577e581a9adb8fe849dc80e24b21d171d;p=pandora-kernel.git

softlock: fix false panic which can occur if softlockup_thresh is reduced

At run-time, if softlockup_thresh is changed to a much lower value,
touch_timestamp is likely to be much older than the new softlock_thresh.

This will cause a false softlockup to be detected. If softlockup_panic
is enabled, the system will panic.

The fix is to touch all watchdogs before changing softlockup_thresh.

Signed-off-by: Mandeep Singh Baines <msb@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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