From: Mandeep Singh Baines <msb@google.com>
Date: Thu, 15 Jan 2009 19:08:40 +0000 (-0800)
Subject: softlockup: decouple hung tasks check from softlockup detection
X-Git-Tag: v2.6.30-rc1~1^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e162b39a368f0401e41b558f430c354d12a85b37;p=pandora-kernel.git

softlockup: decouple hung tasks check from softlockup detection

Decoupling allows:

* hung tasks check to happen at very low priority

* hung tasks check and softlockup to be enabled/disabled independently
  at compile and/or run-time

* individual panic settings to be enabled disabled independently
  at compile and/or run-time

* softlockup threshold to be reduced without increasing hung tasks
  poll frequency (hung task check is expensive relative to softlock watchdog)

* hung task check to be zero over-head when disabled at run-time

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