tree 3fb7e4d48f398d62e5074e7e3dd183cc54f59820
parent c903ff837909ccada51243307d4239f86af40179
author Mandeep Singh Baines <msb@google.com> 1232046520 -0800
committer Ingo Molnar <mingo@elte.hu> 1232111164 +0100

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>