Re: [PATCH v2] softlockup: decouple hung tasks check from softlockup detection

[Johannes Weiner <hannes@cmpxchg.org>]

On Sun, Jan 11, 2009 at 10:52:13PM -0800, Mandeep Singh Baines wrote:
> 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
> ---
>  include/linux/sched.h |   14 +++++--
>  kernel/Makefile       |    1 +
>  kernel/softlockup.c   |  102 -------------------------------------------------
>  kernel/sysctl.c       |   15 +++++++-
>  lib/Kconfig.debug     |   38 ++++++++++++++++++
>  5 files changed, 63 insertions(+), 107 deletions(-)

kernel/hung_task.c missing?

	Hannes