watchdog pet in kernel module

Vipul Jain vipulsj at
Tue Dec 3 17:45:05 EST 2013

On Tue, Dec 3, 2013 at 2:31 PM, <Valdis.Kletnieks at> wrote:

> On Tue, 03 Dec 2013 13:15:32 -0800, Vipul Jain said:
> > currently we configure/pet the watchdog from user space via /dev/ipmi0
> > device interface and I would like to do the pet part from kernel module.
> That's actually defeating the purpose.  If you do it from the kernel,
> you keep the watchdog from detecting a whole set of hangs that can cause
> userspace to wedge up.

Well we use different mechanism to detect user space hangs and take
corrective actions. Hence we want to separate the user space issues from
kernel space issues by using hardware watchdog pet in kernel space.
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