mpcore watchdogs questions

[Don Zickus]

On Mon, Dec 06, 2010 at 10:34:31AM +0100, Per Fransson wrote:
> 
> The way I see it, the idea behind the lockup detection code, and please correct
> me if I'm wrong, is to cover the following case on a per-CPU basis:
> 
> * Assuming the CPU in question is actually chugging along, is it
> getting real work
> done, where "real work" is defined as being able to schedule a high-prio kernel
> thread and have it perform the actions expected of it (kicking the watchdog).
> In the hardlockup case "real work" is instead defined as being able to
> respond to
> hrtimers going off.

Yup, that sounds right.

Cheers,
Don