On Mon, Jan 20, 2003 at 05:19:54PM -0800, Joel Becker wrote:
> Attached is a patch adding hangcheck-timer. It is used to detect
> when the system goes out to lunch for a period of time, and then
> returns. This is interesting for debugging drivers as well as for
> clustering environments.
> The module sets a timer. When the timer goes off, it then uses
> get_cycles() to determine how much real time has passed.
> On a normal system, the real elapsed time will be almost
> identical to the expected timer duration. However, if a device decided
> to udelay for 60 seconds (or some other circumstance), the module takes
> notice. If the margin of error passes a threshold, the driver prints a
> warning or the machine is rebooted.
I'm puzzled. What does this do that softdog.c doesn't ?
-- | Dave Jones. http://www.codemonkey.org.uk | SuSE Labs - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to firstname.lastname@example.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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