Re: iTCO watchdog last reboot reason?

From: Guenter Roeck
Date: Tue Aug 04 2020 - 13:19:04 EST

On 8/4/20 10:09 AM, Naveen Kumar P wrote:
> On Tue, Aug 4, 2020 at 9:45 PM Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
>> On 8/4/20 7:41 AM, Naveen Kumar P wrote:
>>> [ Please keep me in CC as I'm not subscribed to the list]
>>> Hi everyone,
>>> I enabled the iTCO watchdog in my Linux system.
>>> sudo cat /dev/watchdog perfectly reboots my system. But, is there a
>>> way to find out on each boot if the machine was rebooted due to a
>>> watchdog timeout or not?
>>> Any ideas?
>> If the hardware supports it, the driver could set the reboot reason
>> in its probe function.
> Thank you Guenter for the quick response. Can you please point me to
> the corresponding patch?

I didn't say that one exists, nor that it is possible to actually implement
what I suggested. I only stated a possibility. Please feel free to implement,
test, and submit such a patch yourself.