linux-kernel - Re: iTCO watchdog last reboot reason?

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Message-ID: <83ff62ab-42c8-df6c-32c1-c1df2f8cda7a@roeck-us.net>
Date:   Tue, 4 Aug 2020 09:15:46 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Naveen Kumar P <naveenkumar.parna@...il.com>,
        linux-watchdog@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: iTCO watchdog last reboot reason?

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.

Guenter