Re: [RESEND] [PATCH] Softdog enhancement to optionally invoke panicinstead of reboot on timer expiry

[Alan Cox]

On Mon, 28 Mar 2011 20:35:02 +0530
Anithra P Janakiraman <anithra@xxxxxxxxxxxxxxxxxx> wrote:

> Hi,
> 
> The patch is needed for determining the reason for failure when a
> softdog timeout occurs. We use softdog to watch for critical
> application failures and at the minimum a snapshot of the system would
> help to determine the cause. In such a scenario the application could
> fail but there isn't a softlockup as such, hence the detect softlockup
> feature does not help. The patch below adds a module parameter
> soft_panic which when set to 1 causes softdog to invoke panic instead
> of reboot when the softdog timer expires. By invoking panic we execute
> kdump if it is configured and the vmcore generated by kdump should
> provide atleast a minimal idea of the reason for failure.

Looks sensible to me.

Acked-by: Alan Cox <alan@xxxxxxxxxxxxxxx>

Alan
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