linux-kernel - Re: [PATCH v3] watchdog: Add hook for kicking in kdump path

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Message-ID: <20130424144226.GI79013@redhat.com>
Date:	Wed, 24 Apr 2013 10:42:26 -0400
From:	Don Zickus <dzickus@...hat.com>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	linux-watchdog@...r.kernel.org, kexec@...ts.infradead.org,
	wim@...ana.be, LKML <linux-kernel@...r.kernel.org>,
	vgoyal@...hat.com, dyoung@...hat.com
Subject: Re: [PATCH v3] watchdog: Add hook for kicking in kdump path

On Thu, Apr 18, 2013 at 07:54:13AM -0700, Guenter Roeck wrote:
> > No, that will probably work.  It is my misunderstanding.  Is there a
> > common way to check the timeout length and the ping frequency?
> > 
> Usually it is configured in /etc/watchdog.conf if the watchdog package
> is installed. The standard ping interval is "interval", the timeout is
> "watchdog-timeout". See "man watchdog.conf" for details.
> 
> Minimum and maximum values for a given watchdog driver are not exported
> to user space, so you would have to look into the driver sources to find
> out what they are.

Hi Guenter,

Is there an easy way to determine which driver is loaded for each
/dev/watchdogN device (from a script perspective).

Basically, I wanted to determine the module that needs to be included in
the kdump initrd image.

Thanks,
Don
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