linux-kernel - Re: [PATCH 0/8] watchdog: Add support for keepalives triggered by infrastructure

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Message-ID: <20150804112431.GK9999@pengutronix.de>
Date:	Tue, 4 Aug 2015 13:24:31 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	linux-watchdog@...r.kernel.org, Wim Van Sebroeck <wim@...ana.be>,
	linux-kernel@...r.kernel.org,
	Timo Kokkonen <timo.kokkonen@...code.fi>,
	linux-doc@...r.kernel.org, Jonathan Corbet <corbet@....net>
Subject: Re: [PATCH 0/8] watchdog: Add support for keepalives triggered by
 infrastructure

Hello Guenter,

On Mon, Aug 03, 2015 at 07:13:26PM -0700, Guenter Roeck wrote:
> This patch set does not solve all limitations of the watchdog subsystem.
> Specifically, it does not add support for the following features.
> 
> - It is desirable to be able to specify a maximum early timeout,
>   from booting the system to opening the watchdog device.
> - Some watchdogs may require a minimum period of time between
>   heartbeats. Examples are DA9062 and possibly AT91SAM9x.

Other things that come to my mind:
 - move handling of nowayout into the core
 - some drivers use a reboot notifier. Not sure what they are intended
   to do there. For i.MX2x it triggers a reboot; for gpio-wdt it tries
   to stop the watchdog.

Of course this doesn't mean this should addressed here. I like the
series in general.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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