linux-kernel - Re: [PATCH v7 0/9] watchdog: Add support for keepalives triggered by infrastructure

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Message-ID: <20160126080904.GV3338@pengutronix.de>
Date:	Tue, 26 Jan 2016 09:09:04 +0100
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Guenter Roeck <patchwork@...chwork.roeck-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, Doug Anderson <dianders@...omium.org>,
	Jonathan Corbet <corbet@....net>,
	Guenter Roeck <linux@...ck-us.net>
Subject: Re: [PATCH v7 0/9] watchdog: Add support for keepalives triggered by
 infrastructure

Hello Guenter,

On Mon, Jan 25, 2016 at 06:53:07PM -0800, Guenter Roeck wrote:
> Patch #1 adds timer functionality to the watchdog core. It solves the problem
> of short maximum hardware timeouts by augmenting heartbeats triggered from
> user space with internally triggered heartbeats.
> 
> Patch #2 adds functionality to generate heartbeats while the watchdog device
> is closed. It handles situation where where the watchdog is running after
> the driver has been instantiated, but the device is not yet opened,
> and post-close situations necessary if a watchdog can not be stopped.
> 
> Patch #3 makes the set_timeout function optional. This is now possible since
> timeout changes can now be completely handled in the watchdog core, for
> example if the hardware watchdog timeout is fixed.
> 
> Patch #4 adds code to ensure that the minimum time between heartbeats meets
> constraints provided by the watchdog driver.
> 
> Patch #5 simplifies the watchdog_update_worker() function introduced with
> patch #1 to only take a single argument, and to always cancel any pending
> work if a worker is not or no longer needed. This patch is kept as separate
> patch on purpose, to enable dropping or reverting it easily if it causes
> any problems. It should not cause any problems; this is just out of an
> abundance of caution.

Acked-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de> for patches
1-5.

Best regards
Uwe

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