From: Pavel Machek <pavel@ucw.cz>
To: Jamie Iles <jamie@jamieiles.com>
Cc: Daniel Walker <dwalker@fifo99.com>,
Jeff Ohlstein <johlstei@codeaurora.org>,
Bryan Huntsman <bryanh@codeaurora.org>,
David Brown <davidb@codeaurora.org>,
linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Russell King <linux@arm.linux.org.uk>,
Stepan Moskovchenko <stepanm@codeaurora.org>,
Gregory Bean <gbean@codeaurora.org>,
Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Subject: Re: [PATCH] msm: watchdog: support watchdog on 8x60 and 8960
Date: Thu, 28 Apr 2011 17:19:10 +0000 [thread overview]
Message-ID: <20110428171909.GC7345@localhost.ucw.cz> (raw)
In-Reply-To: <20110330161419.GB28252@pulham.picochip.com>
> > It doesn't sound too different that all the other watchdogs in
> > drivers/watchdog/ .. Your just detecting lockups right?
>
> There are some watchdogs in there such as
> drivers/watchdog/at91sam9_wdt.c that can't be stopped once enabled so
> the driver sets up a soft timer in the kernel that kicks the watchdog to
> prevent the system rebooting.
>
> With this approach you could have the watchdog always enabled and being
> kicked even if the userspace daemon wasn't running, but with the
> flexibility of kicking it from userspace if you wanted.
sounds like a way to do it.
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
WARNING: multiple messages have this Message-ID (diff)
From: pavel@ucw.cz (Pavel Machek)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] msm: watchdog: support watchdog on 8x60 and 8960
Date: Thu, 28 Apr 2011 17:19:10 +0000 [thread overview]
Message-ID: <20110428171909.GC7345@localhost.ucw.cz> (raw)
In-Reply-To: <20110330161419.GB28252@pulham.picochip.com>
> > It doesn't sound too different that all the other watchdogs in
> > drivers/watchdog/ .. Your just detecting lockups right?
>
> There are some watchdogs in there such as
> drivers/watchdog/at91sam9_wdt.c that can't be stopped once enabled so
> the driver sets up a soft timer in the kernel that kicks the watchdog to
> prevent the system rebooting.
>
> With this approach you could have the watchdog always enabled and being
> kicked even if the userspace daemon wasn't running, but with the
> flexibility of kicking it from userspace if you wanted.
sounds like a way to do it.
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2011-04-28 17:19 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-26 2:18 [PATCH] msm: watchdog: support watchdog on 8x60 and 8960 Jeff Ohlstein
2011-03-26 2:18 ` Jeff Ohlstein
2011-03-29 19:22 ` Daniel Walker
2011-03-29 19:22 ` Daniel Walker
2011-03-30 4:40 ` Jeff Ohlstein
2011-03-30 4:40 ` Jeff Ohlstein
2011-03-30 16:03 ` Daniel Walker
2011-03-30 16:03 ` Daniel Walker
2011-03-30 16:14 ` Jamie Iles
2011-03-30 16:14 ` Jamie Iles
2011-04-28 17:19 ` Pavel Machek [this message]
2011-04-28 17:19 ` Pavel Machek
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