From: Daniel Walker <dwalker@fifo99.com>
To: Jeff Ohlstein <johlstei@codeaurora.org>
Cc: 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: Wed, 30 Mar 2011 09:03:26 -0700 [thread overview]
Message-ID: <1301501006.5346.2.camel@m0nster> (raw)
In-Reply-To: <4D92B43B.5050101@codeaurora.org>
On Tue, 2011-03-29 at 21:40 -0700, Jeff Ohlstein wrote:
> Daniel Walker wrote:
> > Are you saying this is mostly a debugging facility ? The interrupts off
> > thing I can see as just debugging, but I don't understand the bus
> > lockups part.
> >
>
> It isn't just a debugging facility. It is still beneficial to the end user
> in that it restarts the system if there is a bus lockup or a faulty
> interrupt
> handler in a rarely used codepath. This is better than the alternative
> of draining
> the battery and turning off. We want this to be turned on independent of
> what userspace
> one is using, unless they explicitly turn it off themselves.
It doesn't sound too different that all the other watchdogs in
drivers/watchdog/ .. Your just detecting lockups right?
Daniel
WARNING: multiple messages have this Message-ID (diff)
From: dwalker@fifo99.com (Daniel Walker)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] msm: watchdog: support watchdog on 8x60 and 8960
Date: Wed, 30 Mar 2011 09:03:26 -0700 [thread overview]
Message-ID: <1301501006.5346.2.camel@m0nster> (raw)
In-Reply-To: <4D92B43B.5050101@codeaurora.org>
On Tue, 2011-03-29 at 21:40 -0700, Jeff Ohlstein wrote:
> Daniel Walker wrote:
> > Are you saying this is mostly a debugging facility ? The interrupts off
> > thing I can see as just debugging, but I don't understand the bus
> > lockups part.
> >
>
> It isn't just a debugging facility. It is still beneficial to the end user
> in that it restarts the system if there is a bus lockup or a faulty
> interrupt
> handler in a rarely used codepath. This is better than the alternative
> of draining
> the battery and turning off. We want this to be turned on independent of
> what userspace
> one is using, unless they explicitly turn it off themselves.
It doesn't sound too different that all the other watchdogs in
drivers/watchdog/ .. Your just detecting lockups right?
Daniel
next prev parent reply other threads:[~2011-03-30 16:03 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 [this message]
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
2011-04-28 17:19 ` Pavel Machek
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