linux-kernel - Re: [PATCH 0/8] MSM timer fixes and cleanups

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Message-ID: <20111110183321.GA16832@huya.qualcomm.com>
Date:	Thu, 10 Nov 2011 10:33:21 -0800
From:	David Brown <davidb@...eaurora.org>
To:	Stephen Boyd <sboyd@...eaurora.org>
Cc:	David Brown <davidb@...eaurora.org>, linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Marc Zyngier <marc.zyngier@....com>
Subject: Re: [PATCH 0/8] MSM timer fixes and cleanups

On Tue, Nov 08, 2011 at 10:34:02AM -0800, Stephen Boyd wrote:
> Currently the MSM timers use the same physical counter
> for the clockevent and clocksource. This works as long
> as the clocksource isn't stopped from ticking during normal
> operation but unfortunately that isn't the case and the
> clocksource is stopped when the clockevent is shutdown.
> Even worse, switching the clocksource via sysfs at runtime will
> hang the system.
> 
> This series reorganizes the MSM timer code so that one counter
> is only used for either a clocksource or a clockevent, and not 
> both. In the process we reduce the lines of code and fix
> a few long-standing bugs.

How do you test these on the upstream kernel?  Booting successfully is
probably a good starting point, though.

David

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