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Message-ID: <50F5B29A.7050703@linaro.org>
Date: Tue, 15 Jan 2013 11:48:42 -0800
From: John Stultz <john.stultz@linaro.org>
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To: Feng Tang <feng.tang@intel.com>
CC: Thomas Gleixner <tglx@linutronix.de>,
        Alessandro Zummo <a.zummo@towertech.it>, linux-kernel@vger.kernel.org,
        Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Subject: Re: [PATCH v2 1/3] timekeeping: Add persistent_clock_exist flag
References: <1358266189-8812-1-git-send-email-feng.tang@intel.com>
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On 01/15/2013 08:09 AM, Feng Tang wrote:
> In current kernel, there are several places which need to check
> whether there is a persistent clock for the platform. Current check
> is done by calling the read_persistent_clock() and validating its
> return value.
>
> So one optimization is to do the check only once in timekeeping_init(),
> and use a flag persistent_clock_exist to record it.
>
> v2: Add a has_persistent_clock() helper function, as suggested by John.

Applied! Thanks
-john