From: John Stultz <john.stultz@linaro.org>
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
Date: Tue, 15 Jan 2013 11:48:42 -0800 [thread overview]
Message-ID: <50F5B29A.7050703@linaro.org> (raw)
In-Reply-To: <1358266189-8812-1-git-send-email-feng.tang@intel.com>
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
prev parent reply other threads:[~2013-01-15 19:48 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-15 16:09 [PATCH v2 1/3] timekeeping: Add persistent_clock_exist flag Feng Tang
2013-01-15 16:09 ` [PATCH v2 2/3] rtc: Skip the suspend/resume handling if persistent clock exist Feng Tang
2013-01-15 19:49 ` John Stultz
2013-01-15 16:09 ` [PATCH v2 3/3] timekeeping: Add CONFIG_HAS_PERSISTENT_CLOCK option Feng Tang
2013-01-15 19:50 ` John Stultz
2013-01-22 19:44 ` Jason Gunthorpe
2013-01-22 19:49 ` John Stultz
2013-01-26 1:07 ` John Stultz
2013-01-15 19:48 ` John Stultz [this message]
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