Re: [PATCH v2 1/3] timekeeping: Add persistent_clock_exist flag

From: John Stultz
Date: Tue Jan 15 2013 - 14:48:31 EST


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

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