Re: [PATCH v3 1/4] Add correlated clocksource deriving system time from an auxiliary clocksource

From: Richard Cochran
Date: Fri Sep 04 2015 - 04:11:39 EST

On Thu, Sep 03, 2015 at 11:20:37PM +0000, Hall, Christopher S wrote:
> In addition to the network interface, ART will be used in the audio interface as well.
> We need to support the case where an audio co-processor will control the audio device.
> In this case, the get_ts() function supplied by the audio driver will be very slow
> (several milliseconds) and the result will be out of date by some fraction of that
> amount.

Why does it take milliseconds to read one audio time stamp?

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