Messages in this thread | | | Date | Wed, 16 Jul 2014 13:34:21 +0200 | From | Clemens Ladisch <> | Subject | Re: firewire: CLOCK_MONOTONIC_RAW exposure |
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Thomas Gleixner wrote: > I wonder why firewire exposed CLOCK_MONOTONIC_RAW to user space. > > What's the purpose of that? CLOCK_MONOTONIC_RAW is the raw time based > on the initial frequency setup of the clocksource. That can be quite > off from the NTP corrected frequency which is exposed by > CLOCK_MONOTONIC.
The purpose is to get a stable clock, i.e., to avoid clock rate changes caused by NTP corrections.
ALSA is adding CLOCK_MONOTONIC_RAW for the same reason.
Regards, Clemens
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