Re: firewire: CLOCK_MONOTONIC_RAW exposure

[Clemens Ladisch]

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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