Re: [PATCH 0/2] [RFC] posix clock tuning

Thomas Gleixner
2010-09-09T12:50:57Z

On Thu, 9 Sep 2010, Richard Cochran wrote:
> From my point of view, the discussion is going round in circles. There

Sorry for coming late and adding more to the general confusion. :)

> seems to be agreement that supporting PTP hardware clocks is a good
> idea. The objections seem to be about the form of the API. In general,
> there are three avenues.
>
> 1. character device (like hpet)
> 2. posix clock api
> 3. sysfs
>
> Or possibly some combination of the three.

I fail to see the requirement for any of those. Either the hardware
clock is suitable as a clocksource for general consumption, then it
should just be used as a clock source. If it's not - e.g. because it's
too slow to access - then it just should serve as a reference in the
NTP style and steer the timekeeping into sync.

As I said in the other reply, I know that you want a global
synchronized clock aside of CLOCK_REALTIME, but that's an easy to
solve problem.

See my other reply for details.

Thanks,

tglx