Re: [patch 28/28] posix clocks: Introduce dynamic clocks

From: john stultz
Date: Tue Feb 01 2011 - 16:49:56 EST


On Tue, 2011-02-01 at 13:52 +0000, Thomas Gleixner wrote:
> plain text document attachment
> (posix-clocks-introduce-dynamic-clocks.patch)
> From: Richard Cochran <richardcochran@xxxxxxxxx>
>
> This patch adds support for adding and removing posix clocks. The
> clock lifetime cycle is patterned after usb devices. Each clock is
> represented by a standard character device. In addition, the driver
> may optionally implement custom character device operations.
>
> The posix clock and timer system calls listed below now work with
> dynamic posix clocks, as well as the traditional static clocks.
> The following system calls are affected:
>
> - clock_adjtime (brand new syscall)
> - clock_gettime
> - clock_getres
> - clock_settime
> - timer_create
> - timer_delete
> - timer_gettime
> - timer_settime
>
> [ tglx: Adapted to the posix-timer cleanup. Moved clock_posix_dynamic
> to posix-clock.c and made all referenced functions static ]

I sort of worry about the naming collision with the term posix-clock, as
this is just one type of posix clock (I suspect most folks think of a
posix clock as the clockid passed to the existing posix api).

Could we maybe use posix-dynclock or posix-fdclock or something? I know
its already been changed from clkdev, so sorry for being finicky here
and not catching this earlier.

thanks
-john


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