On Fri, Jan 05, 2007 at 07:49:00PM -0800, David Brownell wrote:
> > Those rtc's actually have a 1/100th of second
> > register. Should the generic rtc interface not support that?
>
> Are you implying a new userspace API, or just an in-kernel update?
My only concern at the moment is initializing linux's timeofday from the rtc
quickly and with a good precision. The way it is done currently
in drivers/rtc/hctosys.c is 0.5 sec off. We could obtain a much better
precision by looping there until the next change (next second for old clocks,
next 0.01 second for m41t81, maybe even better for other ones).
>
> Either way, that raises the question of what other features should
> be included. What sub-second precision? Multiple alarms? Ways
> to manage output clocks? Sub-HZ periodic alarms?
I cannot answer that, but others may have other needs.
Philippe
--
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
