On Mon, 13 Aug 2007 20:51:39 +0200, Franck Bui-Huu <vagabon.xyz@xxxxxxxxx> wrote:
> Well a more general question could be how is the RTC class layer
> supposed to interact with the kernel ?
>
> Should RTC class layer implement a general service to update/read the
> RTC, IOW should it implement {read,update}_persistent_clock() ?
Some difficulties are:
* timekeeping subsystem calls {read,update}_persistent_clock() with
irq-disabled. But most RTC class routines might sleep.
* RTC class can have multiple RTCs on the system.
* There are already some conflicting features in RTC class ---
rtc_suspend and rtc_resume try to adjust the wall clock.
* IIRC Some people said "NTP sync can be done all in userland" ;-)
Does anybody know if there was "general consensus" on this topic?
---
Atsushi Nemoto
