On Tue, 11 Nov 2008 14:10:39 +0000 David Woodhouse <[EMAIL PROTECTED]> wrote:
> You might do better to open the device once and keep it open, rather > than taking the mutex and opening it again _during_ each call? You're > going to be perturbing the timing by doing that. If you keep it open no other in-kernel user would be able to use it. > I believe you were also concerned that some device wouldn't want the > behaviour given by the existing sync_cmos_clock() function and workqueue > stuff in kernel/ntp.c, where we update the clock precisely half-way > through the second? > > We should probably rip that code out of ntp.c (or just disable it ifdef > CONFIG_RTC_CLASS), and provide our own version of notify_cmos_timer(). > > The workqueue stuff to trigger at half-past the second could be kept as > a library function which most RTC devices would use, but they'd have the > option to use their own instead. I'll give it a look. -- Best regards, Alessandro Zummo, Tower Technologies - Torino, Italy http://www.towertech.it _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
