Marcel Moolenaar wrote: > On Jun 22, 2011, at 5:30 PM, Alexander Motin wrote: >> Marcel Moolenaar wrote: >>> On Jun 22, 2011, at 4:24 PM, Jung-uk Kim wrote: >>>> I just realized kern_clocksource.c was excluded for arm and ia64. >>>> Here is updated patch. Please ignore the previous one. >>> Any reason why we're not adding kern_clocksource.c for them? >> Their event timers code still waits for refactoring. I have neither >> documentation nor hardware for them. Help would be appreciated. > > Can you give me a pointer to a document orpage that describes > what is being refactored, why and how?
In short, timer management code was unified and formalized. Instead of direct programming periodic timers from MD code and calling hard-/ stat-/ profclock() from there, timer hardware should be exposed to the MI kernel using sys/timeet.h API to allow kern_clocksource.c manage it. Last require calling its cpu_initclocks_bsp() and cpu_initclocks_ap() callbacks from MD initialization code, and cpu_idleclock() and cpu_activeclock() from MD cpu_idle(). Here is some references: man 4 eventtimers http://wiki.freebsd.org/201010DevSummit?action=AttachFile&do=view&target=timers.pdf http://svnweb.freebsd.org/base?view=revision&revision=209371 http://svnweb.freebsd.org/base?view=revision&revision=212541 All architectures except ia64 and non-Marvell arm are already done, so you may took any of them as reference. Ask me if you have any questions. -- Alexander Motin _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
