Hi. Daan Vreeken wrote: > On Monday 13 September 2010 09:25:35 Alexander Motin wrote: >> Author: mav >> Date: Mon Sep 13 07:25:35 2010 >> New Revision: 212541 >> URL: http://svn.freebsd.org/changeset/base/212541 >> >> Log: >> Refactor timer management code with priority to one-shot operation mode. >> The main goal of this is to generate timer interrupts only when there is >> some work to do. When CPU is busy interrupts are generating at full rate >> of hz + stathz to fullfill scheduler and timekeeping requirements. But >> when CPU is idle, only minimum set of interrupts (down to 8 interrupts >> per second per CPU now), needed to handle scheduled callouts is executed. >> This allows significantly increase idle CPU sleep time, increasing effect >> of static power-saving technologies. Also it should reduce host CPU load on >> virtualized systems, when guest system is idle. > [snip] > > When re-basing an ARM system running an older -current with local > patches/additions to a more recent version of -current (around > 2010-09-16-ish) I found out that the resulting kernel stopped booting. > To factor out our local changes I've tried to boot a 'SHEEVAPLUG' kernel > without modifications. This kernel also fails to boot. It just stops right > after : > > Can you perhaps tell me what's going wrong after this commit? > (If you need more info, I'd be happy to provide it where I can.)
Sorry. Timer interrupt loss in one-shot mode made timer to not reload. r212823 fixes this problem for me. -- Alexander Motin _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
