On 1 October 2011 15:21, Jayachandran C. <jchan...@freebsd.org> wrote:
> I would like to understand this, reverting r216862 would take out the > critical_enter() and cpu_idleclock() which would keep the timer > interrupts coming is as usual, this should not affect the event timer. Because the fundamental problem still exists w/out preemption - netisr/taskqueue scheduling doesn't happen if it happens just before the wait call. I haven't verified that mav's timer stuff does the correct thing by configuring the clock timer to occur every 1000hz in this instance. I kinda hope so. If I flip on preemption, then this may be fixed, but flipping on preemption causes other issues on the single-core MIPS boards that I've used when doing high-throughput 11n NIC testing. I don't (yet) know why. In any case, I think it's worth writing per-platform/per-chip cpu_idle() functions and set it up at boot/probe time. I'll happy do it if you're happy to do the digging with XLR to ensure this is all handled accurately in that instance. I just don't have the deep MIPS clue needed to ensure this is all correct and noone really piped up to come up with a better solution. I really want to see this all work correctly. :) Adrian _______________________________________________ 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"
