Messages in this thread | | | Subject | Re: [patch] voluntary-preempt-2.6.9-rc1-bk4-Q1 | From | Fernando Pablo Lopez-Lezcano <> | Date | 29 Aug 2004 18:06:28 -0700 |
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On Sat, 2004-08-28 at 06:01, Ingo Molnar wrote: > * Ingo Molnar <mingo@elte.hu> wrote: > > > * Scott Wood <scott@timesys.com> wrote: > > > > > If I'm missing something, please let me know, but I don't see a good > > > way to implement it without blocking for the IRQ thread's completion > > > (such as with the per-IRQ waitqueues in M5). > > > > agreed, this is a hole in generic_synchronize_irq(). I've added > > handler-completion waitqueues to my current tree, it will show up in > > -Q1. > > i've uploaded -Q1: > > http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc1-bk4-Q1 > > as with -Q0, the following patch has to be applied to 2.6.8.1 first: > > http://redhat.com/~mingo/voluntary-preempt/diff-bk-040828-2.6.8.1.bz2 > > those who still have DRI problems under -Q1 - please unapply the > drm_os_linux.h change, does the fix the lockups?
I managed to do a few quick tests yesterday of voluntary Q3:
SMP kernel on UP machine (Athlon64): hangs during boot, goes a little further than before but hangs anyway:
requesting new irq thread for IRQ169 ata1: dev 0 ATA, max UDMA/133 ... IRQ#169 thread started up ata1: dev 0 configured for UDMA/133 ... scsi0: sata_promise ata2: dev 0 ATA ... --- hangs ---
SMP kernel on SMP machine (dual Athlon): softirq-preempt=0 hardirq-preempt=0 acpi=on: hangs afaik hang happens when something needs interrupts, first culprit in my machine is eth0, if I disable it I can go further ahead and boot but alsa has timeouts, presumably because it is not getting interrupts. softirq-preempt=0 hardirq-preempt=0 acpi=off: boots normally, jack, glxgears work fine (but high latency spikes) softirq-preempt=1 hardirq-preempt=1 acpi=off: boots normally, jack works fine, glxgears hangs machine after a while Sorry I was not able to check all permutations, I was late and stopped rebooting the machine :-) I think I did one more test with sort=1, hard=1, acpi=off and did not manage to hang the machine.
-- Fernando
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