Re: [Freebob-devel] [linux-audio-dev] ieee1394 deadlock on RT kernels

From: Lee Revell <rlrevell@email-addr-hidden-job.com>
Date: Tue Jun 27 2006 - 22:30:20 EEST

On Tue, 2006-06-27 at 21:20 +0200, Pieter Palmers wrote:
> Lee Revell wrote:
> > On Mon, 2006-06-26 at 22:35 +0200, Pieter Palmers wrote:
> >> Another strange thing is: why doesn't the tasklet finish, so that it
> >> can be 'unscheduled'? I have my IRQ priorities higher than any other
> >> RT threads, so I would expect that the tasklet can finish. Or is
> >> tasklet_kill not-preemtible? that would be very strange as I would
> >> expect that busy waiting on something in a non-preemptible code path
> >> on a single-cpu system always deadlocks.
> >
> > When are you going to report this to Ingo + LKML + the other -rt
> > developers?
> >
> After I do the printk testing to pinpoint the problem a little more
> precise (as you suggested yesterday).
>
> However, I didn't feel like iterating through the recompile
> kernel/crash/reboot cycle even more yesterday.
>
> Is there any underlying reason for this question?

Only that you seem to have found a bug in -rt and I'd like to get it
fixed.

Lee
Received on Wed Jun 28 00:15:06 2006

This archive was generated by hypermail 2.1.8 : Wed Jun 28 2006 - 00:15:06 EEST