[PlanetCCRMA] Configuring 2.6.11-0.3.rdt.rhfc2.ccrma for 0 xruns...

[Rui Nuno Capela]

>
> Correct me if I'm wrong, the planet-edge kernels are configured as
> PREEMPT_DESKTOP ?
>
> OK. I'll check if I can remember how to unthread the snd related IRQs. For
> example, on my PREEMPT_RT machines I have nothing found as
> "/proc/irq/*/*/threaded" . May I assume that if "/proc/irq/*/*/threaded"
> is found we are under a PREEMPT_DESKTOP kernel, and then we can do the
> deeds:
>   for x in "/proc/irq/$IRQ/*/threaded"; do echo 0 > "$x"; done
> ?
>
>
>>> I'll be trying 64/2 in a few minutes.
>>>
>>> This can be set in rc.local, etc. and works every time I boot up on my
>>> laptop.
>>
>> The threaded stuff? Yes, I guess it could go there. It would be best to
>> incorporate it into rtirq, of course.
>>
>
> I think I'll blind check this and introduce a new rtirq configuration
> switch as an option whether "snd" IRQs should be threaded or not. Default
> should be threaded, I guess.
>

OK. That's it. Here goes a new rtirq tarball (rtirq-20050414.tar.gz) with
this new configuration option:

  RTIRQ_NON_THREADED="rtc snd"

where one tells which IRQ handler services are to be left NOT threaded
when rtirq start is issued. Default goes for the realtime clock (rtc) and
every ALSA sound driver (snd).

NOTE: This has been NOT tested, as I have no PREEMPT_DESKTOP kernel near
me ;)

Cheers.
-- 
rncbc aka Rui Nuno Capela
rncbc at rncbc.org
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