[LAU] hdsp not happy with recent kernels

[peter at peterlutek.com]

> did some observing...
> when i put snd_hdsp in the RTIRQ_NAME_LIST in the rtirq config, neither
priorities nor IRQs change. however...
> for ALL kernels under which jack fails:
> /etc/init.d/rtirq status
> shows irq/19-snd_hdsp AND irq/19-firewire
> and for the one kernel under which jack works:
> /etc/init.d/rtirq status
> shows irq/19-snd_hdsp and a DIFFERENT irq for firewire
> this seems significant.
> and... how can i ensure firewire gets a different irq?
> for now, i'll try killing the  firewire module, since i don't use
anything
> firewire at the moment.
> cheers!
> .pltk.

experiment results:

on a 3.5-3 kernel, after killing firewire modules, rtirq status is:

  PID CLS RTPRIO  NI PRI %CPU STAT COMMAND
   45 FF      90   - 130  0.0 S    irq/8-rtc0
  757 FF      85   - 125  0.0 S    irq/19-snd_hdsp
  767 FF      80   - 120  0.0 S    irq/44-snd_hda_
  235 FF      75   - 115  0.0 S    irq/16-ehci_hcd
  236 FF      74   - 114  0.0 S    irq/23-ehci_hcd
   44 FF      70   - 110  0.0 S    irq/1-i8042
   43 FF      69   - 109  0.1 S    irq/12-i8042
   32 FF      50   -  90  0.0 S    irq/9-acpi
  233 FF      50   -  90  0.0 S    irq/16-mmc0
  239 FF      50   -  90  0.8 S    irq/41-ahci
  641 FF      50   -  90  0.0 S    irq/42-mei
  708 FF      50   -  90  0.0 S    irq/17-rtlwifi
  716 FF      50   -  90  0.0 S    irq/43-i915
 2371 FF      50   -  90  0.0 S    irq/40-eth0
    3 TS       -   0  19  0.2 S    ksoftirqd/0
   15 TS       -   0  19  0.1 S    ksoftirqd/1
   19 TS       -   0  19  0.1 S    ksoftirqd/2
   23 TS       -   0  19  0.1 S    ksoftirqd/3

...and after my script which kills other unneeded things:

  PID CLS RTPRIO  NI PRI %CPU STAT COMMAND
   45 FF      90   - 130  0.0 S    irq/8-rtc0
  757 FF      85   - 125  0.0 S    irq/19-snd_hdsp
  235 FF      75   - 115  0.0 S    irq/16-ehci_hcd
  236 FF      74   - 114  0.0 S    irq/23-ehci_hcd
   44 FF      70   - 110  0.0 S    irq/1-i8042
   43 FF      69   - 109  0.1 S    irq/12-i8042
   32 FF      50   -  90  0.0 S    irq/9-acpi
  233 FF      50   -  90  0.0 S    irq/16-mmc0
  239 FF      50   -  90  0.5 S    irq/41-ahci
  641 FF      50   -  90  0.0 S    irq/42-mei
  716 FF      50   -  90  0.0 S    irq/43-i915
 2371 FF      50   -  90  0.0 S    irq/40-eth0
    3 TS       -   0  19  0.1 S    ksoftirqd/0
   15 TS       -   0  19  0.1 S    ksoftirqd/1
   19 TS       -   0  19  0.1 S    ksoftirqd/2
   23 TS       -   0  19  0.0 R    ksoftirqd/3

...then, jack still fails. same story for the 3.2.0 kernel.

so, avoiding the irq conflict by unloading firewire modules doesn't solve
the problem. mrph.

??????????

cheers!
.pltk.