Messages in this thread | | | Date | Fri, 29 Oct 2004 19:09:48 +0200 | From | Ingo Molnar <> | Subject | Re: [Fwd: Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.4] |
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* Ingo Molnar <mingo@elte.hu> wrote:
> > > let me try some more hacks to make this a little bit safer. > > > > hehe, it even booted for me [kinda]. will build the one where you got > > xmms to run. but i will sure as hell hit "get new emails" during the > > build more than once ;) > > indeed - i'm preparing 5.0.12 with a better way to do this. (the trick > is to allow the BKL to 'underflow' - this way ALSA can be kept largely > unmodified.)
ok, i've uploaded -V0.5.12 which has this BKL trick. I hope i got the ALSA ioctls right: the ones that go outside the BKL for now are the pcm_native playback/capture ones, and rawmidi's ioctl. All the others are still BKL users. To recap, it's these ioctls that matter:
5971 ioctl(7, 0x4143, 0x446b7d3c) = 0 5971 ioctl(7, 0x4140, 0x446b7d3c) = 0 5971 ioctl(7, 0x4142, 0x446b7d3c) = 0
which ones are these? Look at the patch for how to change a .ioctl one to .ioctl_nobkl (lame solution ...). So if your setup uses any other ioctl (sndctl perhaps?) then you should change that one to nobkl too.
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