Re: cvs commit: src/sys/dev/sound/pcm channel.c dsp.c dsp.h mixer.c sound.c sound.h vchan.c

["Simon 'corecode' Schubert" <corecode@xxxxxxxxxxxx>]

Matthew Dillon wrote:
> :We should think if we can switch our locking to use lockmgr locks, becaus=
> :e uaudio is taking some code paths which block and thus panic when using =
> :spinlocks.
>     Hmm.  I think we will have to use the serializer, actually, and
>     not a lockmgr lock, because a lot of that code runs from an
>     interrupt thread and we really do not want to block interrupt
>     threads.   i.e. similar to what we do with NETIF.

Problem is that there is some fine grained locking going on (mixer, channel, device) which can't be easily covered by a serializer which gets aquired on a interrupt.  we might have to rewrite the locking.

cheers
 simon

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