Re: [linux-audio-dev] low-latency scheduling patch for 2.4.0

george anzinger
2001-01-15T06:09:27Z

"David S. Miller" wrote:
>
> Nigel Gamble writes:
> > That's why MontaVista's kernel preemption patch uses sleeping mutex
> > locks instead of spinlocks for the long held locks.
>
> Anyone who uses sleeping mutex locks is asking for trouble. Priority
> inversion is an issue I dearly hope we never have to deal with in the
> Linux kernel, and sleeping SMP mutex locks lead to exactly this kind
> of problem.
>
Exactly why we are going to us priority inherit mutexes. This handles
the inversion nicely.

George