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

[David S. Miller]

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.

Later,
David S. Miller
[e-mail]