"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
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This archive was generated by hypermail 2b29 : Mon Jan 15 2001 - 21:00:40 EST