Preemption question (4xx related)

[Benjamin Herrenschmidt]

On Tue, 2009-06-30 at 05:55 -0700, Felix Radensky wrote:
> Hi,
> 
> Preemption is disabled on the vast majority of powerpc
> targets. Are there any known problems in this area ?
> I'd like to enable CONFIG_PREEMPT_VOLUNTARY on
> AMCC 405EX target, to increase application responsiveness.
> Is it a bad idea ?

In theory it should work, but as you may have noticed, it's generally
disabled and thus not very well tested.

It would be a good idea for us, some of the core devs, to turn that on
in our usual test configs in fact.

Cheers,
Ben.