Preemption question (4xx related)

[Josh Boyer]

On Thu, Jul 02, 2009 at 05:33:12PM +1000, Benjamin Herrenschmidt wrote:
>On Wed, 2009-07-01 at 20:14 -0400, Josh Boyer wrote:
>
>> I've toyed with that idea myself.  I keep coming back to the fact that you need
>> a workload that would really leverage it, and I don't have one at the moment.
>
>To some extent that's true but just turning full preemption including
>kernel side with all the associated debug bits and lockdep should make a
>whole bunch of things show up even with ordinary workloads.

I can look at doing that for ppc44x_defconfig.  I'll be honest and say I don't
expect it to go well, particularly with lockdep :).

>For 440 tend to boot an ubuntu distro off NFS root with all X & DRI 3D
>etc... and then run compiz :-)

Yes.  Because that's a totally realistic workload for a 440.  I'm surprised you
don't have a p595 machine acting as your home router too!  ;)

josh