Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu access overhead

Christoph Lameter
2007-11-01T01:21:18Z

On Wed, 31 Oct 2007, David Miller wrote:

> From: Christoph Lameter <clameter@sgi.com>
> Date: Wed, 31 Oct 2007 18:12:11 -0700 (PDT)
>
> > On Wed, 31 Oct 2007, David Miller wrote:
> >
> > > All I can do now is bisect and then try to figure out what about the
> > > guilty change might cause the problem.
> >
> > Reverting the 7th patch should avoid using the sparc register that caches
> > the per cpu area offset? (I though so, does it?)
>
> Yes, that's right, %g5 holds the local cpu's per-cpu offset.

And if I add the address of a percpu variable then I get to the variable
for this cpu right?