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    SubjectRe: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu access overhead
    From
    From: Christoph Lameter <clameter@sgi.com>
    Date: Wed, 31 Oct 2007 18:21:02 -0700 (PDT)

    > 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?

    Right.

    I bisected the crash down to:

    [PATCH] newallocpercpu
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