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    SubjectRe: [PATCH] Run PCI driver initialization on local node
    On Wed, Jul 06, 2005 at 11:01:14AM -0700, Christoph Lameter wrote:
    > On Wed, 6 Jul 2005, Andi Kleen wrote:
    >
    > > On Wed, Jul 06, 2005 at 09:35:32AM -0700, Christoph Lameter wrote:
    > > > On Wed, 6 Jul 2005, Andi Kleen wrote:
    > > >
    > > > > Instead of adding messy kmalloc_node()s everywhere run the
    > > > > PCI driver probe on the node local to the device.
    > > > > Then the normal NUMA aware allocators do the right thing.
    > > >
    > > > That depends on the architecture. Some do round robin allocs for periods
    > > > of time during bootup. I think it is better to explicitly place control
    > >
    > > slab will usually do the right thing because it has a forced
    > > local node policy, but __gfp might not.
    >
    > GFP allocs may not do the right thing. If you want to do this then it
    > may be best to set the memory policy to restrict allocations to the node
    > on which the device resides.

    They will do the right thing. Under memory pressue on the node
    it is better to back off than to fail.

    >
    > Plus there are CPU less nodes. What happens to those?

    They are not worse off that they are now.

    >
    > > Patching every driver in existence? That sounds like a lot of
    > > work.
    >
    > No just patch those that would benefit from it. The existing

    This would be "all devices that SGI ships on Altixes" ?

    IMHO all can benefit.

    -Andi
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