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    SubjectRe: Add prefetch switch stack hook in scheduler function
    Keith Owens wrote:
    > On Thu, 28 Jul 2005 09:41:18 +0200,
    > Ingo Molnar <mingo@elte.hu> wrote:

    >>i'm wondering, is the switch_stack at the same/similar place as
    >>next->thread_info? If yes then we could simply do a
    >>prefetch(next->thread_info).
    >
    >
    > No, they can be up to 30K apart. See include/asm-ia64/ptrace.h.
    > thread_info is at ~0xda0, depending on the config. The switch_stack
    > can be as high as 0x7bd0 in the kernel stack, depending on why the task
    > is sleeping.
    >

    Just a minor point, I agree with David: I'd like it to be called
    prefetch_task(), because some architecture may want to prefetch other
    memory.

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    SUSE Labs, Novell Inc.

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