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    SubjectRe: [PATCH 0/11] Generic smp_call_function() and friends
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    On Tue, 2008-04-22 at 09:57 +0200, Jens Axboe wrote:
    > Hi,
    >
    > While working on the more scalable and faster
    > smp_call_function_single(), the amount of arch duplicated code in there
    > botherered me. So I started adding a generic kernel/smp.c helper that
    > the archs could use instead.
    >
    > Arch code exports two helper functions:
    >
    > arch_send_call_function_single_ipi(cpu)
    > Send call function single ipi to given cpu
    > arch_send_call_function_ipi(cpumask)
    > Send call function ipi to cpus in cpumask
    >
    > and then use the generic ipi interrupt helpers to execute the code. I
    > converted most of the archs capable of SMP, I think only sparc and
    > sparc64 are still missing. Archs set CONFIG_GENERIC_SMP_HELPERS if they
    > wish to use the generic helpers for this.
    >
    > The end result is that we have unified code for handling ipi for
    > function calls. Even with adding special handling for the single cpu
    > function call, the diffstat is pretty nice (see below.

    Real nice work Jens!



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