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    SubjectRe: [PATCH] adjust root-domain->online span in response to hotplugevent
    Dmitry Adamushko wrote:
    > On 08/03/2008, Gregory Haskins <ghaskins@novell.com> wrote:
    >
    > I guess, it's in arch-specific code. e.g. for x86-64,
    >
    > down:
    >
    > kernel/cpu.c :: _cpu_down -> take_cpu_down() -> __cpu_disable() [
    > arch/x86/kernel/smpboot_64.c ] -> cpu_clear(cpu, cpu_online_map)
    >
    > up:
    >
    > kernel/cpu.c :: _cpu_up() -> __cpu_up [ arch/x86/kernel/smpboot_64.c ]
    > -> do_boot_cpu() -> start_secondary() [ runs on a to-be-online cpu ]
    > -> cpu_set(smp_processor_id(), cpu_online_map)

    Thanks Dmitry! Your tip helped me to figure out what the real solution
    should be.

    Regards,
    -Greg


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