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    Subject[PATCH 0/2] onlining cpus can break lockdep
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    Hi,

    While testing with hotplugging cpus today, I've came across a stack
    trace generated by lockdep. The reason for that is that
    do_boot_cpu() in smpboot_64.c ends up initializing a struct work_struct
    variable in the stack.

    These patches fix this by making it static. a per-cpu variable is choosen,
    since, to the best of my knowledge, nothing prevents two cpus going up
    at the same time, and so a single static c_idle won't do.

    I separated it in two patches to better isolate the change. The first patch
    just paves the way, by turning access to c_idle into pointer dereferences.
    The second one does the real work.

    Thanks




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