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    SubjectRe: [PATCH 0/4] arch/CPU hotplug: Add missing CPU Hotplug bits to fix nasty issues
    On Thu, 2012-03-22 at 13:13 +0100, Peter Zijlstra wrote:
    > Furthermore, I was pondering the scenario where a 3rd cpu IPIs the newly
    > booting cpu, I suspect we need a smp_wmb() after setting cpu_active and
    > a rmb in select_fallback_rq() before reading active.

    Hmm, not IPI, that would be covered by the disabling of interrupts on
    bringup, but somehow manage to wake a thread that's strictly affine that
    the fresh cpu, like queue_work_on() or so.

     \ /
      Last update: 2012-03-22 13:37    [W:0.018 / U:0.552 seconds]
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