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    SubjectRe: [PATCH v2] core, x86: Add user return notifiers
    On 09/22/2009 07:55 PM, Peter Zijlstra wrote:
    >> If you're using lockdep, surely that's not your biggest worry?
    > No, but that's all under #ifdef and fully disappears when not enabled.
    > Generic return-tu-user notifiers don't sound like they will though.

    They will if not selected. If selected and not armed, they will have
    zero runtime impact since they piggyback on existing branches
    (_TIF_DO_NOTIFY_MASK and near relatives). If selected and armed they'll
    cause __switch_to_xtra() on every context switch and do_notity_resume()
    on syscall exit until disarmed, but then you've asked for it.

    error compiling committee.c: too many arguments to function

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      Last update: 2009-09-22 19:09    [W:0.038 / U:33.692 seconds]
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