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    SubjectRe: RT patch acceptance

    * Andi Kleen <> wrote:

    > But at least CONFIG_PREEMPT is still reasonably cheap, so it is not as
    > intrusive as some of the stuff proposed.

    actually, PREEMPT_RT is not nearly as intrusive (on the source level) as
    PREEMPT. It's not even in the same ballpark. (because it mostly rides on
    the top of the intrusion caused by SMP and PREEMPT support.)

    it's intrusive in terms of performance impact.

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