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    SubjectRe: [BUG] "sched: Remove rq->lock from the first half of ttwu()" locks up on ARM
    On Fri, 27 May 2011, Ingo Molnar wrote:

    > I'd suggest doing this once modern ARM chips get so widespread that
    > you can realistically induce a ~700 usecs irqs-off delays on old,
    > virtual-cache ARM chips. Old chips would likely use old kernels
    > anyway, right?

    Those "old" ARM chips are still largely produced and fitted in new
    designs, and using latest kernels. They are unlikely to fade away
    before a couple years.


    Nicolas


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