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    SubjectRe: [RFC][PATCH 0/5] Introduce checks for preemptable code for this_cpu_read/write()
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    On Tue, 2011-09-20 at 10:03 -0500, Christoph Lameter wrote:
    >
    > Well yes the misunderstanding of per cpu operations was one reason why I
    > proposed the discussion on the subject of esoteric kernel synchronization.
    > I do not think that it was accepted.

    I don't think anybody here misunderstands it, we're just all very angry
    that its causing so much problems.

    __this_cpu doesn't have preempt debug checks, and there's a lot of
    this_cpu usage that really should have been __this_cpu.

    The very fact that a quick scan still reveals actual bugs should be a
    warning sign that this crap doesn't have enough sanity checks.




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