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    SubjectRe: [PATCH v2] oprofile, x86: Move memory allocation for ppro out of per cpu
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    On Mon, 2011-08-01 at 09:07 +0200, Robert Richter wrote:
    > Can you please describe the root problem more precisely. Why can't you
    > run it on -rt? What is broken?

    Because the allocators don't work from atomic context anymore. Now -rt
    doesn't have a lot of real atomic contexts left so its usually not much
    of a problem, but CPU_STARTING and actual IPIs are of course still
    atomic.





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