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    SubjectRe: [PATCH] cpuset code prevents binding tasks to new cpus
    Nathan wrote:
    > - top_cpuset.cpus_allowed = cpu_online_map;
    > + top_cpuset.cpus_allowed = cpu_possible_map;


    While this seems sensible on systems not using cpusets (but still using
    kernels configured for cpusets), it is surprising on systems using
    cpusets, on which one expects the cpuset that a task is in to reflect
    the cpus that a task is allowed to use.

    A long time ago, this code actually had cpu_possible_map here, not
    cpu_online_map. That was changed, in the patch:
    [Patch] cpusets interoperate with hotplug online maps

    Lets discuss this further. See further my previous reply to Anton.

    I won't rest till it's the best ...
    Programmer, Linux Scalability
    Paul Jackson <> 1.925.600.0401
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