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    SubjectRe: [PATCH v2] sched/core: Don't mix isolcpus and housekeeping CPUs
    On Thu, Oct 25, 2018 at 11:53:17PM +0530, Srikar Dronamraju wrote:
    > >
    > > You can create multiple partitions with cpusets but still have an
    > > unbound task in the root cgroup. That would suffer the exact same
    > > problems.
    > >
    >
    > I probably don't understand this. Even if the child cgroups has
    > cpu_exclusive or sched_load_balance reset, the tasks in root cgroup has
    > access to all cpus in system. Right?

    The crucial word being 'access'. The root group will not impose a limit
    on the affinity of tasks. So you can indeed have affinities that span
    load balancing domains.

    And yes, that leads to 'interesting' but specified behaviour.

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