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    SubjectRe: [PATCH v9 1/3] smpboot: allow excluding cpus from the smpboot threads
    On 04/29/2015 06:26 PM, Andrew Morton wrote:
    > On Fri, 17 Apr 2015 14:37:16 -0400 Chris Metcalf <cmetcalf@ezchip.com> wrote:
    >
    >> This change allows some cores to be excluded from running the
    >> smp_hotplug_thread tasks. The following commit to update
    >> kernel/watchdog.c to use this functionality is the motivating
    >> example, and more information on the motivation is provided there.
    >>
    >> A new smp_hotplug_thread field is introduced, "cpumask", which
    >> is cpumask field managed by the smpboot subsystem that indicates whether
    >> or not the given smp_hotplug_thread should run on that core; the
    >> cpumask is checked when deciding whether to unpark the thread.
    >>
    >> To limit the cpumask to less than cpu_possible, you must call
    >> smpboot_update_cpumask_percpu_thread() after registering.
    > Has Thomas commented on any version of this? t'would be nice.

    He offered some specific feedback here:

    https://lkml.org/lkml/2015/4/8/684

    that I reflected in the subsequent iteration of the patch series.

    Thomas, any additional feedback would be appreciated.

    --
    Chris Metcalf, EZChip Semiconductor
    http://www.ezchip.com



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