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    Subject[PATCH 4.4 331/342] x86/irq: Remove offline cpus from vector cleanup
    Date
    4.4-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Thomas Gleixner <tglx@linutronix.de>

    commit 847667ef10356b824a11c853fc8a8b1b437b6a8d upstream.

    No point of keeping offline cpus in the cleanup mask.

    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Tested-by: Borislav Petkov <bp@alien8.de>
    Tested-by: Joe Lawrence <joe.lawrence@stratus.com>
    Cc: Jiang Liu <jiang.liu@linux.intel.com>
    Cc: Jeremiah Mahler <jmmahler@gmail.com>
    Cc: andy.shevchenko@gmail.com
    Cc: Guenter Roeck <linux@roeck-us.net>
    Link: http://lkml.kernel.org/r/20151231160106.808642683@linutronix.de
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    arch/x86/kernel/apic/vector.c | 8 ++++++--
    1 file changed, 6 insertions(+), 2 deletions(-)

    --- a/arch/x86/kernel/apic/vector.c
    +++ b/arch/x86/kernel/apic/vector.c
    @@ -200,8 +200,12 @@ next_cpu:
    return -ENOSPC;

    update:
    - /* Cleanup required ? */
    - d->move_in_progress = cpumask_intersects(d->old_domain, cpu_online_mask);
    + /*
    + * Exclude offline cpus from the cleanup mask and set the
    + * move_in_progress flag when the result is not empty.
    + */
    + cpumask_and(d->old_domain, d->old_domain, cpu_online_mask);
    + d->move_in_progress = !cpumask_empty(d->old_domain);
    d->cfg.vector = vector;
    cpumask_copy(d->domain, vector_cpumask);
    success:
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