[PATCH v4 2/3] xen, cpu_hotplug: call device_offline instead of cpu_down

[Boris Ostrovsky]

On 10/21/2015 07:53 AM, Stefano Stabellini wrote:
> When offlining a cpu, instead of cpu_down, call device_offline, which
> also takes care of updating the cpu.dev.offline field. This keeps the
> sysfs file /sys/devices/system/cpu/cpuN/online, up to date.  Also move
> the call to disable_hotplug_cpu, because it makes more sense to have it
> there.
>
> We don't call device_online at cpu-hotplug time, because that would
> immediately take the cpu online, while we want to retain the current
> behaviour: the user needs to explicitly enable the cpu after it has
> been hotplugged.
>
> Signed-off-by: Stefano Stabellini <stefano.stabellini at eu.citrix.com>
> CC: konrad.wilk at oracle.com
> CC: boris.ostrovsky at oracle.com
> CC: david.vrabel at citrix.com

Reviewed-by: Boris Ostrovsky <boris.ostrovsky at oracle.com>