Commit 32145c46 authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Greg Kroah-Hartman

cpu-hotplug: export cpu_hotplug_enable/cpu_hotplug_disable

Hyper-V module needs to disable cpu hotplug (offlining) as there is no
support from hypervisor side to reassign already opened event channels
to a different CPU. Currently it is been done by altering
smp_ops.cpu_disable but it is hackish.
Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 89af7ba5
...@@ -194,6 +194,7 @@ void cpu_hotplug_disable(void) ...@@ -194,6 +194,7 @@ void cpu_hotplug_disable(void)
cpu_hotplug_disabled++; cpu_hotplug_disabled++;
cpu_maps_update_done(); cpu_maps_update_done();
} }
EXPORT_SYMBOL_GPL(cpu_hotplug_disable);
void cpu_hotplug_enable(void) void cpu_hotplug_enable(void)
{ {
...@@ -201,7 +202,7 @@ void cpu_hotplug_enable(void) ...@@ -201,7 +202,7 @@ void cpu_hotplug_enable(void)
WARN_ON(--cpu_hotplug_disabled < 0); WARN_ON(--cpu_hotplug_disabled < 0);
cpu_maps_update_done(); cpu_maps_update_done();
} }
EXPORT_SYMBOL_GPL(cpu_hotplug_enable);
#endif /* CONFIG_HOTPLUG_CPU */ #endif /* CONFIG_HOTPLUG_CPU */
/* Need to know about CPUs going up/down? */ /* Need to know about CPUs going up/down? */
......
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