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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2015-08-05 09:52:47 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-08-05 20:46:44 +0200 |
| commit | 32145c4677d2c46b9d877a33ae82c6fcacd002f9 (patch) | |
| tree | 39f0505dc1d6976064e1b7bb0292509a2c1c7db2 /kernel | |
| parent | cpu-hotplug: convert cpu_hotplug_disabled to a counter (diff) | |
| download | linux-32145c4677d2c46b9d877a33ae82c6fcacd002f9.tar.xz linux-32145c4677d2c46b9d877a33ae82c6fcacd002f9.zip | |
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: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cpu.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index 0fca2ba96138..718ea76b78ba 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -194,6 +194,7 @@ void cpu_hotplug_disable(void) cpu_hotplug_disabled++; cpu_maps_update_done(); } +EXPORT_SYMBOL_GPL(cpu_hotplug_disable); void cpu_hotplug_enable(void) { @@ -201,7 +202,7 @@ void cpu_hotplug_enable(void) WARN_ON(--cpu_hotplug_disabled < 0); cpu_maps_update_done(); } - +EXPORT_SYMBOL_GPL(cpu_hotplug_enable); #endif /* CONFIG_HOTPLUG_CPU */ /* Need to know about CPUs going up/down? */ |