From a11b2df52a84c32406f8509df8813d95708afbbb Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@linux-foundation.org>
Date: Fri, 28 Sep 2012 10:18:48 +1000
Subject: [PATCH] cpu_hotplug-unmap-cpu2node-when-the-cpu-is-hotremoved-fix

make acpi_unmap_lsapic __ref

Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 arch/x86/kernel/acpi/boot.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index c2a49b4bb644..99e6474064ca 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -689,7 +689,7 @@ int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
 }
 EXPORT_SYMBOL(acpi_map_lsapic);
 
-int acpi_unmap_lsapic(int cpu)
+int __ref acpi_unmap_lsapic(int cpu)
 {
 #ifdef CONFIG_ACPI_NUMA
 	set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE);
-- 
2.39.5