1 files changed, 13 insertions, 10 deletions

diff --git a/arch/x86/kernel/topology.c b/arch/x86/kernel/topology.c
index 7e16d675eb85..78cbb655aa79 100644
--- a/arch/x86/kernel/topology.c
+++ b/arch/x86/kernel/topology.c
@@ -31,9 +31,10 @@
 #include <linux/mmzone.h>
 #include <asm/cpu.h>
 
-static struct i386_cpu cpu_devices[NR_CPUS];
+static DEFINE_PER_CPU(struct x86_cpu, cpu_devices);
 
-int __cpuinit arch_register_cpu(int num)
+#ifdef CONFIG_HOTPLUG_CPU
+int arch_register_cpu(int num)
 {
         /*
          * CPU0 cannot be offlined due to several
@@ -44,21 +45,23 @@ int __cpuinit arch_register_cpu(int num)
          * Also certain PCI quirks require not to enable hotplug control
          * for all CPU's.
          */
-#ifdef CONFIG_HOTPLUG_CPU
         if (num)
-                cpu_devices[num].cpu.hotpluggable = 1;
-#endif
-
-        return register_cpu(&cpu_devices[num].cpu, num);
+                per_cpu(cpu_devices, num).cpu.hotpluggable = 1;
+        return register_cpu(&per_cpu(cpu_devices, num).cpu, num);
 }
+EXPORT_SYMBOL(arch_register_cpu);
 
-#ifdef CONFIG_HOTPLUG_CPU
 void arch_unregister_cpu(int num)
 {
-        return unregister_cpu(&cpu_devices[num].cpu);
+        return unregister_cpu(&per_cpu(cpu_devices, num).cpu);
 }
-EXPORT_SYMBOL(arch_register_cpu);
 EXPORT_SYMBOL(arch_unregister_cpu);
+#else
+int arch_register_cpu(int num)
+{
+        return register_cpu(&per_cpu(cpu_devices, num).cpu, num);
+}
+EXPORT_SYMBOL(arch_register_cpu);
 #endif /*CONFIG_HOTPLUG_CPU*/
 
 static int __init topology_init(void)