fix this on i386 allnoconfig:
 WARNING: vmlinux.o(.text+0x6f2e): Section mismatch: reference to .init.text:register_cpu (between 'arch_register_cpu' and 'text_poke')
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 
 static struct i386_cpu cpu_devices[NR_CPUS];
 
-int arch_register_cpu(int num)
+int __cpuinit arch_register_cpu(int num)
 {
        /*
         * CPU0 cannot be offlined due to several
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
-void arch_unregister_cpu(int num) {
+void arch_unregister_cpu(int num)
+{
        return unregister_cpu(&cpu_devices[num].cpu);
 }
 EXPORT_SYMBOL(arch_register_cpu);