diff --git a/kernel/cpu.c b/kernel/cpu.c
index 563f136094704fb8e6211636d72c3cc050da5f96..9d448ddb224745b32167d01d6a2a97d16fef60e6 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -380,6 +380,7 @@ int __cpuinit cpu_up(unsigned int cpu)
 	cpu_maps_update_done();
 	return err;
 }
+EXPORT_SYMBOL_GPL(cpu_up);
 
 #ifdef CONFIG_PM_SLEEP_SMP
 static cpumask_var_t frozen_cpus;