diff --git a/kernel/up.c b/kernel/up.c
index 4e199d4..1760bf3 100644
--- a/kernel/up.c
+++ b/kernel/up.c
@@ -22,7 +22,7 @@
 }
 EXPORT_SYMBOL(smp_call_function_single);
 
-int __smp_call_function_single(int cpu, struct call_single_data *csd)
+int smp_call_function_single_async(int cpu, struct call_single_data *csd)
 {
 	unsigned long flags;
 
@@ -31,7 +31,7 @@
 	local_irq_restore(flags);
 	return 0;
 }
-EXPORT_SYMBOL(__smp_call_function_single);
+EXPORT_SYMBOL(smp_call_function_single_async);
 
 int on_each_cpu(smp_call_func_t func, void *info, int wait)
 {