diff --git a/kernel/up.c b/kernel/up.c
index b1cf036..630d72b 100644
--- a/kernel/up.c
+++ b/kernel/up.c
@@ -22,6 +22,17 @@
 }
 EXPORT_SYMBOL(smp_call_function_single);
 
+int on_each_cpu(smp_call_func_t func, void *info, int wait)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+	func(info);
+	local_irq_restore(flags);
+	return 0;
+}
+EXPORT_SYMBOL(on_each_cpu);
+
 /*
  * Note we still need to test the mask even for UP
  * because we actually can get an empty mask from