diff --git a/arch/x86/kernel/smpboot_64.c b/arch/x86/kernel/smpboot_64.c
index 500670c93d81d278e0402289803f5881946226b5..aaf4e1291217ef120d98cb3d7d98e55dd0debb79 100644
--- a/arch/x86/kernel/smpboot_64.c
+++ b/arch/x86/kernel/smpboot_64.c
@@ -526,7 +526,7 @@ struct create_idle {
 	int cpu;
 };
 
-void do_fork_idle(struct work_struct *work)
+static void __cpuinit do_fork_idle(struct work_struct *work)
 {
 	struct create_idle *c_idle =
 		container_of(work, struct create_idle, work);