diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c
index 5910d3fac561d5f33d26df53f63fad2ac0c8d2fe..e4f61d1c6248d8116810e122651f3fb109b5b78e 100644
--- a/arch/i386/kernel/smpboot.c
+++ b/arch/i386/kernel/smpboot.c
@@ -308,7 +308,7 @@ cpumask_t cpu_coregroup_map(int cpu)
 /* representing cpus for which sibling maps can be computed */
 static cpumask_t cpu_sibling_setup_map;
 
-void set_cpu_sibling_map(int cpu)
+void __cpuinit set_cpu_sibling_map(int cpu)
 {
 	int i;
 	struct cpuinfo_x86 *c = cpu_data;