diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c
index 508dfb023628..3c5ad1660bbc 100644
--- a/arch/sh/kernel/smp.c
+++ b/arch/sh/kernel/smp.c
@@ -18,6 +18,7 @@
 #include <linux/spinlock.h>
 #include <linux/mm.h>
 #include <linux/module.h>
+#include <linux/cpu.h>
 #include <linux/interrupt.h>
 #include <asm/atomic.h>
 #include <asm/processor.h>