diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c
index 00b0df97afb1..762289b9984e 100644
--- a/arch/parisc/kernel/processor.c
+++ b/arch/parisc/kernel/processor.c
@@ -26,6 +26,7 @@
 #include <asm/processor.h>
 #include <asm/page.h>
 #include <asm/pdc.h>
+#include <asm/smp.h>
 #include <asm/pdcpat.h>
 #include <asm/irq.h>		/* for struct irq_region */
 #include <asm/parisc-device.h>