diff --git a/kernel/power/power.h b/kernel/power/power.h
index 3763343..3afa5db 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -171,3 +171,7 @@
 extern int swsusp_write(void);
 extern void swsusp_close(void);
 extern int suspend_enter(suspend_state_t state);
+
+struct timeval;
+extern void swsusp_show_speed(struct timeval *, struct timeval *,
+				unsigned int, char *);