diff --git a/include/linux/reboot.h b/include/linux/reboot.h
index c6eba21..37d56c3 100644
--- a/include/linux/reboot.h
+++ b/include/linux/reboot.h
@@ -10,6 +10,11 @@
 #define SYS_HALT	0x0002	/* Notify of system halt */
 #define SYS_POWER_OFF	0x0003	/* Notify of system power off */
 
+enum reboot_mode {
+	REBOOT_COLD = 0,
+	REBOOT_WARM,
+};
+
 extern int register_reboot_notifier(struct notifier_block *);
 extern int unregister_reboot_notifier(struct notifier_block *);