diff --git a/include/linux/cdev.h b/include/linux/cdev.h
new file mode 100644
index 0000000..8da37e2
--- /dev/null
+++ b/include/linux/cdev.h
@@ -0,0 +1,27 @@
+#ifndef _LINUX_CDEV_H
+#define _LINUX_CDEV_H
+#ifdef __KERNEL__
+
+struct cdev {
+	struct kobject kobj;
+	struct module *owner;
+	struct file_operations *ops;
+	struct list_head list;
+	dev_t dev;
+	unsigned int count;
+};
+
+void cdev_init(struct cdev *, struct file_operations *);
+
+struct cdev *cdev_alloc(void);
+
+void cdev_put(struct cdev *p);
+
+int cdev_add(struct cdev *, dev_t, unsigned);
+
+void cdev_del(struct cdev *);
+
+void cd_forget(struct inode *);
+
+#endif
+#endif