Index: kernel/generic/include/synch/rcu.h
===================================================================
--- kernel/generic/include/synch/rcu.h	(revision ef1603b3aaf4bc28c37fa3c7f408b23f535f8e0a)
+++ kernel/generic/include/synch/rcu.h	(revision ef1603b3aaf4bc28c37fa3c7f408b23f535f8e0a)
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2012 Adam Hraska
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup sync
+ * @{
+ */
+/** @file
+ */
+
+#ifndef KERN_RCU_H_
+#define KERN_RCU_H_
+
+/* Fwd decl. */
+struct rcu_head;
+
+/** RCU callback type. */
+typedef void (*rcu_cb_func_t)(struct rcu_head *head);
+
+/** */
+struct rcu_head {
+	struct rcu_head *next;
+	rcu_cb_func_t func;
+};
+
+
+
+void rcu_read_lock(void);
+void rcu_read_unlock(void);
+void rcu_synchronize(void);
+void rcu_call(struct rcu_head *head, rcu_cb_func_t func);
+
+
+#endif
+
+/** @}
+ */
+