#include <asm/atomic.h>
#include <linux/list.h>
#include <linux/random.h>
-#endif
+#include <linux/version.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+
+# ifdef HAVE_RCU
+# include <linux/rcupdate.h> /* for rcu_head{} */
+# else
+struct rcu_head { };
+# endif
+
+#endif /* ifdef __KERNEL__ */
#endif