v4.19.13 snapshot.
diff --git a/lib/locking-selftest-rsem.h b/lib/locking-selftest-rsem.h
new file mode 100644
index 0000000..4544858
--- /dev/null
+++ b/lib/locking-selftest-rsem.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef LOCK
+#define LOCK		RSL
+
+#undef UNLOCK
+#define UNLOCK		RSU
+
+#undef RLOCK
+#define RLOCK		RSL
+
+#undef WLOCK
+#define WLOCK		WSL
+
+#undef INIT
+#define INIT		RWSI