v4.19.13 snapshot.
diff --git a/lib/locking-selftest-softirq.h b/lib/locking-selftest-softirq.h
new file mode 100644
index 0000000..6adde48
--- /dev/null
+++ b/lib/locking-selftest-softirq.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef IRQ_DISABLE
+#undef IRQ_ENABLE
+#undef IRQ_ENTER
+#undef IRQ_EXIT
+
+#define IRQ_DISABLE		SOFTIRQ_DISABLE
+#define IRQ_ENABLE		SOFTIRQ_ENABLE
+#define IRQ_ENTER		SOFTIRQ_ENTER
+#define IRQ_EXIT		SOFTIRQ_EXIT