v4.19.13 snapshot.
diff --git a/include/linux/numa.h b/include/linux/numa.h
new file mode 100644
index 0000000..110b0e5
--- /dev/null
+++ b/include/linux/numa.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_NUMA_H
+#define _LINUX_NUMA_H
+
+
+#ifdef CONFIG_NODES_SHIFT
+#define NODES_SHIFT     CONFIG_NODES_SHIFT
+#else
+#define NODES_SHIFT     0
+#endif
+
+#define MAX_NUMNODES    (1 << NODES_SHIFT)
+
+#define	NUMA_NO_NODE	(-1)
+
+#endif /* _LINUX_NUMA_H */