v4.19.13 snapshot.
diff --git a/arch/sh/include/asm/mmzone.h b/arch/sh/include/asm/mmzone.h
new file mode 100644
index 0000000..cbaee1d
--- /dev/null
+++ b/arch/sh/include/asm/mmzone.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_SH_MMZONE_H
+#define __ASM_SH_MMZONE_H
+
+#ifdef __KERNEL__
+
+#ifdef CONFIG_NEED_MULTIPLE_NODES
+#include <linux/numa.h>
+
+extern struct pglist_data *node_data[];
+#define NODE_DATA(nid) (node_data[nid])
+
+static inline int pfn_to_nid(unsigned long pfn)
+{
+ int nid;
+
+ for (nid = 0; nid < MAX_NUMNODES; nid++)
+ if (pfn >= node_start_pfn(nid) && pfn <= node_end_pfn(nid))
+ break;
+
+ return nid;
+}
+
+static inline struct pglist_data *pfn_to_pgdat(unsigned long pfn)
+{
+ return NODE_DATA(pfn_to_nid(pfn));
+}
+
+/* arch/sh/mm/numa.c */
+void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end);
+#else
+static inline void
+setup_bootmem_node(int nid, unsigned long start, unsigned long end)
+{
+}
+#endif /* CONFIG_NEED_MULTIPLE_NODES */
+
+/* Platform specific mem init */
+void __init plat_mem_setup(void);
+
+/* arch/sh/kernel/setup.c */
+void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
+ unsigned long end_pfn);
+/* arch/sh/mm/init.c */
+void __init allocate_pgdat(unsigned int nid);
+
+#endif /* __KERNEL__ */
+#endif /* __ASM_SH_MMZONE_H */