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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/include/linux/numa.h
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@@ -1,7 +1,7 @@
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 /* SPDX-License-Identifier: GPL-2.0 */
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 #ifndef _LINUX_NUMA_H
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 #define _LINUX_NUMA_H
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-
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+#include <linux/types.h>
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 #ifdef CONFIG_NODES_SHIFT
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 #define NODES_SHIFT     CONFIG_NODES_SHIFT
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@@ -13,4 +13,49 @@
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 #define	NUMA_NO_NODE	(-1)
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+/* optionally keep NUMA memory info available post init */
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+#ifdef CONFIG_NUMA_KEEP_MEMINFO
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+#define __initdata_or_meminfo
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+#else
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+#define __initdata_or_meminfo __initdata
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+#endif
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+
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+#ifdef CONFIG_NUMA
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+#include <linux/printk.h>
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+#include <asm/sparsemem.h>
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+
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+/* Generic implementation available */
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+int numa_map_to_online_node(int node);
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+
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+#ifndef memory_add_physaddr_to_nid
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+static inline int memory_add_physaddr_to_nid(u64 start)
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+{
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+	pr_info_once("Unknown online node for memory at 0x%llx, assuming node 0\n",
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+			start);
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+	return 0;
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+}
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+#endif
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+#ifndef phys_to_target_node
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+static inline int phys_to_target_node(u64 start)
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+{
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+	pr_info_once("Unknown target node for memory at 0x%llx, assuming node 0\n",
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+			start);
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+	return 0;
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+}
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+#endif
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+#else /* !CONFIG_NUMA */
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+static inline int numa_map_to_online_node(int node)
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+{
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+	return NUMA_NO_NODE;
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+}
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+static inline int memory_add_physaddr_to_nid(u64 start)
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+{
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+	return 0;
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+}
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+static inline int phys_to_target_node(u64 start)
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+{
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+	return 0;
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+}
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+#endif
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+
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 #endif /* _LINUX_NUMA_H */