1 files changed, 83 insertions, 0 deletions
diff --git a/arch/x86/include/asm/numa.h b/arch/x86/include/asm/numa.h
new file mode 100644
index 000000000..bbfde3d26
--- /dev/null
+++ b/arch/x86/include/asm/numa.h
@@ -0,0 +1,83 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_X86_NUMA_H
+#define _ASM_X86_NUMA_H
+
+#include <linux/nodemask.h>
+
+#include <asm/topology.h>
+#include <asm/apicdef.h>
+
+#ifdef CONFIG_NUMA
+
+#define NR_NODE_MEMBLKS		(MAX_NUMNODES*2)
+
+/*
+ * Too small node sizes may confuse the VM badly. Usually they
+ * result from BIOS bugs. So dont recognize nodes as standalone
+ * NUMA entities that have less than this amount of RAM listed:
+ */
+#define NODE_MIN_SIZE (4*1024*1024)
+
+extern int numa_off;
+
+/*
+ * __apicid_to_node[] stores the raw mapping between physical apicid and
+ * node and is used to initialize cpu_to_node mapping.
+ *
+ * The mapping may be overridden by apic->numa_cpu_node() on 32bit and thus
+ * should be accessed by the accessors - set_apicid_to_node() and
+ * numa_cpu_node().
+ */
+extern s16 __apicid_to_node[MAX_LOCAL_APIC];
+extern nodemask_t numa_nodes_parsed __initdata;
+
+extern int __init numa_add_memblk(int nodeid, u64 start, u64 end);
+extern void __init numa_set_distance(int from, int to, int distance);
+
+static inline void set_apicid_to_node(int apicid, s16 node)
+{
+	__apicid_to_node[apicid] = node;
+}
+
+extern int numa_cpu_node(int cpu);
+
+#else	/* CONFIG_NUMA */
+static inline void set_apicid_to_node(int apicid, s16 node)
+{
+}
+
+static inline int numa_cpu_node(int cpu)
+{
+	return NUMA_NO_NODE;
+}
+#endif	/* CONFIG_NUMA */
+
+#ifdef CONFIG_X86_32
+# include <asm/numa_32.h>
+#endif
+
+#ifdef CONFIG_NUMA
+extern void numa_set_node(int cpu, int node);
+extern void numa_clear_node(int cpu);
+extern void __init init_cpu_to_node(void);
+extern void numa_add_cpu(int cpu);
+extern void numa_remove_cpu(int cpu);
+#else	/* CONFIG_NUMA */
+static inline void numa_set_node(int cpu, int node)	{ }
+static inline void numa_clear_node(int cpu)		{ }
+static inline void init_cpu_to_node(void)		{ }
+static inline void numa_add_cpu(int cpu)		{ }
+static inline void numa_remove_cpu(int cpu)		{ }
+#endif	/* CONFIG_NUMA */
+
+#ifdef CONFIG_DEBUG_PER_CPU_MAPS
+void debug_cpumask_set_cpu(int cpu, int node, bool enable);
+#endif
+
+#ifdef CONFIG_NUMA_EMU
+#define FAKE_NODE_MIN_SIZE	((u64)32 << 20)
+#define FAKE_NODE_MIN_HASH_MASK	(~(FAKE_NODE_MIN_SIZE - 1UL))
+void numa_emu_cmdline(char *);
+#endif /* CONFIG_NUMA_EMU */
+
+#endif	/* _ASM_X86_NUMA_H */