1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __ASM_GENERIC_NUMA_H
 3#define __ASM_GENERIC_NUMA_H
 4
 5#ifdef CONFIG_NUMA
 6
 7#define NR_NODE_MEMBLKS		(MAX_NUMNODES * 2)
 8
 9int __node_distance(int from, int to);
10#define node_distance(a, b) __node_distance(a, b)
11
12extern nodemask_t numa_nodes_parsed __initdata;
13
14extern bool numa_off;
15
16/* Mappings between node number and cpus on that node. */
17extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
18void numa_clear_node(unsigned int cpu);
19
20#ifdef CONFIG_DEBUG_PER_CPU_MAPS
21const struct cpumask *cpumask_of_node(int node);
22#else
23/* Returns a pointer to the cpumask of CPUs on Node 'node'. */
24static inline const struct cpumask *cpumask_of_node(int node)
25{
26	if (node == NUMA_NO_NODE)
27		return cpu_all_mask;
28
29	return node_to_cpumask_map[node];
30}
31#endif
32
33void __init arch_numa_init(void);
34int __init numa_add_memblk(int nodeid, u64 start, u64 end);
35void __init early_map_cpu_to_node(unsigned int cpu, int nid);
36int early_cpu_to_node(int cpu);
37void numa_store_cpu_info(unsigned int cpu);
38void numa_add_cpu(unsigned int cpu);
39void numa_remove_cpu(unsigned int cpu);
40
41#else	/* CONFIG_NUMA */
42
43static inline void numa_store_cpu_info(unsigned int cpu) { }
44static inline void numa_add_cpu(unsigned int cpu) { }
45static inline void numa_remove_cpu(unsigned int cpu) { }
46static inline void arch_numa_init(void) { }
47static inline void early_map_cpu_to_node(unsigned int cpu, int nid) { }
48static inline int early_cpu_to_node(int cpu) { return 0; }
49
50#endif	/* CONFIG_NUMA */
51
52#ifdef CONFIG_NUMA_EMU
53void debug_cpumask_set_cpu(unsigned int cpu, int node, bool enable);
54#endif
55
56#endif	/* __ASM_GENERIC_NUMA_H */