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Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ASM_NUMA_H
3#define __ASM_NUMA_H
4
5#include <asm/topology.h>
6
7#ifdef CONFIG_NUMA
8
9#define NR_NODE_MEMBLKS (MAX_NUMNODES * 2)
10
11int __node_distance(int from, int to);
12#define node_distance(a, b) __node_distance(a, b)
13
14extern nodemask_t numa_nodes_parsed __initdata;
15
16extern bool numa_off;
17
18/* Mappings between node number and cpus on that node. */
19extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
20void numa_clear_node(unsigned int cpu);
21
22#ifdef CONFIG_DEBUG_PER_CPU_MAPS
23const struct cpumask *cpumask_of_node(int node);
24#else
25/* Returns a pointer to the cpumask of CPUs on Node 'node'. */
26static inline const struct cpumask *cpumask_of_node(int node)
27{
28 if (node == NUMA_NO_NODE)
29 return cpu_all_mask;
30
31 return node_to_cpumask_map[node];
32}
33#endif
34
35void __init arm64_numa_init(void);
36int __init numa_add_memblk(int nodeid, u64 start, u64 end);
37void __init numa_set_distance(int from, int to, int distance);
38void __init numa_free_distance(void);
39void __init early_map_cpu_to_node(unsigned int cpu, int nid);
40void numa_store_cpu_info(unsigned int cpu);
41void numa_add_cpu(unsigned int cpu);
42void numa_remove_cpu(unsigned int cpu);
43
44#else /* CONFIG_NUMA */
45
46static inline void numa_store_cpu_info(unsigned int cpu) { }
47static inline void numa_add_cpu(unsigned int cpu) { }
48static inline void numa_remove_cpu(unsigned int cpu) { }
49static inline void arm64_numa_init(void) { }
50static inline void early_map_cpu_to_node(unsigned int cpu, int nid) { }
51
52#endif /* CONFIG_NUMA */
53
54#endif /* __ASM_NUMA_H */