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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef __ASM_GENERIC_NUMA_H3#define __ASM_GENERIC_NUMA_H4 5#ifdef CONFIG_NUMA6 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_MAPS21const struct cpumask *cpumask_of_node(int node);22#else23/* 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#endif32 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_EMU53void debug_cpumask_set_cpu(unsigned int cpu, int node, bool enable);54#endif55 56#endif /* __ASM_GENERIC_NUMA_H */57