numa.h (1544B)
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 numa_set_distance(int from, int to, int distance); 36void __init numa_free_distance(void); 37void __init early_map_cpu_to_node(unsigned int cpu, int nid); 38void numa_store_cpu_info(unsigned int cpu); 39void numa_add_cpu(unsigned int cpu); 40void numa_remove_cpu(unsigned int cpu); 41 42#else /* CONFIG_NUMA */ 43 44static inline void numa_store_cpu_info(unsigned int cpu) { } 45static inline void numa_add_cpu(unsigned int cpu) { } 46static inline void numa_remove_cpu(unsigned int cpu) { } 47static inline void arch_numa_init(void) { } 48static inline void early_map_cpu_to_node(unsigned int cpu, int nid) { } 49 50#endif /* CONFIG_NUMA */ 51 52#endif /* __ASM_GENERIC_NUMA_H */