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