1 #ifndef __ASM_NUMA_H 2 #define __ASM_NUMA_H 3 4 #include <asm/topology.h> 5 6 #ifdef CONFIG_NUMA 7 8 /* currently, arm64 implements flat NUMA topology */ 9 #define parent_node(node) (node) 10 11 int __node_distance(int from, int to); 12 #define node_distance(a, b) __node_distance(a, b) 13 14 extern nodemask_t numa_nodes_parsed __initdata; 15 16 /* Mappings between node number and cpus on that node. */ 17 extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES]; 18 void numa_clear_node(unsigned int cpu); 19 20 #ifdef CONFIG_DEBUG_PER_CPU_MAPS 21 const struct cpumask *cpumask_of_node(int node); 22 #else 23 /* Returns a pointer to the cpumask of CPUs on Node 'node'. */ 24 static inline const struct cpumask *cpumask_of_node(int node) 25 { 26 return node_to_cpumask_map[node]; 27 } 28 #endif 29 30 void __init arm64_numa_init(void); 31 int __init numa_add_memblk(int nodeid, u64 start, u64 end); 32 void __init numa_set_distance(int from, int to, int distance); 33 void __init numa_free_distance(void); 34 void __init early_map_cpu_to_node(unsigned int cpu, int nid); 35 void numa_store_cpu_info(unsigned int cpu); 36 37 #else /* CONFIG_NUMA */ 38 39 static inline void numa_store_cpu_info(unsigned int cpu) { } 40 static inline void arm64_numa_init(void) { } 41 static inline void early_map_cpu_to_node(unsigned int cpu, int nid) { } 42 43 #endif /* CONFIG_NUMA */ 44 45 #endif /* __ASM_NUMA_H */ 46