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 /* currently, arm64 implements flat NUMA topology */ 11 #define parent_node(node) (node) 12 13 int __node_distance(int from, int to); 14 #define node_distance(a, b) __node_distance(a, b) 15 16 extern nodemask_t numa_nodes_parsed __initdata; 17 18 extern bool numa_off; 19 20 /* Mappings between node number and cpus on that node. */ 21 extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES]; 22 void numa_clear_node(unsigned int cpu); 23 24 #ifdef CONFIG_DEBUG_PER_CPU_MAPS 25 const struct cpumask *cpumask_of_node(int node); 26 #else 27 /* Returns a pointer to the cpumask of CPUs on Node 'node'. */ 28 static inline const struct cpumask *cpumask_of_node(int node) 29 { 30 return node_to_cpumask_map[node]; 31 } 32 #endif 33 34 void __init arm64_numa_init(void); 35 int __init numa_add_memblk(int nodeid, u64 start, u64 end); 36 void __init numa_set_distance(int from, int to, int distance); 37 void __init numa_free_distance(void); 38 void __init early_map_cpu_to_node(unsigned int cpu, int nid); 39 void numa_store_cpu_info(unsigned int cpu); 40 41 #else /* CONFIG_NUMA */ 42 43 static inline void numa_store_cpu_info(unsigned int cpu) { } 44 static inline void arm64_numa_init(void) { } 45 static inline void early_map_cpu_to_node(unsigned int cpu, int nid) { } 46 47 #endif /* CONFIG_NUMA */ 48 49 #endif /* __ASM_NUMA_H */ 50