| Atish Patra | ae3c107 | 2020-11-18 16:38:26 -0800 | [diff] [blame] | 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 | |
| 9 | int __node_distance(int from, int to); |
| 10 | #define node_distance(a, b) __node_distance(a, b) |
| 11 | |
| 12 | extern nodemask_t numa_nodes_parsed __initdata; |
| 13 | |
| 14 | extern bool numa_off; |
| 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 | if (node == NUMA_NO_NODE) |
| 27 | return cpu_all_mask; |
| 28 | |
| 29 | return node_to_cpumask_map[node]; |
| 30 | } |
| 31 | #endif |
| 32 | |
| 33 | void __init arch_numa_init(void); |
| 34 | int __init numa_add_memblk(int nodeid, u64 start, u64 end); |
| 35 | void __init numa_set_distance(int from, int to, int distance); |
| 36 | void __init numa_free_distance(void); |
| 37 | void __init early_map_cpu_to_node(unsigned int cpu, int nid); |
| 38 | void numa_store_cpu_info(unsigned int cpu); |
| 39 | void numa_add_cpu(unsigned int cpu); |
| 40 | void numa_remove_cpu(unsigned int cpu); |
| 41 | |
| 42 | #else /* CONFIG_NUMA */ |
| 43 | |
| 44 | static inline void numa_store_cpu_info(unsigned int cpu) { } |
| 45 | static inline void numa_add_cpu(unsigned int cpu) { } |
| 46 | static inline void numa_remove_cpu(unsigned int cpu) { } |
| 47 | static inline void arch_numa_init(void) { } |
| 48 | static inline void early_map_cpu_to_node(unsigned int cpu, int nid) { } |
| 49 | |
| 50 | #endif /* CONFIG_NUMA */ |
| 51 | |
| 52 | #endif /* __ASM_GENERIC_NUMA_H */ |