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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_GENERIC_NUMA_H
#define __ASM_GENERIC_NUMA_H
#ifdef CONFIG_NUMA
#define NR_NODE_MEMBLKS (MAX_NUMNODES * 2)
int __node_distance(int from, int to);
#define node_distance(a, b) __node_distance(a, b)
extern nodemask_t numa_nodes_parsed __initdata;
extern bool numa_off;
/* Mappings between node number and cpus on that node. */
extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
void numa_clear_node(unsigned int cpu);
#ifdef CONFIG_DEBUG_PER_CPU_MAPS
const struct cpumask *cpumask_of_node(int node);
#else
/* Returns a pointer to the cpumask of CPUs on Node 'node'. */
static inline const struct cpumask *cpumask_of_node(int node)
{
if (node == NUMA_NO_NODE)
return cpu_all_mask;
return node_to_cpumask_map[node];
}
#endif
void __init arch_numa_init(void);
int __init numa_add_memblk(int nodeid, u64 start, u64 end);
void __init numa_set_distance(int from, int to, int distance);
void __init numa_free_distance(void);
void __init early_map_cpu_to_node(unsigned int cpu, int nid);
void numa_store_cpu_info(unsigned int cpu);
void numa_add_cpu(unsigned int cpu);
void numa_remove_cpu(unsigned int cpu);
#else /* CONFIG_NUMA */
static inline void numa_store_cpu_info(unsigned int cpu) { }
static inline void numa_add_cpu(unsigned int cpu) { }
static inline void numa_remove_cpu(unsigned int cpu) { }
static inline void arch_numa_init(void) { }
static inline void early_map_cpu_to_node(unsigned int cpu, int nid) { }
#endif /* CONFIG_NUMA */
#endif /* __ASM_GENERIC_NUMA_H */