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ae3c107cd8
ARM64 numa implementation is generic enough that RISC-V can reuse that implementation with very minor cosmetic changes. This will help both ARM64 and RISC-V in terms of maintanace and feature improvement Move the numa implementation code to common directory so that both ISAs can reuse this. This doesn't introduce any function changes for ARM64. Signed-off-by: Atish Patra <atish.patra@wdc.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_GENERIC_NUMA_H
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#define __ASM_GENERIC_NUMA_H
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#ifdef CONFIG_NUMA
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#define NR_NODE_MEMBLKS (MAX_NUMNODES * 2)
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int __node_distance(int from, int to);
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#define node_distance(a, b) __node_distance(a, b)
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extern nodemask_t numa_nodes_parsed __initdata;
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extern bool numa_off;
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/* Mappings between node number and cpus on that node. */
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extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
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void numa_clear_node(unsigned int cpu);
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#ifdef CONFIG_DEBUG_PER_CPU_MAPS
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const struct cpumask *cpumask_of_node(int node);
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#else
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/* Returns a pointer to the cpumask of CPUs on Node 'node'. */
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static inline const struct cpumask *cpumask_of_node(int node)
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{
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if (node == NUMA_NO_NODE)
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return cpu_all_mask;
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return node_to_cpumask_map[node];
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}
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#endif
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void __init arch_numa_init(void);
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int __init numa_add_memblk(int nodeid, u64 start, u64 end);
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void __init numa_set_distance(int from, int to, int distance);
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void __init numa_free_distance(void);
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void __init early_map_cpu_to_node(unsigned int cpu, int nid);
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void numa_store_cpu_info(unsigned int cpu);
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void numa_add_cpu(unsigned int cpu);
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void numa_remove_cpu(unsigned int cpu);
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#else /* CONFIG_NUMA */
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static inline void numa_store_cpu_info(unsigned int cpu) { }
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static inline void numa_add_cpu(unsigned int cpu) { }
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static inline void numa_remove_cpu(unsigned int cpu) { }
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static inline void arch_numa_init(void) { }
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static inline void early_map_cpu_to_node(unsigned int cpu, int nid) { }
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#endif /* CONFIG_NUMA */
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#endif /* __ASM_GENERIC_NUMA_H */
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