68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Author: Jianmin Lv <lvjianmin@loongson.cn>
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* Huacai Chen <chenhuacai@loongson.cn>
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*
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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*/
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#ifndef _ASM_LOONGARCH_NUMA_H
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#define _ASM_LOONGARCH_NUMA_H
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#include <linux/nodemask.h>
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#define NODE_ADDRSPACE_SHIFT 44
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#define pa_to_nid(addr) (((addr) & 0xf00000000000) >> NODE_ADDRSPACE_SHIFT)
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#define nid_to_addrbase(nid) (_ULCAST_(nid) << NODE_ADDRSPACE_SHIFT)
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#ifdef CONFIG_NUMA
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extern int numa_off;
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extern s16 __cpuid_to_node[CONFIG_NR_CPUS];
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extern nodemask_t numa_nodes_parsed __initdata;
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struct numa_memblk {
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u64 start;
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u64 end;
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int nid;
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};
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#define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
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struct numa_meminfo {
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int nr_blks;
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struct numa_memblk blk[NR_NODE_MEMBLKS];
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};
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extern int __init numa_add_memblk(int nodeid, u64 start, u64 end);
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extern void __init early_numa_add_cpu(int cpuid, s16 node);
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extern void numa_add_cpu(unsigned int cpu);
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extern void numa_remove_cpu(unsigned int cpu);
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static inline void numa_clear_node(int cpu)
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{
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}
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static inline void set_cpuid_to_node(int cpuid, s16 node)
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{
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__cpuid_to_node[cpuid] = node;
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}
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extern int early_cpu_to_node(int cpu);
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#else
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static inline void early_numa_add_cpu(int cpuid, s16 node) { }
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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 int early_cpu_to_node(int cpu)
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{
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return 0;
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}
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#endif /* CONFIG_NUMA */
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#endif /* _ASM_LOONGARCH_NUMA_H */
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