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a24f2fb70c
Commit 8748270821 ("mm: introduce numa_memblks") has moved
numa_memblks from x86 to the generic code, but LoongArch was left out
of this conversion.
This patch introduces the generic numa_memblks for LoongArch.
In detail:
1. Enable NUMA_MEMBLKS (but disable NUMA_EMU) in Kconfig;
2. Use generic definition for numa_memblk and numa_meminfo;
3. Use generic implementation for numa_add_memblk() and its friends;
4. Use generic implementation for numa_set_distance() and its friends;
5. Use generic implementation for memory_add_physaddr_to_nid() and its
friends.
Note: Disable NUMA_EMU because it needs more efforts and no obvious
demand now.
Tested-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Yuquan Wang <wangyuquan1236@phytium.com.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/* 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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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 void set_cpuid_to_node(int cpuid, s16 node) { }
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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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