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91 lines
2.4 KiB
91 lines
2.4 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _ASM_X86_NUMA_H |
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#define _ASM_X86_NUMA_H |
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#include <linux/nodemask.h> |
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#include <linux/errno.h> |
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#include <asm/topology.h> |
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#include <asm/apicdef.h> |
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#ifdef CONFIG_NUMA |
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#define NR_NODE_MEMBLKS (MAX_NUMNODES*2) |
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/* |
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* Too small node sizes may confuse the VM badly. Usually they |
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* result from BIOS bugs. So dont recognize nodes as standalone |
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* NUMA entities that have less than this amount of RAM listed: |
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*/ |
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#define NODE_MIN_SIZE (4*1024*1024) |
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extern int numa_off; |
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/* |
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* __apicid_to_node[] stores the raw mapping between physical apicid and |
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* node and is used to initialize cpu_to_node mapping. |
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* |
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* The mapping may be overridden by apic->numa_cpu_node() on 32bit and thus |
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* should be accessed by the accessors - set_apicid_to_node() and |
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* numa_cpu_node(). |
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*/ |
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extern s16 __apicid_to_node[MAX_LOCAL_APIC]; |
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extern nodemask_t numa_nodes_parsed __initdata; |
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extern int __init numa_add_memblk(int nodeid, u64 start, u64 end); |
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extern void __init numa_set_distance(int from, int to, int distance); |
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static inline void set_apicid_to_node(int apicid, s16 node) |
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{ |
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__apicid_to_node[apicid] = node; |
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} |
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extern int numa_cpu_node(int cpu); |
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#else /* CONFIG_NUMA */ |
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static inline void set_apicid_to_node(int apicid, s16 node) |
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{ |
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} |
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static inline int numa_cpu_node(int cpu) |
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{ |
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return NUMA_NO_NODE; |
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} |
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#endif /* CONFIG_NUMA */ |
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#ifdef CONFIG_X86_32 |
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# include <asm/numa_32.h> |
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#endif |
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#ifdef CONFIG_NUMA |
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extern void numa_set_node(int cpu, int node); |
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extern void numa_clear_node(int cpu); |
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extern void __init init_cpu_to_node(void); |
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extern void numa_add_cpu(int cpu); |
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extern void numa_remove_cpu(int cpu); |
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extern void init_gi_nodes(void); |
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#else /* CONFIG_NUMA */ |
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static inline void numa_set_node(int cpu, int node) { } |
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static inline void numa_clear_node(int cpu) { } |
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static inline void init_cpu_to_node(void) { } |
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static inline void numa_add_cpu(int cpu) { } |
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static inline void numa_remove_cpu(int cpu) { } |
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static inline void init_gi_nodes(void) { } |
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#endif /* CONFIG_NUMA */ |
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#ifdef CONFIG_DEBUG_PER_CPU_MAPS |
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void debug_cpumask_set_cpu(int cpu, int node, bool enable); |
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#endif |
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#ifdef CONFIG_NUMA_EMU |
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#define FAKE_NODE_MIN_SIZE ((u64)32 << 20) |
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#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL)) |
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int numa_emu_cmdline(char *str); |
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#else /* CONFIG_NUMA_EMU */ |
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static inline int numa_emu_cmdline(char *str) |
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{ |
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return -EINVAL; |
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} |
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#endif /* CONFIG_NUMA_EMU */ |
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#endif /* _ASM_X86_NUMA_H */
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