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- /* SPDX-License-Identifier: GPL-2.0 */
- #ifndef _ASM_X86_NUMA_H
- #define _ASM_X86_NUMA_H
- #include <linux/nodemask.h>
- #include <linux/errno.h>
- #include <asm/topology.h>
- #include <asm/apicdef.h>
- #ifdef CONFIG_NUMA
- #define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
- extern int numa_off;
- /*
- * __apicid_to_node[] stores the raw mapping between physical apicid and
- * node and is used to initialize cpu_to_node mapping.
- *
- * The mapping may be overridden by apic->numa_cpu_node() on 32bit and thus
- * should be accessed by the accessors - set_apicid_to_node() and
- * numa_cpu_node().
- */
- extern s16 __apicid_to_node[MAX_LOCAL_APIC];
- extern nodemask_t numa_nodes_parsed __initdata;
- extern int __init numa_add_memblk(int nodeid, u64 start, u64 end);
- extern void __init numa_set_distance(int from, int to, int distance);
- static inline void set_apicid_to_node(int apicid, s16 node)
- {
- __apicid_to_node[apicid] = node;
- }
- extern int numa_cpu_node(int cpu);
- #else /* CONFIG_NUMA */
- static inline void set_apicid_to_node(int apicid, s16 node)
- {
- }
- static inline int numa_cpu_node(int cpu)
- {
- return NUMA_NO_NODE;
- }
- #endif /* CONFIG_NUMA */
- #ifdef CONFIG_X86_32
- # include <asm/numa_32.h>
- #endif
- #ifdef CONFIG_NUMA
- extern void numa_set_node(int cpu, int node);
- extern void numa_clear_node(int cpu);
- extern void __init init_cpu_to_node(void);
- extern void numa_add_cpu(int cpu);
- extern void numa_remove_cpu(int cpu);
- extern void init_gi_nodes(void);
- #else /* CONFIG_NUMA */
- static inline void numa_set_node(int cpu, int node) { }
- static inline void numa_clear_node(int cpu) { }
- static inline void init_cpu_to_node(void) { }
- static inline void numa_add_cpu(int cpu) { }
- static inline void numa_remove_cpu(int cpu) { }
- static inline void init_gi_nodes(void) { }
- #endif /* CONFIG_NUMA */
- #ifdef CONFIG_DEBUG_PER_CPU_MAPS
- void debug_cpumask_set_cpu(int cpu, int node, bool enable);
- #endif
- #ifdef CONFIG_NUMA_EMU
- #define FAKE_NODE_MIN_SIZE ((u64)32 << 20)
- #define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))
- int numa_emu_cmdline(char *str);
- #else /* CONFIG_NUMA_EMU */
- static inline int numa_emu_cmdline(char *str)
- {
- return -EINVAL;
- }
- #endif /* CONFIG_NUMA_EMU */
- #endif /* _ASM_X86_NUMA_H */
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