162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef _ASM_X86_NUMA_H 362306a36Sopenharmony_ci#define _ASM_X86_NUMA_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <linux/nodemask.h> 662306a36Sopenharmony_ci#include <linux/errno.h> 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci#include <asm/topology.h> 962306a36Sopenharmony_ci#include <asm/apicdef.h> 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci#ifdef CONFIG_NUMA 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_ci#define NR_NODE_MEMBLKS (MAX_NUMNODES*2) 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ciextern int numa_off; 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_ci/* 1862306a36Sopenharmony_ci * __apicid_to_node[] stores the raw mapping between physical apicid and 1962306a36Sopenharmony_ci * node and is used to initialize cpu_to_node mapping. 2062306a36Sopenharmony_ci * 2162306a36Sopenharmony_ci * The mapping may be overridden by apic->numa_cpu_node() on 32bit and thus 2262306a36Sopenharmony_ci * should be accessed by the accessors - set_apicid_to_node() and 2362306a36Sopenharmony_ci * numa_cpu_node(). 2462306a36Sopenharmony_ci */ 2562306a36Sopenharmony_ciextern s16 __apicid_to_node[MAX_LOCAL_APIC]; 2662306a36Sopenharmony_ciextern nodemask_t numa_nodes_parsed __initdata; 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_ciextern int __init numa_add_memblk(int nodeid, u64 start, u64 end); 2962306a36Sopenharmony_ciextern void __init numa_set_distance(int from, int to, int distance); 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_cistatic inline void set_apicid_to_node(int apicid, s16 node) 3262306a36Sopenharmony_ci{ 3362306a36Sopenharmony_ci __apicid_to_node[apicid] = node; 3462306a36Sopenharmony_ci} 3562306a36Sopenharmony_ci 3662306a36Sopenharmony_ciextern int numa_cpu_node(int cpu); 3762306a36Sopenharmony_ci 3862306a36Sopenharmony_ci#else /* CONFIG_NUMA */ 3962306a36Sopenharmony_cistatic inline void set_apicid_to_node(int apicid, s16 node) 4062306a36Sopenharmony_ci{ 4162306a36Sopenharmony_ci} 4262306a36Sopenharmony_ci 4362306a36Sopenharmony_cistatic inline int numa_cpu_node(int cpu) 4462306a36Sopenharmony_ci{ 4562306a36Sopenharmony_ci return NUMA_NO_NODE; 4662306a36Sopenharmony_ci} 4762306a36Sopenharmony_ci#endif /* CONFIG_NUMA */ 4862306a36Sopenharmony_ci 4962306a36Sopenharmony_ci#ifdef CONFIG_X86_32 5062306a36Sopenharmony_ci# include <asm/numa_32.h> 5162306a36Sopenharmony_ci#endif 5262306a36Sopenharmony_ci 5362306a36Sopenharmony_ci#ifdef CONFIG_NUMA 5462306a36Sopenharmony_ciextern void numa_set_node(int cpu, int node); 5562306a36Sopenharmony_ciextern void numa_clear_node(int cpu); 5662306a36Sopenharmony_ciextern void __init init_cpu_to_node(void); 5762306a36Sopenharmony_ciextern void numa_add_cpu(int cpu); 5862306a36Sopenharmony_ciextern void numa_remove_cpu(int cpu); 5962306a36Sopenharmony_ciextern void init_gi_nodes(void); 6062306a36Sopenharmony_ci#else /* CONFIG_NUMA */ 6162306a36Sopenharmony_cistatic inline void numa_set_node(int cpu, int node) { } 6262306a36Sopenharmony_cistatic inline void numa_clear_node(int cpu) { } 6362306a36Sopenharmony_cistatic inline void init_cpu_to_node(void) { } 6462306a36Sopenharmony_cistatic inline void numa_add_cpu(int cpu) { } 6562306a36Sopenharmony_cistatic inline void numa_remove_cpu(int cpu) { } 6662306a36Sopenharmony_cistatic inline void init_gi_nodes(void) { } 6762306a36Sopenharmony_ci#endif /* CONFIG_NUMA */ 6862306a36Sopenharmony_ci 6962306a36Sopenharmony_ci#ifdef CONFIG_DEBUG_PER_CPU_MAPS 7062306a36Sopenharmony_civoid debug_cpumask_set_cpu(int cpu, int node, bool enable); 7162306a36Sopenharmony_ci#endif 7262306a36Sopenharmony_ci 7362306a36Sopenharmony_ci#ifdef CONFIG_NUMA_EMU 7462306a36Sopenharmony_ci#define FAKE_NODE_MIN_SIZE ((u64)32 << 20) 7562306a36Sopenharmony_ci#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL)) 7662306a36Sopenharmony_ciint numa_emu_cmdline(char *str); 7762306a36Sopenharmony_ci#else /* CONFIG_NUMA_EMU */ 7862306a36Sopenharmony_cistatic inline int numa_emu_cmdline(char *str) 7962306a36Sopenharmony_ci{ 8062306a36Sopenharmony_ci return -EINVAL; 8162306a36Sopenharmony_ci} 8262306a36Sopenharmony_ci#endif /* CONFIG_NUMA_EMU */ 8362306a36Sopenharmony_ci 8462306a36Sopenharmony_ci#endif /* _ASM_X86_NUMA_H */ 85