18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef _ASM_X86_NUMA_H 38c2ecf20Sopenharmony_ci#define _ASM_X86_NUMA_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include <linux/nodemask.h> 68c2ecf20Sopenharmony_ci#include <linux/errno.h> 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci#include <asm/topology.h> 98c2ecf20Sopenharmony_ci#include <asm/apicdef.h> 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_ci#ifdef CONFIG_NUMA 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ci#define NR_NODE_MEMBLKS (MAX_NUMNODES*2) 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ciextern int numa_off; 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_ci/* 188c2ecf20Sopenharmony_ci * __apicid_to_node[] stores the raw mapping between physical apicid and 198c2ecf20Sopenharmony_ci * node and is used to initialize cpu_to_node mapping. 208c2ecf20Sopenharmony_ci * 218c2ecf20Sopenharmony_ci * The mapping may be overridden by apic->numa_cpu_node() on 32bit and thus 228c2ecf20Sopenharmony_ci * should be accessed by the accessors - set_apicid_to_node() and 238c2ecf20Sopenharmony_ci * numa_cpu_node(). 248c2ecf20Sopenharmony_ci */ 258c2ecf20Sopenharmony_ciextern s16 __apicid_to_node[MAX_LOCAL_APIC]; 268c2ecf20Sopenharmony_ciextern nodemask_t numa_nodes_parsed __initdata; 278c2ecf20Sopenharmony_ci 288c2ecf20Sopenharmony_ciextern int __init numa_add_memblk(int nodeid, u64 start, u64 end); 298c2ecf20Sopenharmony_ciextern void __init numa_set_distance(int from, int to, int distance); 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_cistatic inline void set_apicid_to_node(int apicid, s16 node) 328c2ecf20Sopenharmony_ci{ 338c2ecf20Sopenharmony_ci __apicid_to_node[apicid] = node; 348c2ecf20Sopenharmony_ci} 358c2ecf20Sopenharmony_ci 368c2ecf20Sopenharmony_ciextern int numa_cpu_node(int cpu); 378c2ecf20Sopenharmony_ci 388c2ecf20Sopenharmony_ci#else /* CONFIG_NUMA */ 398c2ecf20Sopenharmony_cistatic inline void set_apicid_to_node(int apicid, s16 node) 408c2ecf20Sopenharmony_ci{ 418c2ecf20Sopenharmony_ci} 428c2ecf20Sopenharmony_ci 438c2ecf20Sopenharmony_cistatic inline int numa_cpu_node(int cpu) 448c2ecf20Sopenharmony_ci{ 458c2ecf20Sopenharmony_ci return NUMA_NO_NODE; 468c2ecf20Sopenharmony_ci} 478c2ecf20Sopenharmony_ci#endif /* CONFIG_NUMA */ 488c2ecf20Sopenharmony_ci 498c2ecf20Sopenharmony_ci#ifdef CONFIG_X86_32 508c2ecf20Sopenharmony_ci# include <asm/numa_32.h> 518c2ecf20Sopenharmony_ci#endif 528c2ecf20Sopenharmony_ci 538c2ecf20Sopenharmony_ci#ifdef CONFIG_NUMA 548c2ecf20Sopenharmony_ciextern void numa_set_node(int cpu, int node); 558c2ecf20Sopenharmony_ciextern void numa_clear_node(int cpu); 568c2ecf20Sopenharmony_ciextern void __init init_cpu_to_node(void); 578c2ecf20Sopenharmony_ciextern void numa_add_cpu(int cpu); 588c2ecf20Sopenharmony_ciextern void numa_remove_cpu(int cpu); 598c2ecf20Sopenharmony_ciextern void init_gi_nodes(void); 608c2ecf20Sopenharmony_ci#else /* CONFIG_NUMA */ 618c2ecf20Sopenharmony_cistatic inline void numa_set_node(int cpu, int node) { } 628c2ecf20Sopenharmony_cistatic inline void numa_clear_node(int cpu) { } 638c2ecf20Sopenharmony_cistatic inline void init_cpu_to_node(void) { } 648c2ecf20Sopenharmony_cistatic inline void numa_add_cpu(int cpu) { } 658c2ecf20Sopenharmony_cistatic inline void numa_remove_cpu(int cpu) { } 668c2ecf20Sopenharmony_cistatic inline void init_gi_nodes(void) { } 678c2ecf20Sopenharmony_ci#endif /* CONFIG_NUMA */ 688c2ecf20Sopenharmony_ci 698c2ecf20Sopenharmony_ci#ifdef CONFIG_DEBUG_PER_CPU_MAPS 708c2ecf20Sopenharmony_civoid debug_cpumask_set_cpu(int cpu, int node, bool enable); 718c2ecf20Sopenharmony_ci#endif 728c2ecf20Sopenharmony_ci 738c2ecf20Sopenharmony_ci#ifdef CONFIG_NUMA_EMU 748c2ecf20Sopenharmony_ci#define FAKE_NODE_MIN_SIZE ((u64)32 << 20) 758c2ecf20Sopenharmony_ci#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL)) 768c2ecf20Sopenharmony_ciint numa_emu_cmdline(char *str); 778c2ecf20Sopenharmony_ci#else /* CONFIG_NUMA_EMU */ 788c2ecf20Sopenharmony_cistatic inline int numa_emu_cmdline(char *str) 798c2ecf20Sopenharmony_ci{ 808c2ecf20Sopenharmony_ci return -EINVAL; 818c2ecf20Sopenharmony_ci} 828c2ecf20Sopenharmony_ci#endif /* CONFIG_NUMA_EMU */ 838c2ecf20Sopenharmony_ci 848c2ecf20Sopenharmony_ci#endif /* _ASM_X86_NUMA_H */ 85