1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _ASM_X86_NUMA_H |
3 | #define _ASM_X86_NUMA_H |
4 | |
5 | #include <linux/nodemask.h> |
6 | #include <linux/errno.h> |
7 | |
8 | #include <asm/topology.h> |
9 | #include <asm/apicdef.h> |
10 | |
11 | #ifdef CONFIG_NUMA |
12 | |
13 | #define NR_NODE_MEMBLKS (MAX_NUMNODES*2) |
14 | |
15 | extern int numa_off; |
16 | |
17 | /* |
18 | * __apicid_to_node[] stores the raw mapping between physical apicid and |
19 | * node and is used to initialize cpu_to_node mapping. |
20 | * |
21 | * The mapping may be overridden by apic->numa_cpu_node() on 32bit and thus |
22 | * should be accessed by the accessors - set_apicid_to_node() and |
23 | * numa_cpu_node(). |
24 | */ |
25 | extern s16 __apicid_to_node[MAX_LOCAL_APIC]; |
26 | extern nodemask_t numa_nodes_parsed __initdata; |
27 | |
28 | extern int __init numa_add_memblk(int nodeid, u64 start, u64 end); |
29 | extern void __init numa_set_distance(int from, int to, int distance); |
30 | |
31 | static inline void set_apicid_to_node(int apicid, s16 node) |
32 | { |
33 | __apicid_to_node[apicid] = node; |
34 | } |
35 | |
36 | extern int numa_cpu_node(int cpu); |
37 | |
38 | #else /* CONFIG_NUMA */ |
39 | static inline void set_apicid_to_node(int apicid, s16 node) |
40 | { |
41 | } |
42 | |
43 | static inline int numa_cpu_node(int cpu) |
44 | { |
45 | return NUMA_NO_NODE; |
46 | } |
47 | #endif /* CONFIG_NUMA */ |
48 | |
49 | #ifdef CONFIG_X86_32 |
50 | # include <asm/numa_32.h> |
51 | #endif |
52 | |
53 | #ifdef CONFIG_NUMA |
54 | extern void numa_set_node(int cpu, int node); |
55 | extern void numa_clear_node(int cpu); |
56 | extern void __init init_cpu_to_node(void); |
57 | extern void numa_add_cpu(int cpu); |
58 | extern void numa_remove_cpu(int cpu); |
59 | extern void init_gi_nodes(void); |
60 | #else /* CONFIG_NUMA */ |
61 | static inline void numa_set_node(int cpu, int node) { } |
62 | static inline void numa_clear_node(int cpu) { } |
63 | static inline void init_cpu_to_node(void) { } |
64 | static inline void numa_add_cpu(int cpu) { } |
65 | static inline void numa_remove_cpu(int cpu) { } |
66 | static inline void init_gi_nodes(void) { } |
67 | #endif /* CONFIG_NUMA */ |
68 | |
69 | #ifdef CONFIG_DEBUG_PER_CPU_MAPS |
70 | void debug_cpumask_set_cpu(int cpu, int node, bool enable); |
71 | #endif |
72 | |
73 | #ifdef CONFIG_NUMA_EMU |
74 | #define FAKE_NODE_MIN_SIZE ((u64)32 << 20) |
75 | #define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL)) |
76 | int numa_emu_cmdline(char *str); |
77 | #else /* CONFIG_NUMA_EMU */ |
78 | static inline int numa_emu_cmdline(char *str) |
79 | { |
80 | return -EINVAL; |
81 | } |
82 | #endif /* CONFIG_NUMA_EMU */ |
83 | |
84 | #endif /* _ASM_X86_NUMA_H */ |
85 | |