1 #ifndef _ASM_X86_NUMA_H
2 #define _ASM_X86_NUMA_H
4 #include <linux/nodemask.h>
6 #include <asm/topology.h>
7 #include <asm/apicdef.h>
11 #define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
12 #define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT))
15 * Too small node sizes may confuse the VM badly. Usually they
16 * result from BIOS bugs. So dont recognize nodes as standalone
17 * NUMA entities that have less than this amount of RAM listed:
19 #define NODE_MIN_SIZE (4*1024*1024)
24 * __apicid_to_node[] stores the raw mapping between physical apicid and
25 * node and is used to initialize cpu_to_node mapping.
27 * The mapping may be overridden by apic->numa_cpu_node() on 32bit and thus
28 * should be accessed by the accessors - set_apicid_to_node() and
31 extern s16 __apicid_to_node[MAX_LOCAL_APIC];
32 extern nodemask_t numa_nodes_parsed __initdata;
34 extern int __init numa_add_memblk(int nodeid, u64 start, u64 end);
35 extern void __init numa_set_distance(int from, int to, int distance);
37 static inline void set_apicid_to_node(int apicid, s16 node)
39 __apicid_to_node[apicid] = node;
42 extern int __cpuinit numa_cpu_node(int cpu);
44 #else /* CONFIG_NUMA */
45 static inline void set_apicid_to_node(int apicid, s16 node)
49 static inline int numa_cpu_node(int cpu)
53 #endif /* CONFIG_NUMA */
56 # include <asm/numa_32.h>
60 extern void numa_set_node(int cpu, int node);
61 extern void numa_clear_node(int cpu);
62 extern void __init init_cpu_to_node(void);
63 extern void __cpuinit numa_add_cpu(int cpu);
64 extern void __cpuinit numa_remove_cpu(int cpu);
65 #else /* CONFIG_NUMA */
66 static inline void numa_set_node(int cpu, int node) { }
67 static inline void numa_clear_node(int cpu) { }
68 static inline void init_cpu_to_node(void) { }
69 static inline void numa_add_cpu(int cpu) { }
70 static inline void numa_remove_cpu(int cpu) { }
71 #endif /* CONFIG_NUMA */
73 #ifdef CONFIG_DEBUG_PER_CPU_MAPS
74 void debug_cpumask_set_cpu(int cpu, int node, bool enable);
77 #ifdef CONFIG_NUMA_EMU
78 #define FAKE_NODE_MIN_SIZE ((u64)32 << 20)
79 #define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))
80 void numa_emu_cmdline(char *);
81 #endif /* CONFIG_NUMA_EMU */
83 #endif /* _ASM_X86_NUMA_H */