arch/x86/include/asm/numa.h

   1 #ifndef _ASM_X86_NUMA_H
   2 #define _ASM_X86_NUMA_H
   3
   4 #include <linux/nodemask.h>
   5
   6 #include <asm/topology.h>
   7 #include <asm/apicdef.h>
   8
   9 #ifdef CONFIG_NUMA
  10
  11 #define NR_NODE_MEMBLKS         (MAX_NUMNODES*2)
  12
  13 /*
  14  * __apicid_to_node[] stores the raw mapping between physical apicid and
  15  * node and is used to initialize cpu_to_node mapping.
  16  *
  17  * The mapping may be overridden by apic->numa_cpu_node() on 32bit and thus
  18  * should be accessed by the accessors - set_apicid_to_node() and
  19  * numa_cpu_node().
  20  */
  21 extern s16 __apicid_to_node[MAX_LOCAL_APIC];
  22 extern nodemask_t numa_nodes_parsed __initdata;
  23
  24 extern int __init numa_add_memblk(int nodeid, u64 start, u64 end);
  25 extern void __init numa_set_distance(int from, int to, int distance);
  26
  27 static inline void set_apicid_to_node(int apicid, s16 node)
  28 {
  29         __apicid_to_node[apicid] = node;
  30 }
  31
  32 extern int __cpuinit numa_cpu_node(int cpu);
  33
  34 #else   /* CONFIG_NUMA */
  35 static inline void set_apicid_to_node(int apicid, s16 node)
  36 {
  37 }
  38
  39 static inline int numa_cpu_node(int cpu)
  40 {
  41         return NUMA_NO_NODE;
  42 }
  43 #endif  /* CONFIG_NUMA */
  44
  45 #ifdef CONFIG_X86_32
  46 # include "numa_32.h"
  47 #else
  48 # include "numa_64.h"
  49 #endif
  50
  51 #ifdef CONFIG_NUMA
  52 extern void __cpuinit numa_set_node(int cpu, int node);
  53 extern void __cpuinit numa_clear_node(int cpu);
  54 extern void __init numa_init_array(void);
  55 extern void __init init_cpu_to_node(void);
  56 extern void __cpuinit numa_add_cpu(int cpu);
  57 extern void __cpuinit numa_remove_cpu(int cpu);
  58 #else   /* CONFIG_NUMA */
  59 static inline void numa_set_node(int cpu, int node)     { }
  60 static inline void numa_clear_node(int cpu)             { }
  61 static inline void numa_init_array(void)                { }
  62 static inline void init_cpu_to_node(void)               { }
  63 static inline void numa_add_cpu(int cpu)                { }
  64 static inline void numa_remove_cpu(int cpu)             { }
  65 #endif  /* CONFIG_NUMA */
  66
  67 #ifdef CONFIG_DEBUG_PER_CPU_MAPS
  68 void debug_cpumask_set_cpu(int cpu, int node, bool enable);
  69 #endif
  70
  71 #endif  /* _ASM_X86_NUMA_H */