arch/x86/include/asm/numa_64.h

   1 #ifndef _ASM_X86_NUMA_64_H
   2 #define _ASM_X86_NUMA_64_H
   3
   4 #include <linux/nodemask.h>
   5 #include <asm/apicdef.h>
   6
   7 struct bootnode {
   8         u64 start;
   9         u64 end;
  10 };
  11
  12 extern int compute_hash_shift(struct bootnode *nodes, int numblks,
  13                               int *nodeids);
  14
  15 #define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT))
  16
  17 extern void numa_init_array(void);
  18 extern int numa_off;
  19
  20 extern s16 apicid_to_node[MAX_LOCAL_APIC];
  21
  22 extern unsigned long numa_free_all_bootmem(void);
  23 extern void setup_node_bootmem(int nodeid, unsigned long start,
  24                                unsigned long end);
  25
  26 #ifdef CONFIG_NUMA
  27 /*
  28  * Too small node sizes may confuse the VM badly. Usually they
  29  * result from BIOS bugs. So dont recognize nodes as standalone
  30  * NUMA entities that have less than this amount of RAM listed:
  31  */
  32 #define NODE_MIN_SIZE (4*1024*1024)
  33
  34 extern void __init init_cpu_to_node(void);
  35 extern void __cpuinit numa_set_node(int cpu, int node);
  36 extern void __cpuinit numa_clear_node(int cpu);
  37 extern void __cpuinit numa_add_cpu(int cpu);
  38 extern void __cpuinit numa_remove_cpu(int cpu);
  39
  40 #ifdef CONFIG_NUMA_EMU
  41 #define FAKE_NODE_MIN_SIZE      ((u64)32 << 20)
  42 #define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))
  43 void numa_emu_cmdline(char *);
  44 #endif /* CONFIG_NUMA_EMU */
  45 #else
  46 static inline void init_cpu_to_node(void)               { }
  47 static inline void numa_set_node(int cpu, int node)     { }
  48 static inline void numa_clear_node(int cpu)             { }
  49 static inline void numa_add_cpu(int cpu, int node)      { }
  50 static inline void numa_remove_cpu(int cpu)             { }
  51 #endif
  52
  53 #endif /* _ASM_X86_NUMA_64_H */