include/asm-powerpc/sparsemem.h

   1 #ifndef _ASM_POWERPC_SPARSEMEM_H
   2 #define _ASM_POWERPC_SPARSEMEM_H 1
   3
   4 #ifdef CONFIG_SPARSEMEM
   5 /*
   6  * SECTION_SIZE_BITS            2^N: how big each section will be
   7  * MAX_PHYSADDR_BITS            2^N: how much physical address space we have
   8  * MAX_PHYSMEM_BITS             2^N: how much memory we can have in that space
   9  */
  10 #define SECTION_SIZE_BITS       24
  11 #define MAX_PHYSADDR_BITS       44
  12 #define MAX_PHYSMEM_BITS        44
  13
  14 #ifdef CONFIG_MEMORY_HOTPLUG
  15 extern void create_section_mapping(unsigned long start, unsigned long end);
  16 #ifdef CONFIG_NUMA
  17 extern int hot_add_scn_to_nid(unsigned long scn_addr);
  18 #else
  19 static inline int hot_add_scn_to_nid(unsigned long scn_addr)
  20 {
  21         return 0;
  22 }
  23 #endif /* CONFIG_NUMA */
  24 #endif /* CONFIG_MEMORY_HOTPLUG */
  25
  26 #endif /* CONFIG_SPARSEMEM */
  27
  28 #endif /* _ASM_POWERPC_SPARSEMEM_H */