arch/ia64/include/asm/sparsemem.h

   1 #ifndef _ASM_IA64_SPARSEMEM_H
   2 #define _ASM_IA64_SPARSEMEM_H
   3
   4 #ifdef CONFIG_SPARSEMEM
   5 /*
   6  * SECTION_SIZE_BITS            2^N: how big each section will be
   7  * MAX_PHYSMEM_BITS             2^N: how much memory we can have in that space
   8  */
   9
  10 #define SECTION_SIZE_BITS       (30)
  11 #define MAX_PHYSMEM_BITS        (50)
  12 #ifdef CONFIG_FORCE_MAX_ZONEORDER
  13 #if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
  14 #undef SECTION_SIZE_BITS
  15 #define SECTION_SIZE_BITS (CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT)
  16 #endif
  17 #endif
  18
  19 #endif /* CONFIG_SPARSEMEM */
  20 #endif /* _ASM_IA64_SPARSEMEM_H */