1 enum zone_type { 2 ZONE_DMA, 3 ZONE_NORMAL, 4 ZONE_MOVABLE, 5 MAX_NR_ZONES 6 }; 7 static unsigned long arch_zone_lowest_possible_pfn[MAX_NR_ZONES]; 8 static unsigned long arch_zone_highest_possible_pfn[MAX_NR_ZONES]; free_area_init_nodes(unsigned long * max_zone_pfn)9void free_area_init_nodes(unsigned long *max_zone_pfn) 10 { 11 enum zone_type i; 12 for (i = 1; i < MAX_NR_ZONES; i++) 13 { 14 if (i == ZONE_MOVABLE) 15 continue; 16 unsigned long _x = max_zone_pfn[i]; 17 unsigned long _y = arch_zone_lowest_possible_pfn[i]; 18 arch_zone_highest_possible_pfn[i] = _x > _y ? _x : _y; 19 } 20 } 21