···1515#include <asm/page.h>1616#include <asm/meminit.h>17171818+#ifdef CONFIG_DISCONTIGMEM1919+1820static inline int pfn_to_nid(unsigned long pfn)1921{2022#ifdef CONFIG_NUMA···3028 return 0;3129#endif3230}3333-3434-#ifdef CONFIG_DISCONTIGMEM35313632#ifdef CONFIG_IA64_DIG /* DIG systems are small */3733# define MAX_PHYSNODE_ID 8