1 /* 2 * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99 3 * 4 * PowerPC64 port: 5 * Copyright (C) 2002 Anton Blanchard, IBM Corp. 6 */ 7 #ifndef _ASM_MMZONE_H_ 8 #define _ASM_MMZONE_H_ 9 #ifdef __KERNEL__ 10 11 #include <linux/cpumask.h> 12 13 /* 14 * generic non-linear memory support: 15 * 16 * 1) we will not split memory into more chunks than will fit into the 17 * flags field of the struct page 18 */ 19 20 #ifdef CONFIG_NEED_MULTIPLE_NODES 21 22 extern struct pglist_data *node_data[]; 23 /* 24 * Return a pointer to the node data for node n. 25 */ 26 #define NODE_DATA(nid) (node_data[nid]) 27 28 /* 29 * Following are specific to this numa platform. 30 */ 31 32 extern int numa_cpu_lookup_table[]; 33 extern cpumask_var_t node_to_cpumask_map[]; 34 #ifdef CONFIG_MEMORY_HOTPLUG 35 extern unsigned long max_pfn; 36 #endif 37 38 /* 39 * Following are macros that each numa implmentation must define. 40 */ 41 42 #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) 43 #define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn) 44 45 #endif /* CONFIG_NEED_MULTIPLE_NODES */ 46 47 #endif /* __KERNEL__ */ 48 #endif /* _ASM_MMZONE_H_ */ 49