| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 10 | #include <linux/config.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | |
| Anton Blanchard | 45fb6ce | 2005-11-11 14:22:35 +1100 | [diff] [blame] | 12 | /* |
| 13 | * generic non-linear memory support: |
| Andy Whitcroft | 145e664 | 2005-06-23 00:08:03 -0700 | [diff] [blame] | 14 | * |
| 15 | * 1) we will not split memory into more chunks than will fit into the |
| 16 | * flags field of the struct page |
| 17 | */ |
| 18 | |
| Andy Whitcroft | 145e664 | 2005-06-23 00:08:03 -0700 | [diff] [blame] | 19 | #ifdef CONFIG_NEED_MULTIPLE_NODES |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | |
| 21 | extern struct pglist_data *node_data[]; |
| Andy Whitcroft | 145e664 | 2005-06-23 00:08:03 -0700 | [diff] [blame] | 22 | /* |
| 23 | * Return a pointer to the node data for node n. |
| 24 | */ |
| 25 | #define NODE_DATA(nid) (node_data[nid]) |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | |
| 27 | /* |
| 28 | * Following are specific to this numa platform. |
| 29 | */ |
| 30 | |
| 31 | extern int numa_cpu_lookup_table[]; |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | extern cpumask_t numa_cpumask_lookup_table[]; |
| Mike Kravetz | 82dd26a | 2005-11-04 15:20:24 -0800 | [diff] [blame] | 33 | #ifdef CONFIG_MEMORY_HOTPLUG |
| 34 | extern unsigned long max_pfn; |
| 35 | #endif |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | /* |
| 38 | * Following are macros that each numa implmentation must define. |
| 39 | */ |
| 40 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) |
| 42 | #define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn) |
| 43 | |
| Andy Whitcroft | 145e664 | 2005-06-23 00:08:03 -0700 | [diff] [blame] | 44 | #endif /* CONFIG_NEED_MULTIPLE_NODES */ |
| 45 | |
| Andy Whitcroft | 510f8fa | 2005-06-23 00:08:01 -0700 | [diff] [blame] | 46 | #ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID |
| Anton Blanchard | 45fb6ce | 2005-11-11 14:22:35 +1100 | [diff] [blame] | 47 | extern int __init early_pfn_to_nid(unsigned long pfn); |
| Andy Whitcroft | 510f8fa | 2005-06-23 00:08:01 -0700 | [diff] [blame] | 48 | #endif |
| 49 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #endif /* _ASM_MMZONE_H_ */ |