| 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_ |
| Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 9 | #ifdef __KERNEL__ |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | |
| Stephen Rothwell | 17ad6ea | 2009-03-19 22:03:22 +1100 | [diff] [blame] | 11 | #include <linux/cpumask.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | |
| Anton Blanchard | 45fb6ce | 2005-11-11 14:22:35 +1100 | [diff] [blame] | 13 | /* |
| 14 | * generic non-linear memory support: |
| Andy Whitcroft | 145e664 | 2005-06-23 00:08:03 -0700 | [diff] [blame] | 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 | |
| Andy Whitcroft | 145e664 | 2005-06-23 00:08:03 -0700 | [diff] [blame] | 20 | #ifdef CONFIG_NEED_MULTIPLE_NODES |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | |
| 22 | extern struct pglist_data *node_data[]; |
| Andy Whitcroft | 145e664 | 2005-06-23 00:08:03 -0700 | [diff] [blame] | 23 | /* |
| 24 | * Return a pointer to the node data for node n. |
| 25 | */ |
| 26 | #define NODE_DATA(nid) (node_data[nid]) |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | |
| 28 | /* |
| 29 | * Following are specific to this numa platform. |
| 30 | */ |
| 31 | |
| 32 | extern int numa_cpu_lookup_table[]; |
| Anton Blanchard | 25863de | 2010-04-26 15:32:43 +0000 | [diff] [blame] | 33 | extern cpumask_var_t node_to_cpumask_map[]; |
| Mike Kravetz | 82dd26a | 2005-11-04 15:20:24 -0800 | [diff] [blame] | 34 | #ifdef CONFIG_MEMORY_HOTPLUG |
| 35 | extern unsigned long max_pfn; |
| Nishanth Aravamudan | cd34206 | 2010-10-26 17:35:12 +0000 | [diff] [blame] | 36 | u64 memory_hotplug_max(void); |
| 37 | #else |
| 38 | #define memory_hotplug_max() memblock_end_of_DRAM() |
| Mike Kravetz | 82dd26a | 2005-11-04 15:20:24 -0800 | [diff] [blame] | 39 | #endif |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | /* |
| 42 | * Following are macros that each numa implmentation must define. |
| 43 | */ |
| 44 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) |
| 46 | #define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn) |
| 47 | |
| Nishanth Aravamudan | cd34206 | 2010-10-26 17:35:12 +0000 | [diff] [blame] | 48 | #else |
| 49 | #define memory_hotplug_max() memblock_end_of_DRAM() |
| Andy Whitcroft | 145e664 | 2005-06-23 00:08:03 -0700 | [diff] [blame] | 50 | #endif /* CONFIG_NEED_MULTIPLE_NODES */ |
| 51 | |
| Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 52 | #endif /* __KERNEL__ */ |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #endif /* _ASM_MMZONE_H_ */ |