Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999 | |
3 | */ | |
4 | #ifndef _LINUX_BOOTMEM_H | |
5 | #define _LINUX_BOOTMEM_H | |
6 | ||
1da177e4 | 7 | #include <linux/mmzone.h> |
e786e86a | 8 | #include <asm/dma.h> |
1da177e4 LT |
9 | |
10 | /* | |
11 | * simple boot-time physical memory area allocator. | |
12 | */ | |
13 | ||
14 | extern unsigned long max_low_pfn; | |
15 | extern unsigned long min_low_pfn; | |
16 | ||
17 | /* | |
18 | * highest page | |
19 | */ | |
20 | extern unsigned long max_pfn; | |
21 | ||
92aa63a5 VG |
22 | #ifdef CONFIG_CRASH_DUMP |
23 | extern unsigned long saved_max_pfn; | |
24 | #endif | |
25 | ||
1da177e4 LT |
26 | /* |
27 | * node_bootmem_map is a map pointer - the bits represent all physical | |
28 | * memory pages (including holes) on the node. | |
29 | */ | |
30 | typedef struct bootmem_data { | |
3560e249 | 31 | unsigned long node_min_pfn; |
1da177e4 LT |
32 | unsigned long node_low_pfn; |
33 | void *node_bootmem_map; | |
5f2809e6 JW |
34 | unsigned long last_end_off; |
35 | unsigned long hint_idx; | |
679bc9fb | 36 | struct list_head list; |
1da177e4 LT |
37 | } bootmem_data_t; |
38 | ||
b61bfa3c JW |
39 | extern bootmem_data_t bootmem_node_data[]; |
40 | ||
f71bf0ca | 41 | extern unsigned long bootmem_bootmap_pages(unsigned long); |
223e8dc9 JW |
42 | |
43 | extern unsigned long init_bootmem_node(pg_data_t *pgdat, | |
44 | unsigned long freepfn, | |
45 | unsigned long startpfn, | |
46 | unsigned long endpfn); | |
f71bf0ca | 47 | extern unsigned long init_bootmem(unsigned long addr, unsigned long memend); |
223e8dc9 JW |
48 | |
49 | extern unsigned long free_all_bootmem_node(pg_data_t *pgdat); | |
50 | extern unsigned long free_all_bootmem(void); | |
51 | ||
52 | extern void free_bootmem_node(pg_data_t *pgdat, | |
53 | unsigned long addr, | |
54 | unsigned long size); | |
f71bf0ca | 55 | extern void free_bootmem(unsigned long addr, unsigned long size); |
223e8dc9 JW |
56 | |
57 | /* | |
58 | * Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE, | |
59 | * the architecture-specific code should honor this). | |
60 | * | |
61 | * If flags is 0, then the return value is always 0 (success). If | |
62 | * flags contains BOOTMEM_EXCLUSIVE, then -EBUSY is returned if the | |
63 | * memory already was reserved. | |
64 | */ | |
65 | #define BOOTMEM_DEFAULT 0 | |
66 | #define BOOTMEM_EXCLUSIVE (1<<0) | |
67 | ||
68 | extern int reserve_bootmem_node(pg_data_t *pgdat, | |
69 | unsigned long physaddr, | |
70 | unsigned long size, | |
71 | int flags); | |
72 | #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE | |
73 | extern int reserve_bootmem(unsigned long addr, unsigned long size, int flags); | |
74 | #endif | |
75 | ||
76 | extern void *__alloc_bootmem_nopanic(unsigned long size, | |
f71bf0ca FBH |
77 | unsigned long align, |
78 | unsigned long goal); | |
223e8dc9 | 79 | extern void *__alloc_bootmem(unsigned long size, |
f71bf0ca FBH |
80 | unsigned long align, |
81 | unsigned long goal); | |
82 | extern void *__alloc_bootmem_low(unsigned long size, | |
83 | unsigned long align, | |
84 | unsigned long goal); | |
223e8dc9 JW |
85 | extern void *__alloc_bootmem_node(pg_data_t *pgdat, |
86 | unsigned long size, | |
87 | unsigned long align, | |
88 | unsigned long goal); | |
89 | extern void *__alloc_bootmem_node_nopanic(pg_data_t *pgdat, | |
90 | unsigned long size, | |
91 | unsigned long align, | |
92 | unsigned long goal); | |
f71bf0ca FBH |
93 | extern void *__alloc_bootmem_low_node(pg_data_t *pgdat, |
94 | unsigned long size, | |
95 | unsigned long align, | |
96 | unsigned long goal); | |
1da177e4 | 97 | #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE |
1da177e4 | 98 | #define alloc_bootmem(x) \ |
71fb2e8f | 99 | __alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) |
74768ed8 JB |
100 | #define alloc_bootmem_nopanic(x) \ |
101 | __alloc_bootmem_nopanic(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) | |
1da177e4 | 102 | #define alloc_bootmem_low(x) \ |
71fb2e8f | 103 | __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0) |
1da177e4 | 104 | #define alloc_bootmem_pages(x) \ |
71fb2e8f | 105 | __alloc_bootmem(x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) |
74768ed8 JB |
106 | #define alloc_bootmem_pages_nopanic(x) \ |
107 | __alloc_bootmem_nopanic(x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) | |
1da177e4 | 108 | #define alloc_bootmem_low_pages(x) \ |
71fb2e8f | 109 | __alloc_bootmem_low(x, PAGE_SIZE, 0) |
1da177e4 | 110 | #define alloc_bootmem_node(pgdat, x) \ |
71fb2e8f | 111 | __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) |
1da177e4 | 112 | #define alloc_bootmem_pages_node(pgdat, x) \ |
71fb2e8f | 113 | __alloc_bootmem_node(pgdat, x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) |
1da177e4 | 114 | #define alloc_bootmem_low_pages_node(pgdat, x) \ |
71fb2e8f | 115 | __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0) |
c6af5e9f JW |
116 | #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */ |
117 | ||
118 | extern int reserve_bootmem_generic(unsigned long addr, unsigned long size, | |
119 | int flags); | |
223e8dc9 JW |
120 | |
121 | extern void *alloc_bootmem_section(unsigned long size, | |
122 | unsigned long section_nr); | |
1da177e4 | 123 | |
6f167ec7 DH |
124 | #ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP |
125 | extern void *alloc_remap(int nid, unsigned long size); | |
126 | #else | |
127 | static inline void *alloc_remap(int nid, unsigned long size) | |
128 | { | |
129 | return NULL; | |
130 | } | |
f71bf0ca | 131 | #endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */ |
6f167ec7 | 132 | |
9dec17eb | 133 | extern unsigned long __meminitdata nr_kernel_pages; |
8da38d7b | 134 | extern unsigned long __meminitdata nr_all_pages; |
1da177e4 | 135 | |
f71bf0ca FBH |
136 | extern void *alloc_large_system_hash(const char *tablename, |
137 | unsigned long bucketsize, | |
138 | unsigned long numentries, | |
139 | int scale, | |
140 | int flags, | |
141 | unsigned int *_hash_shift, | |
142 | unsigned int *_hash_mask, | |
143 | unsigned long limit); | |
1da177e4 | 144 | |
04903664 | 145 | #define HASH_EARLY 0x00000001 /* Allocating during early boot? */ |
1da177e4 LT |
146 | |
147 | /* Only NUMA needs hash distribution. | |
e073ae1b | 148 | * IA64 and x86_64 have sufficient vmalloc space. |
1da177e4 | 149 | */ |
e073ae1b | 150 | #if defined(CONFIG_NUMA) && (defined(CONFIG_IA64) || defined(CONFIG_X86_64)) |
1da177e4 LT |
151 | #define HASHDIST_DEFAULT 1 |
152 | #else | |
153 | #define HASHDIST_DEFAULT 0 | |
154 | #endif | |
f034b5d4 | 155 | extern int hashdist; /* Distribute hashes across NUMA nodes? */ |
1da177e4 LT |
156 | |
157 | ||
158 | #endif /* _LINUX_BOOTMEM_H */ |