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 { | |
31 | unsigned long node_boot_start; | |
32 | unsigned long node_low_pfn; | |
33 | void *node_bootmem_map; | |
34 | unsigned long last_offset; | |
35 | unsigned long last_pos; | |
36 | unsigned long last_success; /* Previous allocation point. To speed | |
37 | * up searching */ | |
679bc9fb | 38 | struct list_head list; |
1da177e4 LT |
39 | } bootmem_data_t; |
40 | ||
f71bf0ca FBH |
41 | extern unsigned long bootmem_bootmap_pages(unsigned long); |
42 | extern unsigned long init_bootmem(unsigned long addr, unsigned long memend); | |
43 | extern void free_bootmem(unsigned long addr, unsigned long size); | |
44 | extern void *__alloc_bootmem(unsigned long size, | |
45 | unsigned long align, | |
46 | unsigned long goal); | |
47 | extern void *__alloc_bootmem_nopanic(unsigned long size, | |
48 | unsigned long align, | |
49 | unsigned long goal); | |
50 | extern void *__alloc_bootmem_low(unsigned long size, | |
51 | unsigned long align, | |
52 | unsigned long goal); | |
53 | extern void *__alloc_bootmem_low_node(pg_data_t *pgdat, | |
54 | unsigned long size, | |
55 | unsigned long align, | |
56 | unsigned long goal); | |
57 | extern void *__alloc_bootmem_core(struct bootmem_data *bdata, | |
58 | unsigned long size, | |
bb0923a6 | 59 | unsigned long align, |
f71bf0ca FBH |
60 | unsigned long goal, |
61 | unsigned long limit); | |
62 | ||
1da177e4 | 63 | #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE |
f71bf0ca | 64 | extern void reserve_bootmem(unsigned long addr, unsigned long size); |
1da177e4 | 65 | #define alloc_bootmem(x) \ |
71fb2e8f | 66 | __alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) |
1da177e4 | 67 | #define alloc_bootmem_low(x) \ |
71fb2e8f | 68 | __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0) |
1da177e4 | 69 | #define alloc_bootmem_pages(x) \ |
71fb2e8f | 70 | __alloc_bootmem(x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) |
1da177e4 | 71 | #define alloc_bootmem_low_pages(x) \ |
71fb2e8f | 72 | __alloc_bootmem_low(x, PAGE_SIZE, 0) |
1da177e4 | 73 | #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */ |
f71bf0ca FBH |
74 | |
75 | extern unsigned long free_all_bootmem(void); | |
76 | extern unsigned long free_all_bootmem_node(pg_data_t *pgdat); | |
77 | extern void *__alloc_bootmem_node(pg_data_t *pgdat, | |
78 | unsigned long size, | |
79 | unsigned long align, | |
80 | unsigned long goal); | |
81 | extern unsigned long init_bootmem_node(pg_data_t *pgdat, | |
82 | unsigned long freepfn, | |
83 | unsigned long startpfn, | |
84 | unsigned long endpfn); | |
85 | extern void reserve_bootmem_node(pg_data_t *pgdat, | |
86 | unsigned long physaddr, | |
87 | unsigned long size); | |
88 | extern void free_bootmem_node(pg_data_t *pgdat, | |
89 | unsigned long addr, | |
90 | unsigned long size); | |
91 | ||
1da177e4 LT |
92 | #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE |
93 | #define alloc_bootmem_node(pgdat, x) \ | |
71fb2e8f | 94 | __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) |
1da177e4 | 95 | #define alloc_bootmem_pages_node(pgdat, x) \ |
71fb2e8f | 96 | __alloc_bootmem_node(pgdat, x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) |
1da177e4 | 97 | #define alloc_bootmem_low_pages_node(pgdat, x) \ |
71fb2e8f | 98 | __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0) |
1da177e4 LT |
99 | #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */ |
100 | ||
6f167ec7 DH |
101 | #ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP |
102 | extern void *alloc_remap(int nid, unsigned long size); | |
103 | #else | |
104 | static inline void *alloc_remap(int nid, unsigned long size) | |
105 | { | |
106 | return NULL; | |
107 | } | |
f71bf0ca | 108 | #endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */ |
6f167ec7 | 109 | |
9dec17eb | 110 | extern unsigned long __meminitdata nr_kernel_pages; |
86356ab1 | 111 | extern unsigned long nr_all_pages; |
1da177e4 | 112 | |
f71bf0ca FBH |
113 | extern void *alloc_large_system_hash(const char *tablename, |
114 | unsigned long bucketsize, | |
115 | unsigned long numentries, | |
116 | int scale, | |
117 | int flags, | |
118 | unsigned int *_hash_shift, | |
119 | unsigned int *_hash_mask, | |
120 | unsigned long limit); | |
1da177e4 LT |
121 | |
122 | #define HASH_HIGHMEM 0x00000001 /* Consider highmem? */ | |
123 | #define HASH_EARLY 0x00000002 /* Allocating during early boot? */ | |
124 | ||
125 | /* Only NUMA needs hash distribution. | |
126 | * IA64 is known to have sufficient vmalloc space. | |
127 | */ | |
128 | #if defined(CONFIG_NUMA) && defined(CONFIG_IA64) | |
129 | #define HASHDIST_DEFAULT 1 | |
130 | #else | |
131 | #define HASHDIST_DEFAULT 0 | |
132 | #endif | |
f034b5d4 | 133 | extern int hashdist; /* Distribute hashes across NUMA nodes? */ |
1da177e4 LT |
134 | |
135 | ||
136 | #endif /* _LINUX_BOOTMEM_H */ |