diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/bootmem.h |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/linux/bootmem.h')
-rw-r--r-- | include/linux/bootmem.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h new file mode 100644 index 00000000000..0dd8ca1a3d5 --- /dev/null +++ b/include/linux/bootmem.h | |||
@@ -0,0 +1,96 @@ | |||
1 | /* | ||
2 | * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999 | ||
3 | */ | ||
4 | #ifndef _LINUX_BOOTMEM_H | ||
5 | #define _LINUX_BOOTMEM_H | ||
6 | |||
7 | #include <asm/pgtable.h> | ||
8 | #include <asm/dma.h> | ||
9 | #include <linux/cache.h> | ||
10 | #include <linux/init.h> | ||
11 | #include <linux/mmzone.h> | ||
12 | |||
13 | /* | ||
14 | * simple boot-time physical memory area allocator. | ||
15 | */ | ||
16 | |||
17 | extern unsigned long max_low_pfn; | ||
18 | extern unsigned long min_low_pfn; | ||
19 | |||
20 | /* | ||
21 | * highest page | ||
22 | */ | ||
23 | extern unsigned long max_pfn; | ||
24 | |||
25 | /* | ||
26 | * node_bootmem_map is a map pointer - the bits represent all physical | ||
27 | * memory pages (including holes) on the node. | ||
28 | */ | ||
29 | typedef struct bootmem_data { | ||
30 | unsigned long node_boot_start; | ||
31 | unsigned long node_low_pfn; | ||
32 | void *node_bootmem_map; | ||
33 | unsigned long last_offset; | ||
34 | unsigned long last_pos; | ||
35 | unsigned long last_success; /* Previous allocation point. To speed | ||
36 | * up searching */ | ||
37 | } bootmem_data_t; | ||
38 | |||
39 | extern unsigned long __init bootmem_bootmap_pages (unsigned long); | ||
40 | extern unsigned long __init init_bootmem (unsigned long addr, unsigned long memend); | ||
41 | extern void __init free_bootmem (unsigned long addr, unsigned long size); | ||
42 | extern void * __init __alloc_bootmem (unsigned long size, unsigned long align, unsigned long goal); | ||
43 | #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE | ||
44 | extern void __init reserve_bootmem (unsigned long addr, unsigned long size); | ||
45 | #define alloc_bootmem(x) \ | ||
46 | __alloc_bootmem((x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) | ||
47 | #define alloc_bootmem_low(x) \ | ||
48 | __alloc_bootmem((x), SMP_CACHE_BYTES, 0) | ||
49 | #define alloc_bootmem_pages(x) \ | ||
50 | __alloc_bootmem((x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) | ||
51 | #define alloc_bootmem_low_pages(x) \ | ||
52 | __alloc_bootmem((x), PAGE_SIZE, 0) | ||
53 | #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */ | ||
54 | extern unsigned long __init free_all_bootmem (void); | ||
55 | |||
56 | extern unsigned long __init init_bootmem_node (pg_data_t *pgdat, unsigned long freepfn, unsigned long startpfn, unsigned long endpfn); | ||
57 | extern void __init reserve_bootmem_node (pg_data_t *pgdat, unsigned long physaddr, unsigned long size); | ||
58 | extern void __init free_bootmem_node (pg_data_t *pgdat, unsigned long addr, unsigned long size); | ||
59 | extern unsigned long __init free_all_bootmem_node (pg_data_t *pgdat); | ||
60 | extern void * __init __alloc_bootmem_node (pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal); | ||
61 | #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE | ||
62 | #define alloc_bootmem_node(pgdat, x) \ | ||
63 | __alloc_bootmem_node((pgdat), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) | ||
64 | #define alloc_bootmem_pages_node(pgdat, x) \ | ||
65 | __alloc_bootmem_node((pgdat), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) | ||
66 | #define alloc_bootmem_low_pages_node(pgdat, x) \ | ||
67 | __alloc_bootmem_node((pgdat), (x), PAGE_SIZE, 0) | ||
68 | #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */ | ||
69 | |||
70 | extern unsigned long __initdata nr_kernel_pages; | ||
71 | extern unsigned long __initdata nr_all_pages; | ||
72 | |||
73 | extern void *__init alloc_large_system_hash(const char *tablename, | ||
74 | unsigned long bucketsize, | ||
75 | unsigned long numentries, | ||
76 | int scale, | ||
77 | int flags, | ||
78 | unsigned int *_hash_shift, | ||
79 | unsigned int *_hash_mask, | ||
80 | unsigned long limit); | ||
81 | |||
82 | #define HASH_HIGHMEM 0x00000001 /* Consider highmem? */ | ||
83 | #define HASH_EARLY 0x00000002 /* Allocating during early boot? */ | ||
84 | |||
85 | /* Only NUMA needs hash distribution. | ||
86 | * IA64 is known to have sufficient vmalloc space. | ||
87 | */ | ||
88 | #if defined(CONFIG_NUMA) && defined(CONFIG_IA64) | ||
89 | #define HASHDIST_DEFAULT 1 | ||
90 | #else | ||
91 | #define HASHDIST_DEFAULT 0 | ||
92 | #endif | ||
93 | extern int __initdata hashdist; /* Distribute hashes across NUMA nodes? */ | ||
94 | |||
95 | |||
96 | #endif /* _LINUX_BOOTMEM_H */ | ||