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63b852a6 AB |
1 | #ifndef __ASM_GENERIC_MMAN_COMMON_H |
2 | #define __ASM_GENERIC_MMAN_COMMON_H | |
5f6164f3 MT |
3 | |
4 | /* | |
5 | Author: Michael S. Tsirkin <mst@mellanox.co.il>, Mellanox Technologies Ltd. | |
6 | Based on: asm-xxx/mman.h | |
7 | */ | |
8 | ||
9 | #define PROT_READ 0x1 /* page can be read */ | |
10 | #define PROT_WRITE 0x2 /* page can be written */ | |
11 | #define PROT_EXEC 0x4 /* page can be executed */ | |
12 | #define PROT_SEM 0x8 /* page may be used for atomic ops */ | |
13 | #define PROT_NONE 0x0 /* page can not be accessed */ | |
14 | #define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ | |
15 | #define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */ | |
16 | ||
17 | #define MAP_SHARED 0x01 /* Share changes */ | |
18 | #define MAP_PRIVATE 0x02 /* Changes are private */ | |
19 | #define MAP_TYPE 0x0f /* Mask for type of mapping */ | |
20 | #define MAP_FIXED 0x10 /* Interpret addr exactly */ | |
21 | #define MAP_ANONYMOUS 0x20 /* don't use a file */ | |
ea637639 JZ |
22 | #ifdef CONFIG_MMAP_ALLOW_UNINITIALIZED |
23 | # define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be uninitialized */ | |
24 | #else | |
25 | # define MAP_UNINITIALIZED 0x0 /* Don't support this flag */ | |
26 | #endif | |
5f6164f3 MT |
27 | |
28 | #define MS_ASYNC 1 /* sync memory asynchronously */ | |
29 | #define MS_INVALIDATE 2 /* invalidate the caches */ | |
30 | #define MS_SYNC 4 /* synchronous memory sync */ | |
31 | ||
32 | #define MADV_NORMAL 0 /* no further special treatment */ | |
33 | #define MADV_RANDOM 1 /* expect random page references */ | |
34 | #define MADV_SEQUENTIAL 2 /* expect sequential page references */ | |
35 | #define MADV_WILLNEED 3 /* will need these pages */ | |
36 | #define MADV_DONTNEED 4 /* don't need these pages */ | |
37 | ||
38 | /* common parameters: try to keep these consistent across architectures */ | |
39 | #define MADV_REMOVE 9 /* remove these pages & resources */ | |
40 | #define MADV_DONTFORK 10 /* don't inherit across fork */ | |
41 | #define MADV_DOFORK 11 /* do inherit across fork */ | |
9893e49d | 42 | #define MADV_HWPOISON 100 /* poison a page for testing */ |
afcf938e | 43 | #define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */ |
5f6164f3 | 44 | |
d19f3524 HD |
45 | #define MADV_MERGEABLE 12 /* KSM may merge identical pages */ |
46 | #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ | |
47 | ||
a826e422 | 48 | #define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ |
1ddd6db4 | 49 | #define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ |
a826e422 | 50 | |
5f6164f3 | 51 | /* compatibility flags */ |
5f6164f3 MT |
52 | #define MAP_FILE 0 |
53 | ||
63b852a6 | 54 | #endif /* __ASM_GENERIC_MMAN_COMMON_H */ |