projects / mirror_qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| b85ea5fa PM |
1 | /* |
| 2 | * QEMU madvise wrapper functions | |
| 3 | * | |
| 4 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
| 5 | * See the COPYING file in the top-level directory. | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef QEMU_MADVISE_H | |
| 9 | #define QEMU_MADVISE_H | |
| 10 | ||
| 11 | #define QEMU_MADV_INVALID -1 | |
| 12 | ||
| 13 | #if defined(CONFIG_MADVISE) | |
| 14 | ||
| 15 | #define QEMU_MADV_WILLNEED MADV_WILLNEED | |
| 16 | #define QEMU_MADV_DONTNEED MADV_DONTNEED | |
| 17 | #ifdef MADV_DONTFORK | |
| 18 | #define QEMU_MADV_DONTFORK MADV_DONTFORK | |
| 19 | #else | |
| 20 | #define QEMU_MADV_DONTFORK QEMU_MADV_INVALID | |
| 21 | #endif | |
| 22 | #ifdef MADV_MERGEABLE | |
| 23 | #define QEMU_MADV_MERGEABLE MADV_MERGEABLE | |
| 24 | #else | |
| 25 | #define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID | |
| 26 | #endif | |
| 27 | #ifdef MADV_UNMERGEABLE | |
| 28 | #define QEMU_MADV_UNMERGEABLE MADV_UNMERGEABLE | |
| 29 | #else | |
| 30 | #define QEMU_MADV_UNMERGEABLE QEMU_MADV_INVALID | |
| 31 | #endif | |
| 32 | #ifdef MADV_DODUMP | |
| 33 | #define QEMU_MADV_DODUMP MADV_DODUMP | |
| 34 | #else | |
| 35 | #define QEMU_MADV_DODUMP QEMU_MADV_INVALID | |
| 36 | #endif | |
| 37 | #ifdef MADV_DONTDUMP | |
| 38 | #define QEMU_MADV_DONTDUMP MADV_DONTDUMP | |
| 39 | #else | |
| 40 | #define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID | |
| 41 | #endif | |
| 42 | #ifdef MADV_HUGEPAGE | |
| 43 | #define QEMU_MADV_HUGEPAGE MADV_HUGEPAGE | |
| 44 | #else | |
| 45 | #define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID | |
| 46 | #endif | |
| 47 | #ifdef MADV_NOHUGEPAGE | |
| 48 | #define QEMU_MADV_NOHUGEPAGE MADV_NOHUGEPAGE | |
| 49 | #else | |
| 50 | #define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID | |
| 51 | #endif | |
| 52 | #ifdef MADV_REMOVE | |
| 53 | #define QEMU_MADV_REMOVE MADV_REMOVE | |
| 54 | #else | |
| 55 | #define QEMU_MADV_REMOVE QEMU_MADV_DONTNEED | |
| 56 | #endif | |
| 57 | #ifdef MADV_POPULATE_WRITE | |
| 58 | #define QEMU_MADV_POPULATE_WRITE MADV_POPULATE_WRITE | |
| 59 | #else | |
| 60 | #define QEMU_MADV_POPULATE_WRITE QEMU_MADV_INVALID | |
| 61 | #endif | |
| 62 | ||
| 63 | #elif defined(CONFIG_POSIX_MADVISE) | |
| 64 | ||
| 65 | #define QEMU_MADV_WILLNEED POSIX_MADV_WILLNEED | |
| 66 | #define QEMU_MADV_DONTNEED POSIX_MADV_DONTNEED | |
| 67 | #define QEMU_MADV_DONTFORK QEMU_MADV_INVALID | |
| 68 | #define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID | |
| 69 | #define QEMU_MADV_UNMERGEABLE QEMU_MADV_INVALID | |
| 70 | #define QEMU_MADV_DODUMP QEMU_MADV_INVALID | |
| 71 | #define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID | |
| 72 | #define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID | |
| 73 | #define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID | |
| 74 | #define QEMU_MADV_REMOVE QEMU_MADV_DONTNEED | |
| 75 | #define QEMU_MADV_POPULATE_WRITE QEMU_MADV_INVALID | |
| 76 | ||
| 77 | #else /* no-op */ | |
| 78 | ||
| 79 | #define QEMU_MADV_WILLNEED QEMU_MADV_INVALID | |
| 80 | #define QEMU_MADV_DONTNEED QEMU_MADV_INVALID | |
| 81 | #define QEMU_MADV_DONTFORK QEMU_MADV_INVALID | |
| 82 | #define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID | |
| 83 | #define QEMU_MADV_UNMERGEABLE QEMU_MADV_INVALID | |
| 84 | #define QEMU_MADV_DODUMP QEMU_MADV_INVALID | |
| 85 | #define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID | |
| 86 | #define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID | |
| 87 | #define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID | |
| 88 | #define QEMU_MADV_REMOVE QEMU_MADV_INVALID | |
| 89 | #define QEMU_MADV_POPULATE_WRITE QEMU_MADV_INVALID | |
| 90 | ||
| 91 | #endif | |
| 92 | ||
| 93 | int qemu_madvise(void *addr, size_t len, int advice); | |
| 94 | ||
| 95 | #endif |