projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef __ALPHA_MMAN_H__ |
| 2 | #define __ALPHA_MMAN_H__ | |
| 3 | ||
| 4 | #define PROT_READ 0x1 /* page can be read */ | |
| 5 | #define PROT_WRITE 0x2 /* page can be written */ | |
| 6 | #define PROT_EXEC 0x4 /* page can be executed */ | |
| 7 | #define PROT_SEM 0x8 /* page may be used for atomic ops */ | |
| 8 | #define PROT_NONE 0x0 /* page can not be accessed */ | |
| 9 | #define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ | |
| 10 | #define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */ | |
| 11 | ||
| 12 | #define MAP_SHARED 0x01 /* Share changes */ | |
| 13 | #define MAP_PRIVATE 0x02 /* Changes are private */ | |
| 14 | #define MAP_TYPE 0x0f /* Mask for type of mapping (OSF/1 is _wrong_) */ | |
| 15 | #define MAP_FIXED 0x100 /* Interpret addr exactly */ | |
| 16 | #define MAP_ANONYMOUS 0x10 /* don't use a file */ | |
| 17 | ||
| 18 | /* not used by linux, but here to make sure we don't clash with OSF/1 defines */ | |
| 19 | #define _MAP_HASSEMAPHORE 0x0200 | |
| 20 | #define _MAP_INHERIT 0x0400 | |
| 21 | #define _MAP_UNALIGNED 0x0800 | |
| 22 | ||
| 23 | /* These are linux-specific */ | |
| 24 | #define MAP_GROWSDOWN 0x01000 /* stack-like segment */ | |
| 25 | #define MAP_DENYWRITE 0x02000 /* ETXTBSY */ | |
| 26 | #define MAP_EXECUTABLE 0x04000 /* mark it as an executable */ | |
| 27 | #define MAP_LOCKED 0x08000 /* lock the mapping */ | |
| 28 | #define MAP_NORESERVE 0x10000 /* don't check for reservations */ | |
| 29 | #define MAP_POPULATE 0x20000 /* populate (prefault) pagetables */ | |
| 30 | #define MAP_NONBLOCK 0x40000 /* do not block on IO */ | |
| 90f72aa5 AB |
31 | #define MAP_STACK 0x80000 /* give out an address that is best suited for process/thread stacks */ |
| 32 | #define MAP_HUGETLB 0x100000 /* create a huge page mapping */ | |
| 1da177e4 LT |
33 | |
| 34 | #define MS_ASYNC 1 /* sync memory asynchronously */ | |
| 35 | #define MS_SYNC 2 /* synchronous memory sync */ | |
| 36 | #define MS_INVALIDATE 4 /* invalidate the caches */ | |
| 37 | ||
| 38 | #define MCL_CURRENT 8192 /* lock all currently mapped pages */ | |
| 39 | #define MCL_FUTURE 16384 /* lock all additions to address space */ | |
| b0f205c2 EM |
40 | #define MCL_ONFAULT 32768 /* lock all pages that are faulted in */ |
| 41 | ||
| 42 | #define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */ | |
| 1da177e4 LT |
43 | |
| 44 | #define MADV_NORMAL 0 /* no further special treatment */ | |
| 45 | #define MADV_RANDOM 1 /* expect random page references */ | |
| 46 | #define MADV_SEQUENTIAL 2 /* expect sequential page references */ | |
| 47 | #define MADV_WILLNEED 3 /* will need these pages */ | |
| 48 | #define MADV_SPACEAVAIL 5 /* ensure resources are available */ | |
| 49 | #define MADV_DONTNEED 6 /* don't need these pages */ | |
| ef58978f | 50 | #define MADV_FREE 7 /* free pages only if memory pressure */ |
| 5f6164f3 MT |
51 | |
| 52 | /* common/generic parameters */ | |
| 21f55b01 | 53 | #define MADV_FREE 8 /* free pages only if memory pressure */ |
| 5f6164f3 MT |
54 | #define MADV_REMOVE 9 /* remove these pages & resources */ |
| 55 | #define MADV_DONTFORK 10 /* don't inherit across fork */ | |
| 56 | #define MADV_DOFORK 11 /* do inherit across fork */ | |
| 1da177e4 | 57 | |
| d19f3524 HD |
58 | #define MADV_MERGEABLE 12 /* KSM may merge identical pages */ |
| 59 | #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ | |
| 60 | ||
| a826e422 | 61 | #define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ |
| 1ddd6db4 | 62 | #define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ |
| a826e422 | 63 | |
| accb61fe JB |
64 | #define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, |
| 65 | overrides the coredump filter bits */ | |
| 66 | #define MADV_DODUMP 17 /* Clear the MADV_NODUMP flag */ | |
| 67 | ||
| 1da177e4 | 68 | /* compatibility flags */ |
| 1da177e4 LT |
69 | #define MAP_FILE 0 |
| 70 | ||
| 42d7395f AK |
71 | /* |
| 72 | * When MAP_HUGETLB is set bits [26:31] encode the log2 of the huge page size. | |
| 73 | * This gives us 6 bits, which is enough until someone invents 128 bit address | |
| 74 | * spaces. | |
| 75 | * | |
| 76 | * Assume these are all power of twos. | |
| 77 | * When 0 use the default page size. | |
| 78 | */ | |
| 79 | #define MAP_HUGE_SHIFT 26 | |
| 80 | #define MAP_HUGE_MASK 0x3f | |
| 81 | ||
| 1da177e4 | 82 | #endif /* __ALPHA_MMAN_H__ */ |