diff options
Diffstat (limited to 'arch/xtensa/include/uapi/asm/mman.h')
| -rw-r--r-- | arch/xtensa/include/uapi/asm/mman.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/arch/xtensa/include/uapi/asm/mman.h b/arch/xtensa/include/uapi/asm/mman.h new file mode 100644 index 000000000000..25bc6c1309c3 --- /dev/null +++ b/arch/xtensa/include/uapi/asm/mman.h | |||
| @@ -0,0 +1,96 @@ | |||
| 1 | /* | ||
| 2 | * include/asm-xtensa/mman.h | ||
| 3 | * | ||
| 4 | * Xtensa Processor memory-manager definitions | ||
| 5 | * | ||
| 6 | * This file is subject to the terms and conditions of the GNU General Public | ||
| 7 | * License. See the file "COPYING" in the main directory of this archive | ||
| 8 | * for more details. | ||
| 9 | * | ||
| 10 | * Copyright (C) 1995 by Ralf Baechle | ||
| 11 | * Copyright (C) 2001 - 2005 Tensilica Inc. | ||
| 12 | */ | ||
| 13 | |||
| 14 | #ifndef _XTENSA_MMAN_H | ||
| 15 | #define _XTENSA_MMAN_H | ||
| 16 | |||
| 17 | /* | ||
| 18 | * Protections are chosen from these bits, OR'd together. The | ||
| 19 | * implementation does not necessarily support PROT_EXEC or PROT_WRITE | ||
| 20 | * without PROT_READ. The only guarantees are that no writing will be | ||
| 21 | * allowed without PROT_WRITE and no access will be allowed for PROT_NONE. | ||
| 22 | */ | ||
| 23 | |||
| 24 | #define PROT_NONE 0x0 /* page can not be accessed */ | ||
| 25 | #define PROT_READ 0x1 /* page can be read */ | ||
| 26 | #define PROT_WRITE 0x2 /* page can be written */ | ||
| 27 | #define PROT_EXEC 0x4 /* page can be executed */ | ||
| 28 | |||
| 29 | #define PROT_SEM 0x10 /* page may be used for atomic ops */ | ||
| 30 | #define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ | ||
| 31 | #define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end fo growsup vma */ | ||
| 32 | |||
| 33 | /* | ||
| 34 | * Flags for mmap | ||
| 35 | */ | ||
| 36 | #define MAP_SHARED 0x001 /* Share changes */ | ||
| 37 | #define MAP_PRIVATE 0x002 /* Changes are private */ | ||
| 38 | #define MAP_TYPE 0x00f /* Mask for type of mapping */ | ||
| 39 | #define MAP_FIXED 0x010 /* Interpret addr exactly */ | ||
| 40 | |||
| 41 | /* not used by linux, but here to make sure we don't clash with ABI defines */ | ||
| 42 | #define MAP_RENAME 0x020 /* Assign page to file */ | ||
| 43 | #define MAP_AUTOGROW 0x040 /* File may grow by writing */ | ||
| 44 | #define MAP_LOCAL 0x080 /* Copy on fork/sproc */ | ||
| 45 | #define MAP_AUTORSRV 0x100 /* Logical swap reserved on demand */ | ||
| 46 | |||
| 47 | /* These are linux-specific */ | ||
| 48 | #define MAP_NORESERVE 0x0400 /* don't check for reservations */ | ||
| 49 | #define MAP_ANONYMOUS 0x0800 /* don't use a file */ | ||
| 50 | #define MAP_GROWSDOWN 0x1000 /* stack-like segment */ | ||
| 51 | #define MAP_DENYWRITE 0x2000 /* ETXTBSY */ | ||
| 52 | #define MAP_EXECUTABLE 0x4000 /* mark it as an executable */ | ||
| 53 | #define MAP_LOCKED 0x8000 /* pages are locked */ | ||
| 54 | #define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */ | ||
| 55 | #define MAP_NONBLOCK 0x20000 /* do not block on IO */ | ||
| 56 | #define MAP_STACK 0x40000 /* give out an address that is best suited for process/thread stacks */ | ||
| 57 | #define MAP_HUGETLB 0x80000 /* create a huge page mapping */ | ||
| 58 | |||
| 59 | /* | ||
| 60 | * Flags for msync | ||
| 61 | */ | ||
| 62 | #define MS_ASYNC 0x0001 /* sync memory asynchronously */ | ||
| 63 | #define MS_INVALIDATE 0x0002 /* invalidate mappings & caches */ | ||
| 64 | #define MS_SYNC 0x0004 /* synchronous memory sync */ | ||
| 65 | |||
| 66 | /* | ||
| 67 | * Flags for mlockall | ||
| 68 | */ | ||
| 69 | #define MCL_CURRENT 1 /* lock all current mappings */ | ||
| 70 | #define MCL_FUTURE 2 /* lock all future mappings */ | ||
| 71 | |||
| 72 | #define MADV_NORMAL 0 /* no further special treatment */ | ||
| 73 | #define MADV_RANDOM 1 /* expect random page references */ | ||
| 74 | #define MADV_SEQUENTIAL 2 /* expect sequential page references */ | ||
| 75 | #define MADV_WILLNEED 3 /* will need these pages */ | ||
| 76 | #define MADV_DONTNEED 4 /* don't need these pages */ | ||
| 77 | |||
| 78 | /* common parameters: try to keep these consistent across architectures */ | ||
| 79 | #define MADV_REMOVE 9 /* remove these pages & resources */ | ||
| 80 | #define MADV_DONTFORK 10 /* don't inherit across fork */ | ||
| 81 | #define MADV_DOFORK 11 /* do inherit across fork */ | ||
| 82 | |||
| 83 | #define MADV_MERGEABLE 12 /* KSM may merge identical pages */ | ||
| 84 | #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ | ||
| 85 | |||
| 86 | #define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ | ||
| 87 | #define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ | ||
| 88 | |||
| 89 | #define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, | ||
| 90 | overrides the coredump filter bits */ | ||
| 91 | #define MADV_DODUMP 17 /* Clear the MADV_NODUMP flag */ | ||
| 92 | |||
| 93 | /* compatibility flags */ | ||
| 94 | #define MAP_FILE 0 | ||
| 95 | |||
| 96 | #endif /* _XTENSA_MMAN_H */ | ||
