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 */ 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 */ 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 */ 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 */ 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 */ 50 51 /* common/generic parameters */ 52 #define MADV_FREE 8 /* free pages only if memory pressure */ 53 #define MADV_REMOVE 9 /* remove these pages & resources */ 54 #define MADV_DONTFORK 10 /* don't inherit across fork */ 55 #define MADV_DOFORK 11 /* do inherit across fork */ 56 57 #define MADV_MERGEABLE 12 /* KSM may merge identical pages */ 58 #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ 59 60 #define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ 61 #define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ 62 63 #define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, 64 overrides the coredump filter bits */ 65 #define MADV_DODUMP 17 /* Clear the MADV_NODUMP flag */ 66 67 /* compatibility flags */ 68 #define MAP_FILE 0 69 70 /* 71 * When MAP_HUGETLB is set bits [26:31] encode the log2 of the huge page size. 72 * This gives us 6 bits, which is enough until someone invents 128 bit address 73 * spaces. 74 * 75 * Assume these are all power of twos. 76 * When 0 use the default page size. 77 */ 78 #define MAP_HUGE_SHIFT 26 79 #define MAP_HUGE_MASK 0x3f 80 81 #endif /* __ALPHA_MMAN_H__ */ 82