mman.h

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#ifndef __ALPHA_MMAN_H__
#define __ALPHA_MMAN_H__

#define PROT_READ   0x1     /* page can be read */
#define PROT_WRITE  0x2     /* page can be written */
#define PROT_EXEC   0x4     /* page can be executed */
#define PROT_SEM    0x8     /* page may be used for atomic ops */
#define PROT_NONE   0x0     /* page can not be accessed */
#define PROT_GROWSDOWN  0x01000000  /* mprotect flag: extend change to start of growsdown vma */
#define PROT_GROWSUP    0x02000000  /* mprotect flag: extend change to end of growsup vma */

#define MAP_SHARED  0x01        /* Share changes */
#define MAP_PRIVATE 0x02        /* Changes are private */
#define MAP_TYPE    0x0f        /* Mask for type of mapping (OSF/1 is _wrong_) */
#define MAP_FIXED   0x100       /* Interpret addr exactly */
#define MAP_ANONYMOUS   0x10        /* don't use a file */

/* not used by linux, but here to make sure we don't clash with OSF/1 defines */
#define _MAP_HASSEMAPHORE 0x0200
#define _MAP_INHERIT    0x0400
#define _MAP_UNALIGNED  0x0800

/* These are linux-specific */
#define MAP_GROWSDOWN   0x01000     /* stack-like segment */
#define MAP_DENYWRITE   0x02000     /* ETXTBSY */
#define MAP_EXECUTABLE  0x04000     /* mark it as an executable */
#define MAP_LOCKED  0x08000     /* lock the mapping */
#define MAP_NORESERVE   0x10000     /* don't check for reservations */
#define MAP_POPULATE    0x20000     /* populate (prefault) pagetables */
#define MAP_NONBLOCK    0x40000     /* do not block on IO */
#define MAP_STACK   0x80000     /* give out an address that is best suited for process/thread stacks */
#define MAP_HUGETLB 0x100000    /* create a huge page mapping */

#define MS_ASYNC    1       /* sync memory asynchronously */
#define MS_SYNC     2       /* synchronous memory sync */
#define MS_INVALIDATE   4       /* invalidate the caches */

#define MCL_CURRENT  8192       /* lock all currently mapped pages */
#define MCL_FUTURE  16384       /* lock all additions to address space */

#define MADV_NORMAL 0       /* no further special treatment */
#define MADV_RANDOM 1       /* expect random page references */
#define MADV_SEQUENTIAL 2       /* expect sequential page references */
#define MADV_WILLNEED   3       /* will need these pages */
#define MADV_SPACEAVAIL 5       /* ensure resources are available */
#define MADV_DONTNEED   6       /* don't need these pages */

/* common/generic parameters */
#define MADV_REMOVE 9       /* remove these pages & resources */
#define MADV_DONTFORK   10      /* don't inherit across fork */
#define MADV_DOFORK 11      /* do inherit across fork */

#define MADV_MERGEABLE   12     /* KSM may merge identical pages */
#define MADV_UNMERGEABLE 13     /* KSM may not merge identical pages */

#define MADV_HUGEPAGE   14      /* Worth backing with hugepages */
#define MADV_NOHUGEPAGE 15      /* Not worth backing with hugepages */

#define MADV_DONTDUMP   16      /* Explicity exclude from the core dump,
                       overrides the coredump filter bits */
#define MADV_DODUMP 17      /* Clear the MADV_NODUMP flag */

/* compatibility flags */
#define MAP_FILE    0

#endif /* __ALPHA_MMAN_H__ */