93 lines
2.0 KiB
C
93 lines
2.0 KiB
C
/**
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* \file mman.h
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* License details are found in the file LICENSE.
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* \brief
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* memory management declarations
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* \author Gou Nakamura <go.nakamura.yw@hitachi-solutions.com> \par
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* Copyright (C) 2013 Hitachi, Ltd.
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* \author Gou Nakamura <go.nakamura.yw@hitachi-solutions.com> \par
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* Copyright (C) 2015 RIKEN AICS
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*/
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/*
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* HISTORY:
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*/
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#ifndef HEADER_MMAN_H
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#define HEADER_MMAN_H
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#include <arch/mman.h>
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/*
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* memory protection
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*/
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#define PROT_NONE 0
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#define PROT_READ 0x01
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#define PROT_WRITE 0x02
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#define PROT_EXEC 0x04
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/* for mprotect */
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#define PROT_GROWSDOWN 0x01000000
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#define PROT_GROWSUP 0x02000000
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/*
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* mapping flags
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*/
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#define MAP_SHARED 0x01
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#define MAP_PRIVATE 0x02
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#define MAP_FIXED 0x10
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#define MAP_ANONYMOUS 0x20
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/*
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* memory advice
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*/
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#define MADV_NORMAL 0
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#define MADV_RANDOM 1
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#define MADV_SEQUENTIAL 2
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#define MADV_WILLNEED 3
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#define MADV_DONTNEED 4
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#define MADV_REMOVE 9
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#define MADV_DONTFORK 10
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#define MADV_DOFORK 11
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#define MADV_MERGEABLE 12
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#define MADV_UNMERGEABLE 13
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#define MADV_HUGEPAGE 14
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#define MADV_NOHUGEPAGE 15
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#define MADV_DONTDUMP 16
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#define MADV_DODUMP 17
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#define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */
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#define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */
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#define MADV_HWPOISON 100
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#define MADV_SOFT_OFFLINE 101
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/*
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* for mremap()
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*/
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#define MREMAP_MAYMOVE 0x01
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#define MREMAP_FIXED 0x02
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/*
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* for msync()
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*/
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#define MS_ASYNC 0x01
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#define MS_INVALIDATE 0x02
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#define MS_SYNC 0x04
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/* include/uapi/linux/mman.h */
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#define OVERCOMMIT_GUESS 0
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#define OVERCOMMIT_ALWAYS 1
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#define OVERCOMMIT_NEVER 2
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extern int sysctl_overcommit_memory;
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/*
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* This looks more complex than it should be. But we need to
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* get the type for the ~ right in round_down (it needs to be
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* as wide as the result!), and we want to evaluate the macro
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* arguments just once each.
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*/
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#define __round_mask(x, y) ((__typeof__(x))((y)-1))
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#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
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#define round_down(x, y) ((x) & ~__round_mask(x, y))
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#endif /* HEADER_MMAN_H */
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