21f55b018b
For uapi, need try to let all macros have same value, and MADV_FREE is added into main branch recently, so need redefine MADV_FREE for it. At present, '8' can be shared with all architectures, so redefine it to '8'. [sudipm.mukherjee@gmail.com: correct uniform value of MADV_FREE] Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Minchan Kim <minchan@kernel.org> Acked-by: Hugh Dickins <hughd@google.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Roland Dreier <roland@kernel.org> Cc: Darrick J. Wong <darrick.wong@oracle.com> Cc: David S. Miller <davem@davemloft.net> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Shaohua Li <shli@kernel.org> Cc: <yalin.wang2010@gmail.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Daniel Micay <danielmicay@gmail.com> Cc: Jason Evans <je@fb.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Kirill A. Shutemov <kirill@shutemov.name> Cc: Mel Gorman <mgorman@suse.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mika Penttil <mika.penttila@nextfour.com> Cc: Rik van Riel <riel@redhat.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Shaohua Li <shli@kernel.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
76 lines
2.9 KiB
C
76 lines
2.9 KiB
C
#ifndef __ASM_GENERIC_MMAN_COMMON_H
|
|
#define __ASM_GENERIC_MMAN_COMMON_H
|
|
|
|
/*
|
|
Author: Michael S. Tsirkin <mst@mellanox.co.il>, Mellanox Technologies Ltd.
|
|
Based on: asm-xxx/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 */
|
|
#define MAP_FIXED 0x10 /* Interpret addr exactly */
|
|
#define MAP_ANONYMOUS 0x20 /* don't use a file */
|
|
#ifdef CONFIG_MMAP_ALLOW_UNINITIALIZED
|
|
# define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be uninitialized */
|
|
#else
|
|
# define MAP_UNINITIALIZED 0x0 /* Don't support this flag */
|
|
#endif
|
|
|
|
/*
|
|
* Flags for mlock
|
|
*/
|
|
#define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */
|
|
|
|
#define MS_ASYNC 1 /* sync memory asynchronously */
|
|
#define MS_INVALIDATE 2 /* invalidate the caches */
|
|
#define MS_SYNC 4 /* synchronous memory sync */
|
|
|
|
#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_DONTNEED 4 /* don't need these pages */
|
|
|
|
/* common parameters: try to keep these consistent across architectures */
|
|
#define MADV_FREE 8 /* free pages only if memory pressure */
|
|
#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_HWPOISON 100 /* poison a page for testing */
|
|
#define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */
|
|
|
|
#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_DONTDUMP flag */
|
|
|
|
/* compatibility flags */
|
|
#define MAP_FILE 0
|
|
|
|
/*
|
|
* When MAP_HUGETLB is set bits [26:31] encode the log2 of the huge page size.
|
|
* This gives us 6 bits, which is enough until someone invents 128 bit address
|
|
* spaces.
|
|
*
|
|
* Assume these are all power of twos.
|
|
* When 0 use the default page size.
|
|
*/
|
|
#define MAP_HUGE_SHIFT 26
|
|
#define MAP_HUGE_MASK 0x3f
|
|
|
|
#endif /* __ASM_GENERIC_MMAN_COMMON_H */
|