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authorJoseph Myers <joseph@codesourcery.com>2018-02-06 00:36:14 +0000
committerJoseph Myers <joseph@codesourcery.com>2018-02-06 00:36:14 +0000
commite76def72eb74ddc4fcf2b1630f5da742ddbd811d (patch)
treeac9ad86990781947978f36451edc6b653a05bf75 /sysdeps/unix/sysv/linux/microblaze/bits
parent92669d6ee3f25b3ca4cb227d194900489f895432 (diff)
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Add MAP_SYNC from Linux 4.15.
This patch adds the MAP_SYNC macro from Linux 4.15 to various
bits/mman.h headers.  Note that this is *not* added to all
architectures: in Linux 4.15, this macro is only in
asm-generic/mman.h, and only some architectures' asm/mman.h include
the asm-generic file - the architectures not using the asm-generic
file will need their own values of MAP_SYNC allocated to support this
functionality (some of them also already have conflicting mmap flags
so the value there will have to be different from the generic
0x80000).  Specifically, for glibc architectures, alpha hppa mips
powerpc sparc tile lack allocations of values for MAP_SYNC.

Tested for x86_64.

	* sysdeps/unix/sysv/linux/aarch64/bits/mman.h [__USE_MISC]
	(MAP_SYNC): New macro.
	* sysdeps/unix/sysv/linux/arm/bits/mman.h [__USE_MISC] (MAP_SYNC):
	Likewise.
	* sysdeps/unix/sysv/linux/ia64/bits/mman.h [__USE_MISC]
	(MAP_SYNC): Likewise.
	* sysdeps/unix/sysv/linux/m68k/bits/mman.h [__USE_MISC]
	(MAP_SYNC): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/bits/mman.h [__USE_MISC]
	(MAP_SYNC): Likewise.
	* sysdeps/unix/sysv/linux/nios2/bits/mman.h [__USE_MISC]
	(MAP_SYNC): Likewise.
	* sysdeps/unix/sysv/linux/riscv/bits/mman.h [__USE_MISC]
	(MAP_SYNC): Likewise.
	* sysdeps/unix/sysv/linux/s390/bits/mman.h [__USE_MISC]
	(MAP_SYNC): Likewise.
	* sysdeps/unix/sysv/linux/sh/bits/mman.h [__USE_MISC] (MAP_SYNC):
	Likewise.
	* sysdeps/unix/sysv/linux/x86/bits/mman.h [__USE_MISC] (MAP_SYNC):
	Likewise.
Diffstat (limited to 'sysdeps/unix/sysv/linux/microblaze/bits')
-rw-r--r--sysdeps/unix/sysv/linux/microblaze/bits/mman.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/microblaze/bits/mman.h b/sysdeps/unix/sysv/linux/microblaze/bits/mman.h
index b820da1b92..8ca77b6b8f 100644
--- a/sysdeps/unix/sysv/linux/microblaze/bits/mman.h
+++ b/sysdeps/unix/sysv/linux/microblaze/bits/mman.h
@@ -36,6 +36,8 @@
 # define MAP_NONBLOCK       0x10000     /* Do not block on IO.  */
 # define MAP_STACK          0x20000     /* Allocation is for a stack.  */
 # define MAP_HUGETLB        0x40000     /* Create huge page mapping.  */
+# define MAP_SYNC           0x80000	/* Perform synchronous page
+					   faults for the mapping.  */
 #endif
 
 /* Include generic Linux declarations.  */