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Add MADV_WIPEONFORK, MADV_KEEPONFORK from Linux 4.14. 

This patch adds the new MADV_WIPEONFORK and MADV_KEEPONFORK from Linux
4.14 to bits/mman-linux.h (and bits/mman.h in the hppa case).  Note
there are further hppa MADV_* changes in 4.14; I plan a separate glibc
patch for those.

Tested for x86_64.

	* sysdeps/unix/sysv/linux/bits/mman-linux.h
	[__USE_MISC] (MADV_WIPEONFORK): New macro.
	[__USE_MISC] (MADV_KEEPONFORK): Likewise.
	* sysdeps/unix/sysv/linux/hppa/bits/mman.h
	[__USE_MISC] (MADV_WIPEONFORK): Likewise.
	[__USE_MISC] (MADV_KEEPONFORK): Likewise.
This commit is contained in:
Joseph Myers 2017-11-15 18:40:29 +00:00
parent 1ba1d8a44d
commit fa680dc614
3 changed files with 13 additions and 0 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2017-11-15 Joseph Myers <joseph@codesourcery.com>
* sysdeps/unix/sysv/linux/bits/mman-linux.h
[__USE_MISC] (MADV_WIPEONFORK): New macro.
[__USE_MISC] (MADV_KEEPONFORK): Likewise.
* sysdeps/unix/sysv/linux/hppa/bits/mman.h
[__USE_MISC] (MADV_WIPEONFORK): Likewise.
[__USE_MISC] (MADV_KEEPONFORK): Likewise.
2017-11-15 Adhemerval Zanella <adhemerval.zanella@linaro.org>
* signal/sigrelse.c (sigrelse): Optimize implementation.

2
sysdeps/unix/sysv/linux/bits/mman-linux.h
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@ -89,6 +89,8 @@
# define MADV_DONTDUMP 16 /* Explicity exclude from the core dump,
overrides the coredump filter bits. */
# define MADV_DODUMP 17 /* Clear the MADV_DONTDUMP flag. */
# define MADV_WIPEONFORK 18 /* Zero memory on fork, child only. */
# define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK. */
# define MADV_HWPOISON 100 /* Poison a page for testing. */
#endif

2
sysdeps/unix/sysv/linux/hppa/bits/mman.h
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@ -99,6 +99,8 @@
# define MADV_DONTDUMP 69 /* Explicity exclude from the core dump,
overrides the coredump filter bits */
# define MADV_DODUMP 70 /* Clear the MADV_NODUMP flag */
# define MADV_WIPEONFORK 71 /* Zero memory on fork, child only. */
# define MADV_KEEPONFORK 72 /* Undo MADV_WIPEONFORK. */
#endif
/* The POSIX people had to invent similar names for the same things. */