Rogerio Alves 07ed18d26a Add elision tunables ... This patch adds several new tunables to control the behavior of elision on supported platforms[1]. Since elision now depends on tunables, we should always *compile* with elision enabled, and leave the code disabled, but available for runtime selection. This gives us *much* better compile-time testing of the existing code to avoid bit-rot[2]. Tested on ppc, ppc64, ppc64le, s390x and x86_64. [1] This part of the patch was initially proposed by Paul Murphy but was "staled" because the framework have changed since the patch was originally proposed: https://patchwork.sourceware.org/patch/10342/ [2] This part of the patch was inititally proposed as a RFC by Carlos O'Donnell. Make sense to me integrate this on the patch: https://sourceware.org/ml/libc-alpha/2017-05/msg00335.html * elf/dl-tunables.list: Add elision parameters. * manual/tunables.texi: Add entries about elision tunable. * sysdeps/unix/sysv/linux/powerpc/elision-conf.c: Add callback functions to dynamically enable/disable elision. Add multiple callbacks functions to set elision parameters. Deleted __libc_enable_secure check. * sysdeps/unix/sysv/linux/s390/elision-conf.c: Likewise. * sysdeps/unix/sysv/linux/x86/elision-conf.c: Likewise. * configure: Regenerated. * configure.ac: Option enable_lock_elision was deleted. * config.h.in: ENABLE_LOCK_ELISION flag was deleted. * config.make.in: Remove references to enable_lock_elision. * manual/install.texi: Elision configure option was removed. * INSTALL: Regenerated to remove enable_lock_elision. * nptl/Makefile: Disable elision so it can verify error case for destroying a mutex. * sysdeps/powerpc/nptl/elide.h: Cleanup ENABLE_LOCK_ELISION check. Deleted macros for the case when ENABLE_LOCK_ELISION was not defined. * sysdeps/s390/configure: Regenerated. * sysdeps/s390/configure.ac: Remove references to enable_lock_elision.. * nptl/tst-mutex8.c: Deleted all #ifndef ENABLE_LOCK_ELISION from the test. * sysdeps/powerpc/powerpc32/sysdep.h: Deleted all ENABLE_LOCK_ELISION checks. * sysdeps/powerpc/powerpc64/sysdep.h: Likewise. * sysdeps/powerpc/sysdep.h: Likewise. * sysdeps/s390/nptl/bits/pthreadtypes-arch.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/force-elision.h: Likewise. * sysdeps/unix/sysv/linux/s390/elision-conf.h: Likewise. * sysdeps/unix/sysv/linux/s390/force-elision.h: Likewise. * sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise. * sysdeps/unix/sysv/linux/s390/Makefile: Remove references to enable-lock-elision. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>		2017-12-05 17:48:48 -02:00
..
alpha
arm
bsd	Hide internal __tcgetattr function [BZ #18822]	2017-10-01 17:48:24 -07:00
i386
inet	Remove add-ons mechanism.	2017-10-05 15:58:13 +00:00
mips
powerpc
sh
sysv/linux	Add elision tunables	2017-12-05 17:48:48 -02:00
x86_64
clock_gettime.c	hurd: Fix exposition of s/gettimeofday through timespec_s/get	2017-09-25 01:55:02 +02:00
clock_nanosleep.c
clock_settime.c	hurd: Fix exposition of s/gettimeofday through timespec_s/get	2017-09-25 01:55:02 +02:00
confstr.h
get_child_max.c
getlogin_r.c	Avoid use of strlen in getlogin_r (bug 22447).	2017-11-22 18:44:23 +00:00
getlogin.c
getpagesize.c
grantpt.c
ifreq.c
Implies
make-syscalls.sh	Fix make-syscalls.sh VDSO support for GCC 8.	2017-09-26 21:21:01 +00:00
Makefile
s-proto-cancel.S
s-proto.S
setxid.h
sockatmark.c
stime.c
syscall-template.S	Remove cancellation support for syscall generation	2017-08-24 14:58:35 -03:00
syscall.S
syscalls.list	posix: Consolidate Linux fsync syscall	2017-05-18 18:06:47 -03:00
sysdep.h