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| author | Andi Kleen <ak@linux.intel.com> | 2013-05-16 19:17:14 -0700 |
|---|---|---|
| committer | Andi Kleen <ak@linux.intel.com> | 2013-07-02 08:46:55 -0700 |
| commit | 1717da59aed9612becd56aaa1249aac695af4c8a (patch) | |
| tree | 0b69e8ee62804482fd7bd951c918abdd9d15c0a3 /nptl | |
| parent | 49186d21ef2d87986bccaf0a7c45c48c91b265f3 (diff) | |
| download | glibc-1717da59aed9612becd56aaa1249aac695af4c8a.tar.gz glibc-1717da59aed9612becd56aaa1249aac695af4c8a.tar.xz glibc-1717da59aed9612becd56aaa1249aac695af4c8a.zip | |
Add a configure option to enable lock elision and disable by default
Can be enabled with --enable-lock-elision=yes at configure time.
Diffstat (limited to 'nptl')
| -rw-r--r-- | nptl/ChangeLog | 5 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86/elision-conf.c | 3 |
2 files changed, 8 insertions, 0 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog index d32046ee65..46cf30849f 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,3 +1,8 @@ +2013-07-02 Andi Kleen <ak@linux.intel.com> + + * sysdeps/unix/sysv/linux/x86/elision-conf.c (elision_init): + Check ENABLE_LOCK_ELISION. + 2013-07-02 Andi Kleen <ak@linux.intel.com> * pthread_mutexattr_settype.c (__pthread_mutexattr_settype): diff --git a/nptl/sysdeps/unix/sysv/linux/x86/elision-conf.c b/nptl/sysdeps/unix/sysv/linux/x86/elision-conf.c index 6277e48d76..118cfa72f5 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86/elision-conf.c +++ b/nptl/sysdeps/unix/sysv/linux/x86/elision-conf.c @@ -16,6 +16,7 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ +#include "config.h" #include <pthreadP.h> #include <init-arch.h> #include <elision-conf.h> @@ -70,8 +71,10 @@ elision_init (int argc __attribute__ ((unused)), char **environ) { __elision_available = HAS_RTM; +#ifdef ENABLE_LOCK_ELISION __pthread_force_elision = __libc_enable_secure ? 0 : __elision_available; __rwlock_rtm_enabled = __libc_enable_secure ? 0 : __elision_available; +#endif } #ifdef SHARED |