From 1717da59aed9612becd56aaa1249aac695af4c8a Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 16 May 2013 19:17:14 -0700 Subject: Add a configure option to enable lock elision and disable by default Can be enabled with --enable-lock-elision=yes at configure time. --- configure.in | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'configure.in') diff --git a/configure.in b/configure.in index cc065dbfab..cf118f8ffa 100644 --- a/configure.in +++ b/configure.in @@ -184,6 +184,15 @@ if test "$enable_stackguard_randomize" = yes; then AC_DEFINE(ENABLE_STACKGUARD_RANDOMIZE) fi +AC_ARG_ENABLE([lock-elision], + AC_HELP_STRING([--enable-lock-elision[=yes/no]], + [Enable lock elision for pthread mutexes and rwlocks by default]), + [enable_lock_elision=$enableval], + [enable_lock_elision=no]) +if test "$enable_lock_elision" = yes ; then + AC_DEFINE(ENABLE_LOCK_ELISION) +fi + dnl Generic infrastructure for drop-in additions to libc. AC_ARG_ENABLE([add-ons], AC_HELP_STRING([--enable-add-ons@<:@=DIRS...@:>@], -- cgit 1.4.1