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| author | Dominik Vogt <vogt@linux.vnet.ibm.com> | 2014-05-09 16:58:46 +0200 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@linux.vnet.ibm.com> | 2014-05-09 16:58:46 +0200 |
| commit | 5a414ff70c3a45e52b5f5c0741bd459a84cf56b8 (patch) | |
| tree | 036ad6a707ea587149cb057f3e41b7bdd086cbdd /configure | |
| parent | f63c86fed0ddf38f53de486c5ec537455c00bd52 (diff) | |
| download | glibc-5a414ff70c3a45e52b5f5c0741bd459a84cf56b8.tar.gz glibc-5a414ff70c3a45e52b5f5c0741bd459a84cf56b8.tar.xz glibc-5a414ff70c3a45e52b5f5c0741bd459a84cf56b8.zip | |
S/390: Port of lock elision to System/z
Added support for TX lock elision of pthread mutexes on s390 and s390x. This may improve lock scaling of existing programs on TX capable systems. The lock elision code is only built with --enable-lock-elision=yes and then requires a GCC version supporting the TX builtins. With lock elision default mutexes are elided via __builtin_tbegin, if the cpu supports transactions. By default lock elision is not enabled and the elision code is not built.
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/configure b/configure index 8b0b22241d..ecc282bd2e 100755 --- a/configure +++ b/configure @@ -651,6 +651,7 @@ libc_cv_nss_crypt all_warnings force_install bindnow +enable_lock_elision hardcoded_path_in_tests oldest_abi use_default_link @@ -3476,6 +3477,7 @@ else enable_lock_elision=no fi + if test "$enable_lock_elision" = yes ; then $as_echo "#define ENABLE_LOCK_ELISION 1" >>confdefs.h |