diff options
| author | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2014-11-07 12:30:56 -0500 |
|---|---|---|
| committer | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2015-01-12 06:30:54 -0500 |
| commit | 4b45943a6f62cfc239e79ad8902f5c7f71fd13ec (patch) | |
| tree | e297f0a960da29f470318e704890fbd52bf77fef /sysdeps/unix/sysv/linux/powerpc/elision-conf.c | |
| parent | 8d2c0a593bdefd220be0822fb70de6b8d3bfd39d (diff) | |
| download | glibc-4b45943a6f62cfc239e79ad8902f5c7f71fd13ec.tar.gz glibc-4b45943a6f62cfc239e79ad8902f5c7f71fd13ec.tar.xz glibc-4b45943a6f62cfc239e79ad8902f5c7f71fd13ec.zip | |
powerpc: Add adaptive elision to rwlocks
This patch adds support for lock elision using ISA 2.07 hardware transactional memory for rwlocks. The logic is similar to the one presented in pthread_mutex lock elision.
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/elision-conf.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/elision-conf.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-conf.c b/sysdeps/unix/sysv/linux/powerpc/elision-conf.c index 1d962e1d20..70fbbb2215 100644 --- a/sysdeps/unix/sysv/linux/powerpc/elision-conf.c +++ b/sysdeps/unix/sysv/linux/powerpc/elision-conf.c @@ -63,6 +63,9 @@ elision_init (int argc __attribute__ ((unused)), int elision_available = (GLRO (dl_hwcap2) & PPC_FEATURE2_HAS_HTM) ? 1 : 0; __pthread_force_elision = __libc_enable_secure ? 0 : elision_available; #endif + if (!__pthread_force_elision) + /* Disable elision on rwlocks. */ + __elision_aconf.try_tbegin = 0; } #ifdef SHARED |