powerpc: Add adaptive elision to rwlocks

[platform/upstream/glibc.git] / ChangeLog

diff --git a/ChangeLog b/ChangeLog
index 829c7ec..6737953 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,16 @@
 2014-01-12  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>
 
+       * sysdeps/powerpc/nptl/elide.h: New file: generic lock elision support
+       for powerpc.
+       * sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h
+       [pthread_rwlock_t] (__pad1): Change size to 7 bytes in 64 bits case
+       and remove it for 32 bits case.
+       [pthread_rwlock_t] (__rwelision): New field for lock elision.
+       (__PTHREAD_RWLOCK_ELISION_EXTRA): Adjust for new lock elision field
+       initialization.
+       * sysdeps/unix/sysv/linux/powerpc/elision-conf.c (elision_init):
+       Disable lock elision with rdlocks if elision is not available.
+
        * sysdeps/unix/sysv/linux/powerpc/Makefile [nptl]
        (sysdep_routines): Add lock elision objects.
        * sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h