diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2009-07-16 07:24:50 -0700 |
|---|---|---|
| committer | Petr Baudis <pasky@suse.cz> | 2009-07-16 20:35:37 +0200 |
| commit | e875bad50a2247e6297c1b2306d87b3eb623a0be (patch) | |
| tree | 903735fafe9037f8fd7f94b3a95b87224be29809 /ChangeLog | |
| parent | a5cceee5d55a69d82322b6ee0d17176a14b3b6bb (diff) | |
Use rel semantics of cas instead of acq semantics with full barrier before it in _int_free
The following patch fixes catomic_compare_and_exchange_*_rel definitions
(which were never used and weren't correct) and uses
catomic_compare_and_exchange_val_rel in _int_free. Comparing to the
pre-2009-07-02 --enable-experimental-malloc state the generated code should
be identical on all arches other than ppc/ppc64 and on ppc/ppc64 should use
lwsync instead of isync barrier.
(cherry picked from commit bea0ac1d8703091294fe5822d982591c849b5458)
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 13 |
1 files changed, 13 insertions, 0 deletions
@@ -1,3 +1,16 @@ +2009-07-13 Jakub Jelinek <jakub@redhat.com> + + * include/atomic.h (catomic_compare_and_exchange_val_rel): If arch + overrides atomic_compare_and_exchange_val_rel, define to + atomic_compare_and_exchange_val_rel by default, otherwise default + to catomic_compare_and_exchange_val_acq. + (catomic_compare_and_exchange_bool_rel): If arch overrides + atomic_compare_and_exchange_bool_rel, define to + atomic_compare_and_exchange_bool_rel by default. + * malloc/malloc.c (_int_free): Revert 2009-07-02 change. + Use catomic_compare_and_exchange_val_rel instead of + catomic_compare_and_exchange_val_acq. + 2009-07-07 H.J. Lu <hongjiu.lu@intel.com> * elf/Makefile: Don't build modules for tst-audit3 for anything |