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| author | Jakub Jelinek <jakub@redhat.com> | 2009-07-16 07:24:50 -0700 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2009-07-16 07:24:50 -0700 |
| commit | bea0ac1d8703091294fe5822d982591c849b5458 (patch) | |
| tree | 1d7b20d187c218c9113de06d9c295ed9039f18af /ChangeLog | |
| parent | 55c4ce6885b577e2b29a4de674d4062a6882afe8 (diff) | |
| download | glibc-bea0ac1d8703091294fe5822d982591c849b5458.tar.gz glibc-bea0ac1d8703091294fe5822d982591c849b5458.tar.xz glibc-bea0ac1d8703091294fe5822d982591c849b5458.zip | |
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.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 48b5d029f3..1e9df428c7 100644 --- a/ChangeLog +++ b/ChangeLog @@ -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. + 2009-07-16 Ulrich Drepper <drepper@redhat.com> * sysdeps/generic/ldsodefs.h: Add prototype for |