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| author | Ulrich Drepper <drepper@redhat.com> | 2000-08-03 17:59:17 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2000-08-03 17:59:17 +0000 |
| commit | 0d019734966f91c3511933d207802631a7774def (patch) | |
| tree | b71b971c00e1f87717eac7ad964c69ecb3f46919 | |
| parent | 139a4d957a49107e0528e60913f3eb565c691da3 (diff) | |
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Update.
2000-07-27 Jes Sorensen <jes@linuxcare.com>
* linuxthreads/sysdeps/ia64/pspinlock.c (__pthread_spin_lock): Add
load of spin lock to prime the cache before the atomic compare and
exchange operation (cmpxchg4). This avoids the spinning on the
cmpxchg4 instruction and reduces movement of the cache line back
and forth between the processors (explanation by Asis K. Mallick
from Intel). This basically makes the implementation operate the
same as the Linux kernel implementation.
* linuxthreads/shlib-versions: Use GLIBC_2_2 for Linux/ia64.
* linuxthreads/sysdeps/ia64/pspinlock.c: New file.
| -rw-r--r-- | linuxthreads/ChangeLog | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog index e80114f174..0335aa7e56 100644 --- a/linuxthreads/ChangeLog +++ b/linuxthreads/ChangeLog @@ -1,3 +1,16 @@ +2000-07-27 Jes Sorensen <jes@linuxcare.com> + + * linuxthreads/sysdeps/ia64/pspinlock.c (__pthread_spin_lock): Add + load of spin lock to prime the cache before the atomic compare and + exchange operation (cmpxchg4). This avoids the spinning on the + cmpxchg4 instruction and reduces movement of the cache line back + and forth between the processors (explanation by Asis K. Mallick + from Intel). This basically makes the implementation operate the + same as the Linux kernel implementation. + + * linuxthreads/shlib-versions: Use GLIBC_2_2 for Linux/ia64. + * linuxthreads/sysdeps/ia64/pspinlock.c: New file. + 2000-08-03 Ulrich Drepper <drepper@redhat.com> * pthread.c: Move definition of __pthread_set_own_extricate_if... |