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-rw-r--r--nptl/ChangeLog5
-rw-r--r--nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h5
2 files changed, 9 insertions, 1 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index bbe26fafd1..cda72ea2bd 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,8 @@
+2003-09-22 Ulrich Drepper <drepper@redhat.com>
+
+ * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Don't play tricks
+ like jumping over the lock prefix.
+
2003-09-21 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Completely revamp the
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
index 35d132113d..900c9cd5b1 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
@@ -184,7 +184,10 @@ extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
2 - taken by more users */
-#if defined NOT_IN_libc || defined UP
+//#if defined NOT_IN_libc || defined UP
+/* According to AMD it is not necessary to play tricks with avoiding the
+ lock instruction. */
+#if 1
# define lll_trylock(futex) lll_mutex_trylock (futex)
# define lll_lock(futex) lll_mutex_lock (futex)
# define lll_unlock(futex) lll_mutex_unlock (futex)