diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2018-05-17 20:28:33 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2018-05-17 20:28:33 +0000 |
| commit | 47cc8afdebdc9f52832f2c09fd79c371f6486d7c (patch) | |
| tree | 15d1686ccb5b8a4df159af7964c8a19724dcbec0 /lib/libc/arch | |
| parent | 641bee903b7ac7f39242ddf95ec1d453670c1840 (diff) | |
Drop memory barrier in _atomic_lock() implementation since the callers now
take care of this.
ok visa@, mpi@
Diffstat (limited to 'lib/libc/arch')
| -rw-r--r-- | lib/libc/arch/aarch64/gen/_atomic_lock.c | 3 | ||||
| -rw-r--r-- | lib/libc/arch/arm/gen/_atomic_lock.c | 3 |
2 files changed, 2 insertions, 4 deletions
diff --git a/lib/libc/arch/aarch64/gen/_atomic_lock.c b/lib/libc/arch/aarch64/gen/_atomic_lock.c index f4b0ad30508..837d38d9e6a 100644 --- a/lib/libc/arch/aarch64/gen/_atomic_lock.c +++ b/lib/libc/arch/aarch64/gen/_atomic_lock.c @@ -1,4 +1,4 @@ -/* $OpenBSD: _atomic_lock.c,v 1.1 2017/08/15 06:16:37 guenther Exp $ */ +/* $OpenBSD: _atomic_lock.c,v 1.2 2018/05/17 20:28:32 kettenis Exp $ */ /* * Copyright (c) 2004 Dale Rahn. All rights reserved. @@ -41,7 +41,6 @@ _atomic_lock(volatile _atomic_lock_t *lock) " stlxr %w2, %w3, [%x1] \n" " cmp %w2, #0 \n" " bne 1b \n" - " dmb sy \n" : "+r" (old), "+r" (lock), "+r" (scratch) : "r" (_ATOMIC_LOCK_LOCKED)); diff --git a/lib/libc/arch/arm/gen/_atomic_lock.c b/lib/libc/arch/arm/gen/_atomic_lock.c index f93aae59ad3..3a392cf5ad6 100644 --- a/lib/libc/arch/arm/gen/_atomic_lock.c +++ b/lib/libc/arch/arm/gen/_atomic_lock.c @@ -1,4 +1,4 @@ -/* $OpenBSD: _atomic_lock.c,v 1.1 2017/08/15 06:13:24 guenther Exp $ */ +/* $OpenBSD: _atomic_lock.c,v 1.2 2018/05/17 20:28:32 kettenis Exp $ */ /* * Copyright (c) 2004 Dale Rahn. All rights reserved. @@ -41,7 +41,6 @@ _atomic_lock(volatile _atomic_lock_t *lock) " strex %2, %3, [%1] \n" " cmp %2, #0 \n" " bne 1b \n" - " dmb sy \n" : "+r" (old), "+r" (lock), "+r" (scratch) : "r" (_ATOMIC_LOCK_LOCKED)); |