diff options
| -rw-r--r-- | sys/arch/amd64/include/lock.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/arch/amd64/include/lock.h b/sys/arch/amd64/include/lock.h index 35b1974f910..57674ae58f7 100644 --- a/sys/arch/amd64/include/lock.h +++ b/sys/arch/amd64/include/lock.h @@ -1,4 +1,4 @@ -/* $OpenBSD: lock.h,v 1.1 2004/06/25 11:03:28 art Exp $ */ +/* $OpenBSD: lock.h,v 1.2 2007/05/25 20:48:33 art Exp $ */ /* $NetBSD: lock.h,v 1.1.2.2 2000/05/03 14:40:55 sommerfeld Exp $ */ /*- @@ -114,6 +114,8 @@ __cpu_simple_unlock(__cpu_simple_lock_t *lockp) *lockp = __SIMPLELOCK_UNLOCKED; } +#define rw_cas(p, o, n) (x86_atomic_cas_ul(p, o, n) != o) + #endif /* !LOCKDEBUG */ #endif /* _AMD64_LOCK_H_ */ |