X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Furcu-pointer.c;h=a42fe87be47c0feea1549ccc91ba9db685342538;hb=HEAD;hp=d0854ac8fb3ac1051b573b7afad890cf6f04cc2d;hpb=6cd23d474d3b7d3d090652d0d0b9508ab7d1f9f8;p=urcu.git

diff --git a/src/urcu-pointer.c b/src/urcu-pointer.c
index d0854ac..a42fe87 100644
--- a/src/urcu-pointer.c
+++ b/src/urcu-pointer.c
@@ -1,26 +1,11 @@
+// SPDX-FileCopyrightText: 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+// SPDX-FileCopyrightText: 2009 Paul E. McKenney, IBM Corporation.
+//
+// SPDX-License-Identifier: LGPL-2.1-or-later
 
 /*
- * urcu-pointer.c
- *
  * library wrappers to be used by non-LGPL compatible source code.
  *
- * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- * Copyright (c) 2009 Paul E. McKenney, IBM Corporation.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
  * IBM's contributions to this file may be relicensed under LGPLv2 or later.
  */
 
@@ -39,19 +24,16 @@ void *rcu_dereference_sym(void *p)
 
 void *rcu_set_pointer_sym(void **p, void *v)
 {
-	cmm_wmb();
-	uatomic_set(p, v);
+	uatomic_store(p, v, CMM_RELEASE);
 	return v;
 }
 
 void *rcu_xchg_pointer_sym(void **p, void *v)
 {
-	cmm_wmb();
-	return uatomic_xchg(p, v);
+	return uatomic_xchg_mo(p, v, CMM_SEQ_CST);
 }
 
 void *rcu_cmpxchg_pointer_sym(void **p, void *old, void *_new)
 {
-	cmm_wmb();
-	return uatomic_cmpxchg(p, old, _new);
+	return uatomic_cmpxchg_mo(p, old, _new, CMM_SEQ_CST, CMM_RELAXED);
 }