From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@kernel.org, laijs@cn.fujitsu.com, dipankar@in.ibm.com,
akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
dvhart@linux.intel.com, fweisbec@gmail.com, oleg@redhat.com,
bobby.prani@gmail.com,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: [PATCH v2 tip/core/rcu 1/9] Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE() in rculist.h
Date: Mon, 16 Mar 2015 11:42:16 -0700 [thread overview]
Message-ID: <1426531344-24822-1-git-send-email-paulmck@linux.vnet.ibm.com> (raw)
In-Reply-To: <20150316184155.GA24290@linux.vnet.ibm.com>
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
This commit moves include/linux/rculist.h from the old ACCESS_ONCE()
API to the new READ_ONCE() and WRITE_ONCE() APIs.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
include/linux/rculist.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/linux/rculist.h b/include/linux/rculist.h
index a18b16f1dc0e..665397247e82 100644
--- a/include/linux/rculist.h
+++ b/include/linux/rculist.h
@@ -29,8 +29,8 @@
*/
static inline void INIT_LIST_HEAD_RCU(struct list_head *list)
{
- ACCESS_ONCE(list->next) = list;
- ACCESS_ONCE(list->prev) = list;
+ WRITE_ONCE(list->next, list);
+ WRITE_ONCE(list->prev, list);
}
/*
@@ -288,7 +288,7 @@ static inline void list_splice_init_rcu(struct list_head *list,
#define list_first_or_null_rcu(ptr, type, member) \
({ \
struct list_head *__ptr = (ptr); \
- struct list_head *__next = ACCESS_ONCE(__ptr->next); \
+ struct list_head *__next = READ_ONCE(__ptr->next); \
likely(__ptr != __next) ? list_entry_rcu(__next, type, member) : NULL; \
})
--
1.8.1.5
next prev parent reply other threads:[~2015-03-16 18:42 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-16 18:41 [PATCH tip/core/rcu 0/9] Stop using ACCESS_ONCE (for v4.2) Paul E. McKenney
2015-03-16 18:42 ` Paul E. McKenney [this message]
2015-03-16 18:42 ` [PATCH v2 tip/core/rcu 2/9] Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE() in rcupdate.h Paul E. McKenney
2015-03-16 18:42 ` [PATCH v2 tip/core/rcu 3/9] Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE() in rcutorture.c Paul E. McKenney
2015-03-16 18:42 ` [PATCH v2 tip/core/rcu 4/9] Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE() in srcu.c Paul E. McKenney
2015-03-16 18:42 ` [PATCH v2 tip/core/rcu 5/9] Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE() in tiny_plugin.h Paul E. McKenney
2015-03-16 18:42 ` [PATCH v2 tip/core/rcu 6/9] Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE() in tree.c Paul E. McKenney
2015-03-16 18:42 ` [PATCH v2 tip/core/rcu 7/9] Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE() in tree_plugin.h Paul E. McKenney
2015-03-16 18:42 ` [PATCH v2 tip/core/rcu 8/9] Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE() in tree_trace.c Paul E. McKenney
2015-03-16 18:42 ` [PATCH v2 tip/core/rcu 9/9] Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE() in update.c Paul E. McKenney
2015-03-23 14:49 ` [PATCH tip/core/rcu 0/9] Stop using ACCESS_ONCE (for v4.2) Steven Rostedt
2015-03-23 15:25 ` Paul E. McKenney
2015-03-23 15:34 ` Steven Rostedt
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