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 8/9] Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE() in tree_trace.c
Date: Mon, 16 Mar 2015 11:42:23 -0700 [thread overview]
Message-ID: <1426531344-24822-8-git-send-email-paulmck@linux.vnet.ibm.com> (raw)
In-Reply-To: <1426531344-24822-1-git-send-email-paulmck@linux.vnet.ibm.com>
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
This commit moves kernel/rcu/tree_trace.c 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>
---
kernel/rcu/tree_trace.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/rcu/tree_trace.c b/kernel/rcu/tree_trace.c
index f92361efd0f5..3ea7ffc7d5c4 100644
--- a/kernel/rcu/tree_trace.c
+++ b/kernel/rcu/tree_trace.c
@@ -277,7 +277,7 @@ static void print_one_rcu_state(struct seq_file *m, struct rcu_state *rsp)
seq_printf(m, "nfqs=%lu/nfqsng=%lu(%lu) fqlh=%lu oqlen=%ld/%ld\n",
rsp->n_force_qs, rsp->n_force_qs_ngp,
rsp->n_force_qs - rsp->n_force_qs_ngp,
- ACCESS_ONCE(rsp->n_force_qs_lh), rsp->qlen_lazy, rsp->qlen);
+ READ_ONCE(rsp->n_force_qs_lh), rsp->qlen_lazy, rsp->qlen);
for (rnp = &rsp->node[0]; rnp - &rsp->node[0] < rcu_num_nodes; rnp++) {
if (rnp->level != level) {
seq_puts(m, "\n");
@@ -323,8 +323,8 @@ static void show_one_rcugp(struct seq_file *m, struct rcu_state *rsp)
struct rcu_node *rnp = &rsp->node[0];
raw_spin_lock_irqsave(&rnp->lock, flags);
- completed = ACCESS_ONCE(rsp->completed);
- gpnum = ACCESS_ONCE(rsp->gpnum);
+ completed = READ_ONCE(rsp->completed);
+ gpnum = READ_ONCE(rsp->gpnum);
if (completed == gpnum)
gpage = 0;
else
--
1.8.1.5
next prev parent reply other threads:[~2015-03-16 18:43 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 ` [PATCH v2 tip/core/rcu 1/9] Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE() in rculist.h Paul E. McKenney
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 ` Paul E. McKenney [this message]
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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