From: "Joel Fernandes (Google)" <joel@joelfernandes.org>
To: linux-kernel@vger.kernel.org
Cc: "Joel Fernandes (Google)" <joel@joelfernandes.org>,
Jonathan Corbet <corbet@lwn.net>,
Josh Triplett <josh@joshtriplett.org>,
Lai Jiangshan <jiangshanlai@gmail.com>,
linux-doc@vger.kernel.org,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
"Paul E. McKenney" <paulmck@linux.ibm.com>,
Steven Rostedt <rostedt@goodmis.org>,
pantin@google.com
Subject: [PATCH RFC 5/5] doc: rcu: Encourage use of rcu_barrier in checklist
Date: Fri, 5 Oct 2018 16:18:14 -0700 [thread overview]
Message-ID: <20181005231815.170433-6-joel@joelfernandes.org> (raw)
In-Reply-To: <20181005231815.170433-1-joel@joelfernandes.org>
The checklist suggests rcu_barrier_bh for RCU-bh and similarly for
sched, however these APIs are now implemented as rcu_barrier itself due
to the RCU consolidation. It may also be removed in the future, so lets
correct the doc to encourage use of the rcu_barrier() API itself.
Similar changes are made in previous patches.
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
Documentation/RCU/checklist.txt | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation/RCU/checklist.txt b/Documentation/RCU/checklist.txt
index b90ad1b0665a..6f469864d9f5 100644
--- a/Documentation/RCU/checklist.txt
+++ b/Documentation/RCU/checklist.txt
@@ -442,8 +442,8 @@ over a rather long period of time, but improvements are always welcome!
You instead need to use one of the barrier functions:
o call_rcu() -> rcu_barrier()
- o call_rcu_bh() -> rcu_barrier_bh()
- o call_rcu_sched() -> rcu_barrier_sched()
+ o call_rcu_bh() -> rcu_barrier()
+ o call_rcu_sched() -> rcu_barrier()
o call_srcu() -> srcu_barrier()
However, these barrier functions are absolutely -not- guaranteed
--
2.19.0.605.g01d371f741-goog
next prev parent reply other threads:[~2018-10-05 23:18 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-05 23:18 [PATCH RFC 0/5] rcu doc updates for whatisRCU and checklist Joel Fernandes (Google)
2018-10-05 23:18 ` [PATCH RFC 1/5] doc: rcu: Update core and full API in whatisRCU Joel Fernandes (Google)
2018-10-05 23:18 ` [PATCH RFC 2/5] doc: rcu: Add more rationale for using rcu_read_lock_sched in checklist Joel Fernandes (Google)
2018-10-05 23:18 ` [PATCH RFC 3/5] doc: rcu: Remove obsolete suggestion from checklist Joel Fernandes (Google)
2018-10-05 23:18 ` [PATCH RFC 4/5] doc: rcu: Remove obsolete checklist item about synchronize_rcu usage Joel Fernandes (Google)
2018-10-05 23:18 ` Joel Fernandes (Google) [this message]
2018-10-05 23:46 ` [PATCH RFC 0/5] rcu doc updates for whatisRCU and checklist Theodore Y. Ts'o
2018-10-06 1:59 ` Joel Fernandes
2018-10-06 3:45 ` Paul E. McKenney
2018-10-06 4:40 ` Joel Fernandes
2018-10-06 22:47 ` Theodore Y. Ts'o
2018-10-06 4:50 ` Joel Fernandes
2018-10-06 5:34 ` Theodore Y. Ts'o
2018-10-06 16:49 ` Paul E. McKenney
2018-10-06 0:13 ` Paul E. McKenney
2018-10-06 2:10 ` Joel Fernandes
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