From: paulmck@kernel.org
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com,
mingo@kernel.org, jiangshanlai@gmail.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,
fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org,
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
"Paul E . McKenney" <paulmck@kernel.org>
Subject: [PATCH tip/core/rcu 08/10] docs: RCU: Don't duplicate chapter names in rculist_nulls.rst
Date: Mon, 22 Jun 2020 17:09:45 -0700 [thread overview]
Message-ID: <20200623000947.25222-8-paulmck@kernel.org> (raw)
In-Reply-To: <20200623000923.GA25047@paulmck-ThinkPad-P72>
From: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Since changeset 58ad30cf91f0 ("docs: fix reference to core-api/namespaces.rst"),
auto-references for chapters are generated. This is a nice feature, but
has a drawback: no chapters can have the same sumber.
So, we need to add two higher hierarchy chapters on this document,
in order to avoid such duplication.
Fixes: 58ad30cf91f0 ("docs: fix reference to core-api/namespaces.rst")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
Documentation/RCU/rculist_nulls.rst | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/RCU/rculist_nulls.rst b/Documentation/RCU/rculist_nulls.rst
index d403742..a9fc774 100644
--- a/Documentation/RCU/rculist_nulls.rst
+++ b/Documentation/RCU/rculist_nulls.rst
@@ -10,6 +10,9 @@ objects using SLAB_TYPESAFE_BY_RCU allocations.
Please read the basics in Documentation/RCU/listRCU.rst
+Using 'nulls'
+=============
+
Using special makers (called 'nulls') is a convenient way
to solve following problem :
@@ -126,6 +129,9 @@ very very fast (before the end of RCU grace period)
--------------------------------------------------------------------------
+Avoiding extra smp_rmb()
+========================
+
With hlist_nulls we can avoid extra smp_rmb() in lockless_lookup()
and extra smp_wmb() in insert function.
--
2.9.5
next prev parent reply other threads:[~2020-06-23 0:10 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-23 0:09 [PATCH tip/core/rcu 0/10] Documentation updates for v5.9 Paul E. McKenney
2020-06-23 0:09 ` [PATCH tip/core/rcu 01/10] docs: RCU: Convert checklist.txt to ReST paulmck
2020-06-23 0:09 ` [PATCH tip/core/rcu 02/10] docs: RCU: Convert lockdep-splat.txt " paulmck
2020-06-23 0:09 ` [PATCH tip/core/rcu 03/10] docs: RCU: Convert lockdep.txt " paulmck
2020-06-23 0:09 ` [PATCH tip/core/rcu 04/10] docs: RCU: Convert rculist_nulls.txt " paulmck
2020-06-23 0:09 ` [PATCH tip/core/rcu 05/10] docs: RCU: Convert torture.txt " paulmck
2020-06-23 0:09 ` [PATCH tip/core/rcu 06/10] docs: RCU: Convert rcuref.txt " paulmck
2020-06-23 0:09 ` [PATCH tip/core/rcu 07/10] docs: RCU: Convert stallwarn.txt " paulmck
2020-06-23 0:09 ` paulmck [this message]
2020-06-23 0:09 ` [PATCH tip/core/rcu 09/10] doc: Timer problems can cause RCU CPU stall warnings paulmck
2020-06-23 0:09 ` [PATCH tip/core/rcu 10/10] doc: Tasks RCU must protect instructions before trampoline paulmck
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