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From: Will Deacon <will@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Will Deacon <will@kernel.org>, Yunjae Lee <lyj7694@gmail.com>,
	SeongJae Park <sj38.park@gmail.com>,
	"Paul E. McKenney" <paulmck@kernel.org>,
	Josh Triplett <josh@joshtriplett.org>,
	Matt Turner <mattst88@gmail.com>,
	Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
	Richard Henderson <rth@twiddle.net>,
	Peter Zijlstra <peterz@infradead.org>,
	Alan Stern <stern@rowland.harvard.edu>,
	Michael Ellerman <mpe@ellerman.id.au>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Jason Wang <jasowang@redhat.com>, Arnd Bergmann <arnd@arndb.de>,
	Joe Perches <joe@perches.com>, Boqun Feng <boqun.feng@gmail.com>,
	linux-alpha@vger.kernel.org,
	virtualization@lists.linux-foundation.org
Subject: [PATCH 12/13] include/linux: Remove smp_read_barrier_depends() from comments
Date: Fri,  8 Nov 2019 17:01:19 +0000	[thread overview]
Message-ID: <20191108170120.22331-13-will@kernel.org> (raw)
In-Reply-To: <20191108170120.22331-1-will@kernel.org>

'smp_read_barrier_depends()' doesn't exist any more, so reword the two
comments that mention it to refer to "dependency ordering" instead.

Signed-off-by: Will Deacon <will@kernel.org>
---
 include/linux/percpu-refcount.h | 2 +-
 include/linux/ptr_ring.h        | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/percpu-refcount.h b/include/linux/percpu-refcount.h
index 7aef0abc194a..246760b93715 100644
--- a/include/linux/percpu-refcount.h
+++ b/include/linux/percpu-refcount.h
@@ -155,7 +155,7 @@ static inline bool __ref_is_percpu(struct percpu_ref *ref,
 	 * between contaminating the pointer value, meaning that
 	 * READ_ONCE() is required when fetching it.
 	 *
-	 * The smp_read_barrier_depends() implied by READ_ONCE() pairs
+	 * The dependency ordering from the READ_ONCE() pairs
 	 * with smp_store_release() in __percpu_ref_switch_to_percpu().
 	 */
 	percpu_ptr = READ_ONCE(ref->percpu_count_ptr);
diff --git a/include/linux/ptr_ring.h b/include/linux/ptr_ring.h
index 0abe9a4fc842..b6e94b60fc12 100644
--- a/include/linux/ptr_ring.h
+++ b/include/linux/ptr_ring.h
@@ -106,7 +106,7 @@ static inline int __ptr_ring_produce(struct ptr_ring *r, void *ptr)
 		return -ENOSPC;
 
 	/* Make sure the pointer we are storing points to a valid data. */
-	/* Pairs with smp_read_barrier_depends in __ptr_ring_consume. */
+	/* Pairs with the dependency ordering in __ptr_ring_consume. */
 	smp_wmb();
 
 	WRITE_ONCE(r->queue[r->producer++], ptr);
-- 
2.24.0.rc1.363.gb1bccd3e3d-goog


  parent reply	other threads:[~2019-11-08 17:01 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-08 17:01 [PATCH 00/13] Finish off [smp_]read_barrier_depends() Will Deacon
2019-11-08 17:01 ` [PATCH 01/13] compiler.h: Split {READ,WRITE}_ONCE definitions out into rwonce.h Will Deacon
2019-11-08 19:57   ` [PATCH 01/13] compiler.h: Split {READ, WRITE}_ONCE " Arnd Bergmann
2019-11-08 19:57   ` [PATCH 01/13] compiler.h: Split {READ,WRITE}_ONCE " Arnd Bergmann
2019-11-08 19:57     ` Arnd Bergmann
2019-11-11  8:10     ` [PATCH 01/13] compiler.h: Split {READ, WRITE}_ONCE " Christian Borntraeger
2019-11-11  8:10     ` [PATCH 01/13] compiler.h: Split {READ,WRITE}_ONCE " Christian Borntraeger
2019-11-11  8:10       ` Christian Borntraeger
2019-11-11  9:32       ` [PATCH 01/13] compiler.h: Split {READ, WRITE}_ONCE " Arnd Bergmann
2019-11-11  9:32         ` [PATCH 01/13] compiler.h: Split {READ,WRITE}_ONCE " Arnd Bergmann
2019-11-11  9:32         ` [PATCH 01/13] compiler.h: Split {READ, WRITE}_ONCE " Arnd Bergmann
2019-11-12 11:36         ` [PATCH 01/13] compiler.h: Split {READ,WRITE}_ONCE " Will Deacon
2019-11-12 11:36         ` Will Deacon
2019-11-08 17:01 ` [PATCH 01/13] compiler.h: Split {READ, WRITE}_ONCE " Will Deacon
2019-11-08 17:01 ` [PATCH 02/13] READ_ONCE: Undefine internal __READ_ONCE_SIZE macro after use Will Deacon
2019-11-08 17:01 ` Will Deacon
2019-11-08 17:01 ` [PATCH 03/13] READ_ONCE: Allow __READ_ONCE_SIZE cases to be overridden by the architecture Will Deacon
2019-11-08 17:01 ` Will Deacon
2019-11-08 17:01 ` [PATCH 04/13] vhost: Remove redundant use of read_barrier_depends() barrier Will Deacon
2019-11-08 17:01 ` Will Deacon
2019-11-08 17:01 ` [PATCH 05/13] alpha: Override READ_ONCE() with barriered implementation Will Deacon
2019-11-08 17:01 ` Will Deacon
2019-11-08 17:01 ` [PATCH 06/13] READ_ONCE: Remove smp_read_barrier_depends() invocation Will Deacon
2019-11-08 17:01 ` Will Deacon
2019-11-08 17:01 ` [PATCH 07/13] alpha: Replace smp_read_barrier_depends() usage with smp_[r]mb() Will Deacon
2019-11-08 17:01 ` Will Deacon
2019-11-08 17:01 ` [PATCH 08/13] locking/barriers: Remove definitions for [smp_]read_barrier_depends() Will Deacon
2019-11-08 17:01 ` Will Deacon
2019-11-08 17:01 ` [PATCH 09/13] Documentation/barriers: Remove references to [smp_]read_barrier_depends() Will Deacon
2019-11-21 19:32   ` [PATCH] Documentation/barriers/kokr: " SeongJae Park
2019-11-26 22:20     ` Paul E. McKenney
2019-11-29 18:08     ` [PATCH v2] " SeongJae Park
2019-12-06 17:20       ` SeongJae Park
2019-12-06 20:44         ` Paul E. McKenney
2019-12-06 21:29           ` SeongJae Park
2019-12-06 22:08             ` Paul E. McKenney
2019-12-06 22:38               ` SeongJae Park
2019-12-06 22:51                 ` Paul E. McKenney
2019-12-09  9:44                   ` Will Deacon
2019-12-09 17:00                     ` Paul E. McKenney
2019-12-09 17:06                       ` Will Deacon
2019-12-09 17:43                         ` SeongJae Park
2019-11-08 17:01 ` [PATCH 09/13] Documentation/barriers: " Will Deacon
2019-11-08 17:01 ` [PATCH 10/13] tools/memory-model: Remove smp_read_barrier_depends() from informal doc Will Deacon
2019-11-08 17:42   ` Alan Stern
2019-11-08 17:42     ` Alan Stern
2019-11-08 17:42   ` Alan Stern
2019-11-08 17:01 ` Will Deacon
2019-11-08 17:01 ` [PATCH 11/13] powerpc: Remove comment about read_barrier_depends() Will Deacon
2019-11-08 17:01 ` Will Deacon
2019-11-20 10:37   ` Michael Ellerman
2019-11-26 22:24     ` Paul E. McKenney
2019-11-08 17:01 ` [PATCH 12/13] include/linux: Remove smp_read_barrier_depends() from comments Will Deacon
2019-11-08 17:01 ` Will Deacon [this message]
2019-11-08 17:01 ` [PATCH 13/13] checkpatch: Remove checks relating to [smp_]read_barrier_depends() Will Deacon
2019-11-08 17:01 ` Will Deacon
2019-11-08 18:50 ` [PATCH 00/13] Finish off [smp_]read_barrier_depends() Paul E. McKenney

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