From: tip-bot for Nikolay Borisov <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: mingo@kernel.org, torvalds@linux-foundation.org,
linux-kernel@vger.kernel.org, paulmck@linux.vnet.ibm.com,
peterz@infradead.org, hpa@zytor.com, nborisov@suse.com,
tglx@linutronix.de
Subject: [tip:locking/core] memory-barriers: Fix description of data dependency barriers
Date: Wed, 21 Feb 2018 02:42:53 -0800 [thread overview]
Message-ID: <tip-51de78892b1294d1521c41226a5ef215a910c25f@git.kernel.org> (raw)
In-Reply-To: <1519169112-20593-8-git-send-email-paulmck@linux.vnet.ibm.com>
Commit-ID: 51de78892b1294d1521c41226a5ef215a910c25f
Gitweb: https://git.kernel.org/tip/51de78892b1294d1521c41226a5ef215a910c25f
Author: Nikolay Borisov <nborisov@suse.com>
AuthorDate: Tue, 20 Feb 2018 15:25:08 -0800
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 21 Feb 2018 09:58:14 +0100
memory-barriers: Fix description of data dependency barriers
In the description of data dependency barriers the words 'before' is
used erroneously. Since such barrier order dependent loads one after
the other. So substitute 'before' with 'after'.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: akiyks@gmail.com
Cc: boqun.feng@gmail.com
Cc: dhowells@redhat.com
Cc: j.alglave@ucl.ac.uk
Cc: linux-arch@vger.kernel.org
Cc: luc.maranget@inria.fr
Cc: npiggin@gmail.com
Cc: parri.andrea@gmail.com
Cc: stern@rowland.harvard.edu
Cc: will.deacon@arm.com
Link: http://lkml.kernel.org/r/1519169112-20593-8-git-send-email-paulmck@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
Documentation/memory-barriers.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt
index a37d3af..da6525b 100644
--- a/Documentation/memory-barriers.txt
+++ b/Documentation/memory-barriers.txt
@@ -403,7 +403,7 @@ Memory barriers come in four basic varieties:
where two loads are performed such that the second depends on the result
of the first (eg: the first load retrieves the address to which the second
load will be directed), a data dependency barrier would be required to
- make sure that the target of the second load is updated before the address
+ make sure that the target of the second load is updated after the address
obtained by the first load is accessed.
A data dependency barrier is a partial ordering on interdependent loads
next prev parent reply other threads:[~2018-02-21 10:43 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-20 23:24 [PATCH RFC tools/lkmm 0/12] Miscellaneous fixes Paul E. McKenney
2018-02-20 23:25 ` [PATCH RFC tools/lkmm 01/12] tools/memory-model: Clarify the origin/scope of the tool name Paul E. McKenney
2018-02-21 10:39 ` [tip:locking/core] " tip-bot for Andrea Parri
2018-02-20 23:25 ` [PATCH RFC tools/lkmm 02/12] MAINTAINERS: Add the Memory Consistency Model subsystem Paul E. McKenney
2018-02-21 10:39 ` [tip:locking/core] " tip-bot for Andrea Parri
2018-02-20 23:25 ` [PATCH RFC tools/lkmm 03/12] MAINTAINERS: List file memory-barriers.txt within the LKMM entry Paul E. McKenney
2018-02-21 10:40 ` [tip:locking/core] " tip-bot for Andrea Parri
2018-02-20 23:25 ` [PATCH RFC tools/lkmm 04/12] EXP litmus_tests: Add comments explaining tests' purposes Paul E. McKenney
2018-02-21 10:40 ` [tip:locking/core] " tip-bot for Paul E. McKenney
2018-02-20 23:25 ` [PATCH RFC tools/lkmm 05/12] README: Fix a couple of punctuation errors Paul E. McKenney
2018-02-21 10:41 ` [tip:locking/core] " tip-bot for Paul E. McKenney
2018-02-20 23:25 ` [PATCH RFC tools/lkmm 06/12] MAINTAINERS: Add Akira Yokosawa as an LKMM reviewer Paul E. McKenney
2018-02-21 10:41 ` [tip:locking/core] " tip-bot for Paul E. McKenney
2018-02-20 23:25 ` [PATCH RFC tools/lkmm 07/12] Documentation/memory-barriers.txt: Cross-reference "tools/memory-model/" Paul E. McKenney
2018-02-21 10:42 ` [tip:locking/core] " tip-bot for Andrea Parri
2018-02-20 23:25 ` [PATCH RFC tools/lkmm 08/12] memory-barriers: Fix description of data dependency barriers Paul E. McKenney
2018-02-21 10:42 ` tip-bot for Nikolay Borisov [this message]
2018-02-20 23:25 ` [PATCH RFC tools/lkmm 09/12] tools/memory-model: Add required herd7 version to README file Paul E. McKenney
2018-02-21 10:43 ` [tip:locking/core] " tip-bot for Paul E. McKenney
2018-02-21 15:10 ` [PATCH RFC tools/lkmm 09/12] " Alan Stern
2018-02-21 15:10 ` Alan Stern
2018-02-21 16:15 ` Paul E. McKenney
2018-02-21 16:51 ` Alan Stern
2018-02-21 16:51 ` Alan Stern
2018-02-20 23:25 ` [PATCH RFC tools/lkmm 10/12] tools/memory-model: Add a S lock-based external-view litmus test Paul E. McKenney
2018-02-21 10:43 ` [tip:locking/core] " tip-bot for Alan Stern
2018-02-21 15:09 ` [PATCH RFC tools/lkmm 10/12] " Alan Stern
2018-02-21 15:09 ` Alan Stern
2018-02-21 16:12 ` Paul E. McKenney
2018-02-21 16:50 ` Alan Stern
2018-02-21 16:50 ` Alan Stern
2018-02-21 17:53 ` Paul E. McKenney
2018-02-21 18:38 ` Alan Stern
2018-02-21 18:38 ` Alan Stern
2018-02-21 19:05 ` Paul E. McKenney
2018-02-21 19:27 ` Alan Stern
2018-02-21 19:27 ` Alan Stern
2018-02-21 22:25 ` Paul E. McKenney
2018-02-22 3:23 ` Boqun Feng
2018-02-22 4:13 ` Paul E. McKenney
2018-02-22 5:27 ` Boqun Feng
2018-02-22 5:42 ` Daniel Lustig
2018-02-22 5:42 ` Daniel Lustig
2018-02-22 6:58 ` Boqun Feng
2018-02-22 10:15 ` Peter Zijlstra
2018-02-22 10:45 ` Boqun Feng
2018-02-22 11:59 ` Peter Zijlstra
2018-02-22 10:06 ` Peter Zijlstra
2018-02-22 10:20 ` Peter Zijlstra
2018-02-20 23:25 ` [PATCH RFC tools/lkmm 11/12] tools/memory-model: Convert underscores to hyphens Paul E. McKenney
2018-02-21 10:44 ` [tip:locking/core] " tip-bot for Paul E. McKenney
2018-02-20 23:25 ` [PATCH RFC tools/lkmm 12/12] tools/memory-model: Remove rb-dep, smp_read_barrier_depends, and lockless_dereference Paul E. McKenney
2018-02-21 10:45 ` [tip:locking/core] " tip-bot for Alan Stern
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