From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org
Cc: mingo@kernel.org, stern@rowland.harvard.edu,
parri.andrea@gmail.com, will.deacon@arm.com,
peterz@infradead.org, boqun.feng@gmail.com, npiggin@gmail.com,
dhowells@redhat.com, j.alglave@ucl.ac.uk, luc.maranget@inria.fr,
akiyks@gmail.com, nborisov@suse.com,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: [PATCH RFC tools/lkmm 08/12] memory-barriers: Fix description of data dependency barriers
Date: Tue, 20 Feb 2018 15:25:08 -0800 [thread overview]
Message-ID: <1519169112-20593-8-git-send-email-paulmck@linux.vnet.ibm.com> (raw)
In-Reply-To: <20180220232405.GA19274@linux.vnet.ibm.com>
From: Nikolay Borisov <nborisov@suse.com>
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>
---
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 74ad222d11ed..0d83333b84a9 100644
--- a/Documentation/memory-barriers.txt
+++ b/Documentation/memory-barriers.txt
@@ -400,7 +400,7 @@ 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
--
2.5.2
next prev parent reply other threads:[~2018-02-20 23:26 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 ` Paul E. McKenney [this message]
2018-02-21 10:42 ` [tip:locking/core] memory-barriers: Fix description of data dependency barriers tip-bot for Nikolay Borisov
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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