From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
mingo@kernel.org
Cc: 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,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: [PATCH memory-model 06/19] tools/memory-order: smp_mb__after_atomic() orders later RMW operations
Date: Mon, 14 May 2018 16:33:44 -0700 [thread overview]
Message-ID: <1526340837-12222-6-git-send-email-paulmck@linux.vnet.ibm.com> (raw)
In-Reply-To: <20180514233328.GA7601@linux.vnet.ibm.com>
The current cheat sheet does not claim that smp_mb__after_atomic()
orders later RMW atomic operations, which it must, at least against
earlier RMW atomic operations and whatever precedes them. This commit
therefore adds the needed "Y".
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
---
tools/memory-model/Documentation/cheatsheet.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/memory-model/Documentation/cheatsheet.txt b/tools/memory-model/Documentation/cheatsheet.txt
index 46fe79afc737..33ba98d72b16 100644
--- a/tools/memory-model/Documentation/cheatsheet.txt
+++ b/tools/memory-model/Documentation/cheatsheet.txt
@@ -14,7 +14,7 @@ smp_wmb() Y W Y Y W
smp_mb() & synchronize_rcu() CP Y Y Y Y Y Y Y Y
Successful full non-void RMW CP Y Y Y Y Y Y Y Y Y Y Y
smp_mb__before_atomic() CP Y Y Y a a a a Y
-smp_mb__after_atomic() CP a a Y Y Y Y Y
+smp_mb__after_atomic() CP a a Y Y Y Y Y Y
Key: C: Ordering is cumulative
--
2.5.2
next prev parent reply other threads:[~2018-05-14 23:34 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-14 23:33 [PATCH memory-model 0/19] Updates to the formal memory model Paul E. McKenney
2018-05-14 23:33 ` [PATCH memory-model 01/19] tools/memory-model: Rename link and rcu-path to rcu-link and rb Paul E. McKenney
2018-05-15 6:27 ` [tip:locking/core] " tip-bot for Alan Stern
2018-05-14 23:33 ` [PATCH memory-model 02/19] tools/memory-model: Redefine rb in terms of rcu-fence Paul E. McKenney
2018-05-15 6:27 ` [tip:locking/core] " tip-bot for Alan Stern
2018-05-14 23:33 ` [PATCH memory-model 03/19] tools/memory-model: Update required version of herdtools7 Paul E. McKenney
2018-05-15 6:28 ` [tip:locking/core] " tip-bot for Akira Yokosawa
2018-05-14 23:33 ` [PATCH memory-model 04/19] tools/memory-model: Fix cheat sheet typo Paul E. McKenney
2018-05-15 6:28 ` [tip:locking/core] " tip-bot for Paolo Bonzini
2018-05-14 23:33 ` [PATCH memory-model 05/19] tools/memory-order: Improve key for SELF and SV Paul E. McKenney
2018-05-15 6:29 ` [tip:locking/core] " tip-bot for Paul E. McKenney
2018-05-14 23:33 ` Paul E. McKenney [this message]
2018-05-15 6:29 ` [tip:locking/core] tools/memory-order: Update the cheat-sheet to show that smp_mb__after_atomic() orders later RMW operations tip-bot for Paul E. McKenney
2018-05-14 23:33 ` [PATCH memory-model 07/19] tools/memory-model: Model 'smp_store_mb()' Paul E. McKenney
2018-05-15 6:30 ` [tip:locking/core] " tip-bot for Andrea Parri
2018-05-14 23:33 ` [PATCH memory-model 08/19] tools/memory-model: Fix coding style in 'linux-kernel.def' Paul E. McKenney
2018-05-15 6:30 ` [tip:locking/core] " tip-bot for Andrea Parri
2018-05-14 23:33 ` [PATCH memory-model 09/19] tools/memory-model: Add scripts to test memory model Paul E. McKenney
2018-05-15 6:31 ` [tip:locking/core] " tip-bot for Paul E. McKenney
2018-05-14 23:33 ` [PATCH memory-model 10/19] tools/memory-model: Add model support for spin_is_locked Paul E. McKenney
2018-05-15 6:31 ` [tip:locking/core] tools/memory-model: Add model support for spin_is_locked() tip-bot for Luc Maranget
2018-05-14 23:33 ` [PATCH memory-model 11/19] tools/memory-model: Flag "cumulativity" and "propagation" tests Paul E. McKenney
2018-05-15 6:32 ` [tip:locking/core] " tip-bot for Paul E. McKenney
2018-05-14 23:33 ` [PATCH memory-model 12/19] tools/memory-model: Remove duplicated code from lock.cat Paul E. McKenney
2018-05-15 6:32 ` [tip:locking/core] " tip-bot for Alan Stern
2018-05-14 23:33 ` [PATCH memory-model 13/19] tools/memory-model: Improve comments in lock.cat Paul E. McKenney
2018-05-15 6:33 ` [tip:locking/core] " tip-bot for Alan Stern
2018-05-14 23:33 ` [PATCH memory-model 14/19] tools/memory-model: Improve mixed-access checking " Paul E. McKenney
2018-05-15 6:33 ` [tip:locking/core] " tip-bot for Alan Stern
2018-05-14 23:33 ` [PATCH memory-model 15/19] tools/memory-model: Remove out-of-date comments and code from lock.cat Paul E. McKenney
2018-05-15 6:34 ` [tip:locking/core] " tip-bot for Alan Stern
2018-05-14 23:33 ` [PATCH memory-model 16/19] tools/memory-model: Fix coding style in 'lock.cat' Paul E. McKenney
2018-05-15 6:34 ` [tip:locking/core] " tip-bot for Andrea Parri
2018-05-14 23:33 ` [PATCH memory-model 17/19] MAINTAINERS: Update e-mail address for Andrea Parri Paul E. McKenney
2018-05-15 6:35 ` [tip:locking/core] MAINTAINERS, tools/memory-model: " tip-bot for Andrea Parri
2018-05-14 23:33 ` [PATCH memory-model 18/19] tools/memory-model: Update ASPLOS information Paul E. McKenney
2018-05-15 6:35 ` [tip:locking/core] " tip-bot for Andrea Parri
2018-05-14 23:33 ` [PATCH memory-model 19/19] tools/memory-model: Add reference for 'Simplifying ARM concurrency' Paul E. McKenney
2018-05-15 6:36 ` [tip:locking/core] " tip-bot for Andrea Parri
2018-05-15 6:15 ` [PATCH memory-model 0/19] Updates to the formal memory model Ingo Molnar
2018-05-15 16:20 ` Paul E. McKenney
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