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,
Mark Rutland <mark.rutland@arm.com>,
"Paul E . McKenney" <paulmck@linux.vnet.ibm.com>
Subject: [PATCH memory-model 06/14] tools/memory-model: Remove ACCESS_ONCE() from model
Date: Mon, 16 Jul 2018 11:05:57 -0700 [thread overview]
Message-ID: <20180716180605.16115-6-paulmck@linux.vnet.ibm.com> (raw)
In-Reply-To: <20180716180540.GA14222@linux.vnet.ibm.com>
From: Mark Rutland <mark.rutland@arm.com>
Since commit:
b899a850431e2dd0 ("compiler.h: Remove ACCESS_ONCE()")
... there has been no definition of ACCESS_ONCE() in the kernel tree,
and it has been necessary to use READ_ONCE() or WRITE_ONCE() instead.
Correspondingly, let's remove ACCESS_ONCE() from the kernel memory
model.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Jade Alglave <j.alglave@ucl.ac.uk>
Cc: Luc Maranget <luc.maranget@inria.fr>
Cc: Akira Yokosawa <akiyks@gmail.com>
Acked-by: Andrea Parri <andrea.parri@amarulasolutions.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
tools/memory-model/linux-kernel.bell | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/memory-model/linux-kernel.bell b/tools/memory-model/linux-kernel.bell
index 64f5740e0e75..b84fb2f67109 100644
--- a/tools/memory-model/linux-kernel.bell
+++ b/tools/memory-model/linux-kernel.bell
@@ -13,7 +13,7 @@
"Linux-kernel memory consistency model"
-enum Accesses = 'once (*READ_ONCE,WRITE_ONCE,ACCESS_ONCE*) ||
+enum Accesses = 'once (*READ_ONCE,WRITE_ONCE*) ||
'release (*smp_store_release*) ||
'acquire (*smp_load_acquire*) ||
'noreturn (* R of non-return RMW *)
--
2.17.1
next prev parent reply other threads:[~2018-07-16 18:05 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-16 18:05 [PATCH memory-model 0/14] Updates to the formal memory model Paul E. McKenney
2018-07-16 18:05 ` Paul E. McKenney
2018-07-16 18:05 ` [PATCH memory-model 01/14] tools/memory-model: Add litmus test for full multicopy atomicity Paul E. McKenney
2018-07-16 18:05 ` Paul E. McKenney
2018-07-16 18:05 ` [PATCH memory-model 02/14] tools/memory-model: Fix ISA2+pooncelock+pooncelock+pombonce name Paul E. McKenney
2018-07-16 18:05 ` Paul E. McKenney
2018-07-16 18:05 ` [PATCH memory-model 03/14] MAINTAINERS: Add Daniel Lustig as an LKMM reviewer Paul E. McKenney
2018-07-16 18:05 ` Paul E. McKenney
2018-07-16 18:05 ` [PATCH memory-model 04/14] locking/memory-barriers.txt/kokr: Update Korean translation to fix broken DMA vs. MMIO ordering example Paul E. McKenney
2018-07-16 18:05 ` Paul E. McKenney
2018-07-16 18:05 ` [PATCH memory-model 05/14] tools/memory-model: Remove ACCESS_ONCE() from recipes Paul E. McKenney
2018-07-16 18:05 ` Paul E. McKenney
2018-07-16 18:05 ` Paul E. McKenney [this message]
2018-07-16 18:05 ` [PATCH memory-model 06/14] tools/memory-model: Remove ACCESS_ONCE() from model Paul E. McKenney
2018-07-16 18:05 ` [PATCH memory-model 07/14] tools/memory-model: Make scripts executable Paul E. McKenney
2018-07-16 18:05 ` Paul E. McKenney
2018-07-16 18:05 ` [PATCH memory-model 08/14] docs: atomic_ops: Describe atomic_set as a write operation Paul E. McKenney
2018-07-16 18:05 ` Paul E. McKenney
2018-07-16 18:06 ` [PATCH memory-model 09/14] tools/memory-model: Add informal LKMM documentation to MAINTAINERS Paul E. McKenney
2018-07-16 18:06 ` Paul E. McKenney
2018-07-16 18:06 ` [PATCH memory-model 10/14] sched: Use smp_mb() in wake_woken_function() Paul E. McKenney
2018-07-16 18:06 ` Paul E. McKenney
2018-07-16 18:06 ` [PATCH memory-model 11/14] locking: Clarify requirements for smp_mb__after_spinlock() Paul E. McKenney
2018-07-16 18:06 ` Paul E. McKenney
2018-07-16 18:06 ` [PATCH memory-model 12/14] doc: Update wake_up() & co. memory-barrier guarantees Paul E. McKenney
2018-07-16 18:06 ` Paul E. McKenney
2018-07-16 18:06 ` [PATCH memory-model 13/14] memory-model/Documentation: Fix typo, smb->smp Paul E. McKenney
2018-07-16 18:06 ` Paul E. McKenney
2018-07-16 18:06 ` [PATCH memory-model 14/14] tools/memory-model: Rename litmus tests to comply to norm7 Paul E. McKenney
2018-07-16 18:06 ` Paul E. McKenney
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