linux-kernel - [tip:locking/core] tools/memory-model: Remove ACCESS

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Date:   Tue, 17 Jul 2018 02:28:31 -0700
From:   tip-bot for Mark Rutland <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     paulmck@...ux.vnet.ibm.com, dhowells@...hat.com,
        andrea.parri@...rulasolutions.com, stern@...land.harvard.edu,
        mingo@...nel.org, npiggin@...il.com, akiyks@...il.com,
        peterz@...radead.org, mark.rutland@....com,
        linux-kernel@...r.kernel.org, hpa@...or.com, tglx@...utronix.de,
        will.deacon@....com, luc.maranget@...ia.fr,
        torvalds@...ux-foundation.org, j.alglave@....ac.uk,
        boqun.feng@...il.com
Subject: [tip:locking/core] tools/memory-model: Remove ACCESS_ONCE() from
 model

Commit-ID:  af41db5ef7c7cf0fee860f65cab59d0d188098d2
Gitweb:     https://git.kernel.org/tip/af41db5ef7c7cf0fee860f65cab59d0d188098d2
Author:     Mark Rutland <mark.rutland@....com>
AuthorDate: Mon, 16 Jul 2018 11:05:57 -0700
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 17 Jul 2018 09:29:35 +0200

tools/memory-model: Remove ACCESS_ONCE() from model

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@....com>
Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Acked-by: Andrea Parri <andrea.parri@...rulasolutions.com>
Cc: Akira Yokosawa <akiyks@...il.com>
Cc: Alan Stern <stern@...land.harvard.edu>
Cc: Boqun Feng <boqun.feng@...il.com>
Cc: David Howells <dhowells@...hat.com>
Cc: Jade Alglave <j.alglave@....ac.uk>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Luc Maranget <luc.maranget@...ia.fr>
Cc: Nicholas Piggin <npiggin@...il.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Will Deacon <will.deacon@....com>
Cc: linux-arch@...r.kernel.org
Cc: parri.andrea@...il.com
Link: http://lkml.kernel.org/r/20180716180605.16115-6-paulmck@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 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 *)