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McKenney" 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, Andrea Parri , "Paul E. McKenney" , Daniel Lustig , Jonathan Corbet Subject: [PATCH memory-model 5/5] doc: Replace smp_cond_acquire() with smp_cond_load_acquire() Date: Wed, 26 Sep 2018 11:29:20 -0700 X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180926182845.GA24839@linux.ibm.com> References: <20180926182845.GA24839@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18092618-0064-0000-0000-00000355980C X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009776; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000267; SDB=6.01094026; UDB=6.00565497; IPR=6.00874063; MB=3.00023518; MTD=3.00000008; XFM=3.00000015; UTC=2018-09-26 18:29:28 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18092618-0065-0000-0000-00003AC8240B Message-Id: <20180926182920.27644-5-paulmck@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-09-26_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=597 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1809260172 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andrea Parri Amend commit 1f03e8d2919270 ("locking/barriers: Replace smp_cond_acquire() with smp_cond_load_acquire()") by updating the documentation accordingly. Also remove some obsolete information related to the implementation. Signed-off-by: Andrea Parri Cc: Alan Stern Cc: Will Deacon Cc: Peter Zijlstra Cc: Boqun Feng Cc: Nicholas Piggin Cc: David Howells Cc: Jade Alglave Cc: Luc Maranget Cc: "Paul E. McKenney" Cc: Akira Yokosawa Cc: Daniel Lustig Cc: Jonathan Corbet Signed-off-by: Paul E. McKenney Acked-by: Will Deacon Acked-by: Alan Stern --- Documentation/memory-barriers.txt | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt index 0d8d7ef131e9..c1d913944ad8 100644 --- a/Documentation/memory-barriers.txt +++ b/Documentation/memory-barriers.txt @@ -471,8 +471,7 @@ And a couple of implicit varieties: operations after the ACQUIRE operation will appear to happen after the ACQUIRE operation with respect to the other components of the system. ACQUIRE operations include LOCK operations and both smp_load_acquire() - and smp_cond_acquire() operations. The later builds the necessary ACQUIRE - semantics from relying on a control dependency and smp_rmb(). + and smp_cond_load_acquire() operations. Memory operations that occur before an ACQUIRE operation may appear to happen after it completes. -- 2.17.1