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[213.220.210.175]) by smtp.gmail.com with ESMTPSA id rp21sm14247191ejb.97.2020.06.23.16.24.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Jun 2020 16:24:28 -0700 (PDT) Date: Wed, 24 Jun 2020 01:24:25 +0200 From: Andrea Parri To: Akira Yokosawa Cc: paulmck@kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, kernel-team@fb.com, mingo@kernel.org, stern@rowland.harvard.edu, will@kernel.org, peterz@infradead.org, boqun.feng@gmail.com, npiggin@gmail.com, dhowells@redhat.com, j.alglave@ucl.ac.uk, luc.maranget@inria.fr Subject: Re: [PATCH 2/2] Documentation/litmus-tests: Add note on herd7 7.56 in atomic litmus test Message-ID: <20200623232425.GB418699@andrea> References: <20200623005152.GA27459@paulmck-ThinkPad-P72> <20200623005231.27712-13-paulmck@kernel.org> <20200623155419.GI9247@paulmck-ThinkPad-P72> <9e1d448a-cf3c-523d-e0a6-f46ac4706c48@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9e1d448a-cf3c-523d-e0a6-f46ac4706c48@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 24, 2020 at 07:09:01AM +0900, Akira Yokosawa wrote: > From f808c371075d2f92b955da1a83ecb3828db1972e Mon Sep 17 00:00:00 2001 > From: Akira Yokosawa > Date: Wed, 24 Jun 2020 06:59:26 +0900 > Subject: [PATCH 2/2] Documentation/litmus-tests: Add note on herd7 7.56 in atomic litmus test > > herdtools 7.56 has enhanced herd7's C parser so that the "(void)expr" > construct in Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus is > accepted. > > This is independent of LKMM's cat model, so mention the required > version in the header of the litmus test and its entry in README. > > CC: Boqun Feng > Reported-by: Andrea Parri > Signed-off-by: Akira Yokosawa Frankly, I was hoping that we could simply bump the herd7 version in tools/memory-model/README; I understand your point, but I admit that I haven't being playing with 7.52 for a while now... Acked-by: Andrea Parri Andrea > --- > Documentation/litmus-tests/README | 1 + > .../atomic/Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus | 1 + > 2 files changed, 2 insertions(+) > > diff --git a/Documentation/litmus-tests/README b/Documentation/litmus-tests/README > index b79e640214b9..7f5c6c3ed6c3 100644 > --- a/Documentation/litmus-tests/README > +++ b/Documentation/litmus-tests/README > @@ -19,6 +19,7 @@ Atomic-RMW+mb__after_atomic-is-stronger-than-acquire.litmus > > Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus > Test that atomic_set() cannot break the atomicity of atomic RMWs. > + NOTE: Require herd7 7.56 or later which supports "(void)expr". > > > RCU (/rcu directory) > diff --git a/Documentation/litmus-tests/atomic/Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus b/Documentation/litmus-tests/atomic/Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus > index 49385314d911..ffd4d3e79c4a 100644 > --- a/Documentation/litmus-tests/atomic/Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus > +++ b/Documentation/litmus-tests/atomic/Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus > @@ -4,6 +4,7 @@ C Atomic-RMW-ops-are-atomic-WRT-atomic_set > * Result: Never > * > * Test that atomic_set() cannot break the atomicity of atomic RMWs. > + * NOTE: This requires herd7 7.56 or later which supports "(void)expr". > *) > > { > -- > 2.17.1 > >