Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Wed, 18 Jan 2023 11:03:35 -0500
From:   Alan Stern <stern@rowland.harvard.edu>
To:     "Paul E. McKenney" <paulmck@kernel.org>
Cc:     Andrea Parri <parri.andrea@gmail.com>,
        Jonas Oberhauser <jonas.oberhauser@huawei.com>,
        Peter Zijlstra <peterz@infradead.org>, will <will@kernel.org>,
        "boqun.feng" <boqun.feng@gmail.com>, npiggin <npiggin@gmail.com>,
        dhowells <dhowells@redhat.com>,
        "j.alglave" <j.alglave@ucl.ac.uk>,
        "luc.maranget" <luc.maranget@inria.fr>, akiyks <akiyks@gmail.com>,
        dlustig <dlustig@nvidia.com>, joel <joel@joelfernandes.org>,
        urezki <urezki@gmail.com>,
        quic_neeraju <quic_neeraju@quicinc.com>,
        frederic <frederic@kernel.org>,
        Kernel development list <linux-kernel@vger.kernel.org>
Subject: Re: Internal vs. external barriers (was: Re: Interesting LKMM litmus
 test)
Message-ID: <Y8gYV81O80BtMvWm@rowland.harvard.edu>
References: <Y8WTXS73qTBpUzcI@rowland.harvard.edu>
 <20230116190652.GZ2948950@paulmck-ThinkPad-P17-Gen-1>
 <Y8WjmTFnqbAnS1Pz@rowland.harvard.edu>
 <20230116221357.GA2948950@paulmck-ThinkPad-P17-Gen-1>
 <Y8aKlNY4Z0z2Yqs0@andrea>
 <20230117151416.GI2948950@paulmck-ThinkPad-P17-Gen-1>
 <Y8bFMgDSUZymXUsS@rowland.harvard.edu>
 <20230117174308.GK2948950@paulmck-ThinkPad-P17-Gen-1>
 <Y8dWMyBfz1iiaF8M@rowland.harvard.edu>
 <20230118051704.GX2948950@paulmck-ThinkPad-P17-Gen-1>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230118051704.GX2948950@paulmck-ThinkPad-P17-Gen-1>
Precedence: bulk

On Tue, Jan 17, 2023 at 09:17:04PM -0800, Paul E. McKenney wrote:
> On Tue, Jan 17, 2023 at 09:15:15PM -0500, Alan Stern wrote:
> > Maybe we don't.  Please test the patch below; I think it will do what 
> > you want -- and it doesn't rule out nesting.
> 
> It works like a champ on manual/kernel/C-srcu*.litmus in the litmus
> repository on github, good show and thank you!!!
> 
> I will make more tests, and am checking this against the rest of the
> litmus tests in the repo, but in the meantime would you be willing to
> have me add your Signed-off-by?

I'll email a real patch submission in the not-too-distant future, 
assuming you don't find any problems with the new code.

Alan