linux-kernel - Re: [RFC 0/3] tools/memory-model: Add litmus tests for atomic APIs

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Message-ID: <20200214095513.GJ14879@hirez.programming.kicks-ass.net>
Date:   Fri, 14 Feb 2020 10:55:13 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Boqun Feng <boqun.feng@...il.com>
Cc:     linux-kernel@...r.kernel.org,
        Alan Stern <stern@...land.harvard.edu>,
        Andrea Parri <parri.andrea@...il.com>,
        Will Deacon <will@...nel.org>,
        Nicholas Piggin <npiggin@...il.com>,
        David Howells <dhowells@...hat.com>,
        Jade Alglave <j.alglave@....ac.uk>,
        Luc Maranget <luc.maranget@...ia.fr>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Akira Yokosawa <akiyks@...il.com>,
        Daniel Lustig <dlustig@...dia.com>,
        Jonathan Corbet <corbet@....net>, linux-arch@...r.kernel.org,
        linux-doc@...r.kernel.org
Subject: Re: [RFC 0/3] tools/memory-model: Add litmus tests for atomic APIs

On Fri, Feb 14, 2020 at 12:01:29PM +0800, Boqun Feng wrote:
> A recent discussion raises up the requirement for having test cases for
> atomic APIs:
> 
> 	https://lore.kernel.org/lkml/20200213085849.GL14897@hirez.programming.kicks-ass.net/
> 
> , and since we already have a way to generate a test module from a
> litmus test with klitmus[1]. It makes sense that we add more litmus
> tests for atomic APIs into memory-model.
> 
> So I begin to do this and the plan is to add the litmus tests we already
> use in atomic_t.txt, ones from Paul's litmus collection[2], and any
> other valuable litmus test we come up while adding the previous two
> kinds of tests.
> 
> This patchset finishes the first part (adding atomic_t.txt litmus
> tests). I also improve the atomic_t.txt to make it consistent with the
> litmus tests.
> 
> One thing to note is patch #2 requires a modification to herd and I just
> made a PR to Luc's repo:
> 
> 	https://github.com/herd/herdtools7/pull/28
> 
> , so if this patchset looks good to everyone and someone plans to take
> it (and I assume is Paul), please wait until that PR is settled. And
> probably we need to bump the required herd version because of it.
> 
> Comments and suggesions are welcome!

Very nice, thanks!