linux-kernel - Re: [PATCH RESEND 3/4] Documentation/litmus-tests: Merge atomic's README into top-level one

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Message-ID: <20200514171656.GR2869@paulmck-ThinkPad-P72>
Date:   Thu, 14 May 2020 10:16:56 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     Boqun Feng <boqun.feng@...il.com>
Cc:     Akira Yokosawa <akiyks@...il.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Vineeth Remanan Pillai <vpillai@...italocean.com>,
        Jonathan Corbet <corbet@....net>,
        Alan Stern <stern@...land.harvard.edu>,
        Andrea Parri <parri.andrea@...il.com>,
        Will Deacon <will@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Nicholas Piggin <npiggin@...il.com>,
        David Howells <dhowells@...hat.com>,
        Jade Alglave <j.alglave@....ac.uk>,
        Luc Maranget <luc.maranget@...ia.fr>,
        Daniel Lustig <dlustig@...dia.com>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>
Subject: Re: [PATCH RESEND 3/4] Documentation/litmus-tests: Merge atomic's
 README into top-level one

On Thu, May 14, 2020 at 08:46:18AM +0800, Boqun Feng wrote:
> On Wed, May 13, 2020 at 06:39:03AM +0900, Akira Yokosawa wrote:
> > From 96fa6680e3b990633ecbb6d11acf03a161b790bd Mon Sep 17 00:00:00 2001
> > From: Akira Yokosawa <akiyks@...il.com>
> > Date: Sun, 10 May 2020 15:12:57 +0900
> > Subject: [PATCH RESEND 3/4] Documentation/litmus-tests: Merge atomic's README into top-level one
> > 
> > Where Documentation/litmus-tests/README lists RCU litmus tests,
> > Documentation/litmus-tests/atomic/README lists atomic litmus tests.
> > For symmetry, merge the latter into former, with some context
> > adjustment in the introduction.
> > 
> > Signed-off-by: Akira Yokosawa <akiyks@...il.com>
> > Acked-by: Andrea Parri <parri.andrea@...il.com>
> > Acked-by: Joel Fernandes (Google) <joel@...lfernandes.org>
> 
> Acked-by: Boqun Feng <boqun.feng@...il.com>
> 
> Thanks!

Applied, and thank you all!

I rebased, cancelling the revert with the original, resulting in an
updated lkmm branch on -rcu.  There was one minor conflict, so could
one of you please check to make sure that I resolved things appropriately?

							Thanx, Paul

> Regards,
> Boqun
> 
> > ---
> >  Documentation/litmus-tests/README        | 19 +++++++++++++++++++
> >  Documentation/litmus-tests/atomic/README | 16 ----------------
> >  2 files changed, 19 insertions(+), 16 deletions(-)
> >  delete mode 100644 Documentation/litmus-tests/atomic/README
> > 
> > diff --git a/Documentation/litmus-tests/README b/Documentation/litmus-tests/README
> > index c4307ea9f996..ac0b270b456c 100644
> > --- a/Documentation/litmus-tests/README
> > +++ b/Documentation/litmus-tests/README
> > @@ -2,6 +2,25 @@
> >  LITMUS TESTS
> >  ============
> >  
> > +Each subdirectory contains litmus tests that are typical to describe the
> > +semantics of respective kernel APIs.
> > +For more information about how to "run" a litmus test or how to generate
> > +a kernel test module based on a litmus test, please see
> > +tools/memory-model/README.
> > +
> > +
> > +atomic (/atomic derectory)
> > +--------------------------
> > +
> > +Atomic-RMW+mb__after_atomic-is-stronger-than-acquire.litmus
> > +    Test that an atomic RMW followed by a smp_mb__after_atomic() is
> > +    stronger than a normal acquire: both the read and write parts of
> > +    the RMW are ordered before the subsequential memory accesses.
> > +
> > +Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus
> > +    Test that atomic_set() cannot break the atomicity of atomic RMWs.
> > +
> > +
> >  RCU (/rcu directory)
> >  --------------------
> >  
> > diff --git a/Documentation/litmus-tests/atomic/README b/Documentation/litmus-tests/atomic/README
> > deleted file mode 100644
> > index 714cf93816ea..000000000000
> > --- a/Documentation/litmus-tests/atomic/README
> > +++ /dev/null
> > @@ -1,16 +0,0 @@
> > -This directory contains litmus tests that are typical to describe the semantics
> > -of our atomic APIs. For more information about how to "run" a litmus test or
> > -how to generate a kernel test module based on a litmus test, please see
> > -tools/memory-model/README.
> > -
> > -============
> > -LITMUS TESTS
> > -============
> > -
> > -Atomic-RMW+mb__after_atomic-is-stronger-than-acquire
> > -	Test that an atomic RMW followed by a smp_mb__after_atomic() is
> > -	stronger than a normal acquire: both the read and write parts of
> > -	the RMW are ordered before the subsequential memory accesses.
> > -
> > -Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus
> > -	Test that atomic_set() cannot break the atomicity of atomic RMWs.
> > -- 
> > 2.17.1
> > 
> >