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

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Date:   Thu, 14 May 2020 08:46:18 +0800
From:   Boqun Feng <boqun.feng@...il.com>
To:     Akira Yokosawa <akiyks@...il.com>
Cc:     "Paul E. McKenney" <paulmck@...nel.org>,
        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 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!

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
> 
>