linux-kernel - Re: [PATCH memory-model 0/3] Updates to the formal memory model

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Message-Id: <20181204163640.GX4170@linux.ibm.com>
Date:   Tue, 4 Dec 2018 08:36:40 -0800
From:   "Paul E. McKenney" <paulmck@...ux.ibm.com>
To:     Akira Yokosawa <akiyks@...il.com>
Cc:     mingo@...nel.org, linux-kernel@...r.kernel.org,
        linux-arch@...r.kernel.org, stern@...land.harvard.edu,
        parri.andrea@...il.com, will.deacon@....com, peterz@...radead.org,
        boqun.feng@...il.com, npiggin@...il.com, dhowells@...hat.com,
        j.alglave@....ac.uk, luc.maranget@...ia.fr
Subject: Re: [PATCH memory-model 0/3] Updates to the formal memory model

On Wed, Dec 05, 2018 at 12:40:01AM +0900, Akira Yokosawa wrote:
> On 2018/12/03 15:51:27 -0800, Paul E. McKenney wrote:
> > On Tue, Dec 04, 2018 at 08:28:03AM +0900, Akira Yokosawa wrote:
> >> On 2018/12/03 15:04:11 -0800, Paul E. McKenney wrote:
> >>> Hello, Ingo!
> >>>
> >>> This series contains updates to the Linux kernel's formal memory model
> >>> in tools/memory-model.  These patches are ready for inclusion into -tip.
> >>>
> >>> 1.	Model smp_mb__after_unlock_lock(), courtesy of Andrea Parri.
> >>>
> >>> 2.	Add scripts to check github litmus tests.
> >>>
> >>> 3.	Make scripts take "-j" abbreviation for "--jobs".
> >>>
> >>> There is another series in preparation to model SRCU, but this series
> >>> requires hot-off-the presses changes to the herd tool that have not yet
> >>> been released.  This SRCU series is therefore targeting the merge window
> >>> after the upcoming one.  People wishing to experiment with the prototype
> >>> SRCU model may obtain it from my -rcu tree at branch "dev", and use
> >>> a bleeding-edge herd7 built from https://github.com/herd/herdtools7/,
> >>> version 7.51+2(dev), which is (commit 10403b24070c) or later.
> >>
> >> On the master branch of herdtools7, SRCU support was added in version
> >> 7.51+4(dev), which is commit 6ec9da1f4d58, or later.
> > 
> > It has been working for me with version 7.51+2(dev), but perhaps I
> > have just been getting lucky.  It wouldn't be the first time!  ;-)
> 
> Sounds like you've been at the HEAD of topic branch "srcu".

You are quite right.  And this situation does confirm the wisdom of
waiting until a herd release containing the SRCU support.  ;-)

							Thanx, Paul

>         Thanks, Akira
> > 
> > 							Thanx, Paul
> > 
> >>         Thanks, Akira
> >>
> >>>
> >>> 							Thanx, Paul
> >>>
> >>> ------------------------------------------------------------------------
> >>>
> >>>  .gitignore                 |    1 
> >>>  README                     |    2 
> >>>  linux-kernel.bell          |    3 
> >>>  linux-kernel.cat           |    4 -
> >>>  linux-kernel.def           |    1 
> >>>  scripts/README             |   70 ++++++++++++++++++++++
> >>>  scripts/checkalllitmus.sh  |   53 +++++++----------
> >>>  scripts/checkghlitmus.sh   |   65 ++++++++++++++++++++
> >>>  scripts/checklitmus.sh     |   74 +++--------------------
> >>>  scripts/checklitmushist.sh |   60 +++++++++++++++++++
> >>>  scripts/cmplitmushist.sh   |   87 +++++++++++++++++++++++++++
> >>>  scripts/initlitmushist.sh  |   68 +++++++++++++++++++++
> >>>  scripts/judgelitmus.sh     |   78 +++++++++++++++++++++++++
> >>>  scripts/newlitmushist.sh   |   61 +++++++++++++++++++
> >>>  scripts/parseargs.sh       |  140 ++++++++++++++++++++++++++++++++++++++++++++-
> >>>  scripts/runlitmushist.sh   |   87 +++++++++++++++++++++++++++
> >>>  16 files changed, 757 insertions(+), 97 deletions(-)
> >>>
> >>
> > 
>