linux-kernel - Re: [PATCH 0/2] tools/memory-model: remove ACCESS

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Date:   Thu, 28 Jun 2018 08:21:40 -0700
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     Andrea Parri <andrea.parri@...rulasolutions.com>
Cc:     Mark Rutland <mark.rutland@....com>, linux-kernel@...r.kernel.org,
        akiyks@...il.com, boqun.feng@...il.com, dhowells@...hat.com,
        j.alglave@....ac.uk, luc.maranget@...ia.fr, npiggin@...il.com,
        peterz@...radead.org, stern@...land.harvard.edu,
        will.deacon@....com
Subject: Re: [PATCH 0/2] tools/memory-model: remove ACCESS_ONCE()

On Thu, Jun 28, 2018 at 02:38:45PM +0200, Andrea Parri wrote:
> On Thu, Jun 28, 2018 at 01:33:45PM +0100, Mark Rutland wrote:
> > Since commit:
> >     
> >   b899a850431e2dd0 ("compiler.h: Remove ACCESS_ONCE()")
> >     
> > ... there has been no definition of ACCESS_ONCE() in the kernel tree,
> > and it has been necessary to use READ_ONCE() or WRITE_ONCE() instead.
> > 
> > However, since then the kernel memory model was added to the Linux tree,
> > sporting new instances of ACCESS_ONCE() in examples and in the memory
> > model itself.
> > 
> > These patches remove the new instances of ACCESS_ONCE() for consistency
> > with the contemporary codebase.
> > 
> > Thanks,
> > Mark.
> > 
> > Mark Rutland (2):
> >   tools/memory-model: remove ACCESS_ONCE() from recipes
> >   tools/memory-model: remove ACCESS_ONCE() from model
> 
> For the series:
> 
> Acked-by: Andrea Parri <andrea.parri@...rulasolutions.com>

Applied, thank you both!  These both are ready for the upcoming merge
window.

While I am at it, here is the current scorecard:

e9ff68680cd4 tools/memory-model: Add litmus test for full multicopy atomicity
c21fcc6594f1 tools/memory-model: Fix ISA2+pooncelock+pooncelock+pombonce name
aa838e0b70e1 MAINTAINERS: Add Daniel Lustig as an LKMM reviewer
3cb0d7701c4c locking/memory-barriers.txt/kokr: Update Korean translation to fix broken DMA vs. MMIO ordering example
0bde941f3629 tools/memory-model: Remove ACCESS_ONCE() from recipes
80b7b05c3aa0 tools/memory-model: Remove ACCESS_ONCE() from model

	The above patches are ready for the upcoming merge window because
	each has at least one Acked-by or Reviewed-by.

6098ce88bc4d tools/memory-model: Make scripts executable
5bb22d0126f9 tools/memory-model: Rename litmus tests to comply to norm7
1bc179880fba docs: atomic_ops: Describe atomic_set as a write operation

	The above patches need at least one additional Acked-by
	or Reviewed-by.  If any of you gets a chance, please do
	look them over.

51b0a8985c5a EXP tools/memory-model: Add litmus-test naming scheme

	This patch needs me to get Will Deacon's feedback applied.  :-/

06e99a0d9662 EXP tools/memory-model: Add .cfg and .cat files for s390

	This is a placeholder, and probably won't ever go upstream
	into the Linux kernel.  (Maybe someday into herd where the
	other architecture-specific .cat files live.)

							Thanx, Paul

> Cheers,
>   Andrea
> 
> 
> > 
> >  tools/memory-model/Documentation/recipes.txt | 4 ++--
> >  tools/memory-model/linux-kernel.bell         | 2 +-
> >  2 files changed, 3 insertions(+), 3 deletions(-)
> > 
> > -- 
> > 2.11.0
> > 
>