From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
will.deacon@arm.com, mark.rutland@arm.com, snitzer@redhat.com,
thor.thayer@linux.intel.com, viro@zeniv.linux.org.uk,
davem@davemloft.net, shuah@kernel.org, mpe@ellerman.id.au,
tj@kernel.org
Subject: Re: [GIT PULL de-alpha] Make core code not need to know about Alpha for v4.15
Date: Wed, 25 Oct 2017 01:54:14 -0700 [thread overview]
Message-ID: <20171025085414.GH3659@linux.vnet.ibm.com> (raw)
In-Reply-To: <20171025084548.mc7pqlshuzmtci4p@gmail.com>
On Wed, Oct 25, 2017 at 10:45:48AM +0200, Ingo Molnar wrote:
>
> * Paul E. McKenney <paulmck@linux.vnet.ibm.com> wrote:
>
> > Hello, Ingo,
> >
> > This series is a first step towards making the core kernel no longer
> > need to consider DEC Alpha as a special case. This is accomplished
> > by two sets of patches, followed by a Coccinelle script:
> >
> > 1. Patches 1/19 through 15/19 in the following patches, which
> > change non-Coccinelle-susceptible instances of ACCESS_ONCE()
> > to either READ_ONCE() or WRITE_ONCE(), as appropriate. Most of
> > these patches are courtesy of Mark Rutland.
> >
> > 2. Patches 16/19 through 18/19 in the following patches, which
> > add smp_read_barrier_depends() to READ_ONCE() and to Alpha's
> > value-returning _release and _relaxed atomic read-modify-write
> > operations, while also removing lockless_dereference() in favor
> > of the modified READ_ONCE().
> >
> > 3. A patch generated by Coccinelle (script in commit log) that
> > converts ACCESS_ONCE() to either READ_ONCE() or WRITE_ONCE(),
> > as appropriate. Of course, this patch should not be applied
> > as-is to mainline, instead, the Coccinelle script should be
> > re-run in order to account for any changes between now and
> > the time of merging into mainline.
> >
> > A later series (most likely targeted to v4.16) will remove instances of
> > smp_read_barrier_depends() that are made redundant by this series, that
> > is to say, almost all of them.
> >
> > These changes are available in the git repository at:
> >
> > git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/alpha-cocci
> >
> > for you to fetch changes up to d19fa5187a69bd7685e9c7452ce9e339b1b079fc:
> >
> > COCCINELLE: treewide: kill off ACCESS_ONCE() (2017-10-21 12:52:09 -0700)
> >
> > ----------------------------------------------------------------
> > Mark Rutland (14):
> > dm integrity: Kill off ACCESS_ONCE()
> > EDAC, altera: Kill off ACCESS_ONCE()
> > firmware/ivc: Kill off ACCESS_ONCE()
> > fs: dcache: Kill off ACCESS_ONCE()
> > fs: ncpfs: Kill off ACCESS_ONCE()
> > media: dvb_ringbuffer: Kill off ACCESS_ONCE()
> > net: netlink/netfilter: Kill off ACCESS_ONCE()
> > net/ipv4/tcp_input.c: Kill off ACCESS_ONCE()
> > net: average: Kill off ACCESS_ONCE()
> > samples: mic/mpssd/mpssd.c: Kill off ACCESS_ONCE()
> > selftests/powerpc: Kill off ACCESS_ONCE()
> > workqueue: Kill off ACCESS_ONCE()
> > rcutorture: formal: Prepare for ACCESS_ONCE() removal
> > COCCINELLE: treewide: kill off ACCESS_ONCE()
>
> None of the patches from Mark include your Signed-off-by - I'll add them, let me
> know if that's not OK. I suppose this happened because you rebased his tree?
I did pull his tree rather than applying from email, and no problem
adding my Signed-off-by.
Thanx, Paul
next prev parent reply other threads:[~2017-10-25 8:54 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-23 21:04 [GIT PULL de-alpha] Make core code not need to know about Alpha for v4.15 Paul E. McKenney
2017-10-23 21:07 ` [PATCH 01/19] dm integrity: Kill off ACCESS_ONCE() Paul E. McKenney
2017-10-23 21:07 ` Paul E. McKenney
2017-10-23 21:07 ` [PATCH 02/19] EDAC, altera: " Paul E. McKenney
2017-10-23 21:07 ` Paul E. McKenney
2017-10-23 21:07 ` [PATCH 03/19] firmware/ivc: " Paul E. McKenney
2017-10-23 21:07 ` Paul E. McKenney
2017-10-23 21:07 ` [PATCH 04/19] fs: dcache: " Paul E. McKenney
2017-10-23 21:07 ` Paul E. McKenney
2017-10-23 21:07 ` [PATCH 05/19] fs: ncpfs: " Paul E. McKenney
2017-10-23 21:07 ` [PATCH 06/19] media: dvb_ringbuffer: " Paul E. McKenney
2017-10-23 21:07 ` Paul E. McKenney
2017-10-23 21:07 ` [PATCH 07/19] net: netlink/netfilter: " Paul E. McKenney
2017-10-23 21:07 ` [PATCH 08/19] net/ipv4/tcp_input.c: " Paul E. McKenney
2017-10-23 21:07 ` Paul E. McKenney
2017-10-23 21:07 ` [PATCH 09/19] net: average: " Paul E. McKenney
2017-10-24 5:58 ` Johannes Berg
2017-10-24 5:58 ` Johannes Berg
2017-10-24 9:34 ` Ingo Molnar
2017-10-24 9:34 ` Ingo Molnar
2017-10-24 13:49 ` Paul E. McKenney
2017-10-23 21:07 ` [PATCH 10/19] samples: mic/mpssd/mpssd.c: " Paul E. McKenney
2017-10-23 21:07 ` [PATCH 11/19] selftests/powerpc: " Paul E. McKenney
2017-10-23 21:07 ` Paul E. McKenney
2017-10-23 21:07 ` [PATCH 12/19] workqueue: " Paul E. McKenney
2017-10-23 21:07 ` [PATCH 13/19] rcutorture: formal: Prepare for ACCESS_ONCE() removal Paul E. McKenney
2017-10-23 21:07 ` [PATCH 14/19] doc: filesystems: Kill off ACCESS_ONCE() Paul E. McKenney
2017-10-23 21:07 ` [PATCH 15/19] mm: " Paul E. McKenney
2017-10-23 21:07 ` [PATCH 16/19] linux/compiler.h: Split into compiler.h and compiler-types.h Paul E. McKenney
2017-10-23 21:07 ` Paul E. McKenney
2017-10-24 9:25 ` Ingo Molnar
2017-10-24 9:30 ` Will Deacon
2017-10-24 9:30 ` Will Deacon
2017-10-24 9:52 ` Ingo Molnar
2017-10-24 9:52 ` Ingo Molnar
2017-10-23 21:07 ` [PATCH 17/19] locking/barriers: Kill lockless_dereference Paul E. McKenney
2017-10-23 21:07 ` Paul E. McKenney
2017-10-24 9:31 ` Ingo Molnar
2017-10-24 9:31 ` Ingo Molnar
2017-10-24 9:44 ` Will Deacon
2017-10-24 9:44 ` Will Deacon
2017-10-24 9:54 ` Ingo Molnar
2017-10-24 9:54 ` Ingo Molnar
2017-10-24 10:23 ` Will Deacon
2017-10-23 21:07 ` [PATCH 18/19] alpha: atomics: Add smp_read_barrier_depends() to release/relaxed atomics Paul E. McKenney
2017-10-23 21:07 ` [PATCH 19/19] COCCINELLE: treewide: kill off ACCESS_ONCE() Paul E. McKenney
2017-10-24 9:32 ` [GIT PULL de-alpha] Make core code not need to know about Alpha for v4.15 Ingo Molnar
2017-10-24 9:32 ` Ingo Molnar
2017-10-25 8:45 ` Ingo Molnar
2017-10-25 8:54 ` Paul E. McKenney [this message]
2017-10-25 9:04 ` Ingo Molnar
2017-10-25 9:04 ` Ingo Molnar
2017-10-25 13:18 ` Paul E. McKenney
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