linux-kernel - Re: [PATCH 0/3] sched/locking/doc: Miscellaneous fixes

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Date:   Fri, 6 Jul 2018 00:28:12 +0200
From:   Andrea Parri <andrea.parri@...rulasolutions.com>
To:     linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Will Deacon <will.deacon@....com>,
        Alan Stern <stern@...land.harvard.edu>,
        Boqun Feng <boqun.feng@...il.com>,
        Nicholas Piggin <npiggin@...il.com>,
        David Howells <dhowells@...hat.com>,
        Jade Alglave <j.alglave@....ac.uk>,
        Luc Maranget <luc.maranget@...ia.fr>,
        "Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>,
        Akira Yokosawa <akiyks@...il.com>,
        Daniel Lustig <dlustig@...dia.com>,
        Jonathan Corbet <corbet@....net>,
        Randy Dunlap <rdunlap@...radead.org>
Subject: Re: [PATCH 0/3] sched/locking/doc: Miscellaneous fixes

On Thu, Jun 28, 2018 at 12:41:17PM +0200, Andrea Parri wrote:
> Hi,
> 
> This is a follow-up on the discussion started in [1].
> 
> Applies on -rcu/dev.
> 
> Cheers,
>   Andrea
> 
> [1] http://lkml.kernel.org/r/1529918258-7295-1-git-send-email-andrea.parri@amarulasolutions.com
> 
> Andrea Parri (3):
>   sched: Use smp_mb() in wake_woken_function()
>   locking: Clarify requirements for smp_mb__after_spinlock()
>   doc: Update wake_up() & co. memory-barrier guarantees

What is the plan for this series?

We are currently discussing locking changes that might affect 2/3, but
I'd still consider this patch and the overall series as an improvement
over the current status (1/3 is a fix to the code) and I'd really like
future changes to be based on this series...

I expected this series to go via "-rcu -> tip -> ..."; 2/3 had Peter's
Ack, but 1/3 and 3/3 are missing any comments (or tags): please let me
know if any action on the series is required from me (the series still
applies on the latest "dev" branch of -rcu).

  Andrea


> 
>  Documentation/memory-barriers.txt | 43 ++++++++++++++++++------------
>  include/linux/sched.h             |  4 +--
>  include/linux/spinlock.h          | 25 ++----------------
>  kernel/sched/completion.c         |  8 +++---
>  kernel/sched/core.c               | 30 +++++++++------------
>  kernel/sched/wait.c               | 55 ++++++++++++++++++---------------------
>  6 files changed, 72 insertions(+), 93 deletions(-)
> 
> -- 
> 2.7.4
>