linux-kernel - Re: [PATCH] refcount: provide same memory ordering guarantees as in atomic

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Date:   Mon, 13 Nov 2017 05:19:26 -0800
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     "Reshetova, Elena" <elena.reshetova@...el.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "keescook@...omium.org" <keescook@...omium.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "ishkamiel@...il.com" <ishkamiel@...il.com>,
        Will Deacon <will.deacon@....com>,
        "stern@...land.harvard.edu" <stern@...land.harvard.edu>,
        "parri.andrea@...il.com" <parri.andrea@...il.com>,
        "boqun.feng@...il.com" <boqun.feng@...il.com>,
        "dhowells@...hat.com" <dhowells@...hat.com>,
        "david@...morbit.com" <david@...morbit.com>
Subject: Re: [PATCH] refcount: provide same memory ordering guarantees as in
 atomic_t

On Mon, Nov 13, 2017 at 09:09:57AM +0000, Reshetova, Elena wrote:
> <snip>
> 
> > Note that there's work done on better documents and updates to this one.
> > One document that might be good to read (I have not in fact had time to
> > read it myself yet :-():
> > 
> >   https://github.com/aparri/memory-
> > model/blob/master/Documentation/explanation.txt
> 
> I have just finished reading over this and must say that this is excellent. 
> If I would have started reading on this topic from this doc and then move
> to other in-tree docs, including memory-barriers.txt, I would
> have had much less issues/questions and it would be much less of a bumpy
> read. 

Glad you like it!  May we have your Acked-by?

> Is there any plan to include it into official kernel doc tree? I really think it
> would be very helpful for others also even basically to explain the notations, properties 
> and language people talk about these issues and give examples. 

Yes, we do plan to submit it for inclusion.

							Thanx, Paul

> I will try to improve a bit the new doc I have previously sent a patch for in the 
> spirit of this reading. 
> 
> 
> Best Regards,
> Elena.
>