linux-kernel - Re: [RFC][PATCH 0/5] arch: atomic rework

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Message-ID: <CA+55aFy0SPge-z9TbaLF2yxLffVTviv_WhhbkXsB5mMA9d9iaQ@mail.gmail.com>
Date:	Sun, 9 Feb 2014 17:24:14 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Torvald Riegel <triegel@...hat.com>
Cc:	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Will Deacon <will.deacon@....com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ramana Radhakrishnan <Ramana.Radhakrishnan@....com>,
	David Howells <dhowells@...hat.com>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"mingo@...nel.org" <mingo@...nel.org>,
	"gcc@....gnu.org" <gcc@....gnu.org>
Subject: Re: [RFC][PATCH 0/5] arch: atomic rework

On Sun, Feb 9, 2014 at 5:16 PM, Torvald Riegel <triegel@...hat.com> wrote:
>
> (a) seems to say that you don't like requiring programmers to mark
> atomic accesses specially.  Is that the case?

In Paul's example, they were marked specially.

And you seemed to argue that Paul's example could possibly return
anything but 0/0.

If you really think that, I hope to God that you have nothing to do
with the C standard or any actual compiler I ever use.

Because such a standard or compiler would be shit. It's sadly not too uncommon.

             Linus
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