linux-kernel - Re: [RFC PATCH 03/15] Provide atomic_t functions implemented with ISO-C++11 atomics

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Message-ID: <1463643409.6885.5.camel@infradead.org>
Date:	Thu, 19 May 2016 08:36:49 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	Peter Zijlstra <peterz@...radead.org>,
	David Howells <dhowells@...hat.com>
Cc:	linux-arch@...r.kernel.org, x86@...nel.org, will.deacon@....com,
	linux-kernel@...r.kernel.org, ramana.radhakrishnan@....com,
	paulmck@...ux.vnet.ibm.com
Subject: Re: [RFC PATCH 03/15] Provide atomic_t functions implemented with
 ISO-C++11 atomics

On Wed, 2016-05-18 at 19:32 +0200, Peter Zijlstra wrote:
> 
> Does this generate 'sane' code for LL/SC archs? That is, a single LL/SC
> loop and not a loop around an LL/SC cmpxchg.

The whole point of using compiler intrinsics and letting the compiler
actually see what's going on... is that it bloody well should :)

-- 
dwmw2


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