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

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Message-ID: <20160518173341.GF3206@twins.programming.kicks-ass.net>
Date:	Wed, 18 May 2016 19:33:41 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	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, dwmw2@...radead.org
Subject: Re: [RFC PATCH 03/15] Provide atomic_t functions implemented with
 ISO-C++11 atomics

On Wed, May 18, 2016 at 04:10:59PM +0100, David Howells wrote:
> +/**
> + * atomic_fetch_or - perform *v |= mask and return old value of *v
> + * @v: pointer to atomic_t
> + * @mask: mask to OR on the atomic_t
> + */
> +static inline int atomic_fetch_or(atomic_t *v, int mask)
> +{
> +	return __atomic_fetch_or(&v->counter, mask, __ATOMIC_SEQ_CST);
> +}

We just merged a patch flipping those arguments; also I suppose you've
seen my larger atomic*_fetch_*() patch set?