linux-kernel - Re: [PATCH] tell gcc optimizer to never introduce new data races

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Message-ID: <20140616143703.GF5099@sirena.org.uk>
Date:	Mon, 16 Jun 2014 15:37:03 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Andreas Schwab <schwab@...e.de>
Cc:	Dan Carpenter <dan.carpenter@...cle.com>,
	Jiri Kosina <jkosina@...e.cz>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Martin Jambor <mjambor@...e.cz>, Petr Mladek <pmladek@...e.cz>,
	linux-kernel@...r.kernel.org, gcc@....gnu.org,
	linux-sparse@...r.kernel.org
Subject: Re: [PATCH] tell gcc optimizer to never introduce new data races

On Mon, Jun 16, 2014 at 12:52:10PM +0200, Andreas Schwab wrote:
> Dan Carpenter <dan.carpenter@...cle.com> writes:

> > Adding "--param allow-store-data-races=0" to the GCC options for the
> > kernel breaks C=1 because Sparse isn't expecting a GCC option with that
> > format.

> Please try --param=allow-store-data-races=0 instead.

That appears to work for me.

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