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

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Message-ID: <alpine.LNX.2.00.1406161320180.1321@pobox.suse.cz>
Date:	Mon, 16 Jun 2014 13:20:49 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Andreas Schwab <schwab@...e.de>
cc:	Dan Carpenter <dan.carpenter@...cle.com>,
	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, 16 Jun 2014, Andreas Schwab wrote:

> > 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.

How reliable is this format across GCC versions? GCC manpage doesn't seem 
to list it as a valid alternative.

-- 
Jiri Kosina
SUSE Labs
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