linux-kernel - Re: [PATCH 7/10] compiler{,-gcc4}.h: Introduce _

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Message-ID: <20120929002626.GD13907@jtriplet-mobl1>
Date:	Fri, 28 Sep 2012 17:26:26 -0700
From:	Josh Triplett <josh@...htriplett.org>
To:	Daniel Santos <daniel.santos@...ox.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andi Kleen <ak@...ux.intel.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christopher Li <sparse@...isli.org>,
	David Daney <david.daney@...ium.com>,
	David Howells <dhowells@...hat.com>,
	Joe Perches <joe@...ches.com>,
	Konstantin Khlebnikov <khlebnikov@...nvz.org>,
	linux-sparse@...r.kernel.org,
	Michel Lespinasse <walken@...gle.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Pavel Pisa <pisa@....felk.cvut.cz>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH 7/10] compiler{,-gcc4}.h: Introduce __flatten function
 attribute

On Fri, Sep 28, 2012 at 06:20:08PM -0500, Daniel Santos wrote:
> --- a/include/linux/compiler-gcc4.h
> +++ b/include/linux/compiler-gcc4.h
> @@ -15,7 +15,12 @@
>  
>  #if GCC_VERSION >= 40102
>  # define __compiletime_object_size(obj) __builtin_object_size(obj, 0)
> -#endif
> +
> +/* flatten introduced in 4.1, but broken in 4.6.0 (gcc bug #48731)*/
> +# if GCC_VERSION != 40600
> +#  define __flatten __attribute__((flatten))
> +# endif
> +#endif /* GCC_VERSION >= 40102 */

Same comment as before: why 40102 rather than 40100?

- Josh Triplett
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