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Date: Fri, 28 Sep 2012 17:26:26 -0700
From: Josh Triplett <josh@joshtriplett.org>
To: Daniel Santos <daniel.santos@pobox.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Andi Kleen <ak@linux.intel.com>,
        Andrea Arcangeli <aarcange@redhat.com>,
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        Pavel Pisa <pisa@cmp.felk.cvut.cz>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [PATCH 7/10] compiler{,-gcc4}.h: Introduce __flatten function
 attribute
Message-ID: <20120929002626.GD13907@jtriplet-mobl1>
References: <1348874411-28288-1-git-send-email-daniel.santos@pobox.com>
 <1348874411-28288-8-git-send-email-daniel.santos@pobox.com>
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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