linux-kernel - Re: STT_FUNC for assembler checksum and semaphore ops" in git-x86

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Message-ID: <20080110074201.GA12585@uranus.ravnborg.org>
Date:	Thu, 10 Jan 2008 08:42:01 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	jreiser@...Wagon.com, mingo@...e.hu, tglx@...utronix.de,
	linux-kernel@...r.kernel.org
Subject: Re: STT_FUNC for assembler checksum and semaphore ops" in git-x86

On Wed, Jan 09, 2008 at 10:57:25PM +0100, Andi Kleen wrote:
> 
> In gitx86:
> 
> commit 692effca950d7c6032e8e2ae785a32383e7af4a3
> Author: John Reiser <jreiser@...Wagon.com>
> Date:   Wed Jan 9 13:31:12 2008 +0100
> 
>     STT_FUNC for assembler checksum and semaphore ops
> ...
>     Comments?
>     
>     Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
>     Signed-off-by: Ingo Molnar <mingo@...e.hu>
> 
> diff --git a/arch/x86/lib/checksum_32.S b/arch/x86/lib/checksum_32.S
> index adbccd0..1f9aacb 100644
> --- a/arch/x86/lib/checksum_32.S
> +++ b/arch/x86/lib/checksum_32.S
> @@ -48,6 +48,7 @@ unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum)
>            * Fortunately, it is easy to convert 2-byte alignment to 4-byte
>            * alignment for the unrolled loop.
>            */           
> +       .type csum_partial, @function
>  ENTRY(csum_partial)
> +       .type csum_partial, @function
>  ENTRY(csum_partial)
>         CFI_STARTPROC
>         pushl %esi
> @@ -141,11 +142,13 @@ ENTRY(csum_partial)
>         ret
>         CFI_ENDPROC
>  ENDPROC(csum_partial)
> +       .size csum_partial, . - csum_partial
> 
> AK:
> Better option would be to just add to ENTRY/ENDPROC
> 
> do something like (untested) 
> 
> #define ENTRY(x) \
> 	...
> 	.set curfunc, x
> 
> #define ENDPROC(x) \
> 	...
> 	.size x - curfunc
> 
John got more or less same comment from me - but
I did not hear further.
As it stands out now it not nice.

	Sam
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