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From: Sam Ravnborg <sam@ravnborg.org>
To: Adrian Bunk <bunk@stusta.de>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: [2.6 patch] remove the CONFIG_CC_ALIGN_* options
Date: Tue, 21 Feb 2006 18:56:40 +0100	[thread overview]
Message-ID: <20060221175640.GB9070@mars.ravnborg.org> (raw)
In-Reply-To: <20060220223654.GR4661@stusta.de>

On Mon, Feb 20, 2006 at 11:36:54PM +0100, Adrian Bunk wrote:
> I don't see any use case for the CONFIG_CC_ALIGN_* options:
> - they are only available if EMBEDDED
> - people using EMBEDDED will most likely also enable 
>   CC_OPTIMIZE_FOR_SIZE
> - the default for -Os is to disable alignment
> 
> In case someone is doing performance comparisons and discovers that the
> default settings gcc chooses aren't good, the only sane thing is to
> discuss whether it makes sense to change this, not through offering 
> options to change this locally.

I leave it to other to judge if this is wortwhile or not - I have no
numbers to back up either with or without.
It is though a nice cleaning effort in the Makefile.

But if we back-out this then cc-option-aling should go as well,
including description in Documentation/kbuild/makefiles.txt

	Sam

  reply	other threads:[~2006-02-21 17:56 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-02-20 22:36 Adrian Bunk
2006-02-21 17:56 ` Sam Ravnborg [this message]
2006-02-21 18:44   ` Adrian Bunk
2006-02-21 19:08     ` Sam Ravnborg

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