From: Matt Mackall <mpm@selenic.com>
To: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Anvin" <hpa@zytor.com>,
Linux-tiny@selenic.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Configure out DMI scanning code
Date: Mon, 11 Feb 2008 13:01:18 -0600 [thread overview]
Message-ID: <1202756478.28085.35.camel@cinder.waste.org> (raw)
In-Reply-To: <20080211175844.3358a49b@crazy>
On Mon, 2008-02-11 at 17:58 +0100, Thomas Petazzoni wrote:
> Hi,
>
> The enclosed patch allows to remove the DMI scanning code when
> CONFIG_EMBEDDED is defined. It's basically the dma_blacklist patch of
> Linux-Tiny ported to 2.6.25-rc1, with the required modifications. It
> allows to remove ~10k from the kernel code/data size.
Looks ok. Please preserve original authorship (ie me) in some fashion in
your description.
> On top of this patch, I've tested if removing the big dmi tables in the
> code (for example in arch/x86/kernel/reboot.c) would allow to make more
> space optimizations. However, it seems that simply defining
> dmi_check_system() to an empty static inlined function already allows
> gcc to optimize out the dmi tables, because there are not present in
> the code. Is that possible, or is my understanding incorrect ?
That's possible with modern gccs, yes.
--
Mathematics is the supreme nostalgia of our time.
next prev parent reply other threads:[~2008-02-11 19:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-11 16:58 Thomas Petazzoni
2008-02-11 19:01 ` Matt Mackall [this message]
2008-02-12 7:33 ` Thomas Petazzoni
2008-02-12 7:42 ` Andrew Morton
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