linux-kernel - Re: [PATCH 2/2] x86 : relocate uninitialized variable in init DATA section into init BSS section

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Date:	Thu, 21 Feb 2008 17:28:26 +0800
From:	"Huang, Ying" <ying.huang@...el.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>, Andi Kleen <ak@...e.de>,
	Ian Campbell <ijc@...lion.org.uk>,
	Matt Mackall <mpm@...enic.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] x86 : relocate uninitialized variable in init DATA
	section into init BSS section

On Thu, 2008-02-21 at 10:05 +0100, Ingo Molnar wrote:
> * Huang, Ying <ying.huang@...el.com> wrote:
> 
> > Uninitialized variable in init DATA sections are relocated into init 
> > BSS sections to reduce kernel image size. Several KB can be reduced.
> 
> > -int __initdata early_ioremap_debug;
> > +int __initbss early_ioremap_debug;
> 
> will we get some sort of build error if we accidentally do:
> 
>    int __initbss early_ioremap_debug = 1;
> 
> ?

I tested it just now, and there is no build error.

Best Regards,
Huang Ying
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