Date: Wed, 4 Aug 2010 16:59:48 +0800
From: Yong Zhang <yong.zhang@windriver.com>
To: Ryan Wang <openspace.wang@gmail.com>
Cc: kernelnewbies@nl.linux.org, linux-kernel@vger.kernel.org,
        linux-mm@kvack.org
Subject: Re: question about CONFIG_BASE_SMALL
Message-ID: <20100804085948.GA21549@windriver.com>
Reply-To: Yong Zhang <yong.zhang@windriver.com>
References: <AANLkTi=1DxqLrqVbfRouOBRWg4RHFaHz438X7F1JWL6P@mail.gmail.com>
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On Wed, Aug 04, 2010 at 04:38:12PM +0800, Ryan Wang wrote:
> Hi all,
> 
>       I noticed CONFIG_BASE_SMALL in different parts
> of the kernel code, with ifdef/ifndef.
>       I wonder what does CONFIG_BASE_SMALL mean?
> And how can I configure it, e.g. through make menuconfig?

Yeah, here:

init/Kconfig:
...
config BASE_SMALL
	int
	default 0 if BASE_FULL
	default 1 if !BASE_FULL
...
config BASE_FULL
	default y
	bool "Enable full-sized data structures for core" if EMBEDDED
	help
	  Disabling this option reduces the size of miscellaneous core
	  kernel data structures. This saves memory on small machines,

> 
> thanks,
> --
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