linux-kernel - Re: increasing memory alloted for 'init' during kernel boot.

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Message-ID: <AANLkTiniKYm7krr1j48VbV7oNDA7YKXzTnuCZ9kOMnUs@mail.gmail.com>
Date:	Tue, 31 Aug 2010 14:13:29 +0530
From:	Prabhu Chawandi <prabhu.chavandi@...il.com>
To:	Jiri Slaby <jirislaby@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org,
	listar@...linux.org
Subject: Re: increasing memory alloted for 'init' during kernel boot.

Hi ,

Thanks for the info...

Problem I am facing is, I have two bootloaders, when I boot from one
loader booting happens properly.

but when I try to load from other loader, kernel does not boot, it
crashes. When i saw the boot logs, I saw that I memory allocated to
'init' section in case of crash is short by almost 5MB to the normal
boot log.

I am using mips processor.

Any idea, why this might be happening ?

thanks,
Prabhu

On Tue, Aug 31, 2010 at 1:52 PM, Jiri Slaby <jirislaby@...il.com> wrote:
> On 08/31/2010 08:49 AM, Prabhu Chawandi wrote:
>> Hi all,
>>
>>    Whenever the kernel starts booting, I am getting the bellow log :
>>
>> Memory: 110080k/262144k available (2566k kernel code, 151952k
>> reserved, 561k data, 15328k init, 0k highmem).
>>
>> For 'init' on what bases this amount of memory is decided ?
>>
>> Anyways I can alter it?
>
> Nope. It's code and data inside .init, .exit and similar sections. Those
> are marked by __init, __exit etc. in the code. This memory is freed
> after the kernel is up and running, since this memory (code and data) is
> not needed anymore.
>
> regards,
> --
> js
>
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