linux-kernel - Re: [PATCH -v4 00/08] use lmb with x86

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Message-ID: <4BAA5A7B.8040508@kernel.org>
Date:	Wed, 24 Mar 2010 11:31:23 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Miller <davem@...emloft.net>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH -v4 00/08] use lmb with x86

On 03/24/2010 03:48 AM, Ingo Molnar wrote:
> 
> * Yinghai Lu <yinghai@...nel.org> wrote:
> 
>> new early_res is lmb extension. and it could be used to replace bootmem.
> 
> Why not do what we suggested: extend lmb.c to also offer the 
> early_res-equivalent functionality, and remove kernel/early_res.c and move 
> lib/lmb.c to mm/lmb.c?
> 
> We dont want two facilities (early_res and lmb) really ...

the new early_res.c is extension to lmb.

it will
1. add find_lmb_area
2. add check_double_region array with find_lmb_area
3. free_early and reserve_early is wrapper for lmb_free, and lmb_reserve with array size checking
4. some other generizing function like lmb_register_active_regions and lmb_hole_size that could be all lmb users.

so it is seperated file at point.

if lmb guys are happy, we can merge early_res.c and lmb.c. just put them in one file.

Thanks

Yinghai
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