linux-kernel - Re: [PATCH 02/10] lib: genalloc: Generic allocator improvements

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Date:	Fri, 10 Jun 2011 19:16:45 +0200
From:	"Michal Nazarewicz" <mina86@...a86.com>
To:	"Marek Szyprowski" <m.szyprowski@...sung.com>,
	"Alan Cox" <alan@...rguk.ukuu.org.uk>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-media@...r.kernel.org, linux-mm@...ck.org,
	linaro-mm-sig@...ts.linaro.org,
	"'Kyungmin Park'" <kyungmin.park@...sung.com>,
	"'Andrew Morton'" <akpm@...ux-foundation.org>,
	"'KAMEZAWA Hiroyuki'" <kamezawa.hiroyu@...fujitsu.com>,
	"'Ankita Garg'" <ankita@...ibm.com>,
	"'Daniel Walker'" <dwalker@...eaurora.org>,
	"'Johan MOSSBERG'" <johan.xx.mossberg@...ricsson.com>,
	"'Mel Gorman'" <mel@....ul.ie>, "'Arnd Bergmann'" <arnd@...db.de>,
	"'Jesse Barker'" <jesse.barker@...aro.org>
Subject: Re: [PATCH 02/10] lib: genalloc: Generic allocator improvements

On Fri, 10 Jun 2011 14:52:17 +0200, Alan Cox <alan@...rguk.ukuu.org.uk>  
wrote:

>> I plan to replace it with lib/bitmap.c bitmap_* based allocator  
>> (similar like
>> it it is used by dma_declare_coherent_memory() and friends in
>> drivers/base/dma-coherent.c). We need something really simple for CMA  
>> area
>> management.
>>
>> IMHO allocate_resource and friends a bit too heavy here, but good to  
>> know
>> that such allocator also exists.
>
> Not sure I'd class allocate_resource as heavyweight but providing it's
> using something that already exists rather than inventing yet another
> allocator.

genalloc is already in the kernel and is used in a few places, so we
either let everyone use it as they see fit or we deprecate the library.
If we don't deprecate it I see no reason why CMA should not use it.

-- 
Best regards,                                         _     _
.o. | Liege of Serenely Enlightened Majesty of      o' \,=./ `o
..o | Computer Science,  Michal "mina86" Nazarewicz    (o o)
ooo +-----<email/xmpp: mnazarewicz@...gle.com>-----ooO--(_)--Ooo--
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