linux-kernel - Re: [RFC][PATCH] CMA: drivers/base/Kconfig: restrict CMA size to non-zero value

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Message-ID: <xa1t4n0k1fm1.fsf@mina86.com>
Date:	Tue, 20 May 2014 08:15:18 -1000
From:	Michal Nazarewicz <mina86@...a86.com>
To:	Gioh Kim <gioh.kim@....com>, Joonsoo Kim <iamjoonsoo.kim@....com>
Cc:	Minchan Kim <minchan.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	Laura Abbott <lauraa@...eaurora.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Heesub Shin <heesub.shin@...sung.com>,
	Mel Gorman <mgorman@...e.de>,
	Johannes Weiner <hannes@...xchg.org>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	이건호 <gunho.lee@....com>, gurugio@...il.com
Subject: Re: [RFC][PATCH] CMA: drivers/base/Kconfig: restrict CMA size to non-zero value

On Mon, May 19 2014, Gioh Kim wrote:
> My point is atomic_pool should be able to work with/without CMA.

Agreed.

>> IMO, cma=0 command line argument should be supported, as should having
>> the default CMA size zero.  If CMA size is set to zero, kernel should
>> behave as if CMA was not enabled at compile time.

> It's also good if atomic_pool can work well with zero CMA size.

Exactly.

-- 
Best regards,                                         _     _
.o. | Liege of Serenely Enlightened Majesty of      o' \,=./ `o
..o | Computer Science,  Michał “mina86” Nazarewicz    (o o)
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