linux-kernel - Re: [PATCH v6 0/5] dma-mapping: Patches for speeding up allocation

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Date:	Tue, 26 Jan 2016 19:39:20 -0500
From:	Doug Anderson <dianders@...omium.org>
To:	Russell King <linux@....linux.org.uk>,
	Robin Murphy <robin.murphy@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...db.de>
Cc:	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Tomasz Figa <tfiga@...omium.org>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Pawel Osciak <pawel@...iak.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Christoph Hellwig <hch@...radead.org>, k.debski@...sung.com,
	Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
	Jonathan Corbet <corbet@....net>, mike.looijmans@...ic.nl,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	Will Deacon <will.deacon@....com>, jtp.park@...sung.com,
	penguin-kernel@...ove.sakura.ne.jp,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Carlo Caione <carlo@...one.org>, linux-media@...r.kernel.org,
	Dan Williams <dan.j.williams@...el.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v6 0/5] dma-mapping: Patches for speeding up allocation

Hi,

On Tue, Jan 26, 2016 at 3:59 PM, Andrew Morton
<akpm@...ux-foundation.org> wrote:
> On Mon, 11 Jan 2016 09:30:22 -0800 Douglas Anderson <dianders@...omium.org> wrote:
>
>> This series of patches will speed up memory allocation in dma-mapping
>> quite a bit.
>
> This is pretty much all ARM and driver stuff so I think I'll duck it.
> But I can merge it if nobody else feels a need to.

I was going to ask what the next steps were for this series.
Presumably I could post the patch to Russell's patch tracker if folks
want me to do that.  Alternatively it could go through the ARM-SOC
tree?


> I saw a few acked-by/tested-by/etc from the v5 posting which weren't
> carried over into v6 (might have been a timing race), so please fix
> that up if there's an opportunity.

Right.  Both Robin and Tomasz gave their Reviewed-by to Patch #1 in v5
even after v6 was posted.


> Regarding the new DMA_ATTR_ALLOC_SINGLE_PAGES hint: I suggest adding
> "DMA_ATTR_ALLOC_SINGLE_PAGES is presently implemented only on ARM" to
> the docs.  Or perhaps have a shot at implementing it elsewhere.

Warning sounds good.


> Typo in 4/5 changelog: "reqiurements"

Thanks for catching!


I'm happy to post up a v6 with these things fixed or I'm happy for
whoever is applying it to make these small fixes themselves.  Any
volunteers?  Olof, Arnd, or Russell: any of you want these patches?


-Doug