linux-kernel - Re: [PATCH] WIP! media: uvcvideo: Use dma_alloc

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Message-ID: <20201124133315.GA30214@lst.de>
Date:   Tue, 24 Nov 2020 14:33:15 +0100
From:   Christoph Hellwig <hch@....de>
To:     Ricardo Ribalda <ribalda@...omium.org>
Cc:     Christoph Hellwig <hch@....de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        IOMMU DRIVERS <iommu@...ts.linux-foundation.org>,
        Joerg Roedel <joro@...tes.org>,
        Robin Murphy <robin.murphy@....com>,
        Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        Tomasz Figa <tfiga@...omium.org>,
        Sergey Senozhatsky <senozhatsky@...gle.com>
Subject: Re: [PATCH] WIP! media: uvcvideo: Use dma_alloc_noncontiguos API

On Tue, Nov 24, 2020 at 01:01:33PM +0100, Ricardo Ribalda wrote:
> I was hoping that you could answer that question :).
> 
> Do you have other use-cases than linux-media in mind?
> 
> I think Sergey wants to experiment also with vb2, to figure out how
> much it affects it.
> His change will be much more complicated than mine thought, there are
> more cornercases there.

I don't have anything urgend lined up, although I think there are plenty
other potential use cases.

> > Can you respost a combined series to get started?
> 
> Sure. Shall I also include the profiling patch?

That is in the media code, right?  I don't really care too much.