linux-kernel - Re: [RFC][PATCHv2 09/12] videobuf2: let user-space know if driver supports cache hints

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Message-ID: <b92457b8-0a74-c147-aa98-af5a8e13f0a6@xs4all.nl>
Date:   Wed, 19 Feb 2020 09:56:42 +0100
From:   Hans Verkuil <hverkuil@...all.nl>
To:     Sergey Senozhatsky <senozhatsky@...omium.org>
Cc:     Hans Verkuil <hans.verkuil@...co.com>,
        Tomasz Figa <tfiga@...omium.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Sakari Ailus <sakari.ailus@....fi>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Pawel Osciak <posciak@...omium.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCHv2 09/12] videobuf2: let user-space know if driver
 supports cache hints

On 2/19/20 9:45 AM, Sergey Senozhatsky wrote:
> On (20/02/19 09:33), Hans Verkuil wrote:
>> On 2/4/20 3:56 AM, Sergey Senozhatsky wrote:
>>> Add V4L2_BUF_CAP_SUPPORTS_CACHE_HINTS to fill_buf_caps(), which
>>> is set when queue supports user-space cache management hints.
>>
>> Ah, you add the capability here :-)
>>
>> This should be moved forward in the series. Actually, I think this should
>> be merged with the first patch of the series.
> 
> OK, can squash. This way I don't have to split 03/12.
> 
> I can also update V4L2_BUF_FLAG_NO_CACHE_INVALIDATE/CLEAN in 01/12 then.
> Would that work?

Yes, that makes sense.

	Hans

> 
> 	-ss
>