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From: Thierry Reding <thierry.reding@gmail.com>
To: Thomas Hellstrom <thellstrom@vmware.com>
Cc: linaro-mm-sig@lists.linaro.org,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC] dma-buf: Implement test module
Date: Sat, 14 Dec 2013 13:39:13 +0100	[thread overview]
Message-ID: <20131214123912.GF17467@mithrandir> (raw)
In-Reply-To: <52AA0FC4.3090606@vmware.com>


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On Thu, Dec 12, 2013 at 08:34:28PM +0100, Thomas Hellstrom wrote:
> On 12/12/2013 03:36 PM, Thierry Reding wrote:
> >This is a simple test module that can be used to allocate, export and
> >delete DMA-BUF objects. It can be used to test DMA-BUF sharing in
> >systems that lack a real second driver.
> >
> >
> 
> Looks nice. I wonder whether this could be extended to create a "streaming"
> dma-buf from a user space mapping. That could be used as a generic way to
> implement streaming (user) buffer objects, rather than to add explicit
> support for those in, for example, TTM.

I'm somewhat reluctant to beef this up needlessly to prevent it from
being used for purposes other than testing.

Thierry

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WARNING: multiple messages have this Message-ID (diff)
From: Thierry Reding <thierry.reding@gmail.com>
To: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Sumit Semwal <sumit.semwal@linaro.org>,
	linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org,
	dri-devel@lists.freedesktop.org
Subject: Re: [RFC] dma-buf: Implement test module
Date: Sat, 14 Dec 2013 13:39:13 +0100	[thread overview]
Message-ID: <20131214123912.GF17467@mithrandir> (raw)
In-Reply-To: <52AA0FC4.3090606@vmware.com>

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On Thu, Dec 12, 2013 at 08:34:28PM +0100, Thomas Hellstrom wrote:
> On 12/12/2013 03:36 PM, Thierry Reding wrote:
> >This is a simple test module that can be used to allocate, export and
> >delete DMA-BUF objects. It can be used to test DMA-BUF sharing in
> >systems that lack a real second driver.
> >
> >
> 
> Looks nice. I wonder whether this could be extended to create a "streaming"
> dma-buf from a user space mapping. That could be used as a generic way to
> implement streaming (user) buffer objects, rather than to add explicit
> support for those in, for example, TTM.

I'm somewhat reluctant to beef this up needlessly to prevent it from
being used for purposes other than testing.

Thierry

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  parent reply	other threads:[~2013-12-14 12:39 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-12 14:36 [RFC] dma-buf: Implement test module Thierry Reding
2013-12-12 14:36 ` Thierry Reding
2013-12-12 14:42 ` Thierry Reding
2013-12-12 14:42   ` Thierry Reding
2013-12-13  2:02   ` Greg Kroah-Hartman
2013-12-14 12:32     ` Thierry Reding
2013-12-14 12:32       ` Thierry Reding
2014-03-25 16:17     ` Thierry Reding
2014-03-25 18:01       ` Sam Ravnborg
2014-03-26  8:32         ` Thierry Reding
2014-03-26  8:32           ` Thierry Reding
2014-07-10  9:55           ` Thierry Reding
2014-07-11 20:33             ` Sam Ravnborg
2013-12-12 14:53 ` Daniel Vetter
2013-12-12 14:53   ` Daniel Vetter
2013-12-12 15:08   ` Thierry Reding
2013-12-12 15:08     ` Thierry Reding
2013-12-12 19:34 ` Thomas Hellstrom
2013-12-12 19:34   ` Thomas Hellstrom
2013-12-12 22:30   ` Daniel Vetter
2013-12-12 22:30     ` Daniel Vetter
2013-12-14 12:37     ` Thierry Reding
2013-12-14 12:37       ` Thierry Reding
2013-12-14 12:47       ` Thomas Hellstrom
2013-12-14 12:47         ` Thomas Hellstrom
2013-12-14 13:02         ` Rob Clark
2013-12-14 13:10           ` Thomas Hellstrom
2013-12-14 13:10             ` Thomas Hellstrom
2013-12-14 16:05       ` Daniel Vetter
2013-12-14 16:05         ` Daniel Vetter
2013-12-14 12:39   ` Thierry Reding [this message]
2013-12-14 12:39     ` Thierry Reding
2013-12-13  2:04 ` Greg Kroah-Hartman
2013-12-14 12:16   ` Thierry Reding
2013-12-14 12:16     ` Thierry Reding
2013-12-14 17:42     ` Daniel Vetter
2013-12-14 17:42       ` Daniel Vetter
2013-12-14 19:26     ` Greg Kroah-Hartman

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