On Mon, Aug 17, 2020 at 9:09 AM Ezequiel Garcia wrote:
>
> This heap is basically a wrapper around DMA-API dma_alloc_attrs,
> which will allocate memory suitable for the given device.
>
> The implementation is mostly a port of the Contiguous Videobuf2
> memory allocator (see videobuf2/videobuf2-dm
On Tue, Sep 08, 2020 at 08:43:59AM +0300, Laurent Pinchart wrote:
> Hi Daniel,
>
> On Tue, Sep 01, 2020 at 09:32:22AM +0200, Daniel Vetter wrote:
> > On Sun, Aug 16, 2020 at 02:22:46PM -0300, Ezequiel Garcia wrote:
> > > This heap is basically a wrapper around DMA-API dma_alloc_attrs,
> > > which
Hi Daniel,
On Tue, Sep 01, 2020 at 09:32:22AM +0200, Daniel Vetter wrote:
> On Sun, Aug 16, 2020 at 02:22:46PM -0300, Ezequiel Garcia wrote:
> > This heap is basically a wrapper around DMA-API dma_alloc_attrs,
> > which will allocate memory suitable for the given device.
> >
> > The implementatio
On Sun, Aug 16, 2020 at 02:22:46PM -0300, Ezequiel Garcia wrote:
> This heap is basically a wrapper around DMA-API dma_alloc_attrs,
> which will allocate memory suitable for the given device.
>
> The implementation is mostly a port of the Contiguous Videobuf2
> memory allocator (see videobuf2/vide
Hi James,
On Sun, Aug 23, 2020 at 03:53:50PM -0700, James Jones wrote:
> On 8/23/20 1:46 PM, Laurent Pinchart wrote:
> > On Sun, Aug 23, 2020 at 01:04:43PM -0700, James Jones wrote:
> >> On 8/20/20 1:15 AM, Ezequiel Garcia wrote:
> >>> On Mon, 2020-08-17 at 20:49 -0700, James Jones wrote:
> O
Dear all,
Here are the notes we took during the BoF.
I believe the meeting was super interesting.
Although it felt a bit short for the topic,
we left with a few interesting ideas.
Thanks everyone!
Ezequiel
---
LPC 2020 BoF: Negotiating DMA-BUF Heaps
Attendees:
* Brian Starkey
* Daniel Stone
*
On Thursday, August 20, 2020 10:15 AM, Ezequiel Garcia
wrote:
> > I'm rather interested on where this goes, as I was toying with using
> > some sort of heap ID as a basis for a "device-local" constraint in the
> > memory constraints proposals Simon and I will be discussing at XDC this
> > year.
On Tuesday, August 25, 2020 10:26 PM, Nicolas Dufresne
wrote:
> > I don't think we can do this in a system-agnostic way. What I'd like to
> > see is an API for the kernel to expose opaque constraints for each
>
> Please, take into consideration that constraints can also come from
> userspace. Th
Le jeudi 20 août 2020 à 18:54 +0300, Laurent Pinchart a écrit :
> Hi Ezequiel,
>
> On Thu, Aug 20, 2020 at 05:36:40AM -0300, Ezequiel Garcia wrote:
> > Hi John,
> >
> > Thanks a ton for taking the time
> > to go thru this.
> >
> > On Mon, 2020-08-17 at 21:13 -0700, John Stultz wrote:
> > > On Su
On 8/23/20 1:46 PM, Laurent Pinchart wrote:
Hi James,
On Sun, Aug 23, 2020 at 01:04:43PM -0700, James Jones wrote:
On 8/20/20 1:15 AM, Ezequiel Garcia wrote:
On Mon, 2020-08-17 at 20:49 -0700, James Jones wrote:
On 8/17/20 8:18 AM, Brian Starkey wrote:
On Sun, Aug 16, 2020 at 02:22:46PM -030
Hi James,
On Sun, Aug 23, 2020 at 01:04:43PM -0700, James Jones wrote:
> On 8/20/20 1:15 AM, Ezequiel Garcia wrote:
> > On Mon, 2020-08-17 at 20:49 -0700, James Jones wrote:
> >> On 8/17/20 8:18 AM, Brian Starkey wrote:
> >>> On Sun, Aug 16, 2020 at 02:22:46PM -0300, Ezequiel Garcia wrote:
>
On 8/20/20 1:15 AM, Ezequiel Garcia wrote:
On Mon, 2020-08-17 at 20:49 -0700, James Jones wrote:
On 8/17/20 8:18 AM, Brian Starkey wrote:
Hi Ezequiel,
On Sun, Aug 16, 2020 at 02:22:46PM -0300, Ezequiel Garcia wrote:
This heap is basically a wrapper around DMA-API dma_alloc_attrs,
which will a
On Mon, 2020-08-17 at 20:49 -0700, James Jones wrote:
> On 8/17/20 8:18 AM, Brian Starkey wrote:
> > Hi Ezequiel,
> >
> > On Sun, Aug 16, 2020 at 02:22:46PM -0300, Ezequiel Garcia wrote:
> > > This heap is basically a wrapper around DMA-API dma_alloc_attrs,
> > > which will allocate memory suitabl
Hi Brian,
Thanks a lot for reviewing this patch.
I'm happy my humble proof-of-concept
is able to spark some interest and raise
some questions.
On Mon, 2020-08-17 at 16:18 +0100, Brian Starkey wrote:
> Hi Ezequiel,
>
> On Sun, Aug 16, 2020 at 02:22:46PM -0300, Ezequiel Garcia wrote:
> > This hea
Hi John,
Thanks a ton for taking the time
to go thru this.
On Mon, 2020-08-17 at 21:13 -0700, John Stultz wrote:
> On Sun, Aug 16, 2020 at 10:23 AM Ezequiel Garcia
> wrote:
> > This heap is basically a wrapper around DMA-API dma_alloc_attrs,
> > which will allocate memory suitable for the given
Hi Ezequiel,
On Thu, Aug 20, 2020 at 05:36:40AM -0300, Ezequiel Garcia wrote:
> Hi John,
>
> Thanks a ton for taking the time
> to go thru this.
>
> On Mon, 2020-08-17 at 21:13 -0700, John Stultz wrote:
> > On Sun, Aug 16, 2020 at 10:23 AM Ezequiel Garcia
> > wrote:
> > > This heap is basicall
Hi,
On Thu, Aug 20, 2020 at 09:07:29AM +0100, Ezequiel Garcia wrote:
> > For single-device allocations, would using the buffer allocation
> > functionality of that device's native API be better in most
> > cases? (Some other possibly relevant discussion at [1])
> >
>
> That may be true for exist
On Sun, Aug 16, 2020 at 10:23 AM Ezequiel Garcia wrote:
>
> This heap is basically a wrapper around DMA-API dma_alloc_attrs,
> which will allocate memory suitable for the given device.
>
> The implementation is mostly a port of the Contiguous Videobuf2
> memory allocator (see videobuf2/videobuf2-d
On 8/17/20 8:18 AM, Brian Starkey wrote:
Hi Ezequiel,
On Sun, Aug 16, 2020 at 02:22:46PM -0300, Ezequiel Garcia wrote:
This heap is basically a wrapper around DMA-API dma_alloc_attrs,
which will allocate memory suitable for the given device.
The implementation is mostly a port of the Contiguou
Hi Ezequiel,
On Sun, Aug 16, 2020 at 02:22:46PM -0300, Ezequiel Garcia wrote:
> This heap is basically a wrapper around DMA-API dma_alloc_attrs,
> which will allocate memory suitable for the given device.
>
> The implementation is mostly a port of the Contiguous Videobuf2
> memory allocator (see
This heap is basically a wrapper around DMA-API dma_alloc_attrs,
which will allocate memory suitable for the given device.
The implementation is mostly a port of the Contiguous Videobuf2
memory allocator (see videobuf2/videobuf2-dma-contig.c)
over to the DMA-BUF Heap interface.
The intention of t
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