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From: Jerome Glisse <jglisse@redhat.com>
To: John Stultz <john.stultz@linaro.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
	Greg KH <gregkh@linuxfoundation.org>,
	Chenbo Feng <fengc@google.com>,
	Alistair Strachan <astrachan@google.com>,
	Liam Mark <lmark@codeaurora.org>,
	dri-devel@lists.freedesktop.org, "Andrew F . Davis" <afd@ti.com>
Subject: Re: [RFC][PATCH 0/5 v2] DMA-BUF Heaps (destaging ION)
Date: Fri, 15 Mar 2019 19:15:47 -0400	[thread overview]
Message-ID: <20190315231547.GB3242@redhat.com> (raw)
In-Reply-To: <1551819273-640-1-git-send-email-john.stultz@linaro.org>

On Tue, Mar 05, 2019 at 12:54:28PM -0800, John Stultz wrote:
> Here is a initial RFC of the dma-buf heaps patchset Andrew and I
> have been working on which tries to destage a fair chunk of ION
> functionality.
> 
> The patchset implements per-heap devices which can be opened
> directly and then an ioctl is used to allocate a dmabuf from the
> heap.
> 
> The interface is similar, but much simpler then IONs, only
> providing an ALLOC ioctl.
> 
> Also, I've provided simple system and cma heaps. The system
> heap in particular is missing the page-pool optimizations ION
> had, but works well enough to validate the interface.
> 
> I've booted and tested these patches with AOSP on the HiKey960
> using the kernel tree here:
>   https://git.linaro.org/people/john.stultz/android-dev.git/log/?h=dev/dma-buf-heap
> 
> And the userspace changes here:
>   https://android-review.googlesource.com/c/device/linaro/hikey/+/909436

What upstream driver will use this eventualy ? And why is it
needed ?

Cheers,
Jérôme

  parent reply	other threads:[~2019-03-15 23:15 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-05 20:54 [RFC][PATCH 0/5 v2] DMA-BUF Heaps (destaging ION) John Stultz
2019-03-05 20:54 ` [RFC][PATCH 1/5 v2] dma-buf: Add dma-buf heaps framework John Stultz
2019-03-06 16:12   ` Benjamin Gaignard
2019-03-06 16:57     ` John Stultz
2019-03-15  8:55     ` Christoph Hellwig
2019-03-06 16:27   ` Andrew F. Davis
2019-03-06 19:03     ` John Stultz
2019-03-06 21:45       ` Andrew F. Davis
2019-03-15  8:54   ` Christoph Hellwig
2019-03-15 20:24     ` Andrew F. Davis
2019-03-15 20:18   ` Laura Abbott
2019-03-15 20:49     ` Andrew F. Davis
2019-03-15 21:29     ` John Stultz
2019-03-15 22:44       ` Laura Abbott
2019-03-18  4:38         ` Sumit Semwal
2019-03-18  4:41         ` Sumit Semwal
2019-03-19 12:08   ` Brian Starkey
2019-03-19 15:24     ` Andrew F. Davis
2019-03-21 21:16     ` John Stultz
2019-03-27 14:53   ` Greg KH
2019-03-28  6:09     ` John Stultz
2019-03-05 20:54 ` [RFC][PATCH 2/5 v2] dma-buf: heaps: Add heap helpers John Stultz
2019-03-13 20:18   ` Liam Mark
2019-03-13 21:48     ` Andrew F. Davis
2019-03-13 22:57       ` Liam Mark
2019-03-13 23:42         ` Andrew F. Davis
2019-03-15  9:06   ` Christoph Hellwig
2019-03-19 15:03     ` Andrew F. Davis
2019-03-21 20:01     ` John Stultz
2019-03-19 14:26   ` Brian Starkey
2019-03-21 20:11     ` John Stultz
2019-03-21 20:35     ` Andrew F. Davis
2019-03-21 20:43   ` Andrew F. Davis
2019-03-05 20:54 ` [RFC][PATCH 3/5 v2] dma-buf: heaps: Add system heap to dmabuf heaps John Stultz
2019-03-06 16:01   ` Benjamin Gaignard
2019-03-11  5:48     ` John Stultz
2019-03-13 20:20   ` Liam Mark
2019-03-13 22:49     ` John Stultz
2019-03-15  9:06   ` Christoph Hellwig
2019-03-05 20:54 ` [RFC][PATCH 4/5 v2] dma-buf: heaps: Add CMA heap to dmabuf heapss John Stultz
2019-03-06 16:05   ` Benjamin Gaignard
2019-03-21 20:15     ` John Stultz
2019-03-15  9:06   ` Christoph Hellwig
2019-03-15 20:08     ` John Stultz
2019-03-19 14:53   ` Brian Starkey
2019-03-05 20:54 ` [RFC][PATCH 5/5 v2] kselftests: Add dma-heap test John Stultz
2019-03-06 16:14   ` Benjamin Gaignard
2019-03-06 16:35     ` Andrew F. Davis
2019-03-06 18:19       ` John Stultz
2019-03-06 18:32         ` Andrew F. Davis
2019-03-06 17:01     ` John Stultz
2019-03-15 20:07       ` Laura Abbott
2019-03-15 20:13         ` John Stultz
2019-03-15 20:49           ` Laura Abbott
2019-03-13 20:23   ` Liam Mark
2019-03-13 20:11 ` [RFC][PATCH 0/5 v2] DMA-BUF Heaps (destaging ION) Liam Mark
2019-03-13 22:30   ` John Stultz
2019-03-13 23:29     ` Liam Mark
2019-03-19 16:54     ` Benjamin Gaignard
2019-03-19 16:59       ` Andrew F. Davis
2019-03-19 21:58         ` Rob Clark
2019-03-19 22:36           ` John Stultz
2019-03-20  9:16             ` Benjamin Gaignard
2019-03-20 14:44               ` Andrew F. Davis
2019-03-20 15:59                 ` Benjamin Gaignard
2019-03-20 16:11               ` John Stultz
2019-03-15 20:34 ` Laura Abbott
2019-03-15 23:15 ` Jerome Glisse [this message]
2019-03-16  0:16   ` John Stultz

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