From: Laura Abbott <labbott@redhat.com>
To: John Stultz <john.stultz@linaro.org>,
Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
Greg KH <gregkh@linuxfoundation.org>,
Sumit Semwal <sumit.semwal@linaro.org>,
Liam Mark <lmark@codeaurora.org>,
Brian Starkey <Brian.Starkey@arm.com>,
"Andrew F . Davis" <afd@ti.com>, Chenbo Feng <fengc@google.com>,
Alistair Strachan <astrachan@google.com>,
ML dri-devel <dri-devel@lists.freedesktop.org>
Subject: Re: [RFC][PATCH 5/5 v2] kselftests: Add dma-heap test
Date: Fri, 15 Mar 2019 13:07:29 -0700 [thread overview]
Message-ID: <232410de-f20c-cde8-fdbb-48ca8ec1223b@redhat.com> (raw)
In-Reply-To: <CALAqxLWxpExDpiKbNGQ6Oz5h=FUPNLvehm34JdrntLQjFed41w@mail.gmail.com>
On 3/6/19 9:01 AM, John Stultz wrote:
> On Wed, Mar 6, 2019 at 8:14 AM Benjamin Gaignard
> <benjamin.gaignard@linaro.org> wrote:
>> Le mar. 5 mars 2019 à 21:54, John Stultz <john.stultz@linaro.org> a écrit :
>>> +
>>> + printf("Allocating 1 MEG\n");
>>> + ret = dmabuf_heap_alloc(heap_fd, ONE_MEG, 0, &dmabuf_fd);
>>> + if (ret)
>>> + goto out;
>>> +
>>> + /* DO SOMETHING WITH THE DMABUF HERE? */
>>
>> You can do a call to mmap and write a pattern in the buffer.
>
> Yea. I can also do some invalid allocations to make sure things fail properly.
>
> But I was talking a bit w/ Sumit about the lack of any general dmabuf
> tests, and am curious if we need to have a importer device driver that
> can validate its a real dmabuf and exercise more of the dmabuf ops.
>
> thanks
> -john
>
There's the vgem driver in drm. I did some work to clean that
up so it could take an import af33a9190d02 ("drm/vgem: Enable dmabuf import
interfaces") . I mostly used it for private tests and never ended
up upstreaming any of the tests.
Thanks,
Laura
next prev parent reply other threads:[~2019-03-15 20:07 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 [this message]
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
2019-03-16 0:16 ` John Stultz
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