From: John Stultz <john.stultz@linaro.org>
To: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>,
"Andrew F . Davis" <afd@ti.com>,
Benjamin Gaignard <benjamin.gaignard@linaro.org>,
Liam Mark <lmark@codeaurora.org>,
Laura Abbott <labbott@redhat.com>,
Brian Starkey <Brian.Starkey@arm.com>,
Christian Koenig <christian.koenig@amd.com>,
linux-media@vger.kernel.org,
dri-devel <dri-devel@lists.freedesktop.org>,
"moderated list:DMA BUFFER SHARING FRAMEWORK"
<linaro-mm-sig@lists.linaro.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] dma-buf: heaps: Introduce dma_heap_add_cma() for non-default CMA heap
Date: Fri, 31 Jul 2020 12:38:07 -0700 [thread overview]
Message-ID: <CALAqxLVzUnc5CH_pA7h3ygXFPRz05KtNZx+_M3eAXXrm7hhGBQ@mail.gmail.com> (raw)
In-Reply-To: <eacfc713-e98a-78fa-b316-3943600813d0@socionext.com>
On Fri, Jul 31, 2020 at 2:32 AM Kunihiko Hayashi
<hayashi.kunihiko@socionext.com> wrote:
> On 2020/07/29 4:17, John Stultz wrote:
> > Do you have a upstream driver that you plan to make use this new call?
>
> Unfortunately I don't have an upstream driver using this call.
>
> This call is called from dma-buf heaps "importer" or "customer",
> and I only made an example (do nothing) importer driver
> to test the call.
>
> > We want to have in-tree users of code added.
>
> I think this is a generic way to use non-default CMA heaps, however,
> we need in-tree "importer" drivers to want to use non-default CMA heaps.
> I don't find it from now.
>
Yea, I and again, I do agree this is functionality that will be
needed. But we'll need to wait for a user (camera driver, etc which
would utilize the reserved cma region) before we can merge it
upstream. :( Do let me know if you have an out of tree driver that
would make use of it, and we can see what can be done to help upstream
things.
thanks
-john
next prev parent reply other threads:[~2020-07-31 19:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-17 1:10 [PATCH] dma-buf: heaps: Introduce dma_heap_add_cma() for non-default CMA heap Kunihiko Hayashi
2020-07-28 19:17 ` John Stultz
2020-07-31 9:32 ` Kunihiko Hayashi
2020-07-31 19:38 ` John Stultz [this message]
2020-08-21 9:14 ` Kunihiko Hayashi
2020-08-21 18:32 ` John Stultz
2020-08-25 11:09 ` Kunihiko Hayashi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CALAqxLVzUnc5CH_pA7h3ygXFPRz05KtNZx+_M3eAXXrm7hhGBQ@mail.gmail.com \
--to=john.stultz@linaro.org \
--cc=Brian.Starkey@arm.com \
--cc=afd@ti.com \
--cc=benjamin.gaignard@linaro.org \
--cc=christian.koenig@amd.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=hayashi.kunihiko@socionext.com \
--cc=labbott@redhat.com \
--cc=linaro-mm-sig@lists.linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=lmark@codeaurora.org \
--cc=sumit.semwal@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).