linux-kernel - Re: [PATCH] staging: ion: remove from the tree

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Message-ID: <CALAqxLWtrnYizdDVAQMqy1JmeZ5jUCko1XKaEtAd0zoV6oj0aQ@mail.gmail.com>
Date:   Fri, 16 Oct 2020 11:34:09 -0700
From:   John Stultz <john.stultz@...aro.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Laura Abbott <laura@...bott.name>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        driverdevel <devel@...verdev.osuosl.org>,
        "moderated list:DMA BUFFER SHARING FRAMEWORK" 
        <linaro-mm-sig@...ts.linaro.org>, Shuah Khan <shuah@...nel.org>,
        Todd Kjos <tkjos@...roid.com>,
        Martijn Coenen <maco@...roid.com>,
        lkml <linux-kernel@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Suren Baghdasaryan <surenb@...gle.com>,
        Christoph Hellwig <hch@...radead.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Arve Hjønnevåg <arve@...roid.com>,
        Hridya Valsaraju <hridya@...gle.com>,
        Android Kernel Team <kernel-team@...roid.com>,
        Christian König <christian.koenig@....com>,
        Christian Brauner <christian@...uner.io>
Subject: Re: [PATCH] staging: ion: remove from the tree

On Fri, Oct 16, 2020 at 1:29 AM Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
>
> On Thu, Aug 27, 2020 at 09:31:27AM -0400, Laura Abbott wrote:
> > On 8/27/20 8:36 AM, Greg Kroah-Hartman wrote:
> > > The ION android code has long been marked to be removed, now that we
> > > dma-buf support merged into the real part of the kernel.
> > >
> > > It was thought that we could wait to remove the ion kernel at a later
> > > time, but as the out-of-tree Android fork of the ion code has diverged
> > > quite a bit, and any Android device using the ion interface uses that
> > > forked version and not this in-tree version, the in-tree copy of the
> > > code is abandonded and not used by anyone.
> > >
> > > Combine this abandoned codebase with the need to make changes to it in
> > > order to keep the kernel building properly, which then causes merge
> > > issues when merging those changes into the out-of-tree Android code, and
> > > you end up with two different groups of people (the in-kernel-tree
> > > developers, and the Android kernel developers) who are both annoyed at
> > > the current situation.  Because of this problem, just drop the in-kernel
> > > copy of the ion code now, as it's not used, and is only causing problems
> > > for everyone involved.
> > >
> > > Cc: "Arve Hjønnevåg" <arve@...roid.com>
> > > Cc: "Christian König" <christian.koenig@....com>
> > > Cc: Christian Brauner <christian@...uner.io>
> > > Cc: Christoph Hellwig <hch@...radead.org>
> > > Cc: Hridya Valsaraju <hridya@...gle.com>
> > > Cc: Joel Fernandes <joel@...lfernandes.org>
> > > Cc: John Stultz <john.stultz@...aro.org>
> > > Cc: Laura Abbott <laura@...bott.name>
> > > Cc: Martijn Coenen <maco@...roid.com>
> > > Cc: Shuah Khan <shuah@...nel.org>
> > > Cc: Sumit Semwal <sumit.semwal@...aro.org>
> > > Cc: Suren Baghdasaryan <surenb@...gle.com>
> > > Cc: Todd Kjos <tkjos@...roid.com>
> > > Cc: devel@...verdev.osuosl.org
> > > Cc: dri-devel@...ts.freedesktop.org
> > > Cc: linaro-mm-sig@...ts.linaro.org
> > > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> >
> > We discussed this at the Android MC on Monday and the plan was to
> > remove it after the next LTS release.
>
> As 5.10 will be the next LTS release, I have now merged it to my
> "testing" branch to go into 5.11-rc1.

Sounds great! Thanks so much for waiting a bit on this, I really appreciate it!
-john