From: John Stultz <john.stultz@linaro.org>
To: Daniel Vetter <daniel@ffwll.ch>
Cc: lkml <linux-kernel@vger.kernel.org>,
Sandeep Patil <sspatil@google.com>,
Mike Rapoport <rppt@linux.ibm.com>,
Chenbo Feng <fengc@google.com>,
Alistair Strachan <astrachan@google.com>,
Liam Mark <lmark@codeaurora.org>, Yue Hu <huyue2@yulong.com>,
dri-devel <dri-devel@lists.freedesktop.org>,
"Andrew F . Davis" <afd@ti.com>,
Hridya Valsaraju <hridya@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Pratik Patel <pratikp@codeaurora.org>
Subject: Re: [RFC][PATCH 2/2] dma-buf: heaps: Allow system & cma heaps to be configured as a modules
Date: Mon, 4 Nov 2019 11:00:08 -0800 [thread overview]
Message-ID: <CALAqxLXq=4dw=WfJZhXh=Ft3SHK1QUJZRt+rwy4ZuKTbjZUEpQ@mail.gmail.com> (raw)
In-Reply-To: <20191104102445.GE10326@phenom.ffwll.local>
On Mon, Nov 4, 2019 at 2:24 AM Daniel Vetter <daniel@ffwll.ch> wrote:
> On Fri, Oct 25, 2019 at 11:48:34PM +0000, John Stultz wrote:
> > Allow loading system and cma heap as a module instead of just as
> > a statically built in heap.
> >
> > Since there isn't a good mechanism for dmabuf lifetime tracking
> > it isn't safe to allow the heap drivers to be unloaded, so these
> > drivers do not implement any module unloading functionality and
> > will show up in lsmod as "[permanent]".
>
> dma-buf itself has all the try_module_get we'll need ... why is this not
> possible?
Let me look into that. Thanks for the pointer.
thanks
-john
next prev parent reply other threads:[~2019-11-04 19:00 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-25 23:48 [RFC][PATCH 0/2] Allow DMA BUF heaps to be loaded as modules John Stultz
2019-10-25 23:48 ` [RFC][PATCH 1/2] mm: cma: Export cma symbols for cma heap as a module John Stultz
2019-10-28 7:46 ` Christoph Hellwig
2019-10-28 18:39 ` John Stultz
2019-10-28 22:23 ` John Stultz
2019-10-28 19:12 ` sspatil
2019-10-28 20:03 ` John Stultz
2019-10-28 22:26 ` John Stultz
2019-10-25 23:48 ` [RFC][PATCH 2/2] dma-buf: heaps: Allow system & cma heaps to be configured as a modules John Stultz
2019-11-04 9:45 ` Brian Starkey
2019-11-04 10:24 ` Daniel Vetter
2019-11-04 19:00 ` John Stultz [this message]
2019-11-04 9:58 ` [RFC][PATCH 0/2] Allow DMA BUF heaps to be loaded as modules Daniel Vetter
2019-11-04 18:57 ` John Stultz
2019-11-05 9:42 ` Daniel Vetter
2019-11-05 13:30 ` Andrew F. Davis
2019-11-05 13:58 ` Daniel Vetter
2019-11-05 17:41 ` John Stultz
2019-11-05 19:18 ` Daniel Vetter
2019-11-05 19:47 ` John Stultz
2019-11-05 20:21 ` Daniel Vetter
2019-11-12 0:56 ` Sandeep Patil
2019-11-12 0:49 ` Sandeep Patil
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