Messages in this thread | | | From | John Stultz <> | Date | Mon, 4 Nov 2019 11:00:08 -0800 | Subject | Re: [RFC][PATCH 2/2] dma-buf: heaps: Allow system & cma heaps to be configured as a modules |
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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
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