[Linaro-mm-sig] [RFC v3] dma-buf: Add buffer sharing framework
sumit.semwal at linaro.org
Mon Oct 10 16:36:09 UTC 2011
On 10 October 2011 02:13, Clark, Rob <rob at ti.com> wrote:
> hmm, random though..
> should we define CPU_PREP/CPU_FINI type ioctl's?
> At least in the GStreamer case, we could cache the userspace mmap'ing,
> and use the extra ioctls so the kernel side would know when cache
> clean/invalidate is needed. That would be a bit more efficient than
> forcing userspace to map/unmap all the time, and could hook into
> sync-objects of the allocator in cases where you have CPU access after
> GPU renders to a buffer..
So, you think we could post the RFC to upstream lists without this,
mentioning it as the immediate next TODO item? Or is it essential to add it
for v1 of RFC?
Thanks and regards,
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