On Tue, Mar 14, 2017 at 01:30:30PM -0700, Laura Abbott wrote:
On 03/14/2017 01:13 PM, Daniel Vetter wrote:
On Tue, Mar 14, 2017 at 01:04:19PM -0700, Laura Abbott wrote:
dma-buf is designed to share buffers. Sharing means that there needs to be another subsystem to accept those buffers. Introduce a simple test module to act as a dummy system to accept dma_bufs from elsewhere. The goal is to provide a very simple interface to validate exported buffers do something reasonable. This is based on ion_test.c that existed for the Ion framework.
Signed-off-by: Laura Abbott labbott@redhat.com
This is basically a drop in of what was available as drivers/staging/android/ion/ion_test.c. Given it has no Ion specific parts it might be useful as a more general test module. RFC mostly to see if this is generally useful or not.
We already have a test dma-buf driver, which also handles reservation objects and can create fences to provoke signalling races an all kinds of other fun. It's drivers/gpu/drm/vgem.
If there's anything missing in there, patches very much welcome. -Daniel
Thanks for that pointer. It certainly looks more complete vs. allocating a platform_device. I'll look and see if there's anything that needs extension. Plus this means I can probably delete more code from Ion (woo)
\o/ for less code!
btw for the tests, I think we should really hard to either get them into kselftests or igt. -Daniel