Shared semaphores for amdgpu

[Dave Airlie]

On 28 February 2017 at 11:46, zhoucm1 <david1.zhou at amd.com> wrote:
> Hi Dave,
>
> The attached is our semaphore implementation, amdgpu_cs.c is drm file, the
> others are kernel file.
> Any suggestion?
Thanks,

I've built a tree with all these in it, and started looking into the interface.

I do wonder if we need the separate sem signal/wait interface, I think
we should just add
semaphore chunks to the CS interface.

I'm just playing around with this now.

Dave.