Shared semaphores for amdgpu

[Dave Airlie]

I've attached two patches for RFC at the moment, I haven't finished
the userspace for these yet, but just wanted to get some
ideas/feedback.

Dave.

On 9 March 2017 at 13:52, Dave Airlie <airlied at gmail.com> wrote:
> 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.
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