[Intel-gfx] [PATCH 11/22] drm/i915: Record the sseu configuration per-context

[Lionel Landwerlin]

On 13/05/17 10:45, Chris Wilson wrote:
> On Thu, May 11, 2017 at 04:43:34PM +0100, Lionel Landwerlin wrote:
>> From: Chris Wilson <chris at chris-wilson.co.uk>
>>
>> In the next patch, we will expose the ability to reconfigure the slices,
>> subslice and eu per context. To facilitate that, store the current
>> configuration on the context, which is initially set to the device
>> default upon creation.
> There's another wrinkle in that we need to record this in intel_context
> (i.e. per engine). Is OA limited to RCS?
> -Chris
>

It's really ad-hoc.
Reports produced by the OA unit contain 3 sets of counters :
  - A counters are completely RCS related
  - B & C counters can be anywhere in the GPU

And up to Gen10 the OA unit is part of RCS.