[Intel-gfx] [PATCH v2 3/7] drm/i915/guc/ct: Stop expecting multiple CT channels

[Michal Wajdeczko]

On Tue, 17 Dec 2019 02:23:12 +0100, Daniele Ceraolo Spurio  
<daniele.ceraolospurio at intel.com> wrote:

> The GuC supports having multiple CT buffer pairs and we designed our
> implementation with that in mind. However, the different channels are not
> processed in parallel within the GuC, so there is very little advantage
> in having multiple channels (independent locks?), compared to the
> drawbacks (one channel can starve the other if messages keep being
> submitted to it). Given this, it is unlikely we'll ever add a second
> channel and therefore we can simplify our code by removing the
> flexibility.
>
> v2: split substructure grouping to separate patch, improve docs (Michal)
>
> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
> Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
> Cc: John Harrison <John.C.Harrison at Intel.com>
> Cc: Matthew Brost <matthew.brost at intel.com>
> ---
Reviewed-by: Michal Wajdeczko <michal.wajdeczko at intel.com>