[Intel-gfx] [PATCH 18/19] drm/i915: Store LRC hardware id in the request

[Tvrtko Ursulin]

On 20/04/16 19:42, Chris Wilson wrote:
> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
>
> This way in the following patch we can disconnect requests
> from contexts.
>
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Surely I didn't review my own patch? :)

Regards,

Tvrtko

> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> ---
>   drivers/gpu/drm/i915/i915_drv.h  | 2 ++
>   drivers/gpu/drm/i915/intel_lrc.c | 3 ++-
>   2 files changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 515b8badce61..0efbe6c4634f 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -2349,6 +2349,8 @@ struct drm_i915_gem_request {
>   	/** Execlists no. of times this request has been sent to the ELSP */
>   	int elsp_submitted;
>
> +	/** Execlists context hardware id. */
> +	unsigned ctx_hw_id;
>   };
>
>   struct drm_i915_gem_request * __must_check
> diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
> index 67c369ae649b..833d8fd3343f 100644
> --- a/drivers/gpu/drm/i915/intel_lrc.c
> +++ b/drivers/gpu/drm/i915/intel_lrc.c
> @@ -477,7 +477,7 @@ execlists_check_remove_request(struct intel_engine_cs *engine, u32 request_id)
>   	if (!head_req)
>   		return 0;
>
> -	if (unlikely(head_req->ctx->hw_id != request_id))
> +	if (unlikely(head_req->ctx_hw_id != request_id))
>   		return 0;
>
>   	WARN(head_req->elsp_submitted == 0, "Never submitted head request\n");
> @@ -615,6 +615,7 @@ static void execlists_context_queue(struct drm_i915_gem_request *request)
>   	}
>
>   	list_add_tail(&request->execlist_link, &engine->execlist_queue);
> +	request->ctx_hw_id = request->ctx->hw_id;
>   	if (num_elements == 0)
>   		execlists_context_unqueue(engine);
>
>