[Intel-gfx] [RFC 1/2] drm/i915: Store LRC hardware id in the request

[Chris Wilson]

On Wed, Apr 20, 2016 at 03:24:56PM +0100, Tvrtko Ursulin 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>
> ---
>  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 be98e9643072..c680dcdad828 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;

I'm cringing because this add yet another execlists specific variable
that we can avoid... However, I have to admit that it is a simpler step
toward the same goal.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre