[Intel-gfx] [PATCH 4/9] drm/i915: Remove unused head member in request struct

[Vivi, Rodrigo]

Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>

On Wed, 2015-04-15 at 16:52 -0700, Rodrigo Vivi wrote:
> From: Mika Kuoppala <mika.kuoppala at linux.intel.com>
> 
> commit 939fd762083f988be271da8c96398178daf9baf0
> Author: Mika Kuoppala <mika.kuoppala at linux.intel.com>
> Date:   Thu Jan 30 19:04:44 2014 +0200
> 
>     drm/i915: Get rid of acthd based guilty batch search
> 
> Failed to cleanup properly as it made the head obsolete.
> 
> Signed-off-by: Mika Kuoppala <mika.kuoppala at intel.com>
> Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_drv.h | 3 ---
>  drivers/gpu/drm/i915/i915_gem.c | 3 ---
>  2 files changed, 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 822f259..1a5e976 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -2050,9 +2050,6 @@ struct drm_i915_gem_request {
>  	/** GEM sequence number associated with this request. */
>  	uint32_t seqno;
>  
> -	/** Position in the ringbuffer of the start of the request */
> -	u32 head;
> -
>  	/**
>  	 * Position in the ringbuffer of the start of the postfix.
>  	 * This is required to calculate the maximum available ringbuffer
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index de6717e..11dfd49 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -2323,7 +2323,6 @@ int __i915_add_request(struct intel_engine_cs *ring,
>  	struct drm_i915_private *dev_priv = ring->dev->dev_private;
>  	struct drm_i915_gem_request *request;
>  	struct intel_ringbuffer *ringbuf;
> -	u32 request_start;
>  	int ret;
>  
>  	request = ring->outstanding_lazy_request;
> @@ -2335,7 +2334,6 @@ int __i915_add_request(struct intel_engine_cs *ring,
>  	} else
>  		ringbuf = ring->buffer;
>  
> -	request_start = intel_ring_get_tail(ringbuf);
>  	/*
>  	 * Emit any outstanding flushes - execbuf can fail to emit the flush
>  	 * after having emitted the batchbuffer command. Hence we need to fix
> @@ -2370,7 +2368,6 @@ int __i915_add_request(struct intel_engine_cs *ring,
>  			return ret;
>  	}
>  
> -	request->head = request_start;
>  	request->tail = intel_ring_get_tail(ringbuf);
>  
>  	/* Whilst this request exists, batch_obj will be on the