[Intel-gfx] [PATCH 7/7] drm/i915: Drop unpin stall in atomic_prepare_commit

[Daniel Vetter]

On Thu, Jul 20, 2017 at 07:57:54PM +0200, Daniel Vetter wrote:
> The core already does this in setup_commit(). With this we can also
> remove the unpin_work_count since it's the last user, and also remove
> the loop since that was only used for stalling against legacy flips.
> 
> v2: Amend commit message a bit (Chris).
> 
> Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Reviewed-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

Ok, I pulled in 4-7 of this series. I'll drop 2&3 since they're not a
complete solution.
-Daniel

> ---
>  drivers/gpu/drm/i915/intel_display.c | 13 +------------
>  drivers/gpu/drm/i915/intel_drv.h     |  2 --
>  2 files changed, 1 insertion(+), 14 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index c10966ebf6fc..1009ad9d8221 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -11830,18 +11830,7 @@ static int intel_atomic_check(struct drm_device *dev,
>  static int intel_atomic_prepare_commit(struct drm_device *dev,
>  				       struct drm_atomic_state *state)
>  {
> -	struct drm_i915_private *dev_priv = to_i915(dev);
> -	struct drm_crtc_state *crtc_state;
> -	struct drm_crtc *crtc;
> -	int i, ret;
> -
> -	for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
> -		if (state->legacy_cursor_update)
> -			continue;
> -
> -		if (atomic_read(&to_intel_crtc(crtc)->unpin_work_count) >= 2)
> -			flush_workqueue(dev_priv->wq);
> -	}
> +	int ret;
>  
>  	ret = mutex_lock_interruptible(&dev->struct_mutex);
>  	if (ret)
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 9cb7e781e863..96402c06e295 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -798,8 +798,6 @@ struct intel_crtc {
>  	unsigned long long enabled_power_domains;
>  	struct intel_overlay *overlay;
>  
> -	atomic_t unpin_work_count;
> -
>  	/* Display surface base address adjustement for pageflips. Note that on
>  	 * gen4+ this only adjusts up to a tile, offsets within a tile are
>  	 * handled in the hw itself (with the TILEOFF register). */
> -- 
> 2.13.2
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch