Re: [PATCH 21/21] drm/vmwgfx: Nuke preclose hook

From: Thomas Hellstrom <thellstrom@vmware.com>
To: Daniel Vetter <daniel.vetter@ffwll.ch>,
	DRI Development <dri-devel@lists.freedesktop.org>
Cc: Daniel Vetter <daniel.vetter@intel.com>,
	Intel Graphics Development <intel-gfx@lists.freedesktop.org>
Subject: Re: [PATCH 21/21] drm/vmwgfx: Nuke preclose hook
Date: Fri, 8 Jan 2016 21:53:47 +0100	[thread overview]
Message-ID: <569021DB.6060301@vmware.com> (raw)
In-Reply-To: <1452285413-28459-22-git-send-email-daniel.vetter@ffwll.ch>

On 01/08/2016 09:36 PM, Daniel Vetter wrote:
> Again since the drm core takes care of event unlinking/disarming this
> is now just needless code.
>
> Cc: Thomas Hellström <thellstrom@vmware.com>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Hmm,

IIRC this is actually a list of events that core drm is not aware of
yet. They sit on this list waiting for a fence to pass and are then
transferred to core drm....

/Thomas

> ---
>  drivers/gpu/drm/vc4/vc4_drv.h         |  1 -
>  drivers/gpu/drm/vmwgfx/vmwgfx_drv.c   | 10 ---------
>  drivers/gpu/drm/vmwgfx/vmwgfx_fence.c | 38 -----------------------------------
>  drivers/gpu/drm/vmwgfx/vmwgfx_fence.h |  2 --
>  4 files changed, 51 deletions(-)
>
> diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h
> index 080865ec2bae..4c734d087d7f 100644
> --- a/drivers/gpu/drm/vc4/vc4_drv.h
> +++ b/drivers/gpu/drm/vc4/vc4_drv.h
> @@ -376,7 +376,6 @@ int vc4_bo_stats_debugfs(struct seq_file *m, void *arg);
>  extern struct platform_driver vc4_crtc_driver;
>  int vc4_enable_vblank(struct drm_device *dev, unsigned int crtc_id);
>  void vc4_disable_vblank(struct drm_device *dev, unsigned int crtc_id);
> -void vc4_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file);
>  int vc4_crtc_debugfs_regs(struct seq_file *m, void *arg);
>  
>  /* vc4_debugfs.c */
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
> index c49812b80dd0..c04c4d1e2f3e 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
> @@ -971,15 +971,6 @@ static int vmw_driver_unload(struct drm_device *dev)
>  	return 0;
>  }
>  
> -static void vmw_preclose(struct drm_device *dev,
> -			 struct drm_file *file_priv)
> -{
> -	struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
> -	struct vmw_private *dev_priv = vmw_priv(dev);
> -
> -	vmw_event_fence_fpriv_gone(dev_priv->fman, &vmw_fp->fence_events);
> -}
> -
>  static void vmw_postclose(struct drm_device *dev,
>  			 struct drm_file *file_priv)
>  {
> @@ -1500,7 +1491,6 @@ static struct drm_driver driver = {
>  	.master_set = vmw_master_set,
>  	.master_drop = vmw_master_drop,
>  	.open = vmw_driver_open,
> -	.preclose = vmw_preclose,
>  	.postclose = vmw_postclose,
>  	.set_busid = drm_pci_set_busid,
>  
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c
> index e0edf149d9d5..55dc3e4754df 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c
> @@ -808,44 +808,6 @@ int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
>  }
>  
>  /**
> - * vmw_event_fence_fpriv_gone - Remove references to struct drm_file objects
> - *
> - * @fman: Pointer to a struct vmw_fence_manager
> - * @event_list: Pointer to linked list of struct vmw_event_fence_action objects
> - * with pointers to a struct drm_file object about to be closed.
> - *
> - * This function removes all pending fence events with references to a
> - * specific struct drm_file object about to be closed. The caller is required
> - * to pass a list of all struct vmw_event_fence_action objects with such
> - * events attached. This function is typically called before the
> - * struct drm_file object's event management is taken down.
> - */
> -void vmw_event_fence_fpriv_gone(struct vmw_fence_manager *fman,
> -				struct list_head *event_list)
> -{
> -	struct vmw_event_fence_action *eaction;
> -	struct drm_pending_event *event;
> -	unsigned long irq_flags;
> -
> -	while (1) {
> -		spin_lock_irqsave(&fman->lock, irq_flags);
> -		if (list_empty(event_list))
> -			goto out_unlock;
> -		eaction = list_first_entry(event_list,
> -					   struct vmw_event_fence_action,
> -					   fpriv_head);
> -		list_del_init(&eaction->fpriv_head);
> -		event = eaction->event;
> -		eaction->event = NULL;
> -		spin_unlock_irqrestore(&fman->lock, irq_flags);
> -		event->destroy(event);
> -	}
> -out_unlock:
> -	spin_unlock_irqrestore(&fman->lock, irq_flags);
> -}
> -
> -
> -/**
>   * vmw_event_fence_action_seq_passed
>   *
>   * @action: The struct vmw_fence_action embedded in a struct
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.h b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.h
> index 8be6c29f5eb5..83ae301ee141 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.h
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.h
> @@ -116,8 +116,6 @@ extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
>  				     struct drm_file *file_priv);
>  extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data,
>  				 struct drm_file *file_priv);
> -extern void vmw_event_fence_fpriv_gone(struct vmw_fence_manager *fman,
> -				       struct list_head *event_list);
>  extern int vmw_event_fence_action_queue(struct drm_file *filee_priv,
>  					struct vmw_fence_obj *fence,
>  					struct drm_pending_event *event,

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