Linux Virtualization - Jul 2020 - [PATCH 2/2] drm/virtio: Remove open-coded commit-tail function

Exactly matches the one in the helpers.

This avoids me having to roll out dma-fence critical section
annotations to this copy.

Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
Cc: David Airlie <airlied at linux.ie>
Cc: Gerd Hoffmann <kraxel at redhat.com>
Cc: virtualization at lists.linux-foundation.org
---
 drivers/gpu/drm/virtio/virtgpu_display.c | 20 --------------------
 1 file changed, 20 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c
b/drivers/gpu/drm/virtio/virtgpu_display.c
index f3ce49c5a34c..af55b334be2f 100644
--- a/drivers/gpu/drm/virtio/virtgpu_display.c
+++ b/drivers/gpu/drm/virtio/virtgpu_display.c
@@ -314,25 +314,6 @@ virtio_gpu_user_framebuffer_create(struct drm_device *dev,
 	return &virtio_gpu_fb->base;
 }
 
-static void vgdev_atomic_commit_tail(struct drm_atomic_state *state)
-{
-	struct drm_device *dev = state->dev;
-
-	drm_atomic_helper_commit_modeset_disables(dev, state);
-	drm_atomic_helper_commit_modeset_enables(dev, state);
-	drm_atomic_helper_commit_planes(dev, state, 0);
-
-	drm_atomic_helper_fake_vblank(state);
-	drm_atomic_helper_commit_hw_done(state);
-
-	drm_atomic_helper_wait_for_vblanks(dev, state);
-	drm_atomic_helper_cleanup_planes(dev, state);
-}
-
-static const struct drm_mode_config_helper_funcs virtio_mode_config_helpers = {
-	.atomic_commit_tail = vgdev_atomic_commit_tail,
-};
-
 static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = {
 	.fb_create = virtio_gpu_user_framebuffer_create,
 	.atomic_check = drm_atomic_helper_check,
@@ -346,7 +327,6 @@ void virtio_gpu_modeset_init(struct virtio_gpu_device
*vgdev)
 	drm_mode_config_init(vgdev->ddev);
 	vgdev->ddev->mode_config.quirk_addfb_prefer_host_byte_order = true;
 	vgdev->ddev->mode_config.funcs = &virtio_gpu_mode_funcs;
-	vgdev->ddev->mode_config.helper_private =
&virtio_mode_config_helpers;
 
 	/* modes will be validated against the framebuffer size */
 	vgdev->ddev->mode_config.min_width = XRES_MIN;
-- 
2.27.0

On Thu, Jul 09, 2020 at 02:33:39PM +0200, Daniel Vetter
wrote:
> Exactly matches the one in the helpers.
> 
> This avoids me having to roll out dma-fence critical section
> annotations to this copy.
> 
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> Cc: David Airlie <airlied at linux.ie>
> Cc: Gerd Hoffmann <kraxel at redhat.com>
> Cc: virtualization at lists.linux-foundation.org
Acked-by: Gerd Hoffmann <kraxel at redhat.com>

On Thu, Jul 09, 2020 at 02:33:39PM +0200, Daniel Vetter
wrote:
> Exactly matches the one in the helpers.
> 
> This avoids me having to roll out dma-fence critical section
> annotations to this copy.
> 
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> Cc: David Airlie <airlied at linux.ie>
> Cc: Gerd Hoffmann <kraxel at redhat.com>
> Cc: virtualization at lists.linux-foundation.org
> ---
>  drivers/gpu/drm/virtio/virtgpu_display.c | 20 --------------------
>  1 file changed, 20 deletions(-)
Very nice catch:
Reviewed-by: Sam Ravnborg <sam at ravnborg.org>
> 
> diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c
b/drivers/gpu/drm/virtio/virtgpu_display.c
> index f3ce49c5a34c..af55b334be2f 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_display.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_display.c
> @@ -314,25 +314,6 @@ virtio_gpu_user_framebuffer_create(struct drm_device
*dev,
>  	return &virtio_gpu_fb->base;
>  }
>  
> -static void vgdev_atomic_commit_tail(struct drm_atomic_state *state)
> -{
> -	struct drm_device *dev = state->dev;
> -
> -	drm_atomic_helper_commit_modeset_disables(dev, state);
> -	drm_atomic_helper_commit_modeset_enables(dev, state);
> -	drm_atomic_helper_commit_planes(dev, state, 0);
> -
> -	drm_atomic_helper_fake_vblank(state);
> -	drm_atomic_helper_commit_hw_done(state);
> -
> -	drm_atomic_helper_wait_for_vblanks(dev, state);
> -	drm_atomic_helper_cleanup_planes(dev, state);
> -}
> -
> -static const struct drm_mode_config_helper_funcs
virtio_mode_config_helpers = {
> -	.atomic_commit_tail = vgdev_atomic_commit_tail,
> -};
> -
>  static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = {
>  	.fb_create = virtio_gpu_user_framebuffer_create,
>  	.atomic_check = drm_atomic_helper_check,
> @@ -346,7 +327,6 @@ void virtio_gpu_modeset_init(struct virtio_gpu_device
*vgdev)
>  	drm_mode_config_init(vgdev->ddev);
>  	vgdev->ddev->mode_config.quirk_addfb_prefer_host_byte_order = true;
>  	vgdev->ddev->mode_config.funcs = &virtio_gpu_mode_funcs;
> -	vgdev->ddev->mode_config.helper_private =
&virtio_mode_config_helpers;
>  
>  	/* modes will be validated against the framebuffer size */
>  	vgdev->ddev->mode_config.min_width = XRES_MIN;
> -- 
> 2.27.0
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

On Thu, Jul 09, 2020 at 04:05:31PM +0200, Sam Ravnborg
wrote:
> On Thu, Jul 09, 2020 at 02:33:39PM +0200, Daniel Vetter wrote:
> > Exactly matches the one in the helpers.
> > 
> > This avoids me having to roll out dma-fence critical section
> > annotations to this copy.
> > 
> > Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> > Cc: David Airlie <airlied at linux.ie>
> > Cc: Gerd Hoffmann <kraxel at redhat.com>
> > Cc: virtualization at lists.linux-foundation.org
> > ---
> >  drivers/gpu/drm/virtio/virtgpu_display.c | 20 --------------------
> >  1 file changed, 20 deletions(-)
> Very nice catch:
> Reviewed-by: Sam Ravnborg <sam at ravnborg.org>
Patch applied, thanks for reviewing.
> > 
> > diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c
b/drivers/gpu/drm/virtio/virtgpu_display.c
> > index f3ce49c5a34c..af55b334be2f 100644
> > --- a/drivers/gpu/drm/virtio/virtgpu_display.c
> > +++ b/drivers/gpu/drm/virtio/virtgpu_display.c
> > @@ -314,25 +314,6 @@ virtio_gpu_user_framebuffer_create(struct
drm_device *dev,
> >  	return &virtio_gpu_fb->base;
> >  }
> >  
> > -static void vgdev_atomic_commit_tail(struct drm_atomic_state *state)
> > -{
> > -	struct drm_device *dev = state->dev;
> > -
> > -	drm_atomic_helper_commit_modeset_disables(dev, state);
> > -	drm_atomic_helper_commit_modeset_enables(dev, state);
> > -	drm_atomic_helper_commit_planes(dev, state, 0);
> > -
> > -	drm_atomic_helper_fake_vblank(state);
> > -	drm_atomic_helper_commit_hw_done(state);
> > -
> > -	drm_atomic_helper_wait_for_vblanks(dev, state);
> > -	drm_atomic_helper_cleanup_planes(dev, state);
> > -}
> > -
> > -static const struct drm_mode_config_helper_funcs
virtio_mode_config_helpers = {
> > -	.atomic_commit_tail = vgdev_atomic_commit_tail,
> > -};
> > -
> >  static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = {
> >  	.fb_create = virtio_gpu_user_framebuffer_create,
> >  	.atomic_check = drm_atomic_helper_check,
> > @@ -346,7 +327,6 @@ void virtio_gpu_modeset_init(struct
virtio_gpu_device *vgdev)
> >  	drm_mode_config_init(vgdev->ddev);
> >  	vgdev->ddev->mode_config.quirk_addfb_prefer_host_byte_order =
true;
> >  	vgdev->ddev->mode_config.funcs = &virtio_gpu_mode_funcs;
> > -	vgdev->ddev->mode_config.helper_private =
&virtio_mode_config_helpers;
> >  
> >  	/* modes will be validated against the framebuffer size */
> >  	vgdev->ddev->mode_config.min_width = XRES_MIN;
> > -- 
> > 2.27.0
> > 
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch