Re: [PATCH 1/3] drm/atomic: Improve debug messages

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On 2018-06-11 03:34 PM, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> 
> Print the id/name of the object we're dealing with. Makes it easier to
> figure out what's going on. Also toss in a few extra debug prints that
> might be useful.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Reviewed-by: Harry Wentland <harry.wentland@xxxxxxx>

Harry

> ---
>  drivers/gpu/drm/drm_atomic.c | 88 ++++++++++++++++++++++++++++++--------------
>  1 file changed, 61 insertions(+), 27 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> index ee4b43b9404e..d7de83a6c1c2 100644
> --- a/drivers/gpu/drm/drm_atomic.c
> +++ b/drivers/gpu/drm/drm_atomic.c
> @@ -339,6 +339,7 @@ static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state,
>  int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
>  				 const struct drm_display_mode *mode)
>  {
> +	struct drm_crtc *crtc = state->crtc;
>  	struct drm_mode_modeinfo umode;
>  
>  	/* Early return for no change. */
> @@ -359,13 +360,13 @@ int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
>  
>  		drm_mode_copy(&state->mode, mode);
>  		state->enable = true;
> -		DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
> -				 mode->name, state);
> +		DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
> +				 mode->name, crtc->base.id, crtc->name, state);
>  	} else {
>  		memset(&state->mode, 0, sizeof(state->mode));
>  		state->enable = false;
> -		DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
> -				 state);
> +		DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
> +				 crtc->base.id, crtc->name, state);
>  	}
>  
>  	return 0;
> @@ -388,6 +389,8 @@ EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc);
>  int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
>                                        struct drm_property_blob *blob)
>  {
> +	struct drm_crtc *crtc = state->crtc;
> +
>  	if (blob == state->mode_blob)
>  		return 0;
>  
> @@ -404,12 +407,13 @@ int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
>  
>  		state->mode_blob = drm_property_blob_get(blob);
>  		state->enable = true;
> -		DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
> -				 state->mode.name, state);
> +		DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
> +				 state->mode.name, crtc->base.id, crtc->name,
> +				 state);
>  	} else {
>  		state->enable = false;
> -		DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
> -				 state);
> +		DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
> +				 crtc->base.id, crtc->name, state);
>  	}
>  
>  	return 0;
> @@ -539,10 +543,14 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
>  			return -EFAULT;
>  
>  		set_out_fence_for_crtc(state->state, crtc, fence_ptr);
> -	} else if (crtc->funcs->atomic_set_property)
> +	} else if (crtc->funcs->atomic_set_property) {
>  		return crtc->funcs->atomic_set_property(crtc, state, property, val);
> -	else
> +	} else {
> +		DRM_DEBUG_ATOMIC("[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n",
> +				 crtc->base.id, crtc->name,
> +				 property->base.id, property->name);
>  		return -EINVAL;
> +	}
>  
>  	return 0;
>  }
> @@ -799,8 +807,11 @@ static int drm_atomic_plane_set_property(struct drm_plane *plane,
>  	} else if (property == plane->alpha_property) {
>  		state->alpha = val;
>  	} else if (property == plane->rotation_property) {
> -		if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK))
> +		if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) {
> +			DRM_DEBUG_ATOMIC("[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n",
> +					 plane->base.id, plane->name, val);
>  			return -EINVAL;
> +		}
>  		state->rotation = val;
>  	} else if (property == plane->zpos_property) {
>  		state->zpos = val;
> @@ -812,6 +823,9 @@ static int drm_atomic_plane_set_property(struct drm_plane *plane,
>  		return plane->funcs->atomic_set_property(plane, state,
>  				property, val);
>  	} else {
> +		DRM_DEBUG_ATOMIC("[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n",
> +				 plane->base.id, plane->name,
> +				 property->base.id, property->name);
>  		return -EINVAL;
>  	}
>  
> @@ -919,10 +933,12 @@ static int drm_atomic_plane_check(struct drm_plane *plane,
>  
>  	/* either *both* CRTC and FB must be set, or neither */
>  	if (state->crtc && !state->fb) {
> -		DRM_DEBUG_ATOMIC("CRTC set but no FB\n");
> +		DRM_DEBUG_ATOMIC("[PLANE:%d:%s] CRTC set but no FB\n",
> +				 plane->base.id, plane->name);
>  		return -EINVAL;
>  	} else if (state->fb && !state->crtc) {
> -		DRM_DEBUG_ATOMIC("FB set but no CRTC\n");
> +		DRM_DEBUG_ATOMIC("[PLANE:%d:%s] FB set but no CRTC\n",
> +				 plane->base.id, plane->name);
>  		return -EINVAL;
>  	}
>  
> @@ -932,7 +948,9 @@ static int drm_atomic_plane_check(struct drm_plane *plane,
>  
>  	/* Check whether this plane is usable on this CRTC */
>  	if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) {
> -		DRM_DEBUG_ATOMIC("Invalid crtc for plane\n");
> +		DRM_DEBUG_ATOMIC("Invalid [CRTC:%d:%s] for [PLANE:%d:%s]\n",
> +				 state->crtc->base.id, state->crtc->name,
> +				 plane->base.id, plane->name);
>  		return -EINVAL;
>  	}
>  
> @@ -941,7 +959,8 @@ static int drm_atomic_plane_check(struct drm_plane *plane,
>  					   state->fb->modifier);
>  	if (ret) {
>  		struct drm_format_name_buf format_name;
> -		DRM_DEBUG_ATOMIC("Invalid pixel format %s, modifier 0x%llx\n",
> +		DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid pixel format %s, modifier 0x%llx\n",
> +				 plane->base.id, plane->name,
>  				 drm_get_format_name(state->fb->format->format,
>  						     &format_name),
>  				 state->fb->modifier);
> @@ -953,7 +972,8 @@ static int drm_atomic_plane_check(struct drm_plane *plane,
>  	    state->crtc_x > INT_MAX - (int32_t) state->crtc_w ||
>  	    state->crtc_h > INT_MAX ||
>  	    state->crtc_y > INT_MAX - (int32_t) state->crtc_h) {
> -		DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n",
> +		DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid CRTC coordinates %ux%u+%d+%d\n",
> +				 plane->base.id, plane->name,
>  				 state->crtc_w, state->crtc_h,
>  				 state->crtc_x, state->crtc_y);
>  		return -ERANGE;
> @@ -967,8 +987,9 @@ static int drm_atomic_plane_check(struct drm_plane *plane,
>  	    state->src_x > fb_width - state->src_w ||
>  	    state->src_h > fb_height ||
>  	    state->src_y > fb_height - state->src_h) {
> -		DRM_DEBUG_ATOMIC("Invalid source coordinates "
> +		DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid source coordinates "
>  				 "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
> +				 plane->base.id, plane->name,
>  				 state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10,
>  				 state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10,
>  				 state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10,
> @@ -1297,6 +1318,9 @@ static int drm_atomic_connector_set_property(struct drm_connector *connector,
>  		return connector->funcs->atomic_set_property(connector,
>  				state, property, val);
>  	} else {
> +		DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n",
> +				 connector->base.id, connector->name,
> +				 property->base.id, property->name);
>  		return -EINVAL;
>  	}
>  
> @@ -1465,11 +1489,12 @@ drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
>  	}
>  
>  	if (crtc)
> -		DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n",
> -				 plane_state, crtc->base.id, crtc->name);
> +		DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [CRTC:%d:%s]\n",
> +				 plane->base.id, plane->name, plane_state,
> +				 crtc->base.id, crtc->name);
>  	else
> -		DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n",
> -				 plane_state);
> +		DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [NOCRTC]\n",
> +				 plane->base.id, plane->name, plane_state);
>  
>  	return 0;
>  }
> @@ -1489,12 +1514,15 @@ void
>  drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
>  			    struct drm_framebuffer *fb)
>  {
> +	struct drm_plane *plane = plane_state->plane;
> +
>  	if (fb)
> -		DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n",
> -				 fb->base.id, plane_state);
> -	else
> -		DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n",
> +		DRM_DEBUG_ATOMIC("Set [FB:%d] for [PLANE:%d:%s] state %p\n",
> +				 fb->base.id, plane->base.id, plane->name,
>  				 plane_state);
> +	else
> +		DRM_DEBUG_ATOMIC("Set [NOFB] for [PLANE:%d:%s] state %p\n",
> +				 plane->base.id, plane->name, plane_state);
>  
>  	drm_framebuffer_assign(&plane_state->fb, fb);
>  }
> @@ -1555,6 +1583,7 @@ int
>  drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
>  				  struct drm_crtc *crtc)
>  {
> +	struct drm_connector *connector = conn_state->connector;
>  	struct drm_crtc_state *crtc_state;
>  
>  	if (conn_state->crtc == crtc)
> @@ -1582,10 +1611,12 @@ drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
>  		drm_connector_get(conn_state->connector);
>  		conn_state->crtc = crtc;
>  
> -		DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n",
> +		DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [CRTC:%d:%s]\n",
> +				 connector->base.id, connector->name,
>  				 conn_state, crtc->base.id, crtc->name);
>  	} else {
> -		DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n",
> +		DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [NOCRTC]\n",
> +				 connector->base.id, connector->name,
>  				 conn_state);
>  	}
>  
> @@ -1681,6 +1712,9 @@ drm_atomic_add_affected_planes(struct drm_atomic_state *state,
>  
>  	WARN_ON(!drm_atomic_get_new_crtc_state(state, crtc));
>  
> +	DRM_DEBUG_ATOMIC("Adding all current planes for [CRTC:%d:%s] to %p\n",
> +			 crtc->base.id, crtc->name, state);
> +
>  	drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) {
>  		struct drm_plane_state *plane_state =
>  			drm_atomic_get_plane_state(state, plane);
> 
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