[PATCH 1/5] drm/debugfs: drop debugfs_init() for the render and accel node v2

[PATCH 1/5] drm/debugfs: drop debugfs_init() for the render and accel node v2

[Christian König]

We want to remove per minor debugfs directories. Start by stopping
drivers from adding anything inside of those in the mid layer callback.

v2: drop it for the accel node as well

Signed-off-by: Christian König <christian.koenig@amd.com>
---
 drivers/accel/drm_accel.c     | 3 ---
 drivers/gpu/drm/drm_debugfs.c | 2 +-
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/accel/drm_accel.c b/drivers/accel/drm_accel.c
index 1b69824286fd..d473388ee807 100644
--- a/drivers/accel/drm_accel.c
+++ b/drivers/accel/drm_accel.c
@@ -99,9 +99,6 @@ void accel_debugfs_init(struct drm_minor *minor, int minor_id)
 
 	drm_debugfs_create_files(accel_debugfs_list, ACCEL_DEBUGFS_ENTRIES,
 				 minor->debugfs_root, minor);
-
-	if (dev->driver->debugfs_init)
-		dev->driver->debugfs_init(minor);
 }
 
 /**
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 4855230ba2c6..54376e2400bb 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -242,7 +242,7 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
 		drm_client_debugfs_init(minor);
 	}
 
-	if (dev->driver->debugfs_init)
+	if (dev->driver->debugfs_init && dev->render != minor)
 		dev->driver->debugfs_init(minor);
 
 	list_for_each_entry_safe(entry, tmp, &dev->debugfs_list, list) {
-- 
2.34.1

[PATCH 1/5] drm/debugfs: drop debugfs_init() for the render and accel node v2

[Christian König]

We want to remove per minor debugfs directories. Start by stopping
drivers from adding anything inside of those in the mid layer callback.

v2: drop it for the accel node as well

Signed-off-by: Christian König <christian.koenig@amd.com>
---
 drivers/accel/drm_accel.c     | 3 ---
 drivers/gpu/drm/drm_debugfs.c | 2 +-
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/accel/drm_accel.c b/drivers/accel/drm_accel.c
index 1b69824286fd..d473388ee807 100644
--- a/drivers/accel/drm_accel.c
+++ b/drivers/accel/drm_accel.c
@@ -99,9 +99,6 @@ void accel_debugfs_init(struct drm_minor *minor, int minor_id)
 
 	drm_debugfs_create_files(accel_debugfs_list, ACCEL_DEBUGFS_ENTRIES,
 				 minor->debugfs_root, minor);
-
-	if (dev->driver->debugfs_init)
-		dev->driver->debugfs_init(minor);
 }
 
 /**
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 4855230ba2c6..54376e2400bb 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -242,7 +242,7 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
 		drm_client_debugfs_init(minor);
 	}
 
-	if (dev->driver->debugfs_init)
+	if (dev->driver->debugfs_init && dev->render != minor)
 		dev->driver->debugfs_init(minor);
 
 	list_for_each_entry_safe(entry, tmp, &dev->debugfs_list, list) {
-- 
2.34.1

[PATCH 2/5] drm/debugfs: disallow debugfs access when device isn't registered

[Christian König]

During device bringup it might be that we can't access the debugfs files.
Return -ENODEV until the registration is completed on access.

Signed-off-by: Christian König <christian.koenig@amd.com>
---
 drivers/gpu/drm/drm_debugfs.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 54376e2400bb..796cda62ad12 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -148,6 +148,9 @@ static int drm_debugfs_open(struct inode *inode, struct file *file)
 {
 	struct drm_info_node *node = inode->i_private;
 
+	if (!device_is_registered(node->minor->kdev))
+		return -ENODEV;
+
 	return single_open(file, node->info_ent->show, node);
 }
 
@@ -155,6 +158,10 @@ static int drm_debugfs_entry_open(struct inode *inode, struct file *file)
 {
 	struct drm_debugfs_entry *entry = inode->i_private;
 	struct drm_debugfs_info *node = &entry->file;
+	struct drm_minor *minor = entry->dev->primary ?: entry->dev->accel;
+
+	if (!device_is_registered(minor->kdev))
+		return -ENODEV;
 
 	return single_open(file, node->show, entry);
 }
-- 
2.34.1

[PATCH 3/5] drm/debugfs: rework debugfs directory creation v4

[Christian König]

Instead of the per minor directories only create a single debugfs
directory for the whole device directly when the device is initialized.

For DRM devices each minor gets a symlink to the per device directory
for now until we can be sure that this isn't useful any more in any way.

Accel devices create only the per device directory and also drops the mid
layer callback to create driver specific files.

v2: cleanup accel component as well
v3: fix typo when debugfs is disabled
v4: call drm_debugfs_dev_fini() during release as well,
    some kerneldoc typos fixed

Signed-off-by: Christian König <christian.koenig@amd.com>
---
 drivers/accel/drm_accel.c           | 27 +++++++----
 drivers/gpu/drm/drm_atomic.c        |  4 +-
 drivers/gpu/drm/drm_client.c        |  4 +-
 drivers/gpu/drm/drm_crtc_internal.h |  2 +-
 drivers/gpu/drm/drm_debugfs.c       | 73 ++++++++++++++++++++---------
 drivers/gpu/drm/drm_drv.c           | 21 +++++++--
 drivers/gpu/drm/drm_framebuffer.c   |  4 +-
 drivers/gpu/drm/drm_internal.h      | 20 ++++++--
 include/drm/drm_accel.h             |  9 +++-
 include/drm/drm_client.h            |  2 +-
 include/drm/drm_device.h            |  7 +++
 include/drm/drm_drv.h               |  8 ++++
 include/drm/drm_file.h              |  1 +
 13 files changed, 130 insertions(+), 52 deletions(-)

diff --git a/drivers/accel/drm_accel.c b/drivers/accel/drm_accel.c
index d473388ee807..34fda8a9b829 100644
--- a/drivers/accel/drm_accel.c
+++ b/drivers/accel/drm_accel.c
@@ -79,26 +79,33 @@ static const struct drm_info_list accel_debugfs_list[] = {
 #define ACCEL_DEBUGFS_ENTRIES ARRAY_SIZE(accel_debugfs_list)
 
 /**
- * accel_debugfs_init() - Initialize debugfs for accel minor
+ * accel_debugfs_init() - Initialize debugfs for device
+ * @dev: Pointer to the device instance.
+ *
+ * This function creates a root directory for the device in debugfs.
+ */
+void accel_debugfs_init(struct drm_device *dev)
+{
+	drm_debugfs_dev_init(dev, accel_debugfs_root);
+}
+
+/**
+ * accel_debugfs_register() - Register debugfs for device
  * @minor: Pointer to the drm_minor instance.
  * @minor_id: The minor's id
  *
- * This function initializes the drm minor's debugfs members and creates
- * a root directory for the minor in debugfs. It also creates common files
- * for accelerators and calls the driver's debugfs init callback.
+ * Creates common files for accelerators.
  */
-void accel_debugfs_init(struct drm_minor *minor, int minor_id)
+void accel_debugfs_register(struct drm_device *dev)
 {
-	struct drm_device *dev = minor->dev;
-	char name[64];
+	struct drm_minor *minor = dev->accel;
 
 	INIT_LIST_HEAD(&minor->debugfs_list);
 	mutex_init(&minor->debugfs_lock);
-	sprintf(name, "%d", minor_id);
-	minor->debugfs_root = debugfs_create_dir(name, accel_debugfs_root);
+	minor->debugfs_root = dev->debugfs_root;
 
 	drm_debugfs_create_files(accel_debugfs_list, ACCEL_DEBUGFS_ENTRIES,
-				 minor->debugfs_root, minor);
+				 dev->debugfs_root, minor);
 }
 
 /**
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index b4c6ffc438da..87d0269f063a 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1831,9 +1831,9 @@ static const struct drm_debugfs_info drm_atomic_debugfs_list[] = {
 	{"state", drm_state_info, 0},
 };
 
-void drm_atomic_debugfs_init(struct drm_minor *minor)
+void drm_atomic_debugfs_init(struct drm_device *dev)
 {
-	drm_debugfs_add_files(minor->dev, drm_atomic_debugfs_list,
+	drm_debugfs_add_files(dev, drm_atomic_debugfs_list,
 			      ARRAY_SIZE(drm_atomic_debugfs_list));
 }
 #endif
diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c
index f6292ba0e6fc..a91132276f21 100644
--- a/drivers/gpu/drm/drm_client.c
+++ b/drivers/gpu/drm/drm_client.c
@@ -514,9 +514,9 @@ static const struct drm_debugfs_info drm_client_debugfs_list[] = {
 	{ "internal_clients", drm_client_debugfs_internal_clients, 0 },
 };
 
-void drm_client_debugfs_init(struct drm_minor *minor)
+void drm_client_debugfs_init(struct drm_device *dev)
 {
-	drm_debugfs_add_files(minor->dev, drm_client_debugfs_list,
+	drm_debugfs_add_files(dev, drm_client_debugfs_list,
 			      ARRAY_SIZE(drm_client_debugfs_list));
 }
 #endif
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
index 501a10edd0e1..8556c3b3ff88 100644
--- a/drivers/gpu/drm/drm_crtc_internal.h
+++ b/drivers/gpu/drm/drm_crtc_internal.h
@@ -232,7 +232,7 @@ int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
 /* drm_atomic.c */
 #ifdef CONFIG_DEBUG_FS
 struct drm_minor;
-void drm_atomic_debugfs_init(struct drm_minor *minor);
+void drm_atomic_debugfs_init(struct drm_device *dev);
 #endif
 
 int __drm_atomic_helper_disable_plane(struct drm_plane *plane,
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 796cda62ad12..65b6e0aae96e 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -225,8 +225,44 @@ void drm_debugfs_create_files(const struct drm_info_list *files, int count,
 }
 EXPORT_SYMBOL(drm_debugfs_create_files);
 
-int drm_debugfs_init(struct drm_minor *minor, int minor_id,
-		     struct dentry *root)
+/**
+ * drm_debugfs_dev_init - create debugfs directory for the device
+ * @dev: the device which we want to create the directory for
+ * @root: the parent directory depending on the device type
+ *
+ * Creates the debugfs directory for the device under the given root directory.
+ */
+void drm_debugfs_dev_init(struct drm_device *dev, struct dentry *root)
+{
+	dev->debugfs_root = debugfs_create_dir(dev->unique, root);
+}
+
+/**
+ * drm_debugfs_dev_fini - cleanup debugfs directory
+ * @dev: the device to cleanup the debugfs stuff
+ *
+ * Remove the debugfs directory, might be called multiple times.
+ */
+void drm_debugfs_dev_fini(struct drm_device *dev)
+{
+	debugfs_remove_recursive(dev->debugfs_root);
+	dev->debugfs_root = NULL;
+}
+
+void drm_debugfs_dev_register(struct drm_device *dev)
+{
+	drm_debugfs_add_files(dev, drm_debugfs_list, DRM_DEBUGFS_ENTRIES);
+
+	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+		drm_framebuffer_debugfs_init(dev);
+		drm_client_debugfs_init(dev);
+	}
+	if (drm_drv_uses_atomic_modeset(dev))
+		drm_atomic_debugfs_init(dev);
+}
+
+int drm_debugfs_register(struct drm_minor *minor, int minor_id,
+			 struct dentry *root)
 {
 	struct drm_device *dev = minor->dev;
 	struct drm_debugfs_entry *entry, *tmp;
@@ -235,19 +271,11 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
 	INIT_LIST_HEAD(&minor->debugfs_list);
 	mutex_init(&minor->debugfs_lock);
 	sprintf(name, "%d", minor_id);
-	minor->debugfs_root = debugfs_create_dir(name, root);
-
-	drm_debugfs_add_files(minor->dev, drm_debugfs_list, DRM_DEBUGFS_ENTRIES);
+	minor->debugfs_symlink = debugfs_create_symlink(name, root,
+							dev->unique);
 
-	if (drm_drv_uses_atomic_modeset(dev)) {
-		drm_atomic_debugfs_init(minor);
-	}
-
-	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
-		drm_framebuffer_debugfs_init(minor);
-
-		drm_client_debugfs_init(minor);
-	}
+	/* TODO: Only for compatibility with drivers */
+	minor->debugfs_root = dev->debugfs_root;
 
 	if (dev->driver->debugfs_init && dev->render != minor)
 		dev->driver->debugfs_init(minor);
@@ -314,13 +342,12 @@ static void drm_debugfs_remove_all_files(struct drm_minor *minor)
 
 void drm_debugfs_cleanup(struct drm_minor *minor)
 {
-	if (!minor->debugfs_root)
+	if (!minor->debugfs_symlink)
 		return;
 
 	drm_debugfs_remove_all_files(minor);
-
-	debugfs_remove_recursive(minor->debugfs_root);
-	minor->debugfs_root = NULL;
+	debugfs_remove(minor->debugfs_symlink);
+	minor->debugfs_symlink = NULL;
 }
 
 /**
@@ -505,13 +532,13 @@ static const struct file_operations drm_connector_fops = {
 
 void drm_debugfs_connector_add(struct drm_connector *connector)
 {
-	struct drm_minor *minor = connector->dev->primary;
+	struct drm_device *dev = connector->dev;
 	struct dentry *root;
 
-	if (!minor->debugfs_root)
+	if (!dev->debugfs_root)
 		return;
 
-	root = debugfs_create_dir(connector->name, minor->debugfs_root);
+	root = debugfs_create_dir(connector->name, dev->debugfs_root);
 	connector->debugfs_entry = root;
 
 	/* force */
@@ -546,7 +573,7 @@ void drm_debugfs_connector_remove(struct drm_connector *connector)
 
 void drm_debugfs_crtc_add(struct drm_crtc *crtc)
 {
-	struct drm_minor *minor = crtc->dev->primary;
+	struct drm_device *dev = crtc->dev;
 	struct dentry *root;
 	char *name;
 
@@ -554,7 +581,7 @@ void drm_debugfs_crtc_add(struct drm_crtc *crtc)
 	if (!name)
 		return;
 
-	root = debugfs_create_dir(name, minor->debugfs_root);
+	root = debugfs_create_dir(name, dev->debugfs_root);
 	kfree(name);
 
 	crtc->debugfs_entry = root;
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index cee0cc522ed9..9505c4c3f10e 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -172,10 +172,9 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
 	if (!minor)
 		return 0;
 
-	if (minor->type == DRM_MINOR_ACCEL) {
-		accel_debugfs_init(minor, minor->index);
-	} else {
-		ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
+	if (minor->type != DRM_MINOR_ACCEL) {
+		ret = drm_debugfs_register(minor, minor->index,
+					   drm_debugfs_root);
 		if (ret) {
 			DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
 			goto err_debugfs;
@@ -697,6 +696,11 @@ static int drm_dev_init(struct drm_device *dev,
 		goto err;
 	}
 
+	if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL))
+		accel_debugfs_init(dev);
+	else
+		drm_debugfs_dev_init(dev, drm_debugfs_root);
+
 	return 0;
 
 err:
@@ -786,6 +790,9 @@ static void drm_dev_release(struct kref *ref)
 {
 	struct drm_device *dev = container_of(ref, struct drm_device, ref);
 
+	/* Just in case register/unregister was never called */
+	drm_debugfs_dev_fini(dev);
+
 	if (dev->driver->release)
 		dev->driver->release(dev);
 
@@ -916,6 +923,11 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
 	if (drm_dev_needs_global_mutex(dev))
 		mutex_lock(&drm_global_mutex);
 
+	if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL))
+		accel_debugfs_register(dev);
+	else
+		drm_debugfs_dev_register(dev);
+
 	ret = drm_minor_register(dev, DRM_MINOR_RENDER);
 	if (ret)
 		goto err_minors;
@@ -999,6 +1011,7 @@ void drm_dev_unregister(struct drm_device *dev)
 	drm_minor_unregister(dev, DRM_MINOR_ACCEL);
 	drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
 	drm_minor_unregister(dev, DRM_MINOR_RENDER);
+	drm_debugfs_dev_fini(dev);
 }
 EXPORT_SYMBOL(drm_dev_unregister);
 
diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
index aff3746dedfb..ba51deb6d042 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -1222,9 +1222,9 @@ static const struct drm_debugfs_info drm_framebuffer_debugfs_list[] = {
 	{ "framebuffer", drm_framebuffer_info, 0 },
 };
 
-void drm_framebuffer_debugfs_init(struct drm_minor *minor)
+void drm_framebuffer_debugfs_init(struct drm_device *dev)
 {
-	drm_debugfs_add_files(minor->dev, drm_framebuffer_debugfs_list,
+	drm_debugfs_add_files(dev, drm_framebuffer_debugfs_list,
 			      ARRAY_SIZE(drm_framebuffer_debugfs_list));
 }
 #endif
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index d7e023bbb0d5..bf4a4f24bd4c 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -180,8 +180,10 @@ void drm_gem_vunmap(struct drm_gem_object *obj, struct iosys_map *map);
 
 /* drm_debugfs.c drm_debugfs_crc.c */
 #if defined(CONFIG_DEBUG_FS)
-int drm_debugfs_init(struct drm_minor *minor, int minor_id,
-		     struct dentry *root);
+void drm_debugfs_dev_fini(struct drm_device *dev);
+void drm_debugfs_dev_register(struct drm_device *dev);
+int drm_debugfs_register(struct drm_minor *minor, int minor_id,
+			 struct dentry *root);
 void drm_debugfs_cleanup(struct drm_minor *minor);
 void drm_debugfs_late_register(struct drm_device *dev);
 void drm_debugfs_connector_add(struct drm_connector *connector);
@@ -190,8 +192,16 @@ void drm_debugfs_crtc_add(struct drm_crtc *crtc);
 void drm_debugfs_crtc_remove(struct drm_crtc *crtc);
 void drm_debugfs_crtc_crc_add(struct drm_crtc *crtc);
 #else
-static inline int drm_debugfs_init(struct drm_minor *minor, int minor_id,
-				   struct dentry *root)
+static inline void drm_debugfs_dev_fini(struct drm_device *dev)
+{
+}
+
+static inline void drm_debugfs_dev_register(struct drm_device *dev)
+{
+}
+
+static inline int drm_debugfs_register(struct drm_minor *minor, int minor_id,
+				       struct dentry *root)
 {
 	return 0;
 }
@@ -257,4 +267,4 @@ int drm_syncobj_query_ioctl(struct drm_device *dev, void *data,
 /* drm_framebuffer.c */
 void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent,
 				const struct drm_framebuffer *fb);
-void drm_framebuffer_debugfs_init(struct drm_minor *minor);
+void drm_framebuffer_debugfs_init(struct drm_device *dev);
diff --git a/include/drm/drm_accel.h b/include/drm/drm_accel.h
index d4955062c77e..f4d3784b1dce 100644
--- a/include/drm/drm_accel.h
+++ b/include/drm/drm_accel.h
@@ -58,7 +58,8 @@ int accel_minor_alloc(void);
 void accel_minor_replace(struct drm_minor *minor, int index);
 void accel_set_device_instance_params(struct device *kdev, int index);
 int accel_open(struct inode *inode, struct file *filp);
-void accel_debugfs_init(struct drm_minor *minor, int minor_id);
+void accel_debugfs_init(struct drm_device *dev);
+void accel_debugfs_register(struct drm_device *dev);
 
 #else
 
@@ -89,7 +90,11 @@ static inline void accel_set_device_instance_params(struct device *kdev, int ind
 {
 }
 
-static inline void accel_debugfs_init(struct drm_minor *minor, int minor_id)
+static inline void accel_debugfs_init(struct drm_device *dev)
+{
+}
+
+static inline void accel_debugfs_register(struct drm_device *dev)
 {
 }
 
diff --git a/include/drm/drm_client.h b/include/drm/drm_client.h
index c0a14b40c039..d47458ecdac4 100644
--- a/include/drm/drm_client.h
+++ b/include/drm/drm_client.h
@@ -195,6 +195,6 @@ int drm_client_modeset_dpms(struct drm_client_dev *client, int mode);
 	drm_for_each_connector_iter(connector, iter) \
 		if (connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK)
 
-void drm_client_debugfs_init(struct drm_minor *minor);
+void drm_client_debugfs_init(struct drm_device *dev);
 
 #endif
diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h
index 7cf4afae2e79..3cf12b14232d 100644
--- a/include/drm/drm_device.h
+++ b/include/drm/drm_device.h
@@ -311,6 +311,13 @@ struct drm_device {
 	 */
 	struct drm_fb_helper *fb_helper;
 
+	/**
+	 * @debugfs_root:
+	 *
+	 * Root directory for debugfs files.
+	 */
+	struct dentry *debugfs_root;
+
 	/**
 	 * @debugfs_mutex:
 	 *
diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h
index b419c59c4bef..14d5337f4297 100644
--- a/include/drm/drm_drv.h
+++ b/include/drm/drm_drv.h
@@ -590,4 +590,12 @@ static inline bool drm_firmware_drivers_only(void)
 	return video_firmware_drivers_only();
 }
 
+#if defined(CONFIG_DEBUG_FS)
+void drm_debugfs_dev_init(struct drm_device *dev, struct dentry *root);
+#else
+static void drm_debugfs_dev_init(struct drm_device *dev, struct dentry *root)
+{
+}
+#endif
+
 #endif
diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
index ecffe24e2b1b..1fe08fcaa149 100644
--- a/include/drm/drm_file.h
+++ b/include/drm/drm_file.h
@@ -78,6 +78,7 @@ struct drm_minor {
 	struct device *kdev;		/* Linux device */
 	struct drm_device *dev;
 
+	struct dentry *debugfs_symlink;
 	struct dentry *debugfs_root;
 
 	struct list_head debugfs_list;
-- 
2.34.1

[PATCH 4/5] drm/debugfs: remove dev->debugfs_list and debugfs_mutex v2

[Christian König]

The mutex was completely pointless in the first place since any
parallel adding of files to this list would result in random
behavior since the list is filled and consumed multiple times.

Completely drop that approach and just create the files directly but
return -ENODEV while opening the file when the minors are not
registered yet.

v2: rebase on debugfs directory rework, limit access before minors are
    registered.

Signed-off-by: Christian König <christian.koenig@amd.com>
---
 drivers/gpu/drm/drm_debugfs.c     | 27 ++-------------------------
 drivers/gpu/drm/drm_drv.c         |  3 ---
 drivers/gpu/drm/drm_internal.h    |  5 -----
 drivers/gpu/drm/drm_mode_config.c |  2 --
 include/drm/drm_device.h          | 15 ---------------
 5 files changed, 2 insertions(+), 50 deletions(-)

diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 65b6e0aae96e..d723143852e3 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -265,7 +265,6 @@ int drm_debugfs_register(struct drm_minor *minor, int minor_id,
 			 struct dentry *root)
 {
 	struct drm_device *dev = minor->dev;
-	struct drm_debugfs_entry *entry, *tmp;
 	char name[64];
 
 	INIT_LIST_HEAD(&minor->debugfs_list);
@@ -280,30 +279,9 @@ int drm_debugfs_register(struct drm_minor *minor, int minor_id,
 	if (dev->driver->debugfs_init && dev->render != minor)
 		dev->driver->debugfs_init(minor);
 
-	list_for_each_entry_safe(entry, tmp, &dev->debugfs_list, list) {
-		debugfs_create_file(entry->file.name, 0444,
-				    minor->debugfs_root, entry, &drm_debugfs_entry_fops);
-		list_del(&entry->list);
-	}
-
 	return 0;
 }
 
-void drm_debugfs_late_register(struct drm_device *dev)
-{
-	struct drm_minor *minor = dev->primary;
-	struct drm_debugfs_entry *entry, *tmp;
-
-	if (!minor)
-		return;
-
-	list_for_each_entry_safe(entry, tmp, &dev->debugfs_list, list) {
-		debugfs_create_file(entry->file.name, 0444,
-				    minor->debugfs_root, entry, &drm_debugfs_entry_fops);
-		list_del(&entry->list);
-	}
-}
-
 int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
 			     struct drm_minor *minor)
 {
@@ -373,9 +351,8 @@ void drm_debugfs_add_file(struct drm_device *dev, const char *name,
 	entry->file.data = data;
 	entry->dev = dev;
 
-	mutex_lock(&dev->debugfs_mutex);
-	list_add(&entry->list, &dev->debugfs_list);
-	mutex_unlock(&dev->debugfs_mutex);
+	debugfs_create_file(name, 0444, dev->debugfs_root, entry,
+			    &drm_debugfs_entry_fops);
 }
 EXPORT_SYMBOL(drm_debugfs_add_file);
 
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 9505c4c3f10e..bc15fbf5a304 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -597,7 +597,6 @@ static void drm_dev_init_release(struct drm_device *dev, void *res)
 	mutex_destroy(&dev->clientlist_mutex);
 	mutex_destroy(&dev->filelist_mutex);
 	mutex_destroy(&dev->struct_mutex);
-	mutex_destroy(&dev->debugfs_mutex);
 	drm_legacy_destroy_members(dev);
 }
 
@@ -638,14 +637,12 @@ static int drm_dev_init(struct drm_device *dev,
 	INIT_LIST_HEAD(&dev->filelist_internal);
 	INIT_LIST_HEAD(&dev->clientlist);
 	INIT_LIST_HEAD(&dev->vblank_event_list);
-	INIT_LIST_HEAD(&dev->debugfs_list);
 
 	spin_lock_init(&dev->event_lock);
 	mutex_init(&dev->struct_mutex);
 	mutex_init(&dev->filelist_mutex);
 	mutex_init(&dev->clientlist_mutex);
 	mutex_init(&dev->master_mutex);
-	mutex_init(&dev->debugfs_mutex);
 
 	ret = drmm_add_action_or_reset(dev, drm_dev_init_release, NULL);
 	if (ret)
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index bf4a4f24bd4c..5a98fd1613ee 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -185,7 +185,6 @@ void drm_debugfs_dev_register(struct drm_device *dev);
 int drm_debugfs_register(struct drm_minor *minor, int minor_id,
 			 struct dentry *root);
 void drm_debugfs_cleanup(struct drm_minor *minor);
-void drm_debugfs_late_register(struct drm_device *dev);
 void drm_debugfs_connector_add(struct drm_connector *connector);
 void drm_debugfs_connector_remove(struct drm_connector *connector);
 void drm_debugfs_crtc_add(struct drm_crtc *crtc);
@@ -210,10 +209,6 @@ static inline void drm_debugfs_cleanup(struct drm_minor *minor)
 {
 }
 
-static inline void drm_debugfs_late_register(struct drm_device *dev)
-{
-}
-
 static inline void drm_debugfs_connector_add(struct drm_connector *connector)
 {
 }
diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c
index 87eb591fe9b5..8525ef851540 100644
--- a/drivers/gpu/drm/drm_mode_config.c
+++ b/drivers/gpu/drm/drm_mode_config.c
@@ -54,8 +54,6 @@ int drm_modeset_register_all(struct drm_device *dev)
 	if (ret)
 		goto err_connector;
 
-	drm_debugfs_late_register(dev);
-
 	return 0;
 
 err_connector:
diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h
index 3cf12b14232d..c490977ee250 100644
--- a/include/drm/drm_device.h
+++ b/include/drm/drm_device.h
@@ -318,21 +318,6 @@ struct drm_device {
 	 */
 	struct dentry *debugfs_root;
 
-	/**
-	 * @debugfs_mutex:
-	 *
-	 * Protects &debugfs_list access.
-	 */
-	struct mutex debugfs_mutex;
-
-	/**
-	 * @debugfs_list:
-	 *
-	 * List of debugfs files to be created by the DRM device. The files
-	 * must be added during drm_dev_register().
-	 */
-	struct list_head debugfs_list;
-
 	/* Everything below here is for legacy driver, never use! */
 	/* private: */
 #if IS_ENABLED(CONFIG_DRM_LEGACY)
-- 
2.34.1

[PATCH 5/5] drm/debugfs: rework drm_debugfs_create_files implementation

[Christian König]

Use managed memory allocation for this. That allows us to not keep
track of all the files any more.

Signed-off-by: Christian König <christian.koenig@amd.com>
---
 drivers/accel/drm_accel.c      |  2 -
 drivers/gpu/drm/drm_debugfs.c  | 75 +++++++++-------------------------
 drivers/gpu/drm/drm_drv.c      |  2 -
 drivers/gpu/drm/drm_internal.h |  5 ---
 drivers/gpu/drm/tegra/dc.c     |  9 +++-
 drivers/gpu/drm/tegra/dsi.c    |  1 +
 drivers/gpu/drm/tegra/hdmi.c   |  3 +-
 drivers/gpu/drm/tegra/sor.c    |  1 +
 include/drm/drm_debugfs.h      |  4 +-
 include/drm/drm_file.h         |  4 --
 10 files changed, 34 insertions(+), 72 deletions(-)

diff --git a/drivers/accel/drm_accel.c b/drivers/accel/drm_accel.c
index 34fda8a9b829..2f42292abd73 100644
--- a/drivers/accel/drm_accel.c
+++ b/drivers/accel/drm_accel.c
@@ -100,8 +100,6 @@ void accel_debugfs_register(struct drm_device *dev)
 {
 	struct drm_minor *minor = dev->accel;
 
-	INIT_LIST_HEAD(&minor->debugfs_list);
-	mutex_init(&minor->debugfs_lock);
 	minor->debugfs_root = dev->debugfs_root;
 
 	drm_debugfs_create_files(accel_debugfs_list, ACCEL_DEBUGFS_ENTRIES,
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index d723143852e3..7aea06cb6be9 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -208,7 +208,7 @@ void drm_debugfs_create_files(const struct drm_info_list *files, int count,
 		if (features && !drm_core_check_all_features(dev, features))
 			continue;
 
-		tmp = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
+		tmp = drmm_kzalloc(dev, sizeof(*tmp), GFP_KERNEL);
 		if (tmp == NULL)
 			continue;
 
@@ -217,14 +217,28 @@ void drm_debugfs_create_files(const struct drm_info_list *files, int count,
 						0444, root, tmp,
 						&drm_debugfs_fops);
 		tmp->info_ent = &files[i];
-
-		mutex_lock(&minor->debugfs_lock);
-		list_add(&tmp->list, &minor->debugfs_list);
-		mutex_unlock(&minor->debugfs_lock);
 	}
 }
 EXPORT_SYMBOL(drm_debugfs_create_files);
 
+int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
+			     struct dentry *root, struct drm_minor *minor)
+{
+	int i;
+
+	for (i = 0; i < count; i++) {
+		struct dentry *dent = debugfs_lookup(files[i].name, root);
+
+		if (!dent)
+			continue;
+
+		drmm_kfree(minor->dev, d_inode(dent)->i_private);
+		debugfs_remove(dent);
+	}
+	return 0;
+}
+EXPORT_SYMBOL(drm_debugfs_remove_files);
+
 /**
  * drm_debugfs_dev_init - create debugfs directory for the device
  * @dev: the device which we want to create the directory for
@@ -267,11 +281,8 @@ int drm_debugfs_register(struct drm_minor *minor, int minor_id,
 	struct drm_device *dev = minor->dev;
 	char name[64];
 
-	INIT_LIST_HEAD(&minor->debugfs_list);
-	mutex_init(&minor->debugfs_lock);
 	sprintf(name, "%d", minor_id);
-	minor->debugfs_symlink = debugfs_create_symlink(name, root,
-							dev->unique);
+	debugfs_create_symlink(name, root, dev->unique);
 
 	/* TODO: Only for compatibility with drivers */
 	minor->debugfs_root = dev->debugfs_root;
@@ -282,52 +293,6 @@ int drm_debugfs_register(struct drm_minor *minor, int minor_id,
 	return 0;
 }
 
-int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
-			     struct drm_minor *minor)
-{
-	struct list_head *pos, *q;
-	struct drm_info_node *tmp;
-	int i;
-
-	mutex_lock(&minor->debugfs_lock);
-	for (i = 0; i < count; i++) {
-		list_for_each_safe(pos, q, &minor->debugfs_list) {
-			tmp = list_entry(pos, struct drm_info_node, list);
-			if (tmp->info_ent == &files[i]) {
-				debugfs_remove(tmp->dent);
-				list_del(pos);
-				kfree(tmp);
-			}
-		}
-	}
-	mutex_unlock(&minor->debugfs_lock);
-	return 0;
-}
-EXPORT_SYMBOL(drm_debugfs_remove_files);
-
-static void drm_debugfs_remove_all_files(struct drm_minor *minor)
-{
-	struct drm_info_node *node, *tmp;
-
-	mutex_lock(&minor->debugfs_lock);
-	list_for_each_entry_safe(node, tmp, &minor->debugfs_list, list) {
-		debugfs_remove(node->dent);
-		list_del(&node->list);
-		kfree(node);
-	}
-	mutex_unlock(&minor->debugfs_lock);
-}
-
-void drm_debugfs_cleanup(struct drm_minor *minor)
-{
-	if (!minor->debugfs_symlink)
-		return;
-
-	drm_debugfs_remove_all_files(minor);
-	debugfs_remove(minor->debugfs_symlink);
-	minor->debugfs_symlink = NULL;
-}
-
 /**
  * drm_debugfs_add_file - Add a given file to the DRM device debugfs file list
  * @dev: drm device for the ioctl
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index bc15fbf5a304..14b448861c91 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -198,7 +198,6 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
 	return 0;
 
 err_debugfs:
-	drm_debugfs_cleanup(minor);
 	return ret;
 }
 
@@ -222,7 +221,6 @@ static void drm_minor_unregister(struct drm_device *dev, unsigned int type)
 
 	device_del(minor->kdev);
 	dev_set_drvdata(minor->kdev, NULL); /* safety belt */
-	drm_debugfs_cleanup(minor);
 }
 
 /*
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index 5a98fd1613ee..a8f20fd58b50 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -184,7 +184,6 @@ void drm_debugfs_dev_fini(struct drm_device *dev);
 void drm_debugfs_dev_register(struct drm_device *dev);
 int drm_debugfs_register(struct drm_minor *minor, int minor_id,
 			 struct dentry *root);
-void drm_debugfs_cleanup(struct drm_minor *minor);
 void drm_debugfs_connector_add(struct drm_connector *connector);
 void drm_debugfs_connector_remove(struct drm_connector *connector);
 void drm_debugfs_crtc_add(struct drm_crtc *crtc);
@@ -205,10 +204,6 @@ static inline int drm_debugfs_register(struct drm_minor *minor, int minor_id,
 	return 0;
 }
 
-static inline void drm_debugfs_cleanup(struct drm_minor *minor)
-{
-}
-
 static inline void drm_debugfs_connector_add(struct drm_connector *connector)
 {
 }
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 6e78416e64b0..d7fdc63a6632 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -1745,8 +1745,15 @@ static void tegra_dc_early_unregister(struct drm_crtc *crtc)
 	unsigned int count = ARRAY_SIZE(debugfs_files);
 	struct drm_minor *minor = crtc->dev->primary;
 	struct tegra_dc *dc = to_tegra_dc(crtc);
+	struct dentry *root;
+
+#ifdef CONFIG_DEBUG_FS
+	root = crtc->debugfs_entry;
+#else
+	root = NULL;
+#endif
 
-	drm_debugfs_remove_files(dc->debugfs_files, count, minor);
+	drm_debugfs_remove_files(dc->debugfs_files, count, root, minor);
 	kfree(dc->debugfs_files);
 	dc->debugfs_files = NULL;
 }
diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index a9870c828374..fbfe92a816d4 100644
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -256,6 +256,7 @@ static void tegra_dsi_early_unregister(struct drm_connector *connector)
 	struct tegra_dsi *dsi = to_dsi(output);
 
 	drm_debugfs_remove_files(dsi->debugfs_files, count,
+				 connector->debugfs_entry,
 				 connector->dev->primary);
 	kfree(dsi->debugfs_files);
 	dsi->debugfs_files = NULL;
diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
index 6eac54ae1205..d953d0a0325a 100644
--- a/drivers/gpu/drm/tegra/hdmi.c
+++ b/drivers/gpu/drm/tegra/hdmi.c
@@ -1114,7 +1114,8 @@ static void tegra_hdmi_early_unregister(struct drm_connector *connector)
 	unsigned int count = ARRAY_SIZE(debugfs_files);
 	struct tegra_hdmi *hdmi = to_hdmi(output);
 
-	drm_debugfs_remove_files(hdmi->debugfs_files, count, minor);
+	drm_debugfs_remove_files(hdmi->debugfs_files, count,
+				 connector->debugfs_entry, minor);
 	kfree(hdmi->debugfs_files);
 	hdmi->debugfs_files = NULL;
 }
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index fbb63d755496..b45c569e6a0b 100644
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -1707,6 +1707,7 @@ static void tegra_sor_early_unregister(struct drm_connector *connector)
 	struct tegra_sor *sor = to_sor(output);
 
 	drm_debugfs_remove_files(sor->debugfs_files, count,
+				 connector->debugfs_entry,
 				 connector->dev->primary);
 	kfree(sor->debugfs_files);
 	sor->debugfs_files = NULL;
diff --git a/include/drm/drm_debugfs.h b/include/drm/drm_debugfs.h
index 7616f457ce70..84ee27dc2317 100644
--- a/include/drm/drm_debugfs.h
+++ b/include/drm/drm_debugfs.h
@@ -126,8 +126,8 @@ struct drm_debugfs_entry {
 void drm_debugfs_create_files(const struct drm_info_list *files,
 			      int count, struct dentry *root,
 			      struct drm_minor *minor);
-int drm_debugfs_remove_files(const struct drm_info_list *files,
-			     int count, struct drm_minor *minor);
+int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
+			     struct dentry *root, struct drm_minor *minor);
 
 void drm_debugfs_add_file(struct drm_device *dev, const char *name,
 			  int (*show)(struct seq_file*, void*), void *data);
diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
index 1fe08fcaa149..e687ce27624e 100644
--- a/include/drm/drm_file.h
+++ b/include/drm/drm_file.h
@@ -78,11 +78,7 @@ struct drm_minor {
 	struct device *kdev;		/* Linux device */
 	struct drm_device *dev;
 
-	struct dentry *debugfs_symlink;
 	struct dentry *debugfs_root;
-
-	struct list_head debugfs_list;
-	struct mutex debugfs_lock; /* Protects debugfs_list. */
 };
 
 /**
-- 
2.34.1

Re: [PATCH 1/5] drm/debugfs: drop debugfs_init() for the render and accel node v2

[Stanislaw Gruszka]

On Mon, Apr 24, 2023 at 02:30:24PM +0200, Christian König wrote:
> We want to remove per minor debugfs directories. Start by stopping
> drivers from adding anything inside of those in the mid layer callback.
> 
> v2: drop it for the accel node as well
> 
> Signed-off-by: Christian König <christian.koenig@amd.com>
Tested-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>

I tested with accel and ivpu driver.

I believe main concern of prevent access before registering
is already solved. Any plans to apply this ? 

Regards
Stanislaw

[PATCH 1/5] drm/debugfs: drop debugfs_init() for the render and accel node v2

[Christian König]

We want to remove per minor debugfs directories. Start by stopping
drivers from adding anything inside of those in the mid layer callback.

v2: drop it for the accel node as well

Signed-off-by: Christian König <christian.koenig@amd.com>
Tested-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
---
 drivers/accel/drm_accel.c     | 3 ---
 drivers/gpu/drm/drm_debugfs.c | 2 +-
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/accel/drm_accel.c b/drivers/accel/drm_accel.c
index 4a9baf02439e..01edf2c00b5a 100644
--- a/drivers/accel/drm_accel.c
+++ b/drivers/accel/drm_accel.c
@@ -99,9 +99,6 @@ void accel_debugfs_init(struct drm_minor *minor, int minor_id)
 
 	drm_debugfs_create_files(accel_debugfs_list, ACCEL_DEBUGFS_ENTRIES,
 				 minor->debugfs_root, minor);
-
-	if (dev->driver->debugfs_init)
-		dev->driver->debugfs_init(minor);
 }
 
 /**
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 4855230ba2c6..54376e2400bb 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -242,7 +242,7 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
 		drm_client_debugfs_init(minor);
 	}
 
-	if (dev->driver->debugfs_init)
+	if (dev->driver->debugfs_init && dev->render != minor)
 		dev->driver->debugfs_init(minor);
 
 	list_for_each_entry_safe(entry, tmp, &dev->debugfs_list, list) {
-- 
2.34.1

[PATCH 1/5] drm/debugfs: drop debugfs_init() for the render and accel node v2

[Christian König]

We want to remove per minor debugfs directories. Start by stopping
drivers from adding anything inside of those in the mid layer callback.

v2: drop it for the accel node as well

Signed-off-by: Christian König <christian.koenig@amd.com>
Tested-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
---
 drivers/accel/drm_accel.c     | 3 ---
 drivers/gpu/drm/drm_debugfs.c | 2 +-
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/accel/drm_accel.c b/drivers/accel/drm_accel.c
index 4a9baf02439e..01edf2c00b5a 100644
--- a/drivers/accel/drm_accel.c
+++ b/drivers/accel/drm_accel.c
@@ -99,9 +99,6 @@ void accel_debugfs_init(struct drm_minor *minor, int minor_id)
 
 	drm_debugfs_create_files(accel_debugfs_list, ACCEL_DEBUGFS_ENTRIES,
 				 minor->debugfs_root, minor);
-
-	if (dev->driver->debugfs_init)
-		dev->driver->debugfs_init(minor);
 }
 
 /**
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 2de43ff3ce0a..d90d0827bfad 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -284,7 +284,7 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
 		drm_client_debugfs_init(minor);
 	}
 
-	if (dev->driver->debugfs_init)
+	if (dev->driver->debugfs_init && dev->render != minor)
 		dev->driver->debugfs_init(minor);
 
 	list_for_each_entry_safe(entry, tmp, &dev->debugfs_list, list) {
-- 
2.34.1

Re: [PATCH 1/5] drm/debugfs: drop debugfs_init() for the render and accel node v2

[Andi Shyti]

Hi Christian,

On Tue, Aug 29, 2023 at 01:01:11PM +0200, Christian König wrote:
> We want to remove per minor debugfs directories. Start by stopping
> drivers from adding anything inside of those in the mid layer callback.
> 
> v2: drop it for the accel node as well
> 
> Signed-off-by: Christian König <christian.koenig@amd.com>
> Tested-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>

Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> 

Thanks,
Andi

Re: [PATCH 1/5] drm/debugfs: drop debugfs_init() for the render and accel node v2

[Christian König]

Am 30.08.23 um 10:19 schrieb Andi Shyti:
> Hi Christian,
>
> On Tue, Aug 29, 2023 at 01:01:11PM +0200, Christian König wrote:
>> We want to remove per minor debugfs directories. Start by stopping
>> drivers from adding anything inside of those in the mid layer callback.
>>
>> v2: drop it for the accel node as well
>>
>> Signed-off-by: Christian König <christian.koenig@amd.com>
>> Tested-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>

Is that for just this patch or the whole series?

Thanks,
Christian.

>
> Thanks,
> Andi

Re: [PATCH 1/5] drm/debugfs: drop debugfs_init() for the render and accel node v2

[Tomer Tayar]

Hi Christian,

On 29/08/2023 14:01, Christian König wrote:
> We want to remove per minor debugfs directories. Start by stopping
> drivers from adding anything inside of those in the mid layer callback.
>
> v2: drop it for the accel node as well
>
> Signed-off-by: Christian König <christian.koenig@amd.com>
> Tested-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
> ---

For the whole series:
Reviewed-by: Tomer Tayar <ttayar@habana.ai>

And at least "accel-wise":
Tested-by: Tomer Tayar <ttayar@habana.ai>

Thanks,
Tomer