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Subject[PATCH v4 3/7] drm/debugfs: create debugfs late register functions
Date
Although the device-centered debugfs functions can track requests for
the addition of DRM debugfs files at any time and have them added all
at once during drm_dev_register(), they are not able to create debugfs
files for modeset components, as they are registered after the primary
and the render drm_minor are registered.

So, create a drm_debugfs_late_register() function, which is responsible
for dealing with the creation of all the debugfs files for modeset
components at once. Therefore, the functions drm_debugfs_add_file()
and drm_debugfs_add_files() can be used in late_register hooks.

Signed-off-by: Maíra Canal <mcanal@igalia.com>
---
drivers/gpu/drm/drm_debugfs.c | 14 ++++++++++++++
drivers/gpu/drm/drm_internal.h | 5 +++++
drivers/gpu/drm/drm_mode_config.c | 2 ++
3 files changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index d9d3ed7acc80..51e3772e2e2b 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -254,6 +254,20 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
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 == NULL)
+ return;
+
+ list_for_each_entry_safe(entry, tmp, &dev->debugfs_list, list) {
+ debugfs_create_file(entry->file.name, S_IFREG | S_IRUGO,
+ 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)
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index 5ea5e260118c..ed2103ee272c 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -186,6 +186,7 @@ int drm_gem_dumb_destroy(struct drm_file *file, struct drm_device *dev,
int drm_debugfs_init(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);
@@ -202,6 +203,10 @@ 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 8525ef851540..87eb591fe9b5 100644
--- a/drivers/gpu/drm/drm_mode_config.c
+++ b/drivers/gpu/drm/drm_mode_config.c
@@ -54,6 +54,8 @@ int drm_modeset_register_all(struct drm_device *dev)
if (ret)
goto err_connector;

+ drm_debugfs_late_register(dev);
+
return 0;

err_connector:
--
2.38.1
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