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drm/debugfs: create debugfs late register functions 

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>
Reviewed-by: Melissa Wen <mwen@igalia.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maíra Canal <mairacanal@riseup.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20221219120621.15086-4-mcanal@igalia.com
This commit is contained in:
Maíra Canal 2022-12-19 09:06:17 -03:00 committed by Maíra Canal
parent 6fd80729f1
commit dbb23cf571
3 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/gpu/drm/drm_debugfs.c
View File

@ -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)
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)

5
drivers/gpu/drm/drm_internal.h
View File

@ -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)
{
}

2
drivers/gpu/drm/drm_mode_config.c
View File

@ -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: