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drm: move drm based debugfs funcs to drm_debugfs.c

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Requirement is to create per client-id based directories to
hold key debugging information and for that access to
root debugfs dentry is need which is not in one place
and that information cannot be stored in drm_device.

Move the debugfs functionality from drm_drv.c and drm_accel.c
to drm_debugfs.c This enables debugfs root node reference
directly drm_debugfs.c and hence enable to create per client-id
directory.

v8: Create drm_accel dentry only if it's config is enabled (Jeff, Hugo)
v8: Merge drm_drv and drm_accel debugfs patches (Koenig, Christian)

v10: Since we moved drm_debugfs_root, hence to handle drm bridge
debugfs add a new function which call drm_bridge_debugfs_params where
drm_debugfs_root is accessible.

Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Link: https://lore.kernel.org/r/20250704075548.1549849-2-sunil.khatri@amd.com
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Sunil Khatri
2025-07-04 13:25:45 +05:30
committed by Christian König
parent 9cbc40521b
commit 348fe34a61
6 changed files with 55 additions and 44 deletions
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16
drivers/gpu/drm/drm_drv.c
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@@ -72,8 +72,6 @@ DEFINE_XARRAY_ALLOC(drm_minors_xa);
*/
static bool drm_core_init_complete;
static struct dentry *drm_debugfs_root;
DEFINE_STATIC_SRCU(drm_unplug_srcu);
/*
@@ -186,8 +184,7 @@ static int drm_minor_register(struct drm_device *dev, enum drm_minor_type type)
return 0;
if (minor->type != DRM_MINOR_ACCEL) {
ret = drm_debugfs_register(minor, minor->index,
drm_debugfs_root);
ret = drm_debugfs_register(minor, minor->index);
if (ret) {
DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
goto err_debugfs;
@@ -787,10 +784,7 @@ 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);
drm_debugfs_dev_init(dev);
return 0;
@@ -1230,7 +1224,7 @@ static void drm_core_exit(void)
drm_panic_exit();
accel_core_exit();
unregister_chrdev(DRM_MAJOR, "drm");
debugfs_remove(drm_debugfs_root);
drm_debugfs_remove_root();
drm_sysfs_destroy();
WARN_ON(!xa_empty(&drm_minors_xa));
drm_connector_ida_destroy();
@@ -1249,8 +1243,8 @@ static int __init drm_core_init(void)
goto error;
}
drm_debugfs_root = debugfs_create_dir("dri", NULL);
drm_bridge_debugfs_params(drm_debugfs_root);
drm_debugfs_init_root();
drm_debugfs_bridge_params();
ret = register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops);
if (ret < 0)