idr_for_each
idr_for_each(&file->object_idr, amdgpu_debugfs_gem_bo_info, m);
idr_for_each(&file_private->object_idr,
idr_for_each(&file_private->syncobj_idr,
idr_for_each(&file_priv->context_idr, context_idr_cleanup, NULL);
idr_for_each(&dev_priv->perf.metrics_idr, destroy_config, dev_priv);
int idr_for_each(struct idr *idp, int (*fn)(int id, void *p, void *data), void *data);