drm/etnaviv: Add fdinfo support for memory stats

Use the new helper to export stats about memory usage.

Signed-off-by: Christian Gmeiner <[e-mail]>
Reviewed-by: Tvrtko Ursulin <[e-mail]>
Signed-off-by: Lucas Stach <[e-mail]>

drivers/gpu/drm/etnaviv/etnaviv_drv.c

···
 	ETNA_IOCTL(PM_QUERY_SIG, pm_query_sig, DRM_RENDER_ALLOW),
 };
 
-DEFINE_DRM_GEM_FOPS(fops);
+static void etnaviv_show_fdinfo(struct drm_printer *p, struct drm_file *file)
+{
+	drm_show_memory_stats(p, file);
+}
+
+static const struct file_operations fops = {
+	.owner = THIS_MODULE,
+	DRM_GEM_FOPS,
+	.show_fdinfo = drm_show_fdinfo,
+};
 
 static const struct drm_driver etnaviv_drm_driver = {
 	.driver_features    = DRIVER_GEM | DRIVER_RENDER,
···
 #ifdef CONFIG_DEBUG_FS
 	.debugfs_init       = etnaviv_debugfs_init,
 #endif
+	.show_fdinfo        = etnaviv_show_fdinfo,
 	.ioctls             = etnaviv_ioctls,
 	.num_ioctls         = DRM_ETNAVIV_NUM_IOCTLS,
 	.fops               = &fops,

drivers/gpu/drm/etnaviv/etnaviv_gem.c

···
 	mutex_unlock(&priv->gem_lock);
 }
 
+static enum drm_gem_object_status etnaviv_gem_status(struct drm_gem_object *obj)
+{
+	struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
+	enum drm_gem_object_status status = 0;
+
+	if (etnaviv_obj->pages)
+		status |= DRM_GEM_OBJECT_RESIDENT;
+
+	return status;
+}
+
 static const struct vm_operations_struct vm_ops = {
 	.fault = etnaviv_gem_fault,
 	.open = drm_gem_vm_open,
···
 	.get_sg_table = etnaviv_gem_prime_get_sg_table,
 	.vmap = etnaviv_gem_prime_vmap,
 	.mmap = etnaviv_gem_mmap,
+	.status = etnaviv_gem_status,
 	.vm_ops = &vm_ops,
 };