q->sched_debugfs_dir = NULL;
}
+static const char *rq_qos_id_to_name(enum rq_qos_id id)
+{
+ switch (id) {
+ case RQ_QOS_WBT:
+ return "wbt";
+ case RQ_QOS_LATENCY:
+ return "latency";
+ case RQ_QOS_COST:
+ return "cost";
+ case RQ_QOS_IOPRIO:
+ return "ioprio";
+ }
+ return "unknown";
+}
+
void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos)
{
debugfs_remove_recursive(rqos->debugfs_dir);
{
struct elevator_type *e = q->elevator->type;
+ /*
+ * If the parent debugfs directory has not been created yet, return;
+ * We will be called again later on with appropriate parent debugfs
+ * directory from blk_register_queue()
+ */
+ if (!hctx->debugfs_dir)
+ return;
+
if (!e->hctx_debugfs_attrs)
return;