nvme-pci: print the command name of aborted commands

To allow for slightly better debugging, print the command name when
aborting an command.

Signed-off-by: Christoph Hellwig <[e-mail]>
Reviewed-by: Keith Busch <[e-mail]>
Reviewed-by: Sagi Grimberg <[e-mail]>
Reviewed-by: Chaitanya Kulkarni <[e-mail]>
Signed-off-by: Jens Axboe <[e-mail]>

drivers/nvme/host/constants.c

···
 		return nvme_ops[opcode];
 	return "Unknown";
 }
+EXPORT_SYMBOL_GPL(nvme_get_opcode_str);
 
 const unsigned char *nvme_get_admin_opcode_str(u8 opcode)
 {

drivers/nvme/host/pci.c

···
 	cmd.abort.sqid = cpu_to_le16(nvmeq->qid);
 
 	dev_warn(nvmeq->dev->ctrl.device,
-		"I/O %d QID %d timeout, aborting\n",
-		 req->tag, nvmeq->qid);
+		"I/O %d (%s) QID %d timeout, aborting\n",
+		 req->tag,
+		 nvme_get_opcode_str(nvme_req(req)->cmd->common.opcode),
+		 nvmeq->qid);
 
 	abort_req = blk_mq_alloc_request(dev->ctrl.admin_q, nvme_req_op(&cmd),
 					 BLK_MQ_REQ_NOWAIT);