Commit 38c61709 authored Sep 08, 2021 by Shreyas Deodhar Committed by Martin K. Petersen Sep 14, 2021

scsi: qla2xxx: Call process_response_queue() in Tx path

Process responses in Tx path if any available for better performance.

Link: https://lore.kernel.org/r/20210908164622.19240-8-njavali@marvell.com

Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Shreyas Deodhar <sdeodhar@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

parent 3ef68d4f

drivers/scsi/qla2xxx/qla_nvme.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -399,6 +399,7 @@ static inline int qla2x00_start_nvme_mq(srb_t *sp)
		uint16_t avail_dsds;
		struct dsd64 *cur_dsd;
		struct req_que *req = NULL;
		struct rsp_que *rsp = NULL;
		struct scsi_qla_host *vha = sp->fcport->vha;
		struct qla_hw_data *ha = vha->hw;
		struct qla_qpair *qpair = sp->qpair;
		@@ -410,6 +411,7 @@ static inline int qla2x00_start_nvme_mq(srb_t *sp)

		/* Setup qpair pointers */
		req = qpair->req;
		rsp = qpair->rsp;
		tot_dsds = fd->sg_cnt;

		/* Acquire qpair specific lock */
		@@ -571,6 +573,10 @@ static inline int qla2x00_start_nvme_mq(srb_t *sp)
		/* Set chip new ring index. */
		wrt_reg_dword(req->req_q_in, req->ring_index);

		if (vha->flags.process_response_queue &&
		rsp->ring_ptr->signature != RESPONSE_PROCESSED)
		qla24xx_process_response_queue(vha, rsp);

		queuing_error:
		spin_unlock_irqrestore(&qpair->qp_lock, flags);