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qla2x00t-32gbit: Fix IOPS drop seen in some adapters

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Removing the response queue processing in the send path is showing IOPS
drop. Add back the process_response_queue() call in the send path.

Link: https://lore.kernel.org/r/20210329085229.4367-2-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
[ commit bcafad6c2d520df42c86f28357d639deac15bad7 upstream ]



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9401 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2021-05-15 22:28:25 +00:00
parent a5b92ce245
commit 69743a4fda
1 changed files with 19 additions and 0 deletions
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19
qla2x00t-32gbit/qla_iocb.c
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@@ -1606,12 +1606,14 @@ qla24xx_start_scsi(srb_t *sp)
uint16_t req_cnt;
uint16_t tot_dsds;
struct req_que *req = NULL;
struct rsp_que *rsp;
struct scsi_cmnd *cmd = GET_CMD_SP(sp);
struct scsi_qla_host *vha = sp->vha;
struct qla_hw_data *ha = vha->hw;
/* Setup device pointers. */
req = vha->req;
rsp = req->rsp;
/* So we know we haven't pci_map'ed anything yet */
tot_dsds = 0;
@@ -1713,6 +1715,11 @@ qla24xx_start_scsi(srb_t *sp)
/* Set chip new ring index. */
wrt_reg_dword(req->req_q_in, req->ring_index);
/* Manage unprocessed RIO/ZIO commands in response queue. */
if (vha->flags.process_response_queue &&
rsp->ring_ptr->signature != RESPONSE_PROCESSED)
qla24xx_process_response_queue(vha, rsp);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return QLA_SUCCESS;
@@ -1903,6 +1910,11 @@ qla24xx_dif_start_scsi(srb_t *sp)
/* Set chip new ring index. */
wrt_reg_dword(req->req_q_in, req->ring_index);
/* Manage unprocessed RIO/ZIO commands in response queue. */
if (vha->flags.process_response_queue &&
rsp->ring_ptr->signature != RESPONSE_PROCESSED)
qla24xx_process_response_queue(vha, rsp);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return QLA_SUCCESS;
@@ -1937,6 +1949,7 @@ qla2xxx_start_scsi_mq(srb_t *sp)
uint16_t req_cnt;
uint16_t tot_dsds;
struct req_que *req = NULL;
struct rsp_que *rsp;
struct scsi_cmnd *cmd = GET_CMD_SP(sp);
struct scsi_qla_host *vha = sp->fcport->vha;
struct qla_hw_data *ha = vha->hw;
@@ -1947,6 +1960,7 @@ qla2xxx_start_scsi_mq(srb_t *sp)
/* Setup qpair pointers */
req = qpair->req;
rsp = qpair->rsp;
/* So we know we haven't pci_map'ed anything yet */
tot_dsds = 0;
@@ -2047,6 +2061,11 @@ qla2xxx_start_scsi_mq(srb_t *sp)
/* Set chip new ring index. */
wrt_reg_dword(req->req_q_in, req->ring_index);
/* Manage unprocessed RIO/ZIO commands in response queue. */
if (vha->flags.process_response_queue &&
rsp->ring_ptr->signature != RESPONSE_PROCESSED)
qla24xx_process_response_queue(vha, rsp);
spin_unlock_irqrestore(&qpair->qp_lock, flags);
return QLA_SUCCESS;