4.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Quinn Tran quinn.tran@cavium.com
commit b86ac8fd4b2f6ec2f9ca9194c56eac12d620096f upstream.
This patch improves performance for 16G and above adapter by removing additional call to process_response_queue().
[mkp: typo]
Cc: stable@vger.kernel.org Signed-off-by: Quinn Tran quinn.tran@cavium.com Signed-off-by: Himanshu Madhani himanshu.madhani@cavium.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/scsi/qla2xxx/qla_init.c | 2 -- drivers/scsi/qla2xxx/qla_iocb.c | 17 ----------------- 2 files changed, 19 deletions(-)
--- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -6972,7 +6972,6 @@ qla24xx_nvram_config(scsi_qla_host_t *vh } icb->firmware_options_2 &= cpu_to_le32( ~(BIT_3 | BIT_2 | BIT_1 | BIT_0)); - vha->flags.process_response_queue = 0; if (ha->zio_mode != QLA_ZIO_DISABLED) { ha->zio_mode = QLA_ZIO_MODE_6;
@@ -6983,7 +6982,6 @@ qla24xx_nvram_config(scsi_qla_host_t *vh icb->firmware_options_2 |= cpu_to_le32( (uint32_t)ha->zio_mode); icb->interrupt_delay_timer = cpu_to_le16(ha->zio_timer); - vha->flags.process_response_queue = 1; }
if (rval) { --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -1526,12 +1526,6 @@ qla24xx_start_scsi(srb_t *sp)
/* Set chip new ring index. */ WRT_REG_DWORD(req->req_q_in, req->ring_index); - RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); - - /* 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; @@ -1725,12 +1719,6 @@ qla24xx_dif_start_scsi(srb_t *sp)
/* Set chip new ring index. */ WRT_REG_DWORD(req->req_q_in, req->ring_index); - RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); - - /* 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);
@@ -1880,11 +1868,6 @@ 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;