scsi: qla2xxx: Performance tweak

Move statistics fields from vha struct to qpair to reduce memory thrashing.

Link: https://lore.kernel.org/r/20200904045128.23631-8-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index d006ae1..1ee747b 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -2726,6 +2726,9 @@ qla2x00_get_fc_host_stats(struct Scsi_Host *shost)
        struct link_statistics *stats;
        dma_addr_t stats_dma;
        struct fc_host_statistics *p = &vha->fc_host_stat;
+       struct qla_qpair *qpair;
+       int i;
+       u64 ib = 0, ob = 0, ir = 0, or = 0;
 
        memset(p, -1, sizeof(*p));
 
@@ -2762,6 +2765,27 @@ qla2x00_get_fc_host_stats(struct Scsi_Host *shost)
        if (rval != QLA_SUCCESS)
                goto done_free;
 
+       /* --- */
+       for (i = 0; i < vha->hw->max_qpairs; i++) {
+               qpair = vha->hw->queue_pair_map[i];
+               if (!qpair)
+                       continue;
+               ir += qpair->counters.input_requests;
+               or += qpair->counters.output_requests;
+               ib += qpair->counters.input_bytes;
+               ob += qpair->counters.output_bytes;
+       }
+       ir += ha->base_qpair->counters.input_requests;
+       or += ha->base_qpair->counters.output_requests;
+       ib += ha->base_qpair->counters.input_bytes;
+       ob += ha->base_qpair->counters.output_bytes;
+
+       ir += vha->qla_stats.input_requests;
+       or += vha->qla_stats.output_requests;
+       ib += vha->qla_stats.input_bytes;
+       ob += vha->qla_stats.output_bytes;
+       /* --- */
+
        p->link_failure_count = le32_to_cpu(stats->link_fail_cnt);
        p->loss_of_sync_count = le32_to_cpu(stats->loss_sync_cnt);
        p->loss_of_signal_count = le32_to_cpu(stats->loss_sig_cnt);
@@ -2781,15 +2805,16 @@ qla2x00_get_fc_host_stats(struct Scsi_Host *shost)
                        p->rx_words = le64_to_cpu(stats->fpm_recv_word_cnt);
                        p->tx_words = le64_to_cpu(stats->fpm_xmit_word_cnt);
                } else {
-                       p->rx_words = vha->qla_stats.input_bytes;
-                       p->tx_words = vha->qla_stats.output_bytes;
+                       p->rx_words = ib >> 2;
+                       p->tx_words = ob >> 2;
                }
        }
+
        p->fcp_control_requests = vha->qla_stats.control_requests;
-       p->fcp_input_requests = vha->qla_stats.input_requests;
-       p->fcp_output_requests = vha->qla_stats.output_requests;
-       p->fcp_input_megabytes = vha->qla_stats.input_bytes >> 20;
-       p->fcp_output_megabytes = vha->qla_stats.output_bytes >> 20;
+       p->fcp_input_requests = ir;
+       p->fcp_output_requests = or;
+       p->fcp_input_megabytes  = ib >> 20;
+       p->fcp_output_megabytes = ob >> 20;
        p->seconds_since_last_reset =
            get_jiffies_64() - vha->qla_stats.jiffies_at_last_reset;
        do_div(p->seconds_since_last_reset, HZ);
@@ -2809,9 +2834,18 @@ qla2x00_reset_host_stats(struct Scsi_Host *shost)
        struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
        struct link_statistics *stats;
        dma_addr_t stats_dma;
+       int i;
+       struct qla_qpair *qpair;
 
        memset(&vha->qla_stats, 0, sizeof(vha->qla_stats));
        memset(&vha->fc_host_stat, 0, sizeof(vha->fc_host_stat));
+       for (i = 0; i < vha->hw->max_qpairs; i++) {
+               qpair = vha->hw->queue_pair_map[i];
+               if (!qpair)
+                       continue;
+               memset(&qpair->counters, 0, sizeof(qpair->counters));
+       }
+       memset(&ha->base_qpair->counters, 0, sizeof(qpair->counters));
 
        vha->qla_stats.jiffies_at_last_reset = get_jiffies_64();
 

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 23438fc..234cc33 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2443,12 +2443,6 @@ typedef struct fc_port {
        struct list_head list;
        struct scsi_qla_host *vha;
 
-       uint8_t node_name[WWN_SIZE];
-       uint8_t port_name[WWN_SIZE];
-       port_id_t d_id;
-       uint16_t loop_id;
-       uint16_t old_loop_id;
-
        unsigned int conf_compl_supported:1;
        unsigned int deleted:2;
        unsigned int free_pending:1;
@@ -2465,6 +2459,13 @@ typedef struct fc_port {
        unsigned int n2n_flag:1;
        unsigned int explicit_logout:1;
        unsigned int prli_pend_timer:1;
+       uint8_t nvme_flag;
+
+       uint8_t node_name[WWN_SIZE];
+       uint8_t port_name[WWN_SIZE];
+       port_id_t d_id;
+       uint16_t loop_id;
+       uint16_t old_loop_id;
 
        struct completion nvme_del_done;
        uint32_t nvme_prli_service_param;
@@ -2473,7 +2474,7 @@ typedef struct fc_port {
 #define NVME_PRLI_SP_TARGET     BIT_4
 #define NVME_PRLI_SP_DISCOVERY  BIT_3
 #define NVME_PRLI_SP_FIRST_BURST       BIT_0
-       uint8_t nvme_flag;
+
        uint32_t nvme_first_burst_size;
 #define NVME_FLAG_REGISTERED 4
 #define NVME_FLAG_DELETING 2
@@ -3510,6 +3511,14 @@ struct qla_tgt_counters {
        uint64_t num_term_xchg_sent;
 };
 
+struct qla_counters {
+       uint64_t input_bytes;
+       uint64_t input_requests;
+       uint64_t output_bytes;
+       uint64_t output_requests;
+
+};
+
 struct qla_qpair;
 
 /* Response queue data structure */
@@ -3594,6 +3603,7 @@ struct qla_qpair {
        uint32_t enable_class_2:1;
        uint32_t enable_explicit_conf:1;
        uint32_t use_shadow_reg:1;
+       uint32_t rcv_intr:1;
 
        uint16_t id;                    /* qp number used with FW */
        uint16_t vp_idx;                /* vport ID */
@@ -3609,13 +3619,16 @@ struct qla_qpair {
        struct qla_msix_entry *msix; /* point to &ha->msix_entries[x] */
        struct qla_hw_data *hw;
        struct work_struct q_work;
+       struct qla_counters counters;
+
        struct list_head qp_list_elem; /* vha->qp_list */
        struct list_head hints_list;
-       uint16_t cpuid;
+
        uint16_t retry_term_cnt;
        __le32  retry_term_exchg_addr;
        uint64_t retry_term_jiff;
        struct qla_tgt_counters tgt_counters;
+       uint16_t cpuid;
 };
 
 /* Place holder for FW buffer parameters */
@@ -4129,6 +4142,10 @@ struct qla_hw_data {
 #define USE_ASYNC_SCAN(ha) (IS_QLA25XX(ha) || IS_QLA81XX(ha) ||\
        IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha))
 
+#define IS_ZIO_THRESHOLD_CAPABLE(ha) \
+       ((IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) &&\
+        (ha->zio_mode == QLA_ZIO_MODE_6))
+
        /* HBA serial number */
        uint8_t         serial0;
        uint8_t         serial1;

diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 5051888..a2914e3 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -3700,9 +3700,7 @@ execute_fw_with_lr:
                                        goto execute_fw_with_lr;
                                }
 
-                               if ((IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
-                                   IS_QLA28XX(ha)) &&
-                                   (ha->zio_mode == QLA_ZIO_MODE_6))
+                               if (IS_ZIO_THRESHOLD_CAPABLE(ha))
                                        qla27xx_set_zio_threshold(vha,
                                            ha->last_zio_threshold);
 

diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index e3d2dea..d69e16e 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -594,6 +594,7 @@ qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt,
        uint32_t dsd_list_len;
        struct dsd_dma *dsd_ptr;
        struct ct6_dsd *ctx;
+       struct qla_qpair *qpair = sp->qpair;
 
        cmd = GET_CMD_SP(sp);
 
@@ -612,12 +613,12 @@ qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt,
        /* Set transfer direction */
        if (cmd->sc_data_direction == DMA_TO_DEVICE) {
                cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
-               vha->qla_stats.output_bytes += scsi_bufflen(cmd);
-               vha->qla_stats.output_requests++;
+               qpair->counters.output_bytes += scsi_bufflen(cmd);
+               qpair->counters.output_requests++;
        } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
                cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
-               vha->qla_stats.input_bytes += scsi_bufflen(cmd);
-               vha->qla_stats.input_requests++;
+               qpair->counters.input_bytes += scsi_bufflen(cmd);
+               qpair->counters.input_requests++;
        }
 
        cur_seg = scsi_sglist(cmd);
@@ -704,6 +705,7 @@ qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt,
        struct scsi_cmnd *cmd;
        struct scatterlist *sg;
        int i;
+       struct qla_qpair *qpair = sp->qpair;
 
        cmd = GET_CMD_SP(sp);
 
@@ -721,12 +723,12 @@ qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt,
        /* Set transfer direction */
        if (cmd->sc_data_direction == DMA_TO_DEVICE) {
                cmd_pkt->task_mgmt_flags = cpu_to_le16(TMF_WRITE_DATA);
-               vha->qla_stats.output_bytes += scsi_bufflen(cmd);
-               vha->qla_stats.output_requests++;
+               qpair->counters.output_bytes += scsi_bufflen(cmd);
+               qpair->counters.output_requests++;
        } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
                cmd_pkt->task_mgmt_flags = cpu_to_le16(TMF_READ_DATA);
-               vha->qla_stats.input_bytes += scsi_bufflen(cmd);
-               vha->qla_stats.input_requests++;
+               qpair->counters.input_bytes += scsi_bufflen(cmd);
+               qpair->counters.input_requests++;
        }
 
        /* One DSD is available in the Command Type 3 IOCB */

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 36c980f..4d59d5b 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -3440,8 +3440,10 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha,
        if (!ha->flags.fw_started)
                return;
 
-       if (rsp->qpair->cpuid != smp_processor_id())
+       if (rsp->qpair->cpuid != smp_processor_id() || !rsp->qpair->rcv_intr) {
+               rsp->qpair->rcv_intr = 1;
                qla_cpu_update(rsp->qpair, smp_processor_id());
+       }
 
        while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
                pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
@@ -3890,7 +3892,7 @@ qla2xxx_msix_rsp_q(int irq, void *dev_id)
        }
        ha = qpair->hw;
 
-       queue_work(ha->wq, &qpair->q_work);
+       queue_work_on(smp_processor_id(), ha->wq, &qpair->q_work);
 
        return IRQ_HANDLED;
 }
@@ -3916,7 +3918,7 @@ qla2xxx_msix_rsp_q_hs(int irq, void *dev_id)
        wrt_reg_dword(&reg->hccr, HCCRX_CLR_RISC_INT);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
 
-       queue_work(ha->wq, &qpair->q_work);
+       queue_work_on(smp_processor_id(), ha->wq, &qpair->q_work);
 
        return IRQ_HANDLED;
 }

diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index 15efe2f..08cfe04 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -808,11 +808,9 @@ static void qla_do_work(struct work_struct *work)
 {
        unsigned long flags;
        struct qla_qpair *qpair = container_of(work, struct qla_qpair, q_work);
-       struct scsi_qla_host *vha;
-       struct qla_hw_data *ha = qpair->hw;
+       struct scsi_qla_host *vha = qpair->vha;
 
        spin_lock_irqsave(&qpair->qp_lock, flags);
-       vha = pci_get_drvdata(ha->pdev);
        qla24xx_process_response_queue(vha, qpair->rsp);
        spin_unlock_irqrestore(&qpair->qp_lock, flags);
 

diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c
index b05e454..b0c1314 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_nvme.c
+++ b/drivers/scsi/qla2xxx/qla_nvme.c
@@ -428,8 +428,8 @@ static inline int qla2x00_start_nvme_mq(srb_t *sp)
        /* No data transfer how do we check buffer len == 0?? */
        if (fd->io_dir == NVMEFC_FCP_READ) {
                cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
-               vha->qla_stats.input_bytes += fd->payload_length;
-               vha->qla_stats.input_requests++;
+               qpair->counters.input_bytes += fd->payload_length;
+               qpair->counters.input_requests++;
        } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
                cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
                if ((vha->flags.nvme_first_burst) &&
@@ -441,8 +441,8 @@ static inline int qla2x00_start_nvme_mq(srb_t *sp)
                                cmd_pkt->control_flags |=
                                        cpu_to_le16(CF_NVME_FIRST_BURST_ENABLE);
                }
-               vha->qla_stats.output_bytes += fd->payload_length;
-               vha->qla_stats.output_requests++;
+               qpair->counters.output_bytes += fd->payload_length;
+               qpair->counters.output_requests++;
        } else if (fd->io_dir == 0) {
                cmd_pkt->control_flags = 0;
        }

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 31bfc0c..78936b5 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -7198,8 +7198,10 @@ qla2x00_timer(struct timer_list *t)
         * FC-NVME
         * see if the active AEN count has changed from what was last reported.
         */
+       index = atomic_read(&ha->nvme_active_aen_cnt);
        if (!vha->vp_idx &&
-           (atomic_read(&ha->nvme_active_aen_cnt) != ha->nvme_last_rptd_aen) &&
+           (index != ha->nvme_last_rptd_aen) &&
+           (index >= DEFAULT_ZIO_THRESHOLD) &&
            ha->zio_mode == QLA_ZIO_MODE_6 &&
            !ha->flags.host_shutting_down) {
                ql_log(ql_log_info, vha, 0x3002,
@@ -7211,9 +7213,8 @@ qla2x00_timer(struct timer_list *t)
        }
 
        if (!vha->vp_idx &&
-           (atomic_read(&ha->zio_threshold) != ha->last_zio_threshold) &&
-           (ha->zio_mode == QLA_ZIO_MODE_6) &&
-           (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha))) {
+           atomic_read(&ha->zio_threshold) != ha->last_zio_threshold &&
+           IS_ZIO_THRESHOLD_CAPABLE(ha)) {
                ql_log(ql_log_info, vha, 0x3002,
                    "Sched: Set ZIO exchange threshold to %d.\n",
                    ha->last_zio_threshold);