From 22d84726e3b82458dee015c56c88dae8c861436e Mon Sep 17 00:00:00 2001 From: Quinn Tran Date: Tue, 13 Jun 2017 20:47:25 -0700 Subject: [PATCH] scsi: qla2xxx: Add debug logging routine for qpair For target main path io routines that uses qpair, create new logging & debugging routines to use qpair instead of reaching for scsi_qla_host to reduce cache thrash. Signed-off-by: Quinn Tran Signed-off-by: Himanshu Madhani Signed-off-by: Martin K. Petersen --- drivers/scsi/qla2xxx/qla_dbg.c | 101 ++++++++++++++++++++++++++++++++++++++ drivers/scsi/qla2xxx/qla_dbg.h | 6 +++ drivers/scsi/qla2xxx/qla_target.c | 28 +++++------ drivers/scsi/qla2xxx/qla_target.h | 1 + 4 files changed, 122 insertions(+), 14 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c index 11e097e..c0c90dc 100644 --- a/drivers/scsi/qla2xxx/qla_dbg.c +++ b/drivers/scsi/qla2xxx/qla_dbg.c @@ -2713,3 +2713,104 @@ ql_dump_buffer(uint32_t level, scsi_qla_host_t *vha, int32_t id, buf + cnt, min(16U, size - cnt), false); } } + +/* + * This function is for formatting and logging log messages. + * It is to be used when vha is available. It formats the message + * and logs it to the messages file. All the messages will be logged + * irrespective of value of ql2xextended_error_logging. + * parameters: + * level: The level of the log messages to be printed in the + * messages file. + * vha: Pointer to the scsi_qla_host_t + * id: This is a unique id for the level. It identifies the + * part of the code from where the message originated. + * msg: The message to be displayed. + */ +void +ql_log_qp(uint32_t level, struct qla_qpair *qpair, int32_t id, + const char *fmt, ...) +{ + va_list va; + struct va_format vaf; + char pbuf[128]; + + if (level > ql_errlev) + return; + + if (qpair != NULL) { + const struct pci_dev *pdev = qpair->pdev; + /* : Message */ + snprintf(pbuf, sizeof(pbuf), "%s [%s]-%04x: ", + QL_MSGHDR, dev_name(&(pdev->dev)), id); + } else { + snprintf(pbuf, sizeof(pbuf), "%s [%s]-%04x: : ", + QL_MSGHDR, "0000:00:00.0", id); + } + pbuf[sizeof(pbuf) - 1] = 0; + + va_start(va, fmt); + + vaf.fmt = fmt; + vaf.va = &va; + + switch (level) { + case ql_log_fatal: /* FATAL LOG */ + pr_crit("%s%pV", pbuf, &vaf); + break; + case ql_log_warn: + pr_err("%s%pV", pbuf, &vaf); + break; + case ql_log_info: + pr_warn("%s%pV", pbuf, &vaf); + break; + default: + pr_info("%s%pV", pbuf, &vaf); + break; + } + + va_end(va); +} + +/* + * This function is for formatting and logging debug information. + * It is to be used when vha is available. It formats the message + * and logs it to the messages file. + * parameters: + * level: The level of the debug messages to be printed. + * If ql2xextended_error_logging value is correctly set, + * this message will appear in the messages file. + * vha: Pointer to the scsi_qla_host_t. + * id: This is a unique identifier for the level. It identifies the + * part of the code from where the message originated. + * msg: The message to be displayed. + */ +void +ql_dbg_qp(uint32_t level, struct qla_qpair *qpair, int32_t id, + const char *fmt, ...) +{ + va_list va; + struct va_format vaf; + + if (!ql_mask_match(level)) + return; + + va_start(va, fmt); + + vaf.fmt = fmt; + vaf.va = &va; + + if (qpair != NULL) { + const struct pci_dev *pdev = qpair->pdev; + /* : Message */ + pr_warn("%s [%s]-%04x: %pV", + QL_MSGHDR, dev_name(&(pdev->dev)), id + ql_dbg_offset, + &vaf); + } else { + pr_warn("%s [%s]-%04x: : %pV", + QL_MSGHDR, "0000:00:00.0", id + ql_dbg_offset, &vaf); + } + + va_end(va); + +} diff --git a/drivers/scsi/qla2xxx/qla_dbg.h b/drivers/scsi/qla2xxx/qla_dbg.h index c6bffe9..f60138f 100644 --- a/drivers/scsi/qla2xxx/qla_dbg.h +++ b/drivers/scsi/qla2xxx/qla_dbg.h @@ -313,12 +313,18 @@ void __attribute__((format (printf, 4, 5))) ql_dbg(uint32_t, scsi_qla_host_t *vha, int32_t, const char *fmt, ...); void __attribute__((format (printf, 4, 5))) ql_dbg_pci(uint32_t, struct pci_dev *pdev, int32_t, const char *fmt, ...); +void __attribute__((format (printf, 4, 5))) +ql_dbg_qp(uint32_t, struct qla_qpair *, int32_t, const char *fmt, ...); + void __attribute__((format (printf, 4, 5))) ql_log(uint32_t, scsi_qla_host_t *vha, int32_t, const char *fmt, ...); void __attribute__((format (printf, 4, 5))) ql_log_pci(uint32_t, struct pci_dev *pdev, int32_t, const char *fmt, ...); +void __attribute__((format (printf, 4, 5))) +ql_log_qp(uint32_t, struct qla_qpair *, int32_t, const char *fmt, ...); + /* Debug Levels */ /* The 0x40000000 is the max value any debug level can have * as ql2xextended_error_logging is of type signed int diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index db5a812..0e8cdaa 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -2263,7 +2263,7 @@ static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) return 0; out_err: - ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d, + ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, "qla_target(%d): PCI mapping failed: sg_cnt=%d", 0, prm->cmd->sg_cnt); return -1; @@ -2379,7 +2379,6 @@ static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, struct ctio7_to_24xx *pkt; struct atio_from_isp *atio = &prm->cmd->atio; uint16_t temp; - struct scsi_qla_host *vha = prm->cmd->vha; pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; prm->pkt = pkt; @@ -2387,7 +2386,7 @@ static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, pkt->entry_type = CTIO_TYPE7; pkt->entry_count = (uint8_t)prm->req_cnt; - pkt->vp_index = vha->vp_idx; + pkt->vp_index = prm->cmd->vp_idx; h = qlt_make_handle(qpair); if (unlikely(h == QLA_TGT_NULL_HANDLE)) { @@ -2583,6 +2582,7 @@ static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, uint32_t *full_req_cnt) { struct se_cmd *se_cmd = &cmd->se_cmd; + struct qla_qpair *qpair = cmd->qpair; prm->cmd = cmd; prm->tgt = cmd->tgt; @@ -2608,7 +2608,7 @@ static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { prm->residual = se_cmd->residual_count; - ql_dbg(ql_dbg_io + ql_dbg_verbose, cmd->vha, 0x305c, + ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, @@ -2616,7 +2616,7 @@ static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, prm->rq_result |= SS_RESIDUAL_UNDER; } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { prm->residual = se_cmd->residual_count; - ql_dbg(ql_dbg_io, cmd->vha, 0x305d, + ql_dbg_qp(ql_dbg_io, qpair, 0x305d, "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); @@ -2672,7 +2672,7 @@ static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, if (qlt_need_explicit_conf(prm->cmd, 1)) { if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { - ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017, + ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, "Skipping EXPLICIT_CONFORM and " "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " "non GOOD status\n"); @@ -2867,9 +2867,9 @@ qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) prm->pkt = pkt; memset(pkt, 0, sizeof(*pkt)); - ql_dbg(ql_dbg_tgt, vha, 0xe071, + ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", - vha->vp_idx, __func__, se_cmd, se_cmd->prot_op, + cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || @@ -2932,7 +2932,7 @@ qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) /* Update entry type to indicate Command Type CRC_2 IOCB */ pkt->entry_type = CTIO_CRC2; pkt->entry_count = 1; - pkt->vp_index = vha->vp_idx; + pkt->vp_index = cmd->vp_idx; h = qlt_make_handle(qpair); if (unlikely(h == QLA_TGT_NULL_HANDLE)) { @@ -3080,7 +3080,7 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, return 0; } - ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018, + ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", (xmit_type & QLA_TGT_XMIT_STATUS) ? 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, @@ -3106,7 +3106,7 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, */ cmd->state = QLA_TGT_STATE_PROCESSED; qlt_abort_cmd_on_host_reset(cmd->vha, cmd); - ql_dbg(ql_dbg_async, vha, 0xe101, + ql_dbg_qp(ql_dbg_async, qpair, 0xe101, "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", vha->flags.online, qla2x00_reset_active(vha), cmd->reset_count, qpair->chip_reset); @@ -3164,7 +3164,7 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, (struct ctio7_to_24xx *)qlt_get_req_pkt( qpair->req); - ql_dbg(ql_dbg_tgt, vha, 0x305e, + ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, "Building additional status packet 0x%p.\n", ctio); @@ -3191,7 +3191,6 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, */ qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, &prm); - pr_debug("Status CTIO7: %p\n", ctio); } } else qlt_24xx_init_ctio_to_isp(pkt, &prm); @@ -3246,7 +3245,7 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) */ cmd->state = QLA_TGT_STATE_NEED_DATA; qlt_abort_cmd_on_host_reset(cmd->vha, cmd); - ql_dbg(ql_dbg_async, vha, 0xe102, + ql_dbg_qp(ql_dbg_async, qpair, 0xe102, "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", vha->flags.online, qla2x00_reset_active(vha), cmd->reset_count, qpair->chip_reset); @@ -4222,6 +4221,7 @@ static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); qlt_assign_qpair(vha, cmd); cmd->reset_count = vha->hw->base_qpair->chip_reset; + cmd->vp_idx = vha->vp_idx; return cmd; } diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h index 30a3894..bb8f73a 100644 --- a/drivers/scsi/qla2xxx/qla_target.h +++ b/drivers/scsi/qla2xxx/qla_target.h @@ -908,6 +908,7 @@ struct qla_tgt_cmd { u64 unpacked_lun; enum dma_data_direction dma_data_direction; + uint16_t vp_idx; uint16_t loop_id; /* to save extra sess dereferences */ struct qla_tgt *tgt; /* to save extra sess dereferences */ struct scsi_qla_host *vha; -- 2.7.4