snic: Added additional stats
Adding additional stats, and fixed logging messages. - Added qdepth change stats - Added separate isr stats for each type of interrupt - Fixed race in updating active IOs - Suppressed Link event message for DAS backend. Signed-off-by: Narsimhulu Musini <nmusini@cisco.com> Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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45cc807291
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3f5c11a463
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@ -39,17 +39,15 @@ snic_handle_link(struct work_struct *work)
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{
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struct snic *snic = container_of(work, struct snic, link_work);
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if (snic->config.xpt_type != SNIC_DAS) {
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SNIC_HOST_INFO(snic->shost, "Link Event Received.\n");
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SNIC_ASSERT_NOT_IMPL(1);
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if (snic->config.xpt_type == SNIC_DAS)
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return;
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}
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snic->link_status = svnic_dev_link_status(snic->vdev);
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snic->link_down_cnt = svnic_dev_link_down_cnt(snic->vdev);
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SNIC_HOST_INFO(snic->shost, "Link Event: Link %s.\n",
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((snic->link_status) ? "Up" : "Down"));
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SNIC_ASSERT_NOT_IMPL(1);
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}
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@ -264,12 +264,14 @@ snic_stats_show(struct seq_file *sfp, void *data)
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"Aborts Fail : %lld\n"
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"Aborts Driver Timeout : %lld\n"
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"Abort FW Timeout : %lld\n"
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"Abort IO NOT Found : %lld\n",
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"Abort IO NOT Found : %lld\n"
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"Abort Queuing Failed : %lld\n",
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(u64) atomic64_read(&stats->abts.num),
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(u64) atomic64_read(&stats->abts.fail),
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(u64) atomic64_read(&stats->abts.drv_tmo),
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(u64) atomic64_read(&stats->abts.fw_tmo),
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(u64) atomic64_read(&stats->abts.io_not_found));
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(u64) atomic64_read(&stats->abts.io_not_found),
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(u64) atomic64_read(&stats->abts.q_fail));
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/* Dump Reset Stats */
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seq_printf(sfp,
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@ -316,7 +318,9 @@ snic_stats_show(struct seq_file *sfp, void *data)
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seq_printf(sfp,
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"Last ISR Time : %llu (%8lu.%8lu)\n"
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"Last Ack Time : %llu (%8lu.%8lu)\n"
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"ISRs : %llu\n"
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"Ack ISRs : %llu\n"
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"IO Cmpl ISRs : %llu\n"
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"Err Notify ISRs : %llu\n"
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"Max CQ Entries : %lld\n"
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"Data Count Mismatch : %lld\n"
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"IOs w/ Timeout Status : %lld\n"
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@ -324,12 +328,17 @@ snic_stats_show(struct seq_file *sfp, void *data)
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"IOs w/ SGL Invalid Stat : %lld\n"
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"WQ Desc Alloc Fail : %lld\n"
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"Queue Full : %lld\n"
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"Queue Ramp Up : %lld\n"
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"Queue Ramp Down : %lld\n"
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"Queue Last Queue Depth : %lld\n"
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"Target Not Ready : %lld\n",
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(u64) stats->misc.last_isr_time,
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last_isr_tms.tv_sec, last_isr_tms.tv_nsec,
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(u64)stats->misc.last_ack_time,
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last_ack_tms.tv_sec, last_ack_tms.tv_nsec,
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(u64) atomic64_read(&stats->misc.isr_cnt),
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(u64) atomic64_read(&stats->misc.ack_isr_cnt),
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(u64) atomic64_read(&stats->misc.cmpl_isr_cnt),
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(u64) atomic64_read(&stats->misc.errnotify_isr_cnt),
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(u64) atomic64_read(&stats->misc.max_cq_ents),
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(u64) atomic64_read(&stats->misc.data_cnt_mismat),
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(u64) atomic64_read(&stats->misc.io_tmo),
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@ -337,6 +346,9 @@ snic_stats_show(struct seq_file *sfp, void *data)
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(u64) atomic64_read(&stats->misc.sgl_inval),
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(u64) atomic64_read(&stats->misc.wq_alloc_fail),
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(u64) atomic64_read(&stats->misc.qfull),
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(u64) atomic64_read(&stats->misc.qsz_rampup),
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(u64) atomic64_read(&stats->misc.qsz_rampdown),
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(u64) atomic64_read(&stats->misc.last_qsz),
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(u64) atomic64_read(&stats->misc.tgt_not_rdy));
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return 0;
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@ -38,7 +38,7 @@ snic_isr_msix_wq(int irq, void *data)
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unsigned long wq_work_done = 0;
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snic->s_stats.misc.last_isr_time = jiffies;
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atomic64_inc(&snic->s_stats.misc.isr_cnt);
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atomic64_inc(&snic->s_stats.misc.ack_isr_cnt);
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wq_work_done = snic_wq_cmpl_handler(snic, -1);
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svnic_intr_return_credits(&snic->intr[SNIC_MSIX_WQ],
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@ -56,7 +56,7 @@ snic_isr_msix_io_cmpl(int irq, void *data)
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unsigned long iocmpl_work_done = 0;
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snic->s_stats.misc.last_isr_time = jiffies;
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atomic64_inc(&snic->s_stats.misc.isr_cnt);
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atomic64_inc(&snic->s_stats.misc.cmpl_isr_cnt);
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iocmpl_work_done = snic_fwcq_cmpl_handler(snic, -1);
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svnic_intr_return_credits(&snic->intr[SNIC_MSIX_IO_CMPL],
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@ -73,7 +73,7 @@ snic_isr_msix_err_notify(int irq, void *data)
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struct snic *snic = data;
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snic->s_stats.misc.last_isr_time = jiffies;
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atomic64_inc(&snic->s_stats.misc.isr_cnt);
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atomic64_inc(&snic->s_stats.misc.errnotify_isr_cnt);
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svnic_intr_return_all_credits(&snic->intr[SNIC_MSIX_ERR_NOTIFY]);
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snic_log_q_error(snic);
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@ -98,11 +98,18 @@ snic_slave_configure(struct scsi_device *sdev)
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static int
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snic_change_queue_depth(struct scsi_device *sdev, int qdepth)
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{
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struct snic *snic = shost_priv(sdev->host);
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int qsz = 0;
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qsz = min_t(u32, qdepth, SNIC_MAX_QUEUE_DEPTH);
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if (qsz < sdev->queue_depth)
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atomic64_inc(&snic->s_stats.misc.qsz_rampdown);
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else if (qsz > sdev->queue_depth)
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atomic64_inc(&snic->s_stats.misc.qsz_rampup);
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atomic64_set(&snic->s_stats.misc.last_qsz, sdev->queue_depth);
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scsi_change_queue_depth(sdev, qsz);
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SNIC_INFO("QDepth Changed to %d\n", sdev->queue_depth);
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return sdev->queue_depth;
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}
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@ -221,11 +221,15 @@ snic_queue_icmnd_req(struct snic *snic,
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pa, /* sense buffer pa */
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SCSI_SENSE_BUFFERSIZE);
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atomic64_inc(&snic->s_stats.io.active);
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ret = snic_queue_wq_desc(snic, rqi->req, rqi->req_len);
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if (ret)
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if (ret) {
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atomic64_dec(&snic->s_stats.io.active);
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SNIC_HOST_ERR(snic->shost,
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"QIcmnd: Queuing Icmnd Failed. ret = %d\n",
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ret);
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} else
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snic_stats_update_active_ios(&snic->s_stats);
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return ret;
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} /* end of snic_queue_icmnd_req */
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@ -361,8 +365,7 @@ snic_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *sc)
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if (ret) {
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SNIC_HOST_ERR(shost, "Failed to Q, Scsi Req w/ err %d.\n", ret);
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ret = SCSI_MLQUEUE_HOST_BUSY;
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} else
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snic_stats_update_active_ios(&snic->s_stats);
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}
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atomic_dec(&snic->ios_inflight);
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@ -1001,10 +1004,11 @@ snic_hba_reset_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq)
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unsigned long flags, gflags;
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int ret = 0;
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SNIC_HOST_INFO(snic->shost,
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"reset_cmpl:HBA Reset Completion received.\n");
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snic_io_hdr_dec(&fwreq->hdr, &typ, &hdr_stat, &cmnd_id, &hid, &ctx);
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SNIC_HOST_INFO(snic->shost,
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"reset_cmpl:Tag %d ctx %lx cmpl status %s HBA Reset Completion received.\n",
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cmnd_id, ctx, snic_io_status_to_str(hdr_stat));
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SNIC_SCSI_DBG(snic->shost,
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"reset_cmpl: type = %x, hdr_stat = %x, cmnd_id = %x, hid = %x, ctx = %lx\n",
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typ, hdr_stat, cmnd_id, hid, ctx);
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@ -1012,6 +1016,9 @@ snic_hba_reset_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq)
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/* spl case, host reset issued through ioctl */
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if (cmnd_id == SCSI_NO_TAG) {
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rqi = (struct snic_req_info *) ctx;
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SNIC_HOST_INFO(snic->shost,
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"reset_cmpl:Tag %d ctx %lx cmpl stat %s\n",
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cmnd_id, ctx, snic_io_status_to_str(hdr_stat));
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sc = rqi->sc;
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goto ioctl_hba_rst;
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@ -1038,6 +1045,10 @@ ioctl_hba_rst:
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return ret;
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}
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SNIC_HOST_INFO(snic->shost,
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"reset_cmpl: sc %p rqi %p Tag %d flags 0x%llx\n",
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sc, rqi, cmnd_id, CMD_FLAGS(sc));
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io_lock = snic_io_lock_hash(snic, sc);
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spin_lock_irqsave(io_lock, flags);
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@ -1554,6 +1565,7 @@ snic_send_abort_and_wait(struct snic *snic, struct scsi_cmnd *sc)
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/* Now Queue the abort command to firmware */
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ret = snic_queue_abort_req(snic, rqi, sc, tmf);
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if (ret) {
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atomic64_inc(&snic->s_stats.abts.q_fail);
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SNIC_HOST_ERR(snic->shost,
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"send_abt_cmd: IO w/ Tag 0x%x fail w/ err %d flags 0x%llx\n",
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tag, ret, CMD_FLAGS(sc));
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@ -2459,8 +2471,9 @@ snic_scsi_cleanup(struct snic *snic, int ex_tag)
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cleanup:
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sc->result = DID_TRANSPORT_DISRUPTED << 16;
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SNIC_HOST_INFO(snic->shost,
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"sc_clean: DID_TRANSPORT_DISRUPTED for sc %p. rqi %p duration %llu msecs\n",
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sc, rqi, (jiffies - st_time));
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"sc_clean: DID_TRANSPORT_DISRUPTED for sc %p, Tag %d flags 0x%llx rqi %p duration %u msecs\n",
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sc, sc->request->tag, CMD_FLAGS(sc), rqi,
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jiffies_to_msecs(jiffies - st_time));
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/* Update IO stats */
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snic_stats_update_io_cmpl(&snic->s_stats);
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@ -42,6 +42,7 @@ struct snic_abort_stats {
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atomic64_t drv_tmo; /* Abort Driver Timeouts */
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atomic64_t fw_tmo; /* Abort Firmware Timeouts */
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atomic64_t io_not_found;/* Abort IO Not Found */
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atomic64_t q_fail; /* Abort Queuing Failed */
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};
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struct snic_reset_stats {
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@ -69,7 +70,9 @@ struct snic_fw_stats {
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struct snic_misc_stats {
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u64 last_isr_time;
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u64 last_ack_time;
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atomic64_t isr_cnt;
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atomic64_t ack_isr_cnt;
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atomic64_t cmpl_isr_cnt;
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atomic64_t errnotify_isr_cnt;
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atomic64_t max_cq_ents; /* Max CQ Entries */
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atomic64_t data_cnt_mismat; /* Data Count Mismatch */
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atomic64_t io_tmo;
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@ -81,6 +84,9 @@ struct snic_misc_stats {
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atomic64_t no_icmnd_itmf_cmpls;
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atomic64_t io_under_run;
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atomic64_t qfull;
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atomic64_t qsz_rampup;
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atomic64_t qsz_rampdown;
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atomic64_t last_qsz;
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atomic64_t tgt_not_rdy;
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};
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@ -101,9 +107,9 @@ static inline void
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snic_stats_update_active_ios(struct snic_stats *s_stats)
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{
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struct snic_io_stats *io = &s_stats->io;
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u32 nr_active_ios;
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int nr_active_ios;
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nr_active_ios = atomic64_inc_return(&io->active);
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nr_active_ios = atomic64_read(&io->active);
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if (atomic64_read(&io->max_active) < nr_active_ios)
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atomic64_set(&io->max_active, nr_active_ios);
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