diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_nvme.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_nvme.c | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c index 1942e61e1103..68074bf73b6c 100644 --- a/drivers/scsi/lpfc/lpfc_nvme.c +++ b/drivers/scsi/lpfc/lpfc_nvme.c @@ -667,15 +667,17 @@ lpfc_nvme_ktime(struct lpfc_hba *phba, struct lpfc_nvme_buf *lpfc_ncmd) { uint64_t seg1, seg2, seg3, seg4; + uint64_t segsum; - if (!phba->ktime_on) - return; if (!lpfc_ncmd->ts_last_cmd || !lpfc_ncmd->ts_cmd_start || !lpfc_ncmd->ts_cmd_wqput || !lpfc_ncmd->ts_isr_cmpl || !lpfc_ncmd->ts_data_nvme) return; + + if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_cmd_start) + return; if (lpfc_ncmd->ts_cmd_start < lpfc_ncmd->ts_last_cmd) return; if (lpfc_ncmd->ts_cmd_wqput < lpfc_ncmd->ts_cmd_start) @@ -695,15 +697,23 @@ lpfc_nvme_ktime(struct lpfc_hba *phba, * cmpl is handled off to the NVME Layer. */ seg1 = lpfc_ncmd->ts_cmd_start - lpfc_ncmd->ts_last_cmd; - if (seg1 > 5000000) /* 5 ms - for sequential IOs */ - return; + if (seg1 > 5000000) /* 5 ms - for sequential IOs only */ + seg1 = 0; /* Calculate times relative to start of IO */ seg2 = (lpfc_ncmd->ts_cmd_wqput - lpfc_ncmd->ts_cmd_start); - seg3 = (lpfc_ncmd->ts_isr_cmpl - - lpfc_ncmd->ts_cmd_start) - seg2; - seg4 = (lpfc_ncmd->ts_data_nvme - - lpfc_ncmd->ts_cmd_start) - seg2 - seg3; + segsum = seg2; + seg3 = lpfc_ncmd->ts_isr_cmpl - lpfc_ncmd->ts_cmd_start; + if (segsum > seg3) + return; + seg3 -= segsum; + segsum += seg3; + + seg4 = lpfc_ncmd->ts_data_nvme - lpfc_ncmd->ts_cmd_start; + if (segsum > seg4) + return; + seg4 -= segsum; + phba->ktime_data_samples++; phba->ktime_seg1_total += seg1; if (seg1 < phba->ktime_seg1_min) @@ -902,7 +912,7 @@ out_err: * owns the dma address. */ #ifdef CONFIG_SCSI_LPFC_DEBUG_FS - if (phba->ktime_on) { + if (lpfc_ncmd->ts_cmd_start) { lpfc_ncmd->ts_isr_cmpl = pwqeIn->isr_timestamp; lpfc_ncmd->ts_data_nvme = ktime_get_ns(); phba->ktime_last_cmd = lpfc_ncmd->ts_data_nvme; @@ -1283,9 +1293,11 @@ lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, goto out_fail; } #ifdef CONFIG_SCSI_LPFC_DEBUG_FS - if (phba->ktime_on) { + if (start) { lpfc_ncmd->ts_cmd_start = start; lpfc_ncmd->ts_last_cmd = phba->ktime_last_cmd; + } else { + lpfc_ncmd->ts_cmd_start = 0; } #endif @@ -1336,7 +1348,7 @@ lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, } #ifdef CONFIG_SCSI_LPFC_DEBUG_FS - if (phba->ktime_on) + if (lpfc_ncmd->ts_cmd_start) lpfc_ncmd->ts_cmd_wqput = ktime_get_ns(); if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) { |