diff options
| author | James Smart <jsmart2021@gmail.com> | 2019-01-28 11:14:31 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-02-05 22:29:49 -0500 |
| commit | 6a828b0f6192b4930894925d1c1d0dc1f1d99e6e (patch) | |
| tree | 30837f3b1f484f4b6357b173b173e3e3b8672464 /drivers/scsi/lpfc/lpfc_scsi.c | |
| parent | b3295c2a75333a4d6f0f945c7c148b1c0a453a8f (diff) | |
scsi: lpfc: Support non-uniform allocation of MSIX vectors to hardware queues
So far MSIX vector allocation assumed it would be 1:1 with hardware
queues. However, there are several reasons why fewer MSIX vectors may be
allocated than hardware queues such as the platform being out of vectors or
adapter limits being less than cpu count.
This patch reworks the MSIX/EQ relationships with the per-cpu hardware
queues so they can function independently. MSIX vectors will be equitably
split been cpu sockets/cores and then the per-cpu hardware queues will be
mapped to the vectors most efficient for them.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_scsi.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_scsi.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index 7b22cc995d7f..a827520789f1 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -692,10 +692,7 @@ lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, tag = blk_mq_unique_tag(cmnd->request); idx = blk_mq_unique_tag_to_hwq(tag); } else { - if (cpu < phba->cfg_hdw_queue) - idx = cpu; - else - idx = cpu % phba->cfg_hdw_queue; + idx = phba->sli4_hba.cpu_map[cpu].hdwq; } lpfc_cmd = lpfc_get_io_buf(phba, ndlp, idx, @@ -3650,6 +3647,9 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, struct Scsi_Host *shost; int idx; uint32_t logit = LOG_FCP; +#ifdef CONFIG_SCSI_LPFC_DEBUG_FS + int cpu; +#endif /* Sanity check on return of outstanding command */ cmd = lpfc_cmd->pCmd; @@ -3660,6 +3660,13 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, if (phba->sli4_hba.hdwq) phba->sli4_hba.hdwq[idx].scsi_cstat.io_cmpls++; +#ifdef CONFIG_SCSI_LPFC_DEBUG_FS + if (phba->cpucheck_on & LPFC_CHECK_SCSI_IO) { + cpu = smp_processor_id(); + if (cpu < LPFC_CHECK_CPU_CNT) + phba->sli4_hba.hdwq[idx].cpucheck_cmpl_io[cpu]++; + } +#endif shost = cmd->device->host; lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK); @@ -4336,6 +4343,9 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd) struct lpfc_io_buf *lpfc_cmd; struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); int err, idx; +#ifdef CONFIG_SCSI_LPFC_DEBUG_FS + int cpu; +#endif rdata = lpfc_rport_data_from_scsi_device(cmnd->device); @@ -4450,6 +4460,16 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd) lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); +#ifdef CONFIG_SCSI_LPFC_DEBUG_FS + if (phba->cpucheck_on & LPFC_CHECK_SCSI_IO) { + cpu = smp_processor_id(); + if (cpu < LPFC_CHECK_CPU_CNT) { + struct lpfc_sli4_hdw_queue *hdwq = + &phba->sli4_hba.hdwq[lpfc_cmd->hdwq_no]; + hdwq->cpucheck_xmt_io[cpu]++; + } + } +#endif err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); if (err) { |