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| author | Dick Kennedy <dick.kennedy@broadcom.com> | 2017-09-29 17:34:34 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-10-02 22:46:36 -0400 |
| commit | f485c18db27734b37003bf2fafd364234e763633 (patch) | |
| tree | 35fb4cd9c0f5a7049c2892dc80aeae5cc555ef4a /drivers/scsi/lpfc/lpfc_nvmet.c | |
| parent | c8a4ce0bf3aad1a73d5122a3781a0be83bc0d0a4 (diff) | |
| download | lwn-f485c18db27734b37003bf2fafd364234e763633.tar.gz lwn-f485c18db27734b37003bf2fafd364234e763633.zip | |
scsi: lpfc: Move CQ processing to a soft IRQ
Under heavy target nvme load duration, the lpfc irq handler is
encountering cpu lockup warnings.
Convert the driver to a shortened ISR handler which identifies the
interrupting condition then schedules a workq thread to process the
completion queue the interrupt was for. This moves all the real work
into the workq element.
As nvmet_fc upcalls are no longer in ISR context, don't set the feature
flags
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_nvmet.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_nvmet.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/scsi/lpfc/lpfc_nvmet.c b/drivers/scsi/lpfc/lpfc_nvmet.c index 46b411894964..d065f5e4fa1a 100644 --- a/drivers/scsi/lpfc/lpfc_nvmet.c +++ b/drivers/scsi/lpfc/lpfc_nvmet.c @@ -1156,9 +1156,7 @@ lpfc_nvmet_create_targetport(struct lpfc_hba *phba) } lpfc_tgttemplate.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; lpfc_tgttemplate.max_hw_queues = phba->cfg_nvme_io_channel; - lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP | - NVMET_FCTGTFEAT_CMD_IN_ISR | - NVMET_FCTGTFEAT_OPDONE_IN_ISR; + lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP; #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) error = nvmet_fc_register_targetport(&pinfo, &lpfc_tgttemplate, |