diff options
| 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_sli4.h | |
| parent | c8a4ce0bf3aad1a73d5122a3781a0be83bc0d0a4 (diff) | |
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_sli4.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli4.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h index 60200385fe00..13b8f4d4da34 100644 --- a/drivers/scsi/lpfc/lpfc_sli4.h +++ b/drivers/scsi/lpfc/lpfc_sli4.h @@ -158,7 +158,6 @@ struct lpfc_queue { #define LPFC_MQ_REPOST 8 #define LPFC_CQ_REPOST 64 #define LPFC_RQ_REPOST 64 -#define LPFC_MAX_ISR_CQE 64 #define LPFC_RELEASE_NOTIFICATION_INTERVAL 32 /* For WQs */ uint32_t queue_id; /* Queue ID assigned by the hardware */ uint32_t assoc_qid; /* Queue ID associated with, for CQ/WQ/MQ */ @@ -202,6 +201,9 @@ struct lpfc_queue { #define RQ_buf_posted q_cnt_3 #define RQ_rcv_buf q_cnt_4 + struct work_struct irqwork; + struct work_struct spwork; + uint64_t isr_timestamp; struct lpfc_queue *assoc_qp; union sli4_qe qe[1]; /* array to index entries (must be last) */ |