diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_sli4.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli4.h | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h index 986594ec40e2..9c3100246375 100644 --- a/drivers/scsi/lpfc/lpfc_sli4.h +++ b/drivers/scsi/lpfc/lpfc_sli4.h @@ -137,6 +137,23 @@ struct lpfc_rqb { struct lpfc_queue { struct list_head list; struct list_head wq_list; + + /* + * If interrupts are in effect on _all_ the eq's the footprint + * of polling code is zero (except mode). This memory is chec- + * ked for every io to see if the io needs to be polled and + * while completion to check if the eq's needs to be rearmed. + * Keep in same cacheline as the queue ptr to avoid cpu fetch + * stalls. Using 1B memory will leave us with 7B hole. Fill + * it with other frequently used members. + */ + uint16_t last_cpu; /* most recent cpu */ + uint16_t hdwq; + uint8_t qe_valid; + uint8_t mode; /* interrupt or polling */ +#define LPFC_EQ_INTERRUPT 0 +#define LPFC_EQ_POLL 1 + struct list_head wqfull_list; enum lpfc_sli4_queue_type type; enum lpfc_sli4_queue_subtype subtype; @@ -241,10 +258,8 @@ struct lpfc_queue { struct delayed_work sched_spwork; uint64_t isr_timestamp; - uint16_t hdwq; - uint16_t last_cpu; /* most recent cpu */ - uint8_t qe_valid; struct lpfc_queue *assoc_qp; + struct list_head _poll_list; void **q_pgs; /* array to index entries per page */ }; |