diff options
| author | James Smart <jsmart2021@gmail.com> | 2019-01-28 22:14:22 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-02-06 06:24:22 +0300 |
| commit | 5e5b511d8bfaf765cb92a695cda336c936cb86dc (patch) | |
| tree | 317cb0e4afa34afee89e181a90e7066da05c069e /drivers/scsi/lpfc/lpfc_crtn.h | |
| parent | cdb42becdd40eeb320af3f21ac9a34e9d7517516 (diff) | |
| download | linux-5e5b511d8bfaf765cb92a695cda336c936cb86dc.tar.xz | |
scsi: lpfc: Partition XRI buffer list across Hardware Queues
Once the IO buff allocations were made shared, there was a single XRI
buffer list shared by all hardware queues. A single list isn't great for
performance when shared across the per-cpu hardware queues.
Create a separate XRI IO buffer get/put list for each Hardware Queue. As
SGLs and associated IO buffers get allocated/posted to the firmware; round
robin their assignment across all available hardware Queues so that there
is an equitable assignment.
Modify SCSI and NVME IO submit code paths to use the Hardware Queue logic
for XRI allocation.
Add a debugfs interface to display hardware queue statistics
Added new empty_io_bufs counter to track if a cpu runs out of XRIs.
Replace common_ variables/names with io_ to make meanings clearer.
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_crtn.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_crtn.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h index 6dc427d4228c..a623f6f619cc 100644 --- a/drivers/scsi/lpfc/lpfc_crtn.h +++ b/drivers/scsi/lpfc/lpfc_crtn.h @@ -515,10 +515,12 @@ int lpfc_sli4_read_config(struct lpfc_hba *); void lpfc_sli4_node_prep(struct lpfc_hba *); int lpfc_sli4_els_sgl_update(struct lpfc_hba *phba); int lpfc_sli4_nvmet_sgl_update(struct lpfc_hba *phba); -int lpfc_sli4_common_sgl_update(struct lpfc_hba *phba); -int lpfc_sli4_post_common_sgl_list(struct lpfc_hba *phba, - struct list_head *blist, int xricnt); -int lpfc_new_common_buf(struct lpfc_hba *phba, int num_to_alloc); +int lpfc_io_buf_flush(struct lpfc_hba *phba, struct list_head *sglist); +int lpfc_io_buf_replenish(struct lpfc_hba *phba, struct list_head *cbuf); +int lpfc_sli4_io_sgl_update(struct lpfc_hba *phba); +int lpfc_sli4_post_io_sgl_list(struct lpfc_hba *phba, + struct list_head *blist, int xricnt); +int lpfc_new_io_buf(struct lpfc_hba *phba, int num_to_alloc); void lpfc_free_sgl_list(struct lpfc_hba *, struct list_head *); uint32_t lpfc_sli_port_speed_get(struct lpfc_hba *); int lpfc_sli4_request_firmware_update(struct lpfc_hba *, uint8_t); |