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| author | James Smart <jsmart2021@gmail.com> | 2019-01-28 11:14:22 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-02-05 22:24:22 -0500 |
| commit | 5e5b511d8bfaf765cb92a695cda336c936cb86dc (patch) | |
| tree | 317cb0e4afa34afee89e181a90e7066da05c069e /drivers/scsi/lpfc/lpfc_scsi.h | |
| parent | cdb42becdd40eeb320af3f21ac9a34e9d7517516 (diff) | |
| download | linux-5e5b511d8bfaf765cb92a695cda336c936cb86dc.tar.gz linux-5e5b511d8bfaf765cb92a695cda336c936cb86dc.tar.bz2 linux-5e5b511d8bfaf765cb92a695cda336c936cb86dc.zip | |
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_scsi.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_scsi.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/scsi/lpfc/lpfc_scsi.h b/drivers/scsi/lpfc/lpfc_scsi.h index d784de3da0c0..ebb5d5860cdb 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.h +++ b/drivers/scsi/lpfc/lpfc_scsi.h @@ -138,6 +138,8 @@ struct lpfc_scsi_buf { dma_addr_t dma_phys_sgl; struct ulp_bde64 *dma_sgl; struct lpfc_iocbq cur_iocbq; + uint16_t hdwq; + uint16_t cpu; /* SCSI specific fields */ struct scsi_cmnd *pCmd; @@ -150,7 +152,6 @@ struct lpfc_scsi_buf { #define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */ #define LPFC_SBUF_BUMP_QDEPTH 0x2 /* bumped queue depth counter */ uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */ - uint16_t cpu; uint16_t status; /* From IOCB Word 7- ulpStatus */ uint32_t result; /* From IOCB Word 4. */ |