diff options
| author | James Smart <jsmart2021@gmail.com> | 2019-10-19 00:18:25 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-10-25 04:02:05 +0300 |
| commit | ea85a20cd54f3b09880f6c08994b059f0d114a11 (patch) | |
| tree | c75447d0f175caf35a50ae006cb11e607d5dee61 /drivers/scsi/lpfc/lpfc.h | |
| parent | 22770cbabf6bb77a397d9f11d41f97667dd0caa2 (diff) | |
| download | linux-ea85a20cd54f3b09880f6c08994b059f0d114a11.tar.xz | |
scsi: lpfc: Remove lock contention target write path
Lower IOps performance with write operations. Perf tool shows lock
contention in dma_pool_alloc and dma_pool_free related to the
txrdy_payload_pool.
The allocations are for dma buffers for XFER_RDY's, which actually are not
needed for the FCP_TRECEIVE command as the command contents are used by the
adapter to generate the IU.
Remove the allocations and the associated buffer pool. Rather than leaving
NULLs in buffer pointer locations, set command and sgl to indicate skipped
SGLE indexes.
Link: https://lore.kernel.org/r/20191018211832.7917-10-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index 291335e16806..dabb5eac5fed 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -989,7 +989,6 @@ struct lpfc_hba { struct dma_pool *lpfc_drb_pool; /* data receive buffer pool */ struct dma_pool *lpfc_nvmet_drb_pool; /* data receive buffer pool */ struct dma_pool *lpfc_hbq_pool; /* SLI3 hbq buffer pool */ - struct dma_pool *txrdy_payload_pool; struct dma_pool *lpfc_cmd_rsp_buf_pool; struct lpfc_dma_pool lpfc_mbuf_safety_pool; |