diff options
| author | Quinn Tran <qutran@marvell.com> | 2022-12-21 20:39:28 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-01-11 23:48:25 -0500 |
| commit | 82d8dfd2a238261e06759ee792417dc99b93d60d (patch) | |
| tree | 4e7f369fc8560152a3f4bee1368383a551b295f5 /drivers/scsi/qla2xxx/qla_gbl.h | |
| parent | 430eef03a763e5e76a371ba6d02779ae4a64b6ea (diff) | |
scsi: qla2xxx: edif: Fix performance dip due to lock contention
User experienced performance dip on measuring IOPS while EDIF
enabled. During I/O time, driver uses dma_pool_zalloc() call to allocate a
chunk of memory. This call contains a lock behind the scene which
contribute to lock contention. Save the allocated memory for reuse and
avoid the lock.
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_gbl.h')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_gbl.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index 958892766321..d802d37fe739 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -1015,5 +1015,8 @@ int qla2xxx_enable_port(struct Scsi_Host *shost); uint64_t qla2x00_get_num_tgts(scsi_qla_host_t *vha); uint64_t qla2x00_count_set_bits(u32 num); - +int qla_create_buf_pool(struct scsi_qla_host *, struct qla_qpair *); +void qla_free_buf_pool(struct qla_qpair *); +int qla_get_buf(struct scsi_qla_host *, struct qla_qpair *, struct qla_buf_dsc *); +void qla_put_buf(struct qla_qpair *, struct qla_buf_dsc *); #endif /* _QLA_GBL_H */ |