diff options
| author | Don Brace <don.brace@microsemi.com> | 2017-01-30 16:05:17 -0600 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-01-31 21:51:16 -0500 |
| commit | 96b6ce4e8b66b009396799843d6191fefcc36c33 (patch) | |
| tree | b82ac0a59d5f93089ca5cf4848d59994b29d57b2 /drivers/scsi/hpsa.c | |
| parent | 526db94e5de8923eb293ae5e2dd6b19d75e26e4c (diff) | |
| download | linux-96b6ce4e8b66b009396799843d6191fefcc36c33.tar.bz2 | |
scsi: hpsa: remove coalescing settings for ioaccel2
- Setting coalescing has a significant negative impact on low
queue-depth performance.
- Does not help high queue-depth performance.
Signed-off-by: Don Brace <don.brace@microsemi.com>
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/hpsa.c')
| -rw-r--r-- | drivers/scsi/hpsa.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index cbc0c5fe5a60..4323ddcf9718 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -9263,13 +9263,9 @@ static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support) access = SA5_ioaccel_mode1_access; writel(10, &h->cfgtable->HostWrite.CoalIntDelay); writel(4, &h->cfgtable->HostWrite.CoalIntCount); - } else { - if (trans_support & CFGTBL_Trans_io_accel2) { + } else + if (trans_support & CFGTBL_Trans_io_accel2) access = SA5_ioaccel_mode2_access; - writel(10, &h->cfgtable->HostWrite.CoalIntDelay); - writel(4, &h->cfgtable->HostWrite.CoalIntCount); - } - } writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); if (hpsa_wait_for_mode_change_ack(h)) { dev_err(&h->pdev->dev, |