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authorDon Brace <don.brace@microsemi.com>2017-01-30 16:05:17 -0600
committerMartin K. Petersen <martin.petersen@oracle.com>2017-01-31 21:51:16 -0500
commit96b6ce4e8b66b009396799843d6191fefcc36c33 (patch)
treeb82ac0a59d5f93089ca5cf4848d59994b29d57b2 /drivers/scsi/hpsa.c
parent526db94e5de8923eb293ae5e2dd6b19d75e26e4c (diff)
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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.c8
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,