diff options
| author | Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> | 2017-05-10 18:39:37 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-06-13 02:47:59 +0200 |
| commit | d58129c96b3cde4821763b08b5f1bba17f031138 (patch) | |
| tree | a834256035fb0b311288d0032d63ba24bd28b4d9 /drivers/scsi/aacraid/linit.c | |
| parent | scsi: aacraid: Fix DMAR issues with iommu=pt (diff) | |
| download | linux-d58129c96b3cde4821763b08b5f1bba17f031138.tar.xz linux-d58129c96b3cde4821763b08b5f1bba17f031138.zip | |
scsi: aacraid: Added 32 and 64 queue depth for arc natives
The qd for ARC Native disks is calculated by dividing the max IO 1024
by the number of disks or 256 which ever is lower. This causes poor
disk IO performance.
The fix is set the qd based on the type of disk (SAS - 64 and SATA -
32).
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/aacraid/linit.c')
| -rw-r--r-- | drivers/scsi/aacraid/linit.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index 5a201da93250..5e1a2d67d90c 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -466,6 +466,17 @@ static int aac_slave_configure(struct scsi_device *sdev) ++num_lsu; depth = (host->can_queue - num_one) / num_lsu; + + if (sdev_channel(sdev) != NATIVE_CHANNEL) + goto common_config; + + /* + * Check if SATA drive + */ + if (strncmp(sdev->vendor, "ATA", 3) == 0) + depth = 32; + else + depth = 64; } common_config: |