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| author | Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> | 2017-01-10 18:20:50 -0500 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-01-10 23:15:46 -0500 |
| commit | 3e5eadb1a881bea2e3fa41f5ae7cdbfa36222d37 (patch) | |
| tree | bf5737d62c16736446e2a3df31d19e132f2f265f /drivers/scsi/megaraid/megaraid_sas_fp.c | |
| parent | 9581ebebbe351d99579e8701e238c2771ccdae93 (diff) | |
| download | linux-stable-3e5eadb1a881bea2e3fa41f5ae7cdbfa36222d37.tar.gz linux-stable-3e5eadb1a881bea2e3fa41f5ae7cdbfa36222d37.tar.bz2 linux-stable-3e5eadb1a881bea2e3fa41f5ae7cdbfa36222d37.zip | |
scsi: megaraid_sas: Enable or Disable Fast path based on the PCI Threshold Bandwidth
Large SEQ IO workload should sent as non fast path commands
Signed-off-by: Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_fp.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fp.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c index f1384b01b3d3..322a72b593e3 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fp.c +++ b/drivers/scsi/megaraid/megaraid_sas_fp.c @@ -197,6 +197,9 @@ void MR_PopulateDrvRaidMap(struct megasas_instance *instance) if (instance->max_raid_mapsize) { fw_map_dyn = fusion->ld_map[(instance->map_id & 1)]; + if (fw_map_dyn->pci_threshold_bandwidth) + instance->pci_threshold_bandwidth = + le64_to_cpu(fw_map_dyn->pci_threshold_bandwidth); #if VD_EXT_DEBUG dev_dbg(&instance->pdev->dev, "raidMapSize 0x%x fw_map_dyn->descTableOffset 0x%x\n", le32_to_cpu(fw_map_dyn->raid_map_size), @@ -204,6 +207,8 @@ void MR_PopulateDrvRaidMap(struct megasas_instance *instance) dev_dbg(&instance->pdev->dev, "descTableSize 0x%x descTableNumElements 0x%x\n", le32_to_cpu(fw_map_dyn->desc_table_size), le32_to_cpu(fw_map_dyn->desc_table_num_elements)); + dev_dbg(&instance->pdev->dev, "PCIThreasholdBandwidth %llu\n", + instance->pci_threshold_bandwidth); dev_dbg(&instance->pdev->dev, "drv map %p ldCount %d\n", drv_map, fw_map_dyn->ld_count); #endif @@ -434,6 +439,8 @@ void MR_PopulateDrvRaidMap(struct megasas_instance *instance) sizeof(struct MR_DEV_HANDLE_INFO) * MAX_RAIDMAP_PHYSICAL_DEVICES); } + if (instance->is_ventura && !instance->pci_threshold_bandwidth) + instance->pci_threshold_bandwidth = ULLONG_MAX; } /* |