diff options
| author | Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> | 2017-01-11 02:20:50 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-01-11 07:15:46 +0300 |
| commit | 3e5eadb1a881bea2e3fa41f5ae7cdbfa36222d37 (patch) | |
| tree | bf5737d62c16736446e2a3df31d19e132f2f265f /drivers/scsi/megaraid/megaraid_sas_fusion.c | |
| parent | 9581ebebbe351d99579e8701e238c2771ccdae93 (diff) | |
| download | linux-3e5eadb1a881bea2e3fa41f5ae7cdbfa36222d37.tar.xz | |
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_fusion.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index ac424ba59ceb..4d655e456709 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -95,6 +95,7 @@ extern unsigned int resetwaittime; extern unsigned int dual_qdepth_disable; static void megasas_free_rdpq_fusion(struct megasas_instance *instance); static void megasas_free_reply_fusion(struct megasas_instance *instance); +void megasas_change_r1_fp_status(unsigned long instance_addr); @@ -2628,8 +2629,9 @@ megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, * to get new command */ if (cmd->is_raid_1_fp_write && - atomic_inc_return(&instance->fw_outstanding) > - (instance->host->can_queue)) { + (atomic_inc_return(&instance->fw_outstanding) > + (instance->host->can_queue) || + (!atomic_read(&instance->r1_write_fp_capable)))) { megasas_fpio_to_ldio(instance, cmd, cmd->scmd); atomic_dec(&instance->fw_outstanding); } else if (cmd->is_raid_1_fp_write) { @@ -2638,17 +2640,19 @@ megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd); } - /* * Issue the command to the FW */ + if (scmd->sc_data_direction == PCI_DMA_TODEVICE && instance->is_ventura) + atomic64_add(scsi_bufflen(scmd), &instance->bytes_wrote); megasas_fire_cmd_fusion(instance, req_desc, instance->is_ventura); - if (r1_cmd) + if (r1_cmd) { + atomic64_add(scsi_bufflen(scmd), &instance->bytes_wrote); megasas_fire_cmd_fusion(instance, r1_cmd->request_desc, - instance->is_ventura); - + instance->is_ventura); + } return 0; } |