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| author | Chandrakanth Patil <chandrakanth.patil@broadcom.com> | 2019-06-25 14:04:31 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-06-27 07:07:35 +0300 |
| commit | 132147d7f620eed4a7bee815eba03561258fc21e (patch) | |
| tree | 98a5c222f35079fbce83e7518fc4a6c1ec36da4b /drivers/scsi/megaraid/megaraid_sas_fusion.c | |
| parent | 58136856167d10adc2a190aff88d13b33eafb9e2 (diff) | |
| download | linux-132147d7f620eed4a7bee815eba03561258fc21e.tar.xz | |
scsi: megaraid_sas: Add support for High IOPS queues
Aero controllers support balanced performance mode through the ability to
configure queues with different properties.
Reply queues with interrupt coalescing enabled are called "high iops reply
queues" and reply queues with interrupt coalescing disabled are called "low
latency reply queues".
The driver configures a combination of high iops and low latency reply
queues if:
- HBA is an AERO controller;
- MSI-X vectors supported by the HBA is 128;
- Total CPU count in the system more than high iops queue count;
- Driver is loaded with default max_msix_vectors module parameter; and
- System booted in non-kdump mode.
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.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 | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index e12434130231..44bfbe8d2ce5 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -1058,6 +1058,7 @@ megasas_ioc_init_fusion(struct megasas_instance *instance) u32 scratch_pad_1; ktime_t time; bool cur_fw_64bit_dma_capable; + bool cur_intr_coalescing; fusion = instance->ctrl_context; @@ -1091,6 +1092,16 @@ megasas_ioc_init_fusion(struct megasas_instance *instance) goto fail_fw_init; } + cur_intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ? + true : false; + + if ((instance->low_latency_index_start == + MR_HIGH_IOPS_QUEUE_COUNT) && cur_intr_coalescing) + instance->balanced_mode = true; + + dev_info(&instance->pdev->dev, "Balanced mode :%s\n", + instance->balanced_mode ? "Yes" : "No"); + instance->fw_sync_cache_support = (scratch_pad_1 & MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0; dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n", |