Enable all queues and implement correct I/O steering for scsi-mq.
Signed-off-by: Hannes Reinecke <h...@suse.com>
---
drivers/scsi/mpt3sas/mpt3sas_base.c | 8 ++++++--
drivers/scsi/mpt3sas/mpt3sas_scsih.c | 19 +++++++++++++++++++
2 files changed, 25 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c
b/drivers/scsi/mpt3sas/mpt3sas_base.c
index f6564a3..84f808d 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -3560,9 +3560,13 @@ void mpt3sas_base_clear_st(struct MPT3SAS_ADAPTER *ioc,
* with some internal commands that could be outstanding
*/
ioc->shost->can_queue = ioc->scsiio_depth - INTERNAL_SCSIIO_CMDS_COUNT;
+ if (ioc->shost->nr_hw_queues > 1) {
+ ioc->shost->nr_hw_queues = ioc->msix_vector_count;
+ ioc->shost->can_queue /= ioc->msix_vector_count;
+ }
dinitprintk(ioc, pr_info(MPT3SAS_FMT
- "scsi host: can_queue depth (%d)\n",
- ioc->name, ioc->shost->can_queue));
+ "scsi host: can_queue depth (%d), nr_hw_queues (%d)\n",
+ ioc->name, ioc->shost->can_queue, ioc->shost->nr_hw_queues));
/* contiguous pool for request and chains, 16 byte align, one extra "
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index 8c451aa..e43f928 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -54,6 +54,7 @@
#include <linux/interrupt.h>
#include <linux/aer.h>
#include <linux/raid_class.h>
+#include <linux/blk-mq-pci.h>
#include <asm/unaligned.h>
#include "mpt3sas_base.h"
@@ -4255,6 +4256,11 @@ void _flush_running(struct request *req, void *data,
bool reserved)
mpt3sas_setup_direct_io(ioc, scmd, raid_device, mpi_request,
smid);
+ if (shost_use_blk_mq(ioc->shost) && (ioc->shost->nr_hw_queues > 1)) {
+ u32 unique_tag = blk_mq_unique_tag(scmd->request);
+
+ msix_task = blk_mq_unique_tag_to_hwq(unique_tag);
+ }
if (likely(mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)) {
if (sas_target_priv_data->flags & MPT_TARGET_FASTPATH_IO) {
mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len |
@@ -8775,6 +8781,16 @@ static void sas_device_make_active(struct
MPT3SAS_ADAPTER *ioc,
return 1;
}
+static int scsih_map_queues(struct Scsi_Host *shost)
+{
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ if (shost->nr_hw_queues > 1)
+ return blk_mq_pci_map_queues(&shost->tag_set, ioc->pdev);
+
+ return -EINVAL;
+}
+
/* shost template for SAS 2.0 HBA devices */
static struct scsi_host_template mpt2sas_driver_template = {
.module = THIS_MODULE,
@@ -8788,6 +8804,7 @@ static void sas_device_make_active(struct MPT3SAS_ADAPTER
*ioc,
.slave_destroy = scsih_slave_destroy,
.scan_finished = scsih_scan_finished,
.scan_start = scsih_scan_start,
+ .map_queues = scsih_map_queues,
.change_queue_depth = scsih_change_queue_depth,
.eh_abort_handler = scsih_abort,
.eh_device_reset_handler = scsih_dev_reset,
@@ -9054,6 +9071,8 @@ static void sas_device_make_active(struct MPT3SAS_ADAPTER
*ioc,
shost->max_lun = max_lun;
shost->transportt = mpt3sas_transport_template;
shost->unique_id = ioc->id;
+ if (shost->use_blk_mq)
+ shost->nr_hw_queues = num_online_cpus();
if (max_sectors != 0xFFFF) {
if (max_sectors < 64) {
--
1.8.5.6
--
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