From: Chad Dupuis <chad.dupuis@xxxxxxxxxx>
Signed-off-by: Chad Dupuis <chad.dupuis@xxxxxxxxxx>
Signed-off-by: Saurav Kashyap <saurav.kashyap@xxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_dbg.c | 2 +-
drivers/scsi/qla2xxx/qla_def.h | 9 +++
drivers/scsi/qla2xxx/qla_gbl.h | 1 +
drivers/scsi/qla2xxx/qla_inline.h | 19 +++++++
drivers/scsi/qla2xxx/qla_isr.c | 4 ++
drivers/scsi/qla2xxx/qla_os.c | 107 ++++++++++++++++++++++++++++++++++--
6 files changed, 135 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c
index 2f3e765..f7cdd25 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.c
+++ b/drivers/scsi/qla2xxx/qla_dbg.c
@@ -17,7 +17,7 @@
* | | | 0x113a |
* | Device Discovery | 0x2087 | 0x2020-0x2022, |
* | | | 0x2016 |
- * | Queue Command and IO tracing | 0x3030 | 0x3006-0x300b |
+ * | Queue Command and IO tracing | 0x3031 | 0x3006-0x300b |
* | | | 0x3027-0x3028 |
* | | | 0x302d-0x302e |
* | DPC Thread | 0x401d | 0x4002,0x4013 |
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index a84bb8d..06c6271 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2536,6 +2536,7 @@ struct req_que {
srb_t **outstanding_cmds;
uint32_t current_outstanding_cmd;
uint16_t num_outstanding_cmds;
+#define MAX_Q_DEPTH 32
int max_q_depth;
};
@@ -3058,6 +3059,12 @@ struct qla_hw_data {
struct work_struct idc_state_handler;
struct work_struct nic_core_unrecoverable;
+#define HOST_QUEUE_RAMPDOWN_INTERVAL (60 * HZ)
+#define HOST_QUEUE_RAMPUP_INTERVAL (30 * HZ)
+ unsigned long host_last_rampdown_time;
+ unsigned long host_last_rampup_time;
+ int cfg_lun_q_depth;
+
struct qlt_hw_data tgt;
};
@@ -3117,6 +3124,8 @@ typedef struct scsi_qla_host {
#define MPI_RESET_NEEDED 19 /* Initiate MPI FW reset */
#define ISP_QUIESCE_NEEDED 20 /* Driver need some quiescence */
#define SCR_PENDING 21 /* SCR in target mode */
+#define HOST_RAMP_DOWN_QUEUE_DEPTH 22
+#define HOST_RAMP_UP_QUEUE_DEPTH 23
uint32_t device_flags;
#define SWITCH_FOUND BIT_0
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index fba0651..1732713 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -97,6 +97,7 @@ extern int qlport_down_retry;
extern int ql2xplogiabsentdevice;
extern int ql2xloginretrycount;
extern int ql2xfdmienable;
+extern int ql2xmaxqdepth;
extern int ql2xallocfwdump;
extern int ql2xextended_error_logging;
extern int ql2xiidmaenable;
diff --git a/drivers/scsi/qla2xxx/qla_inline.h b/drivers/scsi/qla2xxx/qla_inline.h
index c0462c0..deb8618 100644
--- a/drivers/scsi/qla2xxx/qla_inline.h
+++ b/drivers/scsi/qla2xxx/qla_inline.h
@@ -213,3 +213,22 @@ qla2x00_gid_list_size(struct qla_hw_data *ha)
{
return sizeof(struct gid_list_info) * ha->max_fibre_devices;
}
+
+static inline void
+qla2x00_do_host_ramp_up(scsi_qla_host_t *vha)
+{
+ if (vha->hw->cfg_lun_q_depth >= ql2xmaxqdepth)
+ return;
+
+ /* Wait at least HOST_QUEUE_RAMPDOWN_INTERVAL before ramping up */
+ if (time_before(jiffies, (vha->hw->host_last_rampdown_time +
+ HOST_QUEUE_RAMPDOWN_INTERVAL)))
+ return;
+
+ /* Wait at least HOST_QUEUE_RAMPUP_INTERVAL between each ramp up */
+ if (time_before(jiffies, (vha->hw->host_last_rampup_time +
+ HOST_QUEUE_RAMPUP_INTERVAL)))
+ return;
+
+ set_bit(HOST_RAMP_UP_QUEUE_DEPTH, &vha->dpc_flags);
+}
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 4513073..1b192c8 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -1934,6 +1934,7 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
/* Fast path completion. */
if (comp_status == CS_COMPLETE && scsi_status == 0) {
+ qla2x00_do_host_ramp_up(vha);
qla2x00_process_completed_request(vha, req, handle);
return;
@@ -2193,6 +2194,9 @@ out:
cp->cmnd[8], cp->cmnd[9], scsi_bufflen(cp), rsp_info_len,
resid_len, fw_resid_len);
+ if (!res)
+ qla2x00_do_host_ramp_up(vha);
+
if (rsp->status_srb == NULL)
sp->done(ha, sp, res);
}
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 53efffc..da86d38 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -111,8 +111,7 @@ MODULE_PARM_DESC(ql2xfdmienable,
"Enables FDMI registrations. "
"0 - no FDMI. Default is 1 - perform FDMI.");
-#define MAX_Q_DEPTH 32
-static int ql2xmaxqdepth = MAX_Q_DEPTH;
+int ql2xmaxqdepth = MAX_Q_DEPTH;
module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xmaxqdepth,
"Maximum queue depth to set for each LUN. "
@@ -720,8 +719,10 @@ qla2xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
}
sp = qla2x00_get_sp(base_vha, fcport, GFP_ATOMIC);
- if (!sp)
+ if (!sp) {
+ set_bit(HOST_RAMP_DOWN_QUEUE_DEPTH, &vha->dpc_flags);
goto qc24_host_busy;
+ }
sp->u.scmd.cmd = cmd;
sp->type = SRB_SCSI_CMD;
@@ -734,6 +735,7 @@ qla2xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
if (rval != QLA_SUCCESS) {
ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x3013,
"Start scsi failed rval=%d for cmd=%p.\n", rval, cmd);
+ set_bit(HOST_RAMP_DOWN_QUEUE_DEPTH, &vha->dpc_flags);
goto qc24_host_busy_free_sp;
}
@@ -1458,6 +1460,81 @@ qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
return tag_type;
}
+static void
+qla2x00_host_ramp_down_queuedepth(scsi_qla_host_t *vha)
+{
+ scsi_qla_host_t *vp;
+ struct Scsi_Host *shost;
+ struct scsi_device *sdev;
+ struct qla_hw_data *ha = vha->hw;
+ unsigned long flags;
+
+ ha->host_last_rampdown_time = jiffies;
+
+ if (ha->cfg_lun_q_depth <= vha->host->cmd_per_lun)
+ return;
+
+ if ((ha->cfg_lun_q_depth / 2) < vha->host->cmd_per_lun)
+ ha->cfg_lun_q_depth = vha->host->cmd_per_lun;
+ else
+ ha->cfg_lun_q_depth = ha->cfg_lun_q_depth / 2;
+
+ /*
+ * Geometrically ramp down the queue depth for all devices on this
+ * adapter
+ */
+ spin_lock_irqsave(&ha->vport_slock, flags);
+ list_for_each_entry(vp, &ha->vp_list, list) {
+ shost = vp->host;
+ shost_for_each_device(sdev, shost) {
+ if (sdev->queue_depth > shost->cmd_per_lun) {
+ if (sdev->queue_depth < ha->cfg_lun_q_depth)
+ continue;
+ ql_log(ql_log_warn, vp, 0x3031,
+ "%ld:%d:%d: Ramping down queue depth to %d",
+ vp->host_no, sdev->id, sdev->lun,
+ ha->cfg_lun_q_depth);
+ qla2x00_change_queue_depth(sdev,
+ ha->cfg_lun_q_depth, SCSI_QDEPTH_DEFAULT);
+ }
+ }
+ }
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+
+ return;
+}
+
+static void
+qla2x00_host_ramp_up_queuedepth(scsi_qla_host_t *vha)
+{
+ scsi_qla_host_t *vp;
+ struct Scsi_Host *shost;
+ struct scsi_device *sdev;
+ struct qla_hw_data *ha = vha->hw;
+ unsigned long flags;
+
+ ha->host_last_rampup_time = jiffies;
+ ha->cfg_lun_q_depth++;
+
+ /*
+ * Linearly ramp up the queue depth for all devices on this
+ * adapter
+ */
+ spin_lock_irqsave(&ha->vport_slock, flags);
+ list_for_each_entry(vp, &ha->vp_list, list) {
+ shost = vp->host;
+ shost_for_each_device(sdev, shost) {
+ if (sdev->queue_depth > ha->cfg_lun_q_depth)
+ continue;
+ qla2x00_change_queue_depth(sdev, ha->cfg_lun_q_depth,
+ SCSI_QDEPTH_RAMP_UP);
+ }
+ }
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+
+ return;
+}
+
/**
* qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
* @ha: HA context
@@ -2235,6 +2312,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
ha->init_cb_size = sizeof(init_cb_t);
ha->link_data_rate = PORT_SPEED_UNKNOWN;
ha->optrom_size = OPTROM_SIZE_2300;
+ ha->cfg_lun_q_depth = ql2xmaxqdepth;
/* Assign ISP specific operations. */
if (IS_QLA2100(ha)) {
@@ -4610,6 +4688,18 @@ qla2x00_do_dpc(void *data)
qla2xxx_flash_npiv_conf(base_vha);
}
+ if (test_and_clear_bit(HOST_RAMP_DOWN_QUEUE_DEPTH,
+ &base_vha->dpc_flags)) {
+ /* Prevents simultaneous ramp up and down */
+ clear_bit(HOST_RAMP_UP_QUEUE_DEPTH,
+ &base_vha->dpc_flags);
+ qla2x00_host_ramp_down_queuedepth(base_vha);
+ }
+
+ if (test_and_clear_bit(HOST_RAMP_UP_QUEUE_DEPTH,
+ &base_vha->dpc_flags))
+ qla2x00_host_ramp_up_queuedepth(base_vha);
+
if (!ha->interrupts_on)
ha->isp_ops->enable_intrs(ha);
@@ -4807,7 +4897,9 @@ qla2x00_timer(scsi_qla_host_t *vha)
test_bit(ISP_UNRECOVERABLE, &vha->dpc_flags) ||
test_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags) ||
test_bit(VP_DPC_NEEDED, &vha->dpc_flags) ||
- test_bit(RELOGIN_NEEDED, &vha->dpc_flags))) {
+ test_bit(RELOGIN_NEEDED, &vha->dpc_flags) ||
+ test_bit(HOST_RAMP_DOWN_QUEUE_DEPTH, &vha->dpc_flags) ||
+ test_bit(HOST_RAMP_UP_QUEUE_DEPTH, &vha->dpc_flags))) {
ql_dbg(ql_dbg_timer, vha, 0x600b,
"isp_abort_needed=%d loop_resync_needed=%d "
"fcport_update_needed=%d start_dpc=%d "
@@ -4820,12 +4912,15 @@ qla2x00_timer(scsi_qla_host_t *vha)
ql_dbg(ql_dbg_timer, vha, 0x600c,
"beacon_blink_needed=%d isp_unrecoverable=%d "
"fcoe_ctx_reset_needed=%d vp_dpc_needed=%d "
- "relogin_needed=%d.\n",
+ "relogin_needed=%d, host_ramp_down_needed=%d "
+ "host_ramp_up_needed=%d.\n",
test_bit(BEACON_BLINK_NEEDED, &vha->dpc_flags),
test_bit(ISP_UNRECOVERABLE, &vha->dpc_flags),
test_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags),
test_bit(VP_DPC_NEEDED, &vha->dpc_flags),
- test_bit(RELOGIN_NEEDED, &vha->dpc_flags));
+ test_bit(RELOGIN_NEEDED, &vha->dpc_flags),
+ test_bit(HOST_RAMP_UP_QUEUE_DEPTH, &vha->dpc_flags),
+ test_bit(HOST_RAMP_DOWN_QUEUE_DEPTH, &vha->dpc_flags));
qla2xxx_wake_dpc(vha);
}
--
1.7.7
--
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