From: Joe Carnuccio <joe.carnuccio@xxxxxxxxxx>
Properly initialize IO statistics to avoid initial 0xFFFFFFF (-1) values.
Cleanup/simplify usage of pointer to statistics structure.
Signed-off-by: Joe Carnuccio <joe.carnuccio@xxxxxxxxxx>
Signed-off-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_attr.c | 50 +++++++++++++++++++--------------------
drivers/scsi/qla2xxx/qla_def.h | 1 -
drivers/scsi/qla2xxx/qla_init.c | 3 +++
drivers/scsi/qla2xxx/qla_target.c | 16 ++++++-------
4 files changed, 36 insertions(+), 34 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index c9bcd82..e0256a4 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -1811,10 +1811,9 @@ qla2x00_get_fc_host_stats(struct Scsi_Host *shost)
int rval;
struct link_statistics *stats;
dma_addr_t stats_dma;
- struct fc_host_statistics *pfc_host_stat;
+ struct fc_host_statistics *p = &vha->fc_host_stat;
- pfc_host_stat = &vha->fc_host_stat;
- memset(pfc_host_stat, -1, sizeof(struct fc_host_statistics));
+ memset(p, -1, sizeof(*p));
if (IS_QLAFX00(vha->hw))
goto done;
@@ -1850,37 +1849,37 @@ qla2x00_get_fc_host_stats(struct Scsi_Host *shost)
if (rval != QLA_SUCCESS)
goto done_free;
- pfc_host_stat->link_failure_count = stats->link_fail_cnt;
- pfc_host_stat->loss_of_sync_count = stats->loss_sync_cnt;
- pfc_host_stat->loss_of_signal_count = stats->loss_sig_cnt;
- pfc_host_stat->prim_seq_protocol_err_count = stats->prim_seq_err_cnt;
- pfc_host_stat->invalid_tx_word_count = stats->inval_xmit_word_cnt;
- pfc_host_stat->invalid_crc_count = stats->inval_crc_cnt;
+ p->link_failure_count = stats->link_fail_cnt;
+ p->loss_of_sync_count = stats->loss_sync_cnt;
+ p->loss_of_signal_count = stats->loss_sig_cnt;
+ p->prim_seq_protocol_err_count = stats->prim_seq_err_cnt;
+ p->invalid_tx_word_count = stats->inval_xmit_word_cnt;
+ p->invalid_crc_count = stats->inval_crc_cnt;
if (IS_FWI2_CAPABLE(ha)) {
- pfc_host_stat->lip_count = stats->lip_cnt;
- pfc_host_stat->tx_frames = stats->tx_frames;
- pfc_host_stat->rx_frames = stats->rx_frames;
- pfc_host_stat->dumped_frames = stats->discarded_frames;
- pfc_host_stat->nos_count = stats->nos_rcvd;
- pfc_host_stat->error_frames =
+ p->lip_count = stats->lip_cnt;
+ p->tx_frames = stats->tx_frames;
+ p->rx_frames = stats->rx_frames;
+ p->dumped_frames = stats->discarded_frames;
+ p->nos_count = stats->nos_rcvd;
+ p->error_frames =
stats->dropped_frames + stats->discarded_frames;
- pfc_host_stat->rx_words = vha->qla_stats.input_bytes;
- pfc_host_stat->tx_words = vha->qla_stats.output_bytes;
+ p->rx_words = vha->qla_stats.input_bytes;
+ p->tx_words = vha->qla_stats.output_bytes;
}
- pfc_host_stat->fcp_control_requests = vha->qla_stats.control_requests;
- pfc_host_stat->fcp_input_requests = vha->qla_stats.input_requests;
- pfc_host_stat->fcp_output_requests = vha->qla_stats.output_requests;
- pfc_host_stat->fcp_input_megabytes = vha->qla_stats.input_bytes >> 20;
- pfc_host_stat->fcp_output_megabytes = vha->qla_stats.output_bytes >> 20;
- pfc_host_stat->seconds_since_last_reset =
+ p->fcp_control_requests = vha->qla_stats.control_requests;
+ p->fcp_input_requests = vha->qla_stats.input_requests;
+ p->fcp_output_requests = vha->qla_stats.output_requests;
+ p->fcp_input_megabytes = vha->qla_stats.input_bytes >> 20;
+ p->fcp_output_megabytes = vha->qla_stats.output_bytes >> 20;
+ p->seconds_since_last_reset =
get_jiffies_64() - vha->qla_stats.jiffies_at_last_reset;
- do_div(pfc_host_stat->seconds_since_last_reset, HZ);
+ do_div(p->seconds_since_last_reset, HZ);
done_free:
dma_free_coherent(&ha->pdev->dev, sizeof(struct link_statistics),
stats, stats_dma);
done:
- return pfc_host_stat;
+ return p;
}
static void
@@ -1888,6 +1887,7 @@ qla2x00_reset_host_stats(struct Scsi_Host *shost)
{
scsi_qla_host_t *vha = shost_priv(shost);
+ memset(&vha->qla_stats, 0, sizeof(vha->qla_stats));
memset(&vha->fc_host_stat, 0, sizeof(vha->fc_host_stat));
vha->qla_stats.jiffies_at_last_reset = get_jiffies_64();
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 2b7e4f5..a73ecc7 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -3508,7 +3508,6 @@ struct qla_hw_data {
int cur_vport_count;
struct qla_chip_state_84xx *cs84xx;
- struct qla_statistics qla_stats;
struct isp_operations *isp_ops;
struct workqueue_struct *wq;
struct qlfc_fw fw_buf;
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index a3685b6..68e9309 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -624,6 +624,9 @@ qla2x00_initialize_adapter(scsi_qla_host_t *vha)
struct qla_hw_data *ha = vha->hw;
struct req_que *req = ha->req_q_map[0];
+ memset(&vha->qla_stats, 0, sizeof(vha->qla_stats));
+ memset(&vha->fc_host_stat, 0, sizeof(vha->fc_host_stat));
+
/* Clear adapter flags. */
vha->flags.online = 0;
ha->flags.chip_reset_done = 0;
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index ca39deb..bff9689 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -215,8 +215,8 @@ static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
vha->hw->tgt.num_pend_cmds++;
- if (vha->hw->tgt.num_pend_cmds > vha->hw->qla_stats.stat_max_pend_cmds)
- vha->hw->qla_stats.stat_max_pend_cmds =
+ if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
+ vha->qla_stats.stat_max_pend_cmds =
vha->hw->tgt.num_pend_cmds;
spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
}
@@ -5231,8 +5231,8 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
vha->hw->tgt.num_qfull_cmds_dropped++;
if (vha->hw->tgt.num_qfull_cmds_dropped >
- vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
- vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
+ vha->qla_stats.stat_max_qfull_cmds_dropped)
+ vha->qla_stats.stat_max_qfull_cmds_dropped =
vha->hw->tgt.num_qfull_cmds_dropped;
ql_dbg(ql_dbg_io, vha, 0x3068,
@@ -5263,8 +5263,8 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
vha->hw->tgt.num_qfull_cmds_dropped++;
if (vha->hw->tgt.num_qfull_cmds_dropped >
- vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
- vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
+ vha->qla_stats.stat_max_qfull_cmds_dropped)
+ vha->qla_stats.stat_max_qfull_cmds_dropped =
vha->hw->tgt.num_qfull_cmds_dropped;
qlt_chk_exch_leak_thresh_hold(vha);
@@ -5293,8 +5293,8 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
vha->hw->tgt.num_qfull_cmds_alloc++;
if (vha->hw->tgt.num_qfull_cmds_alloc >
- vha->hw->qla_stats.stat_max_qfull_cmds_alloc)
- vha->hw->qla_stats.stat_max_qfull_cmds_alloc =
+ vha->qla_stats.stat_max_qfull_cmds_alloc)
+ vha->qla_stats.stat_max_qfull_cmds_alloc =
vha->hw->tgt.num_qfull_cmds_alloc;
}
--
2.7.2
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