snic: Added additional stats

Adding additional stats, and fixed logging messages.
- Added qdepth change stats
- Added separate isr stats for each type of interrupt
- Fixed race in updating active IOs
- Suppressed Link event message for DAS backend.

Signed-off-by: Narsimhulu Musini <nmusini@cisco.com>
Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 9 insertions, 3 deletions

diff --git a/drivers/scsi/snic/snic_stats.h b/drivers/scsi/snic/snic_stats.h
index 11e614849a82..fd1066b1cad5 100644
--- a/drivers/scsi/snic/snic_stats.h
+++ b/drivers/scsi/snic/snic_stats.h
@@ -42,6 +42,7 @@ struct snic_abort_stats {
 	atomic64_t drv_tmo;	/* Abort Driver Timeouts */
 	atomic64_t fw_tmo;	/* Abort Firmware Timeouts */
 	atomic64_t io_not_found;/* Abort IO Not Found */
+	atomic64_t q_fail;	/* Abort Queuing Failed */
 };
 
 struct snic_reset_stats {
@@ -69,7 +70,9 @@ struct snic_fw_stats {
 struct snic_misc_stats {
 	u64	last_isr_time;
 	u64	last_ack_time;
-	atomic64_t isr_cnt;
+	atomic64_t ack_isr_cnt;
+	atomic64_t cmpl_isr_cnt;
+	atomic64_t errnotify_isr_cnt;
 	atomic64_t max_cq_ents;		/* Max CQ Entries */
 	atomic64_t data_cnt_mismat;	/* Data Count Mismatch */
 	atomic64_t io_tmo;
@@ -81,6 +84,9 @@ struct snic_misc_stats {
 	atomic64_t no_icmnd_itmf_cmpls;
 	atomic64_t io_under_run;
 	atomic64_t qfull;
+	atomic64_t qsz_rampup;
+	atomic64_t qsz_rampdown;
+	atomic64_t last_qsz;
 	atomic64_t tgt_not_rdy;
 };
 
@@ -101,9 +107,9 @@ static inline void
 snic_stats_update_active_ios(struct snic_stats *s_stats)
 {
 	struct snic_io_stats *io = &s_stats->io;
-	u32 nr_active_ios;
+	int nr_active_ios;
 
-	nr_active_ios = atomic64_inc_return(&io->active);
+	nr_active_ios = atomic64_read(&io->active);
 	if (atomic64_read(&io->max_active) < nr_active_ios)
 		atomic64_set(&io->max_active, nr_active_ios);