linux-kernel - [PATCH 11/11] scsi: scsi_debug: Add poll mode deferred completions to statistics

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Message-Id: <20230307105555.3745277-12-john.g.garry@oracle.com>
Date:   Tue,  7 Mar 2023 10:55:55 +0000
From:   John Garry <john.g.garry@...cle.com>
To:     jejb@...ux.ibm.com, martin.petersen@...cle.com
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        dgilbert@...erlog.com, John Garry <john.g.garry@...cle.com>
Subject: [PATCH 11/11] scsi: scsi_debug: Add poll mode deferred completions to statistics

Currently commands completed via poll mode are not included in the
statistics gathering for deferred completions and missed CPUs.

Poll mode completions should be treated the same as other deferred
completion types, so add poll mode completions to the statistics.

Signed-off-by: John Garry <john.g.garry@...cle.com>
---
 drivers/scsi/scsi_debug.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 6cf30fceab78..76ff8ca6070d 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -7537,6 +7537,13 @@ static int sdebug_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num)
 		}
 		WRITE_ONCE(sd_dp->defer_t, SDEB_DEFER_NONE);
 		spin_unlock_irqrestore(&sqp->qc_lock, iflags);
+
+		if (sdebug_statistics) {
+			atomic_inc(&sdebug_completions);
+			if (raw_smp_processor_id() != sd_dp->issuing_cpu)
+				atomic_inc(&sdebug_miss_cpus);
+		}
+
 		scsi_done(scp); /* callback to mid level */
 		num_entries++;
 		spin_lock_irqsave(&sqp->qc_lock, iflags);
-- 
2.35.3