Commit b559b827 authored by Karan Tilak Kumar's avatar Karan Tilak Kumar Committed by Martin K. Petersen
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scsi: fnic: Define stats to track multiqueue (MQ) IOs 



Define an array to track IOs for the different queues, print the IO stats
in fnic get stats data.

Reviewed-by: default avatarSesidhar Baddela <sebaddel@cisco.com>
Reviewed-by: default avatarArulprabhu Ponnusamy <arulponn@cisco.com>
Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Signed-off-by: default avatarKaran Tilak Kumar <kartilak@cisco.com>
Link: https://lore.kernel.org/r/20231211173617.932990-9-kartilak@cisco.com


Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 8a8449ca

drivers/scsi/fnic/fnic_stats.h

+2 −0
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ 
/* Copyright 2013 Cisco Systems, Inc.  All rights reserved. */

#ifndef _FNIC_STATS_H_

#define _FNIC_STATS_H_

#define FNIC_MQ_MAX_QUEUES 64



struct stats_timestamps {

	struct timespec64 last_reset_time;
@@ -26,6 +27,7 @@ struct io_path_stats { 
	atomic64_t io_btw_10000_to_30000_msec;

	atomic64_t io_greater_than_30000_msec;

	atomic64_t current_max_io_time;

	atomic64_t ios[FNIC_MQ_MAX_QUEUES];

};



struct abort_stats {

drivers/scsi/fnic/fnic_trace.c

+11 −0
Original line number Diff line number Diff line
@@ -204,6 +204,7 @@ int fnic_get_stats_data(struct stats_debug_info *debug, 
	int len = 0;

	int buf_size = debug->buf_size;

	struct timespec64 val1, val2;

	int i = 0;



	ktime_get_real_ts64(&val1);

	len = scnprintf(debug->debug_buffer + len, buf_size - len,
@@ -266,6 +267,16 @@ int fnic_get_stats_data(struct stats_debug_info *debug, 
		  (u64)atomic64_read(&stats->io_stats.io_btw_10000_to_30000_msec),

		  (u64)atomic64_read(&stats->io_stats.io_greater_than_30000_msec));



	len += scnprintf(debug->debug_buffer + len, buf_size - len,

			"------------------------------------------\n"

			"\t\tIO Queues and cumulative IOs\n"

			"------------------------------------------\n");



	for (i = 0; i < FNIC_MQ_MAX_QUEUES; i++) {

		len += scnprintf(debug->debug_buffer + len, buf_size - len,

				"Q:%d -> %lld\n", i, (u64)atomic64_read(&stats->io_stats.ios[i]));

	}



	len += scnprintf(debug->debug_buffer + len, buf_size - len,

		  "\nCurrent Max IO time : %lld\n",

		  (u64)atomic64_read(&stats->io_stats.current_max_io_time));