1// SPDX-License-Identifier: GPL-2.0-or-later
 2/* Netfs support statistics
 3 *
 4 * Copyright (C) 2021 Red Hat, Inc. All Rights Reserved.
 5 * Written by David Howells (dhowells@redhat.com)
 6 */
 7
 8#include <linux/export.h>
 9#include <linux/seq_file.h>
10#include "internal.h"
11
12atomic_t netfs_n_rh_dio_read;
13atomic_t netfs_n_rh_readahead;
14atomic_t netfs_n_rh_read_folio;
15atomic_t netfs_n_rh_rreq;
16atomic_t netfs_n_rh_sreq;
17atomic_t netfs_n_rh_download;
18atomic_t netfs_n_rh_download_done;
19atomic_t netfs_n_rh_download_failed;
20atomic_t netfs_n_rh_download_instead;
21atomic_t netfs_n_rh_read;
22atomic_t netfs_n_rh_read_done;
23atomic_t netfs_n_rh_read_failed;
24atomic_t netfs_n_rh_zero;
25atomic_t netfs_n_rh_short_read;
26atomic_t netfs_n_rh_write;
27atomic_t netfs_n_rh_write_begin;
28atomic_t netfs_n_rh_write_done;
29atomic_t netfs_n_rh_write_failed;
30atomic_t netfs_n_rh_write_zskip;
31atomic_t netfs_n_wh_buffered_write;
32atomic_t netfs_n_wh_writethrough;
33atomic_t netfs_n_wh_dio_write;
34atomic_t netfs_n_wh_writepages;
35atomic_t netfs_n_wh_copy_to_cache;
36atomic_t netfs_n_wh_wstream_conflict;
37atomic_t netfs_n_wh_upload;
38atomic_t netfs_n_wh_upload_done;
39atomic_t netfs_n_wh_upload_failed;
40atomic_t netfs_n_wh_write;
41atomic_t netfs_n_wh_write_done;
42atomic_t netfs_n_wh_write_failed;
43atomic_t netfs_n_wb_lock_skip;
44atomic_t netfs_n_wb_lock_wait;
45atomic_t netfs_n_folioq;
46
47int netfs_stats_show(struct seq_file *m, void *v)
48{
49	seq_printf(m, "Reads  : DR=%u RA=%u RF=%u WB=%u WBZ=%u\n",
50		   atomic_read(&netfs_n_rh_dio_read),
51		   atomic_read(&netfs_n_rh_readahead),
52		   atomic_read(&netfs_n_rh_read_folio),
53		   atomic_read(&netfs_n_rh_write_begin),
54		   atomic_read(&netfs_n_rh_write_zskip));
55	seq_printf(m, "Writes : BW=%u WT=%u DW=%u WP=%u 2C=%u\n",
56		   atomic_read(&netfs_n_wh_buffered_write),
57		   atomic_read(&netfs_n_wh_writethrough),
58		   atomic_read(&netfs_n_wh_dio_write),
59		   atomic_read(&netfs_n_wh_writepages),
60		   atomic_read(&netfs_n_wh_copy_to_cache));
61	seq_printf(m, "ZeroOps: ZR=%u sh=%u sk=%u\n",
62		   atomic_read(&netfs_n_rh_zero),
63		   atomic_read(&netfs_n_rh_short_read),
64		   atomic_read(&netfs_n_rh_write_zskip));
65	seq_printf(m, "DownOps: DL=%u ds=%u df=%u di=%u\n",
66		   atomic_read(&netfs_n_rh_download),
67		   atomic_read(&netfs_n_rh_download_done),
68		   atomic_read(&netfs_n_rh_download_failed),
69		   atomic_read(&netfs_n_rh_download_instead));
70	seq_printf(m, "CaRdOps: RD=%u rs=%u rf=%u\n",
71		   atomic_read(&netfs_n_rh_read),
72		   atomic_read(&netfs_n_rh_read_done),
73		   atomic_read(&netfs_n_rh_read_failed));
74	seq_printf(m, "UpldOps: UL=%u us=%u uf=%u\n",
75		   atomic_read(&netfs_n_wh_upload),
76		   atomic_read(&netfs_n_wh_upload_done),
77		   atomic_read(&netfs_n_wh_upload_failed));
78	seq_printf(m, "CaWrOps: WR=%u ws=%u wf=%u\n",
79		   atomic_read(&netfs_n_wh_write),
80		   atomic_read(&netfs_n_wh_write_done),
81		   atomic_read(&netfs_n_wh_write_failed));
82	seq_printf(m, "Objs   : rr=%u sr=%u foq=%u wsc=%u\n",
83		   atomic_read(&netfs_n_rh_rreq),
84		   atomic_read(&netfs_n_rh_sreq),
85		   atomic_read(&netfs_n_folioq),
86		   atomic_read(&netfs_n_wh_wstream_conflict));
87	seq_printf(m, "WbLock : skip=%u wait=%u\n",
88		   atomic_read(&netfs_n_wb_lock_skip),
89		   atomic_read(&netfs_n_wb_lock_wait));
90	return fscache_stats_show(m);
91}
92EXPORT_SYMBOL(netfs_stats_show);