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_read_single;
16atomic_t netfs_n_rh_rreq;
17atomic_t netfs_n_rh_sreq;
18atomic_t netfs_n_rh_download;
19atomic_t netfs_n_rh_download_done;
20atomic_t netfs_n_rh_download_failed;
21atomic_t netfs_n_rh_download_instead;
22atomic_t netfs_n_rh_read;
23atomic_t netfs_n_rh_read_done;
24atomic_t netfs_n_rh_read_failed;
25atomic_t netfs_n_rh_zero;
26atomic_t netfs_n_rh_short_read;
27atomic_t netfs_n_rh_write;
28atomic_t netfs_n_rh_write_begin;
29atomic_t netfs_n_rh_write_done;
30atomic_t netfs_n_rh_write_failed;
31atomic_t netfs_n_rh_write_zskip;
32atomic_t netfs_n_rh_retry_read_req;
33atomic_t netfs_n_rh_retry_read_subreq;
34atomic_t netfs_n_wh_buffered_write;
35atomic_t netfs_n_wh_writethrough;
36atomic_t netfs_n_wh_dio_write;
37atomic_t netfs_n_wh_writepages;
38atomic_t netfs_n_wh_copy_to_cache;
39atomic_t netfs_n_wh_wstream_conflict;
40atomic_t netfs_n_wh_upload;
41atomic_t netfs_n_wh_upload_done;
42atomic_t netfs_n_wh_upload_failed;
43atomic_t netfs_n_wh_write;
44atomic_t netfs_n_wh_write_done;
45atomic_t netfs_n_wh_write_failed;
46atomic_t netfs_n_wh_retry_write_req;
47atomic_t netfs_n_wh_retry_write_subreq;
48atomic_t netfs_n_wb_lock_skip;
49atomic_t netfs_n_wb_lock_wait;
50atomic_t netfs_n_folioq;
51
52int netfs_stats_show(struct seq_file *m, void *v)
53{
54 seq_printf(m, fmt: "Reads : DR=%u RA=%u RF=%u RS=%u WB=%u WBZ=%u\n",
55 atomic_read(v: &netfs_n_rh_dio_read),
56 atomic_read(v: &netfs_n_rh_readahead),
57 atomic_read(v: &netfs_n_rh_read_folio),
58 atomic_read(v: &netfs_n_rh_read_single),
59 atomic_read(v: &netfs_n_rh_write_begin),
60 atomic_read(v: &netfs_n_rh_write_zskip));
61 seq_printf(m, fmt: "Writes : BW=%u WT=%u DW=%u WP=%u 2C=%u\n",
62 atomic_read(v: &netfs_n_wh_buffered_write),
63 atomic_read(v: &netfs_n_wh_writethrough),
64 atomic_read(v: &netfs_n_wh_dio_write),
65 atomic_read(v: &netfs_n_wh_writepages),
66 atomic_read(v: &netfs_n_wh_copy_to_cache));
67 seq_printf(m, fmt: "ZeroOps: ZR=%u sh=%u sk=%u\n",
68 atomic_read(v: &netfs_n_rh_zero),
69 atomic_read(v: &netfs_n_rh_short_read),
70 atomic_read(v: &netfs_n_rh_write_zskip));
71 seq_printf(m, fmt: "DownOps: DL=%u ds=%u df=%u di=%u\n",
72 atomic_read(v: &netfs_n_rh_download),
73 atomic_read(v: &netfs_n_rh_download_done),
74 atomic_read(v: &netfs_n_rh_download_failed),
75 atomic_read(v: &netfs_n_rh_download_instead));
76 seq_printf(m, fmt: "CaRdOps: RD=%u rs=%u rf=%u\n",
77 atomic_read(v: &netfs_n_rh_read),
78 atomic_read(v: &netfs_n_rh_read_done),
79 atomic_read(v: &netfs_n_rh_read_failed));
80 seq_printf(m, fmt: "UpldOps: UL=%u us=%u uf=%u\n",
81 atomic_read(v: &netfs_n_wh_upload),
82 atomic_read(v: &netfs_n_wh_upload_done),
83 atomic_read(v: &netfs_n_wh_upload_failed));
84 seq_printf(m, fmt: "CaWrOps: WR=%u ws=%u wf=%u\n",
85 atomic_read(v: &netfs_n_wh_write),
86 atomic_read(v: &netfs_n_wh_write_done),
87 atomic_read(v: &netfs_n_wh_write_failed));
88 seq_printf(m, fmt: "Retries: rq=%u rs=%u wq=%u ws=%u\n",
89 atomic_read(v: &netfs_n_rh_retry_read_req),
90 atomic_read(v: &netfs_n_rh_retry_read_subreq),
91 atomic_read(v: &netfs_n_wh_retry_write_req),
92 atomic_read(v: &netfs_n_wh_retry_write_subreq));
93 seq_printf(m, fmt: "Objs : rr=%u sr=%u foq=%u wsc=%u\n",
94 atomic_read(v: &netfs_n_rh_rreq),
95 atomic_read(v: &netfs_n_rh_sreq),
96 atomic_read(v: &netfs_n_folioq),
97 atomic_read(v: &netfs_n_wh_wstream_conflict));
98 seq_printf(m, fmt: "WbLock : skip=%u wait=%u\n",
99 atomic_read(v: &netfs_n_wb_lock_skip),
100 atomic_read(v: &netfs_n_wb_lock_wait));
101 return fscache_stats_show(m);
102}
103EXPORT_SYMBOL(netfs_stats_show);
104

source code of linux/fs/netfs/stats.c