1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6 #include "xfs.h"
7
8 struct xstats xfsstats;
9
10 static int counter_val(struct xfsstats __percpu *stats, int idx)
11 {
12 int val = 0, cpu;
13
14 for_each_possible_cpu(cpu)
15 val += *(((__u32 *)per_cpu_ptr(stats, cpu) + idx));
16 return val;
17 }
18
19 int xfs_stats_format(struct xfsstats __percpu *stats, char *buf)
20 {
21 int i, j;
22 int len = 0;
23 uint64_t xs_xstrat_bytes = 0;
24 uint64_t xs_write_bytes = 0;
25 uint64_t xs_read_bytes = 0;
26 uint64_t defer_relog = 0;
27
28 static const struct xstats_entry {
29 char *desc;
30 int endpoint;
31 } xstats[] = {
32 { "extent_alloc", xfsstats_offset(xs_abt_lookup) },
33 { "abt", xfsstats_offset(xs_blk_mapr) },
34 { "blk_map", xfsstats_offset(xs_bmbt_lookup) },
35 { "bmbt", xfsstats_offset(xs_dir_lookup) },
36 { "dir", xfsstats_offset(xs_trans_sync) },
37 { "trans", xfsstats_offset(xs_ig_attempts) },
38 { "ig", xfsstats_offset(xs_log_writes) },
39 { "log", xfsstats_offset(xs_try_logspace)},
40 { "push_ail", xfsstats_offset(xs_xstrat_quick)},
41 { "xstrat", xfsstats_offset(xs_write_calls) },
42 { "rw", xfsstats_offset(xs_attr_get) },
43 { "attr", xfsstats_offset(xs_iflush_count)},
44 { "icluster", xfsstats_offset(vn_active) },
45 { "vnodes", xfsstats_offset(xb_get) },
46 { "buf", xfsstats_offset(xs_abtb_2) },
47 { "abtb2", xfsstats_offset(xs_abtc_2) },
48 { "abtc2", xfsstats_offset(xs_bmbt_2) },
49 { "bmbt2", xfsstats_offset(xs_ibt_2) },
50 { "ibt2", xfsstats_offset(xs_fibt_2) },
51 { "fibt2", xfsstats_offset(xs_rmap_2) },
52 { "rmapbt", xfsstats_offset(xs_refcbt_2) },
53 { "refcntbt", xfsstats_offset(xs_rmap_mem_2) },
54 { "rmapbt_mem", xfsstats_offset(xs_rcbag_2) },
55 { "rcbagbt", xfsstats_offset(xs_qm_dqreclaims)},
56 /* we print both series of quota information together */
57 { "qm", xfsstats_offset(xs_xstrat_bytes)},
58 };
59
60 /* Loop over all stats groups */
61
62 for (i = j = 0; i < ARRAY_SIZE(xstats); i++) {
63 len += scnprintf(buf + len, PATH_MAX - len, "%s",
64 xstats[i].desc);
65 /* inner loop does each group */
66 for (; j < xstats[i].endpoint; j++)
67 len += scnprintf(buf + len, PATH_MAX - len, " %u",
68 counter_val(stats, j));
69 len += scnprintf(buf + len, PATH_MAX - len, "\n");
70 }
71 /* extra precision counters */
72 for_each_possible_cpu(i) {
73 xs_xstrat_bytes += per_cpu_ptr(stats, i)->s.xs_xstrat_bytes;
74 xs_write_bytes += per_cpu_ptr(stats, i)->s.xs_write_bytes;
75 xs_read_bytes += per_cpu_ptr(stats, i)->s.xs_read_bytes;
76 defer_relog += per_cpu_ptr(stats, i)->s.defer_relog;
77 }
78
79 len += scnprintf(buf + len, PATH_MAX-len, "xpc %llu %llu %llu\n",
80 xs_xstrat_bytes, xs_write_bytes, xs_read_bytes);
81 len += scnprintf(buf + len, PATH_MAX-len, "defer_relog %llu\n",
82 defer_relog);
83 len += scnprintf(buf + len, PATH_MAX-len, "debug %u\n",
84 #if defined(DEBUG)
85 1);
86 #else
87 0);
88 #endif
89
90 return len;
91 }
92
93 void xfs_stats_clearall(struct xfsstats __percpu *stats)
94 {
95 int c;
96 uint32_t vn_active;
97
98 xfs_notice(NULL, "Clearing xfsstats");
99 for_each_possible_cpu(c) {
100 preempt_disable();
101 /* save vn_active, it's a universal truth! */
102 vn_active = per_cpu_ptr(stats, c)->s.vn_active;
103 memset(per_cpu_ptr(stats, c), 0, sizeof(*stats));
104 per_cpu_ptr(stats, c)->s.vn_active = vn_active;
105 preempt_enable();
106 }
107 }
108
109 #ifdef CONFIG_PROC_FS
110 /* legacy quota interfaces */
111 #ifdef CONFIG_XFS_QUOTA
112
113 #define XFSSTAT_START_XQMSTAT xfsstats_offset(xs_qm_dqreclaims)
114 #define XFSSTAT_END_XQMSTAT xfsstats_offset(xs_qm_dquot)
115
116 static int xqm_proc_show(struct seq_file *m, void *v)
117 {
118 /* maximum; incore; ratio free to inuse; freelist */
119 seq_printf(m, "%d\t%d\t%d\t%u\n",
120 0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT),
121 0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT + 1));
122 return 0;
123 }
124
125 /* legacy quota stats interface no 2 */
126 static int xqmstat_proc_show(struct seq_file *m, void *v)
127 {
128 int j;
129
130 seq_puts(m, "qm");
131 for (j = XFSSTAT_START_XQMSTAT; j < XFSSTAT_END_XQMSTAT; j++)
132 seq_printf(m, " %u", counter_val(xfsstats.xs_stats, j));
133 seq_putc(m, '\n');
134 return 0;
135 }
136 #endif /* CONFIG_XFS_QUOTA */
137
138 int
139 xfs_init_procfs(void)
140 {
141 if (!proc_mkdir("fs/xfs", NULL))
142 return -ENOMEM;
143
144 if (!proc_symlink("fs/xfs/stat", NULL,
145 "/sys/fs/xfs/stats/stats"))
146 goto out;
147
148 #ifdef CONFIG_XFS_QUOTA
149 if (!proc_create_single("fs/xfs/xqmstat", 0, NULL, xqmstat_proc_show))
150 goto out;
151 if (!proc_create_single("fs/xfs/xqm", 0, NULL, xqm_proc_show))
152 goto out;
153 #endif
154 return 0;
155
156 out:
157 remove_proc_subtree("fs/xfs", NULL);
158 return -ENOMEM;
159 }
160
161 void
162 xfs_cleanup_procfs(void)
163 {
164 remove_proc_subtree("fs/xfs", NULL);
165 }
166 #endif /* CONFIG_PROC_FS */
167
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