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
counter_val(struct xfsstats __percpu * stats,int idx)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
xfs_stats_format(struct xfsstats __percpu * stats,char * buf)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_rtrmap_2) },
56 { "rtrmapbt", xfsstats_offset(xs_rtrmap_mem_2)},
57 { "rtrmapbt_mem", xfsstats_offset(xs_rtrefcbt_2) },
58 { "rtrefcntbt", xfsstats_offset(xs_qm_dqreclaims)},
59 /* we print both series of quota information together */
60 { "qm", xfsstats_offset(xs_xstrat_bytes)},
61 };
62
63 /* Loop over all stats groups */
64
65 for (i = j = 0; i < ARRAY_SIZE(xstats); i++) {
66 len += scnprintf(buf + len, PATH_MAX - len, "%s",
67 xstats[i].desc);
68 /* inner loop does each group */
69 for (; j < xstats[i].endpoint; j++)
70 len += scnprintf(buf + len, PATH_MAX - len, " %u",
71 counter_val(stats, j));
72 len += scnprintf(buf + len, PATH_MAX - len, "\n");
73 }
74 /* extra precision counters */
75 for_each_possible_cpu(i) {
76 xs_xstrat_bytes += per_cpu_ptr(stats, i)->s.xs_xstrat_bytes;
77 xs_write_bytes += per_cpu_ptr(stats, i)->s.xs_write_bytes;
78 xs_read_bytes += per_cpu_ptr(stats, i)->s.xs_read_bytes;
79 defer_relog += per_cpu_ptr(stats, i)->s.defer_relog;
80 }
81
82 len += scnprintf(buf + len, PATH_MAX-len, "xpc %llu %llu %llu\n",
83 xs_xstrat_bytes, xs_write_bytes, xs_read_bytes);
84 len += scnprintf(buf + len, PATH_MAX-len, "defer_relog %llu\n",
85 defer_relog);
86 len += scnprintf(buf + len, PATH_MAX-len, "debug %u\n",
87 #if defined(DEBUG)
88 1);
89 #else
90 0);
91 #endif
92
93 return len;
94 }
95
xfs_stats_clearall(struct xfsstats __percpu * stats)96 void xfs_stats_clearall(struct xfsstats __percpu *stats)
97 {
98 int c;
99 uint32_t vn_active;
100
101 xfs_notice(NULL, "Clearing xfsstats");
102 for_each_possible_cpu(c) {
103 preempt_disable();
104 /* save vn_active, it's a universal truth! */
105 vn_active = per_cpu_ptr(stats, c)->s.vn_active;
106 memset(per_cpu_ptr(stats, c), 0, sizeof(*stats));
107 per_cpu_ptr(stats, c)->s.vn_active = vn_active;
108 preempt_enable();
109 }
110 }
111
112 #ifdef CONFIG_PROC_FS
113 /* legacy quota interfaces */
114 #ifdef CONFIG_XFS_QUOTA
115
116 #define XFSSTAT_START_XQMSTAT xfsstats_offset(xs_qm_dqreclaims)
117 #define XFSSTAT_END_XQMSTAT xfsstats_offset(xs_qm_dquot)
118
xqm_proc_show(struct seq_file * m,void * v)119 static int xqm_proc_show(struct seq_file *m, void *v)
120 {
121 /* maximum; incore; ratio free to inuse; freelist; rtquota */
122 seq_printf(m, "%d\t%d\t%d\t%u\t%s\n",
123 0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT),
124 0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT + 1),
125 IS_ENABLED(CONFIG_XFS_RT) ? "rtquota" : "quota");
126 return 0;
127 }
128
129 /* legacy quota stats interface no 2 */
xqmstat_proc_show(struct seq_file * m,void * v)130 static int xqmstat_proc_show(struct seq_file *m, void *v)
131 {
132 int j;
133
134 seq_puts(m, "qm");
135 for (j = XFSSTAT_START_XQMSTAT; j < XFSSTAT_END_XQMSTAT; j++)
136 seq_printf(m, " %u", counter_val(xfsstats.xs_stats, j));
137 seq_putc(m, '\n');
138 return 0;
139 }
140 #endif /* CONFIG_XFS_QUOTA */
141
142 int
xfs_init_procfs(void)143 xfs_init_procfs(void)
144 {
145 if (!proc_mkdir("fs/xfs", NULL))
146 return -ENOMEM;
147
148 if (!proc_symlink("fs/xfs/stat", NULL,
149 "/sys/fs/xfs/stats/stats"))
150 goto out;
151
152 #ifdef CONFIG_XFS_QUOTA
153 if (!proc_create_single("fs/xfs/xqmstat", 0, NULL, xqmstat_proc_show))
154 goto out;
155 if (!proc_create_single("fs/xfs/xqm", 0, NULL, xqm_proc_show))
156 goto out;
157 #endif
158 return 0;
159
160 out:
161 remove_proc_subtree("fs/xfs", NULL);
162 return -ENOMEM;
163 }
164
165 void
xfs_cleanup_procfs(void)166 xfs_cleanup_procfs(void)
167 {
168 remove_proc_subtree("fs/xfs", NULL);
169 }
170 #endif /* CONFIG_PROC_FS */
171