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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
7b718769 NS |
3 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 | 5 | */ |
1da177e4 | 6 | #include "xfs.h" |
1da177e4 | 7 | |
80529c45 | 8 | struct xstats xfsstats; |
1da177e4 | 9 | |
80529c45 | 10 | static int counter_val(struct xfsstats __percpu *stats, int idx) |
48776fd2 CH |
11 | { |
12 | int val = 0, cpu; | |
13 | ||
14 | for_each_possible_cpu(cpu) | |
80529c45 | 15 | val += *(((__u32 *)per_cpu_ptr(stats, cpu) + idx)); |
48776fd2 CH |
16 | return val; |
17 | } | |
18 | ||
80529c45 | 19 | int xfs_stats_format(struct xfsstats __percpu *stats, char *buf) |
bb230c12 BD |
20 | { |
21 | int i, j; | |
22 | int len = 0; | |
c8ce540d DW |
23 | uint64_t xs_xstrat_bytes = 0; |
24 | uint64_t xs_write_bytes = 0; | |
25 | uint64_t xs_read_bytes = 0; | |
bb230c12 BD |
26 | |
27 | static const struct xstats_entry { | |
28 | char *desc; | |
29 | int endpoint; | |
30 | } xstats[] = { | |
26ca3901 CM |
31 | { "extent_alloc", xfsstats_offset(xs_abt_lookup) }, |
32 | { "abt", xfsstats_offset(xs_blk_mapr) }, | |
33 | { "blk_map", xfsstats_offset(xs_bmbt_lookup) }, | |
34 | { "bmbt", xfsstats_offset(xs_dir_lookup) }, | |
35 | { "dir", xfsstats_offset(xs_trans_sync) }, | |
36 | { "trans", xfsstats_offset(xs_ig_attempts) }, | |
37 | { "ig", xfsstats_offset(xs_log_writes) }, | |
38 | { "log", xfsstats_offset(xs_try_logspace)}, | |
39 | { "push_ail", xfsstats_offset(xs_xstrat_quick)}, | |
40 | { "xstrat", xfsstats_offset(xs_write_calls) }, | |
41 | { "rw", xfsstats_offset(xs_attr_get) }, | |
42 | { "attr", xfsstats_offset(xs_iflush_count)}, | |
43 | { "icluster", xfsstats_offset(vn_active) }, | |
44 | { "vnodes", xfsstats_offset(xb_get) }, | |
45 | { "buf", xfsstats_offset(xs_abtb_2) }, | |
46 | { "abtb2", xfsstats_offset(xs_abtc_2) }, | |
47 | { "abtc2", xfsstats_offset(xs_bmbt_2) }, | |
48 | { "bmbt2", xfsstats_offset(xs_ibt_2) }, | |
49 | { "ibt2", xfsstats_offset(xs_fibt_2) }, | |
50 | { "fibt2", xfsstats_offset(xs_rmap_2) }, | |
51 | { "rmapbt", xfsstats_offset(xs_refcbt_2) }, | |
52 | { "refcntbt", xfsstats_offset(xs_qm_dqreclaims)}, | |
bb230c12 | 53 | /* we print both series of quota information together */ |
26ca3901 | 54 | { "qm", xfsstats_offset(xs_xstrat_bytes)}, |
bb230c12 BD |
55 | }; |
56 | ||
57 | /* Loop over all stats groups */ | |
58 | ||
59 | for (i = j = 0; i < ARRAY_SIZE(xstats); i++) { | |
60 | len += snprintf(buf + len, PATH_MAX - len, "%s", | |
61 | xstats[i].desc); | |
62 | /* inner loop does each group */ | |
63 | for (; j < xstats[i].endpoint; j++) | |
64 | len += snprintf(buf + len, PATH_MAX - len, " %u", | |
80529c45 | 65 | counter_val(stats, j)); |
bb230c12 BD |
66 | len += snprintf(buf + len, PATH_MAX - len, "\n"); |
67 | } | |
68 | /* extra precision counters */ | |
69 | for_each_possible_cpu(i) { | |
11ef38af DC |
70 | xs_xstrat_bytes += per_cpu_ptr(stats, i)->s.xs_xstrat_bytes; |
71 | xs_write_bytes += per_cpu_ptr(stats, i)->s.xs_write_bytes; | |
72 | xs_read_bytes += per_cpu_ptr(stats, i)->s.xs_read_bytes; | |
bb230c12 BD |
73 | } |
74 | ||
75 | len += snprintf(buf + len, PATH_MAX-len, "xpc %Lu %Lu %Lu\n", | |
76 | xs_xstrat_bytes, xs_write_bytes, xs_read_bytes); | |
77 | len += snprintf(buf + len, PATH_MAX-len, "debug %u\n", | |
78 | #if defined(DEBUG) | |
79 | 1); | |
80 | #else | |
81 | 0); | |
82 | #endif | |
83 | ||
84 | return len; | |
85 | } | |
86 | ||
80529c45 | 87 | void xfs_stats_clearall(struct xfsstats __percpu *stats) |
bb230c12 BD |
88 | { |
89 | int c; | |
c8ce540d | 90 | uint32_t vn_active; |
bb230c12 BD |
91 | |
92 | xfs_notice(NULL, "Clearing xfsstats"); | |
93 | for_each_possible_cpu(c) { | |
94 | preempt_disable(); | |
95 | /* save vn_active, it's a universal truth! */ | |
11ef38af | 96 | vn_active = per_cpu_ptr(stats, c)->s.vn_active; |
80529c45 | 97 | memset(per_cpu_ptr(stats, c), 0, sizeof(*stats)); |
11ef38af | 98 | per_cpu_ptr(stats, c)->s.vn_active = vn_active; |
bb230c12 BD |
99 | preempt_enable(); |
100 | } | |
101 | } | |
102 | ||
5ef03dbd | 103 | #ifdef CONFIG_PROC_FS |
48776fd2 CH |
104 | /* legacy quota interfaces */ |
105 | #ifdef CONFIG_XFS_QUOTA | |
26ca3901 CM |
106 | |
107 | #define XFSSTAT_START_XQMSTAT xfsstats_offset(xs_qm_dqreclaims) | |
108 | #define XFSSTAT_END_XQMSTAT xfsstats_offset(xs_qm_dquot) | |
109 | ||
48776fd2 CH |
110 | static int xqm_proc_show(struct seq_file *m, void *v) |
111 | { | |
112 | /* maximum; incore; ratio free to inuse; freelist */ | |
113 | seq_printf(m, "%d\t%d\t%d\t%u\n", | |
80529c45 BD |
114 | 0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT), |
115 | 0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT + 1)); | |
48776fd2 CH |
116 | return 0; |
117 | } | |
118 | ||
48776fd2 CH |
119 | /* legacy quota stats interface no 2 */ |
120 | static int xqmstat_proc_show(struct seq_file *m, void *v) | |
121 | { | |
122 | int j; | |
123 | ||
124 | seq_printf(m, "qm"); | |
26ca3901 | 125 | for (j = XFSSTAT_START_XQMSTAT; j < XFSSTAT_END_XQMSTAT; j++) |
80529c45 | 126 | seq_printf(m, " %u", counter_val(xfsstats.xs_stats, j)); |
48776fd2 CH |
127 | seq_putc(m, '\n'); |
128 | return 0; | |
129 | } | |
48776fd2 CH |
130 | #endif /* CONFIG_XFS_QUOTA */ |
131 | ||
9f8868ff | 132 | int |
1da177e4 LT |
133 | xfs_init_procfs(void) |
134 | { | |
135 | if (!proc_mkdir("fs/xfs", NULL)) | |
9e92054e | 136 | return -ENOMEM; |
9f8868ff | 137 | |
32f0ea05 BD |
138 | if (!proc_symlink("fs/xfs/stat", NULL, |
139 | "/sys/fs/xfs/stats/stats")) | |
9e92054e | 140 | goto out; |
32f0ea05 | 141 | |
48776fd2 | 142 | #ifdef CONFIG_XFS_QUOTA |
3f3942ac | 143 | if (!proc_create_single("fs/xfs/xqmstat", 0, NULL, xqmstat_proc_show)) |
9e92054e | 144 | goto out; |
3f3942ac | 145 | if (!proc_create_single("fs/xfs/xqm", 0, NULL, xqm_proc_show)) |
9e92054e | 146 | goto out; |
48776fd2 | 147 | #endif |
9f8868ff CH |
148 | return 0; |
149 | ||
9e92054e ES |
150 | out: |
151 | remove_proc_subtree("fs/xfs", NULL); | |
9f8868ff | 152 | return -ENOMEM; |
1da177e4 LT |
153 | } |
154 | ||
155 | void | |
156 | xfs_cleanup_procfs(void) | |
157 | { | |
9e92054e | 158 | remove_proc_subtree("fs/xfs", NULL); |
1da177e4 | 159 | } |
985ef4dc | 160 | #endif /* CONFIG_PROC_FS */ |