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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include <linux/proc_fs.h> | |
20 | ||
21 | DEFINE_PER_CPU(struct xfsstats, xfsstats); | |
22 | ||
23 | STATIC int | |
24 | xfs_read_xfsstats( | |
25 | char *buffer, | |
26 | char **start, | |
27 | off_t offset, | |
28 | int count, | |
29 | int *eof, | |
30 | void *data) | |
31 | { | |
32 | int c, i, j, len, val; | |
33 | __uint64_t xs_xstrat_bytes = 0; | |
34 | __uint64_t xs_write_bytes = 0; | |
35 | __uint64_t xs_read_bytes = 0; | |
36 | ||
1df84c93 | 37 | static const struct xstats_entry { |
1da177e4 LT |
38 | char *desc; |
39 | int endpoint; | |
40 | } xstats[] = { | |
41 | { "extent_alloc", XFSSTAT_END_EXTENT_ALLOC }, | |
42 | { "abt", XFSSTAT_END_ALLOC_BTREE }, | |
43 | { "blk_map", XFSSTAT_END_BLOCK_MAPPING }, | |
44 | { "bmbt", XFSSTAT_END_BLOCK_MAP_BTREE }, | |
45 | { "dir", XFSSTAT_END_DIRECTORY_OPS }, | |
46 | { "trans", XFSSTAT_END_TRANSACTIONS }, | |
47 | { "ig", XFSSTAT_END_INODE_OPS }, | |
48 | { "log", XFSSTAT_END_LOG_OPS }, | |
49 | { "push_ail", XFSSTAT_END_TAIL_PUSHING }, | |
50 | { "xstrat", XFSSTAT_END_WRITE_CONVERT }, | |
51 | { "rw", XFSSTAT_END_READ_WRITE_OPS }, | |
52 | { "attr", XFSSTAT_END_ATTRIBUTE_OPS }, | |
53 | { "icluster", XFSSTAT_END_INODE_CLUSTER }, | |
54 | { "vnodes", XFSSTAT_END_VNODE_OPS }, | |
55 | { "buf", XFSSTAT_END_BUF }, | |
56 | }; | |
57 | ||
58 | /* Loop over all stats groups */ | |
e8c96f8c | 59 | for (i=j=len = 0; i < ARRAY_SIZE(xstats); i++) { |
1da177e4 LT |
60 | len += sprintf(buffer + len, xstats[i].desc); |
61 | /* inner loop does each group */ | |
62 | while (j < xstats[i].endpoint) { | |
63 | val = 0; | |
64 | /* sum over all cpus */ | |
394e3902 | 65 | for_each_cpu(c) |
1da177e4 | 66 | val += *(((__u32*)&per_cpu(xfsstats, c) + j)); |
1da177e4 LT |
67 | len += sprintf(buffer + len, " %u", val); |
68 | j++; | |
69 | } | |
70 | buffer[len++] = '\n'; | |
71 | } | |
72 | /* extra precision counters */ | |
394e3902 | 73 | for_each_cpu(i) { |
1da177e4 LT |
74 | xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes; |
75 | xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes; | |
76 | xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes; | |
77 | } | |
78 | ||
79 | len += sprintf(buffer + len, "xpc %Lu %Lu %Lu\n", | |
80 | xs_xstrat_bytes, xs_write_bytes, xs_read_bytes); | |
81 | len += sprintf(buffer + len, "debug %u\n", | |
82 | #if defined(DEBUG) | |
83 | 1); | |
84 | #else | |
85 | 0); | |
86 | #endif | |
87 | ||
88 | if (offset >= len) { | |
89 | *start = buffer; | |
90 | *eof = 1; | |
91 | return 0; | |
92 | } | |
93 | *start = buffer + offset; | |
94 | if ((len -= offset) > count) | |
95 | return count; | |
96 | *eof = 1; | |
97 | ||
98 | return len; | |
99 | } | |
100 | ||
101 | void | |
102 | xfs_init_procfs(void) | |
103 | { | |
104 | if (!proc_mkdir("fs/xfs", NULL)) | |
105 | return; | |
106 | create_proc_read_entry("fs/xfs/stat", 0, NULL, xfs_read_xfsstats, NULL); | |
107 | } | |
108 | ||
109 | void | |
110 | xfs_cleanup_procfs(void) | |
111 | { | |
112 | remove_proc_entry("fs/xfs/stat", NULL); | |
113 | remove_proc_entry("fs/xfs", NULL); | |
114 | } |