tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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
7 * published by the Free Software Foundation.
8 *
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.
13 *
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
17 */
18#include "xfs.h"
19#include <linux/proc_fs.h>
20
21DEFINE_PER_CPU(struct xfsstats, xfsstats);
22
23static int counter_val(int idx)
24{
25 int val = 0, cpu;
26
27 for_each_possible_cpu(cpu)
28 val += *(((__u32 *)&per_cpu(xfsstats, cpu) + idx));
29 return val;
30}
31
32static int xfs_stat_proc_show(struct seq_file *m, void *v)
33{
34 int i, j;
35 __uint64_t xs_xstrat_bytes = 0;
36 __uint64_t xs_write_bytes = 0;
37 __uint64_t xs_read_bytes = 0;
38
39 static const struct xstats_entry {
40 char *desc;
41 int endpoint;
42 } xstats[] = {
43 { "extent_alloc", XFSSTAT_END_EXTENT_ALLOC },
44 { "abt", XFSSTAT_END_ALLOC_BTREE },
45 { "blk_map", XFSSTAT_END_BLOCK_MAPPING },
46 { "bmbt", XFSSTAT_END_BLOCK_MAP_BTREE },
47 { "dir", XFSSTAT_END_DIRECTORY_OPS },
48 { "trans", XFSSTAT_END_TRANSACTIONS },
49 { "ig", XFSSTAT_END_INODE_OPS },
50 { "log", XFSSTAT_END_LOG_OPS },
51 { "push_ail", XFSSTAT_END_TAIL_PUSHING },
52 { "xstrat", XFSSTAT_END_WRITE_CONVERT },
53 { "rw", XFSSTAT_END_READ_WRITE_OPS },
54 { "attr", XFSSTAT_END_ATTRIBUTE_OPS },
55 { "icluster", XFSSTAT_END_INODE_CLUSTER },
56 { "vnodes", XFSSTAT_END_VNODE_OPS },
57 { "buf", XFSSTAT_END_BUF },
58 { "abtb2", XFSSTAT_END_ABTB_V2 },
59 { "abtc2", XFSSTAT_END_ABTC_V2 },
60 { "bmbt2", XFSSTAT_END_BMBT_V2 },
61 { "ibt2", XFSSTAT_END_IBT_V2 },
62 /* we print both series of quota information together */
63 { "qm", XFSSTAT_END_QM },
64 };
65
66 /* Loop over all stats groups */
67 for (i = j = 0; i < ARRAY_SIZE(xstats); i++) {
68 seq_printf(m, "%s", xstats[i].desc);
69 /* inner loop does each group */
70 for (; j < xstats[i].endpoint; j++)
71 seq_printf(m, " %u", counter_val(j));
72 seq_putc(m, '\n');
73 }
74 /* extra precision counters */
75 for_each_possible_cpu(i) {
76 xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes;
77 xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes;
78 xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes;
79 }
80
81 seq_printf(m, "xpc %Lu %Lu %Lu\n",
82 xs_xstrat_bytes, xs_write_bytes, xs_read_bytes);
83 seq_printf(m, "debug %u\n",
84#if defined(DEBUG)
85 1);
86#else
87 0);
88#endif
89 return 0;
90}
91
92static int xfs_stat_proc_open(struct inode *inode, struct file *file)
93{
94 return single_open(file, xfs_stat_proc_show, NULL);
95}
96
97static const struct file_operations xfs_stat_proc_fops = {
98 .owner = THIS_MODULE,
99 .open = xfs_stat_proc_open,
100 .read = seq_read,
101 .llseek = seq_lseek,
102 .release = single_release,
103};
104
105/* legacy quota interfaces */
106#ifdef CONFIG_XFS_QUOTA
107static int xqm_proc_show(struct seq_file *m, void *v)
108{
109 /* maximum; incore; ratio free to inuse; freelist */
110 seq_printf(m, "%d\t%d\t%d\t%u\n",
111 0,
112 counter_val(XFSSTAT_END_XQMSTAT),
113 0,
114 counter_val(XFSSTAT_END_XQMSTAT + 1));
115 return 0;
116}
117
118static int xqm_proc_open(struct inode *inode, struct file *file)
119{
120 return single_open(file, xqm_proc_show, NULL);
121}
122
123static const struct file_operations xqm_proc_fops = {
124 .owner = THIS_MODULE,
125 .open = xqm_proc_open,
126 .read = seq_read,
127 .llseek = seq_lseek,
128 .release = single_release,
129};
130
131/* legacy quota stats interface no 2 */
132static int xqmstat_proc_show(struct seq_file *m, void *v)
133{
134 int j;
135
136 seq_printf(m, "qm");
137 for (j = XFSSTAT_END_IBT_V2; j < XFSSTAT_END_XQMSTAT; j++)
138 seq_printf(m, " %u", counter_val(j));
139 seq_putc(m, '\n');
140 return 0;
141}
142
143static int xqmstat_proc_open(struct inode *inode, struct file *file)
144{
145 return single_open(file, xqmstat_proc_show, NULL);
146}
147
148static const struct file_operations xqmstat_proc_fops = {
149 .owner = THIS_MODULE,
150 .open = xqmstat_proc_open,
151 .read = seq_read,
152 .llseek = seq_lseek,
153 .release = single_release,
154};
155#endif /* CONFIG_XFS_QUOTA */
156
157int
158xfs_init_procfs(void)
159{
160 if (!proc_mkdir("fs/xfs", NULL))
161 goto out;
162
163 if (!proc_create("fs/xfs/stat", 0, NULL,
164 &xfs_stat_proc_fops))
165 goto out_remove_xfs_dir;
166#ifdef CONFIG_XFS_QUOTA
167 if (!proc_create("fs/xfs/xqmstat", 0, NULL,
168 &xqmstat_proc_fops))
169 goto out_remove_stat_file;
170 if (!proc_create("fs/xfs/xqm", 0, NULL,
171 &xqm_proc_fops))
172 goto out_remove_xqmstat_file;
173#endif
174 return 0;
175
176#ifdef CONFIG_XFS_QUOTA
177 out_remove_xqmstat_file:
178 remove_proc_entry("fs/xfs/xqmstat", NULL);
179 out_remove_stat_file:
180 remove_proc_entry("fs/xfs/stat", NULL);
181#endif
182 out_remove_xfs_dir:
183 remove_proc_entry("fs/xfs", NULL);
184 out:
185 return -ENOMEM;
186}
187
188void
189xfs_cleanup_procfs(void)
190{
191#ifdef CONFIG_XFS_QUOTA
192 remove_proc_entry("fs/xfs/xqm", NULL);
193 remove_proc_entry("fs/xfs/xqmstat", NULL);
194#endif
195 remove_proc_entry("fs/xfs/stat", NULL);
196 remove_proc_entry("fs/xfs", NULL);
197}