module: add MODULE_STATE_LIVE notify
[linux-2.6/mini2440.git] / fs / jfs / jfs_debug.c
blob6a73de84bcef142350ad60f3b3fefe2b172de043
1 /*
2 * Copyright (C) International Business Machines Corp., 2000-2004
3 * Portions Copyright (C) Christoph Hellwig, 2001-2002
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #include <linux/fs.h>
21 #include <linux/ctype.h>
22 #include <linux/module.h>
23 #include <linux/proc_fs.h>
24 #include <linux/seq_file.h>
25 #include <asm/uaccess.h>
26 #include "jfs_incore.h"
27 #include "jfs_filsys.h"
28 #include "jfs_debug.h"
30 #ifdef PROC_FS_JFS /* see jfs_debug.h */
32 static struct proc_dir_entry *base;
33 #ifdef CONFIG_JFS_DEBUG
34 static int jfs_loglevel_proc_show(struct seq_file *m, void *v)
36 seq_printf(m, "%d\n", jfsloglevel);
37 return 0;
40 static int jfs_loglevel_proc_open(struct inode *inode, struct file *file)
42 return single_open(file, jfs_loglevel_proc_show, NULL);
45 static ssize_t jfs_loglevel_proc_write(struct file *file,
46 const char __user *buffer, size_t count, loff_t *ppos)
48 char c;
50 if (get_user(c, buffer))
51 return -EFAULT;
53 /* yes, I know this is an ASCIIism. --hch */
54 if (c < '0' || c > '9')
55 return -EINVAL;
56 jfsloglevel = c - '0';
57 return count;
60 static const struct file_operations jfs_loglevel_proc_fops = {
61 .owner = THIS_MODULE,
62 .open = jfs_loglevel_proc_open,
63 .read = seq_read,
64 .llseek = seq_lseek,
65 .release = single_release,
66 .write = jfs_loglevel_proc_write,
68 #endif
70 static struct {
71 const char *name;
72 const struct file_operations *proc_fops;
73 } Entries[] = {
74 #ifdef CONFIG_JFS_STATISTICS
75 { "lmstats", &jfs_lmstats_proc_fops, },
76 { "txstats", &jfs_txstats_proc_fops, },
77 { "xtstat", &jfs_xtstat_proc_fops, },
78 { "mpstat", &jfs_mpstat_proc_fops, },
79 #endif
80 #ifdef CONFIG_JFS_DEBUG
81 { "TxAnchor", &jfs_txanchor_proc_fops, },
82 { "loglevel", &jfs_loglevel_proc_fops }
83 #endif
85 #define NPROCENT ARRAY_SIZE(Entries)
87 void jfs_proc_init(void)
89 int i;
91 if (!(base = proc_mkdir("fs/jfs", NULL)))
92 return;
93 base->owner = THIS_MODULE;
95 for (i = 0; i < NPROCENT; i++)
96 proc_create(Entries[i].name, 0, base, Entries[i].proc_fops);
99 void jfs_proc_clean(void)
101 int i;
103 if (base) {
104 for (i = 0; i < NPROCENT; i++)
105 remove_proc_entry(Entries[i].name, base);
106 remove_proc_entry("fs/jfs", NULL);
110 #endif /* PROC_FS_JFS */