Root/fs/jfs/jfs_debug.h

1/*
2 * Copyright (C) International Business Machines Corp., 2000-2002
3 * Portions Copyright (C) Christoph Hellwig, 2001-2002
4 *
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.
9 *
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.
14 *
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
18 */
19#ifndef _H_JFS_DEBUG
20#define _H_JFS_DEBUG
21
22/*
23 * jfs_debug.h
24 *
25 * global debug message, data structure/macro definitions
26 * under control of CONFIG_JFS_DEBUG, CONFIG_JFS_STATISTICS;
27 */
28
29/*
30 * Create /proc/fs/jfs if procfs is enabled andeither
31 * CONFIG_JFS_DEBUG or CONFIG_JFS_STATISTICS is defined
32 */
33#if defined(CONFIG_PROC_FS) && (defined(CONFIG_JFS_DEBUG) || defined(CONFIG_JFS_STATISTICS))
34#define PROC_FS_JFS
35extern void jfs_proc_init(void);
36extern void jfs_proc_clean(void);
37#endif
38
39/*
40 * assert with traditional printf/panic
41 */
42#define assert(p) do { \
43    if (!(p)) { \
44        printk(KERN_CRIT "BUG at %s:%d assert(%s)\n", \
45               __FILE__, __LINE__, #p); \
46        BUG(); \
47    } \
48} while (0)
49
50/*
51 * debug ON
52 * --------
53 */
54#ifdef CONFIG_JFS_DEBUG
55#define ASSERT(p) assert(p)
56
57/* printk verbosity */
58#define JFS_LOGLEVEL_ERR 1
59#define JFS_LOGLEVEL_WARN 2
60#define JFS_LOGLEVEL_DEBUG 3
61#define JFS_LOGLEVEL_INFO 4
62
63extern int jfsloglevel;
64
65extern const struct file_operations jfs_txanchor_proc_fops;
66
67/* information message: e.g., configuration, major event */
68#define jfs_info(fmt, arg...) do { \
69    if (jfsloglevel >= JFS_LOGLEVEL_INFO) \
70        printk(KERN_INFO fmt "\n", ## arg); \
71} while (0)
72
73/* debug message: ad hoc */
74#define jfs_debug(fmt, arg...) do { \
75    if (jfsloglevel >= JFS_LOGLEVEL_DEBUG) \
76        printk(KERN_DEBUG fmt "\n", ## arg); \
77} while (0)
78
79/* warn message: */
80#define jfs_warn(fmt, arg...) do { \
81    if (jfsloglevel >= JFS_LOGLEVEL_WARN) \
82        printk(KERN_WARNING fmt "\n", ## arg); \
83} while (0)
84
85/* error event message: e.g., i/o error */
86#define jfs_err(fmt, arg...) do { \
87    if (jfsloglevel >= JFS_LOGLEVEL_ERR) \
88        printk(KERN_ERR fmt "\n", ## arg); \
89} while (0)
90
91/*
92 * debug OFF
93 * ---------
94 */
95#else /* CONFIG_JFS_DEBUG */
96#define ASSERT(p) do {} while (0)
97#define jfs_info(fmt, arg...) do {} while (0)
98#define jfs_debug(fmt, arg...) do {} while (0)
99#define jfs_warn(fmt, arg...) do {} while (0)
100#define jfs_err(fmt, arg...) do {} while (0)
101#endif /* CONFIG_JFS_DEBUG */
102
103/*
104 * statistics
105 * ----------
106 */
107#ifdef CONFIG_JFS_STATISTICS
108extern const struct file_operations jfs_lmstats_proc_fops;
109extern const struct file_operations jfs_txstats_proc_fops;
110extern const struct file_operations jfs_mpstat_proc_fops;
111extern const struct file_operations jfs_xtstat_proc_fops;
112
113#define INCREMENT(x) ((x)++)
114#define DECREMENT(x) ((x)--)
115#define HIGHWATERMARK(x,y) ((x) = max((x), (y)))
116#else
117#define INCREMENT(x)
118#define DECREMENT(x)
119#define HIGHWATERMARK(x,y)
120#endif /* CONFIG_JFS_STATISTICS */
121
122#endif /* _H_JFS_DEBUG */
123

Archive Download this file



interactive