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
35 extern void jfs_proc_init(void);
36 extern 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 
63 extern int jfsloglevel;
64 
65 int jfs_txanchor_proc_show(struct seq_file *m, void *v);
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
108 int jfs_lmstats_proc_show(struct seq_file *m, void *v);
109 int jfs_txstats_proc_show(struct seq_file *m, void *v);
110 int jfs_mpstat_proc_show(struct seq_file *m, void *v);
111 int jfs_xtstat_proc_show(struct seq_file *m, void *v);
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