xref: /openbmc/linux/fs/jfs/jfs_debug.h (revision e868d61272caa648214046a096e5a6bfc068dc8c)
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 extern void dump_mem(char *label, void *data, int length);
66 extern int jfs_txanchor_read(char *, char **, off_t, int, int *, void *);
67 
68 /* information message: e.g., configuration, major event */
69 #define jfs_info(fmt, arg...) do {			\
70 	if (jfsloglevel >= JFS_LOGLEVEL_INFO)		\
71 		printk(KERN_INFO fmt "\n", ## arg);	\
72 } while (0)
73 
74 /* debug message: ad hoc */
75 #define jfs_debug(fmt, arg...) do {			\
76 	if (jfsloglevel >= JFS_LOGLEVEL_DEBUG)		\
77 		printk(KERN_DEBUG fmt "\n", ## arg);	\
78 } while (0)
79 
80 /* warn message: */
81 #define jfs_warn(fmt, arg...) do {			\
82 	if (jfsloglevel >= JFS_LOGLEVEL_WARN)		\
83 		printk(KERN_WARNING fmt "\n", ## arg);	\
84 } while (0)
85 
86 /* error event message: e.g., i/o error */
87 #define jfs_err(fmt, arg...) do {			\
88 	if (jfsloglevel >= JFS_LOGLEVEL_ERR)		\
89 		printk(KERN_ERR fmt "\n", ## arg);	\
90 } while (0)
91 
92 /*
93  *	debug OFF
94  *	---------
95  */
96 #else				/* CONFIG_JFS_DEBUG */
97 #define dump_mem(label,data,length) do {} while (0)
98 #define ASSERT(p) do {} while (0)
99 #define jfs_info(fmt, arg...) do {} while (0)
100 #define jfs_debug(fmt, arg...) do {} while (0)
101 #define jfs_warn(fmt, arg...) do {} while (0)
102 #define jfs_err(fmt, arg...) do {} while (0)
103 #endif				/* CONFIG_JFS_DEBUG */
104 
105 /*
106  *	statistics
107  *	----------
108  */
109 #ifdef	CONFIG_JFS_STATISTICS
110 extern int jfs_lmstats_read(char *, char **, off_t, int, int *, void *);
111 extern int jfs_txstats_read(char *, char **, off_t, int, int *, void *);
112 extern int jfs_mpstat_read(char *, char **, off_t, int, int *, void *);
113 extern int jfs_xtstat_read(char *, char **, off_t, int, int *, void *);
114 
115 #define	INCREMENT(x)		((x)++)
116 #define	DECREMENT(x)		((x)--)
117 #define	HIGHWATERMARK(x,y)	((x) = max((x), (y)))
118 #else
119 #define	INCREMENT(x)
120 #define	DECREMENT(x)
121 #define	HIGHWATERMARK(x,y)
122 #endif				/* CONFIG_JFS_STATISTICS */
123 
124 #endif				/* _H_JFS_DEBUG */
125