xref: /openbmc/linux/fs/jfs/jfs_debug.h (revision d5cb9783536a41df9f9cba5b0a1d78047ed787f7)
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 #ifdef CONFIG_KERNEL_ASSERTS
43 /* kgdb stuff */
44 #define assert(p) KERNEL_ASSERT(#p, p)
45 #else
46 #define assert(p) do {	\
47 	if (!(p)) {	\
48 		printk(KERN_CRIT "BUG at %s:%d assert(%s)\n",	\
49 		       __FILE__, __LINE__, #p);			\
50 		BUG();	\
51 	}		\
52 } while (0)
53 #endif
54 
55 /*
56  *	debug ON
57  *	--------
58  */
59 #ifdef CONFIG_JFS_DEBUG
60 #define ASSERT(p) assert(p)
61 
62 /* printk verbosity */
63 #define JFS_LOGLEVEL_ERR 1
64 #define JFS_LOGLEVEL_WARN 2
65 #define JFS_LOGLEVEL_DEBUG 3
66 #define JFS_LOGLEVEL_INFO 4
67 
68 extern int jfsloglevel;
69 
70 extern void dump_mem(char *label, void *data, int length);
71 extern int jfs_txanchor_read(char *, char **, off_t, int, int *, void *);
72 
73 /* information message: e.g., configuration, major event */
74 #define jfs_info(fmt, arg...) do {			\
75 	if (jfsloglevel >= JFS_LOGLEVEL_INFO)		\
76 		printk(KERN_INFO fmt "\n", ## arg);	\
77 } while (0)
78 
79 /* debug message: ad hoc */
80 #define jfs_debug(fmt, arg...) do {			\
81 	if (jfsloglevel >= JFS_LOGLEVEL_DEBUG)		\
82 		printk(KERN_DEBUG fmt "\n", ## arg);	\
83 } while (0)
84 
85 /* warn message: */
86 #define jfs_warn(fmt, arg...) do {			\
87 	if (jfsloglevel >= JFS_LOGLEVEL_WARN)		\
88 		printk(KERN_WARNING fmt "\n", ## arg);	\
89 } while (0)
90 
91 /* error event message: e.g., i/o error */
92 #define jfs_err(fmt, arg...) do {			\
93 	if (jfsloglevel >= JFS_LOGLEVEL_ERR)		\
94 		printk(KERN_ERR fmt "\n", ## arg);	\
95 } while (0)
96 
97 /*
98  *	debug OFF
99  *	---------
100  */
101 #else				/* CONFIG_JFS_DEBUG */
102 #define dump_mem(label,data,length) do {} while (0)
103 #define ASSERT(p) do {} while (0)
104 #define jfs_info(fmt, arg...) do {} while (0)
105 #define jfs_debug(fmt, arg...) do {} while (0)
106 #define jfs_warn(fmt, arg...) do {} while (0)
107 #define jfs_err(fmt, arg...) do {} while (0)
108 #endif				/* CONFIG_JFS_DEBUG */
109 
110 /*
111  *	statistics
112  *	----------
113  */
114 #ifdef	CONFIG_JFS_STATISTICS
115 extern int jfs_lmstats_read(char *, char **, off_t, int, int *, void *);
116 extern int jfs_txstats_read(char *, char **, off_t, int, int *, void *);
117 extern int jfs_mpstat_read(char *, char **, off_t, int, int *, void *);
118 extern int jfs_xtstat_read(char *, char **, off_t, int, int *, void *);
119 
120 #define	INCREMENT(x)		((x)++)
121 #define	DECREMENT(x)		((x)--)
122 #define	HIGHWATERMARK(x,y)	((x) = max((x), (y)))
123 #else
124 #define	INCREMENT(x)
125 #define	DECREMENT(x)
126 #define	HIGHWATERMARK(x,y)
127 #endif				/* CONFIG_JFS_STATISTICS */
128 
129 #endif				/* _H_JFS_DEBUG */
130