1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  *   Copyright (C) International Business Machines Corp., 2000-2002
4  *   Portions Copyright (C) Christoph Hellwig, 2001-2002
5  */
6 #ifndef _H_JFS_DEBUG
7 #define _H_JFS_DEBUG
8 
9 /*
10  *	jfs_debug.h
11  *
12  * global debug message, data structure/macro definitions
13  * under control of CONFIG_JFS_DEBUG, CONFIG_JFS_STATISTICS;
14  */
15 
16 /*
17  * Create /proc/fs/jfs if procfs is enabled andeither
18  * CONFIG_JFS_DEBUG or CONFIG_JFS_STATISTICS is defined
19  */
20 #if defined(CONFIG_PROC_FS) && (defined(CONFIG_JFS_DEBUG) || defined(CONFIG_JFS_STATISTICS))
21 #define PROC_FS_JFS
22 extern void jfs_proc_init(void);
23 extern void jfs_proc_clean(void);
24 #endif
25 
26 /*
27  *	assert with traditional printf/panic
28  */
29 #define assert(p) do {	\
30 	if (!(p)) {	\
31 		printk(KERN_CRIT "BUG at %s:%d assert(%s)\n",	\
32 		       __FILE__, __LINE__, #p);			\
33 		BUG();	\
34 	}		\
35 } while (0)
36 
37 /*
38  *	debug ON
39  *	--------
40  */
41 #ifdef CONFIG_JFS_DEBUG
42 #define ASSERT(p) assert(p)
43 
44 /* printk verbosity */
45 #define JFS_LOGLEVEL_ERR 1
46 #define JFS_LOGLEVEL_WARN 2
47 #define JFS_LOGLEVEL_DEBUG 3
48 #define JFS_LOGLEVEL_INFO 4
49 
50 extern int jfsloglevel;
51 
52 int jfs_txanchor_proc_show(struct seq_file *m, void *v);
53 
54 /* information message: e.g., configuration, major event */
55 #define jfs_info(fmt, arg...) do {			\
56 	if (jfsloglevel >= JFS_LOGLEVEL_INFO)		\
57 		printk(KERN_INFO fmt "\n", ## arg);	\
58 } while (0)
59 
60 /* debug message: ad hoc */
61 #define jfs_debug(fmt, arg...) do {			\
62 	if (jfsloglevel >= JFS_LOGLEVEL_DEBUG)		\
63 		printk(KERN_DEBUG fmt "\n", ## arg);	\
64 } while (0)
65 
66 /* warn message: */
67 #define jfs_warn(fmt, arg...) do {			\
68 	if (jfsloglevel >= JFS_LOGLEVEL_WARN)		\
69 		printk(KERN_WARNING fmt "\n", ## arg);	\
70 } while (0)
71 
72 /* error event message: e.g., i/o error */
73 #define jfs_err(fmt, arg...) do {			\
74 	if (jfsloglevel >= JFS_LOGLEVEL_ERR)		\
75 		printk(KERN_ERR fmt "\n", ## arg);	\
76 } while (0)
77 
78 /*
79  *	debug OFF
80  *	---------
81  */
82 #else				/* CONFIG_JFS_DEBUG */
83 #define ASSERT(p) do {} while (0)
84 #define jfs_info(fmt, arg...) do {} while (0)
85 #define jfs_debug(fmt, arg...) do {} while (0)
86 #define jfs_warn(fmt, arg...) do {} while (0)
87 #define jfs_err(fmt, arg...) do {} while (0)
88 #endif				/* CONFIG_JFS_DEBUG */
89 
90 /*
91  *	statistics
92  *	----------
93  */
94 #ifdef	CONFIG_JFS_STATISTICS
95 int jfs_lmstats_proc_show(struct seq_file *m, void *v);
96 int jfs_txstats_proc_show(struct seq_file *m, void *v);
97 int jfs_mpstat_proc_show(struct seq_file *m, void *v);
98 int jfs_xtstat_proc_show(struct seq_file *m, void *v);
99 
100 #define	INCREMENT(x)		((x)++)
101 #define	DECREMENT(x)		((x)--)
102 #define	HIGHWATERMARK(x,y)	((x) = max((x), (y)))
103 #else
104 #define	INCREMENT(x)
105 #define	DECREMENT(x)
106 #define	HIGHWATERMARK(x,y)
107 #endif				/* CONFIG_JFS_STATISTICS */
108 
109 #endif				/* _H_JFS_DEBUG */
110