fs/jfs/jfs_debug.h

   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 */