fs/jfs/jfs_debug.h

   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 int jfs_txanchor_read(char *, char **, off_t, int, int *, void *);
  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 extern int jfs_lmstats_read(char *, char **, off_t, int, int *, void *);
 109 extern int jfs_txstats_read(char *, char **, off_t, int, int *, void *);
 110 extern int jfs_mpstat_read(char *, char **, off_t, int, int *, void *);
 111 extern int jfs_xtstat_read(char *, char **, off_t, int, int *, void *);
 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 */