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 #endif
  36
  37 /*
  38  *      assert with traditional printf/panic
  39  */
  40 #ifdef CONFIG_KERNEL_ASSERTS
  41 /* kgdb stuff */
  42 #define assert(p) KERNEL_ASSERT(#p, p)
  43 #else
  44 #define assert(p) do {  \
  45         if (!(p)) {     \
  46                 printk(KERN_CRIT "BUG at %s:%d assert(%s)\n",   \
  47                        __FILE__, __LINE__, #p);                 \
  48                 BUG();  \
  49         }               \
  50 } while (0)
  51 #endif
  52
  53 /*
  54  *      debug ON
  55  *      --------
  56  */
  57 #ifdef CONFIG_JFS_DEBUG
  58 #define ASSERT(p) assert(p)
  59
  60 /* printk verbosity */
  61 #define JFS_LOGLEVEL_ERR 1
  62 #define JFS_LOGLEVEL_WARN 2
  63 #define JFS_LOGLEVEL_DEBUG 3
  64 #define JFS_LOGLEVEL_INFO 4
  65
  66 extern int jfsloglevel;
  67
  68 /* dump memory contents */
  69 extern void dump_mem(char *label, void *data, int length);
  70
  71 /* information message: e.g., configuration, major event */
  72 #define jfs_info(fmt, arg...) do {                      \
  73         if (jfsloglevel >= JFS_LOGLEVEL_INFO)           \
  74                 printk(KERN_INFO fmt "\n", ## arg);     \
  75 } while (0)
  76
  77 /* debug message: ad hoc */
  78 #define jfs_debug(fmt, arg...) do {                     \
  79         if (jfsloglevel >= JFS_LOGLEVEL_DEBUG)          \
  80                 printk(KERN_DEBUG fmt "\n", ## arg);    \
  81 } while (0)
  82
  83 /* warn message: */
  84 #define jfs_warn(fmt, arg...) do {                      \
  85         if (jfsloglevel >= JFS_LOGLEVEL_WARN)           \
  86                 printk(KERN_WARNING fmt "\n", ## arg);  \
  87 } while (0)
  88
  89 /* error event message: e.g., i/o error */
  90 #define jfs_err(fmt, arg...) do {                       \
  91         if (jfsloglevel >= JFS_LOGLEVEL_ERR)            \
  92                 printk(KERN_ERR fmt "\n", ## arg);      \
  93 } while (0)
  94
  95 /*
  96  *      debug OFF
  97  *      ---------
  98  */
  99 #else                           /* CONFIG_JFS_DEBUG */
 100 #define dump_mem(label,data,length) do {} while (0)
 101 #define ASSERT(p) do {} while (0)
 102 #define jfs_info(fmt, arg...) do {} while (0)
 103 #define jfs_debug(fmt, arg...) do {} while (0)
 104 #define jfs_warn(fmt, arg...) do {} while (0)
 105 #define jfs_err(fmt, arg...) do {} while (0)
 106 #endif                          /* CONFIG_JFS_DEBUG */
 107
 108 /*
 109  *      statistics
 110  *      ----------
 111  */
 112 #ifdef  CONFIG_JFS_STATISTICS
 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 */