jfs_debug.h

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    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 */

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FreeBSD/Linux Kernel Cross Reference sys/fs/jfs/jfs_debug.h

FreeBSD/Linux Kernel Cross Reference
sys/fs/jfs/jfs_debug.h