linux/fs/jfs/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
  35extern void jfs_proc_init(void);
  36extern 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
  63extern int jfsloglevel;
  64
  65extern const struct file_operations jfs_txanchor_proc_fops;
  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
 108extern const struct file_operations jfs_lmstats_proc_fops;
 109extern const struct file_operations jfs_txstats_proc_fops;
 110extern const struct file_operations jfs_mpstat_proc_fops;
 111extern const struct file_operations jfs_xtstat_proc_fops;
 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 */
 123
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