/*

   *   Copyright (C) International Business Machines Corp., 2000-2002
   *   Portions Copyright (C) Christoph Hellwig, 2001-2002

   *
   *   This program is free software;  you can redistribute it and/or modify
   *   it under the terms of the GNU General Public License as published by
   *   the Free Software Foundation; either version 2 of the License, or
   *   (at your option) any later version.
   *
   *   This program is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
   *   the GNU General Public License for more details.
   *
   *   You should have received a copy of the GNU General Public License
   *   along with this program;  if not, write to the Free Software
   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
   */
  #ifndef _H_JFS_DEBUG
  #define _H_JFS_DEBUG
  
  /*
   *	jfs_debug.h
   *
   * global debug message, data structure/macro definitions
   * under control of CONFIG_JFS_DEBUG, CONFIG_JFS_STATISTICS;
   */
  
  /*
   * Create /proc/fs/jfs if procfs is enabled andeither
   * CONFIG_JFS_DEBUG or CONFIG_JFS_STATISTICS is defined
   */
  #if defined(CONFIG_PROC_FS) && (defined(CONFIG_JFS_DEBUG) || defined(CONFIG_JFS_STATISTICS))

  #define PROC_FS_JFS
  extern void jfs_proc_init(void);
  extern void jfs_proc_clean(void);

  #endif
  
  /*
   *	assert with traditional printf/panic
   */

  #define assert(p) do {	\
  	if (!(p)) {	\
  		printk(KERN_CRIT "BUG at %s:%d assert(%s)
  ",	\
  		       __FILE__, __LINE__, #p);			\
  		BUG();	\
  	}		\
  } while (0)

  
  /*
   *	debug ON
   *	--------
   */
  #ifdef CONFIG_JFS_DEBUG
  #define ASSERT(p) assert(p)
  
  /* printk verbosity */
  #define JFS_LOGLEVEL_ERR 1
  #define JFS_LOGLEVEL_WARN 2
  #define JFS_LOGLEVEL_DEBUG 3
  #define JFS_LOGLEVEL_INFO 4
  
  extern int jfsloglevel;

  extern const struct file_operations jfs_txanchor_proc_fops;

  
  /* information message: e.g., configuration, major event */
  #define jfs_info(fmt, arg...) do {			\
  	if (jfsloglevel >= JFS_LOGLEVEL_INFO)		\
  		printk(KERN_INFO fmt "
  ", ## arg);	\
  } while (0)
  
  /* debug message: ad hoc */
  #define jfs_debug(fmt, arg...) do {			\
  	if (jfsloglevel >= JFS_LOGLEVEL_DEBUG)		\
  		printk(KERN_DEBUG fmt "
  ", ## arg);	\
  } while (0)
  
  /* warn message: */
  #define jfs_warn(fmt, arg...) do {			\
  	if (jfsloglevel >= JFS_LOGLEVEL_WARN)		\
  		printk(KERN_WARNING fmt "
  ", ## arg);	\
  } while (0)
  
  /* error event message: e.g., i/o error */
  #define jfs_err(fmt, arg...) do {			\
  	if (jfsloglevel >= JFS_LOGLEVEL_ERR)		\
  		printk(KERN_ERR fmt "
  ", ## arg);	\
  } while (0)
  
  /*
   *	debug OFF
   *	---------
   */
  #else				/* CONFIG_JFS_DEBUG */

  #define ASSERT(p) do {} while (0)
  #define jfs_info(fmt, arg...) do {} while (0)
  #define jfs_debug(fmt, arg...) do {} while (0)
  #define jfs_warn(fmt, arg...) do {} while (0)
  #define jfs_err(fmt, arg...) do {} while (0)
  #endif				/* CONFIG_JFS_DEBUG */
  
  /*
   *	statistics
   *	----------
   */
  #ifdef	CONFIG_JFS_STATISTICS

  extern const struct file_operations jfs_lmstats_proc_fops;
  extern const struct file_operations jfs_txstats_proc_fops;
  extern const struct file_operations jfs_mpstat_proc_fops;
  extern const struct file_operations jfs_xtstat_proc_fops;

  #define	INCREMENT(x)		((x)++)
  #define	DECREMENT(x)		((x)--)
  #define	HIGHWATERMARK(x,y)	((x) = max((x), (y)))
  #else
  #define	INCREMENT(x)
  #define	DECREMENT(x)
  #define	HIGHWATERMARK(x,y)
  #endif				/* CONFIG_JFS_STATISTICS */
  
  #endif				/* _H_JFS_DEBUG */