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kernel/linux-imx6_3.14.28/fs/jffs2/debug.h 7.92 KB
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  /*
   * JFFS2 -- Journalling Flash File System, Version 2.
   *
   * Copyright © 2001-2007 Red Hat, Inc.
   * Copyright © 2004-2010 David Woodhouse <dwmw2@infradead.org>
   *
   * Created by David Woodhouse <dwmw2@infradead.org>
   *
   * For licensing information, see the file 'LICENCE' in this directory.
   *
   */
  
  #ifndef _JFFS2_DEBUG_H_
  #define _JFFS2_DEBUG_H_
  
  #include <linux/sched.h>
  
  #ifndef CONFIG_JFFS2_FS_DEBUG
  #define CONFIG_JFFS2_FS_DEBUG 0
  #endif
  
  #if CONFIG_JFFS2_FS_DEBUG > 0
  /* Enable "paranoia" checks and dumps */
  #define JFFS2_DBG_PARANOIA_CHECKS
  #define JFFS2_DBG_DUMPS
  
  /*
   * By defining/undefining the below macros one may select debugging messages
   * fro specific JFFS2 subsystems.
   */
  #define JFFS2_DBG_READINODE_MESSAGES
  #define JFFS2_DBG_FRAGTREE_MESSAGES
  #define JFFS2_DBG_DENTLIST_MESSAGES
  #define JFFS2_DBG_NODEREF_MESSAGES
  #define JFFS2_DBG_INOCACHE_MESSAGES
  #define JFFS2_DBG_SUMMARY_MESSAGES
  #define JFFS2_DBG_FSBUILD_MESSAGES
  #endif
  
  #if CONFIG_JFFS2_FS_DEBUG > 1
  #define JFFS2_DBG_FRAGTREE2_MESSAGES
  #define JFFS2_DBG_READINODE2_MESSAGES
  #define JFFS2_DBG_MEMALLOC_MESSAGES
  #endif
  
  /* Sanity checks are supposed to be light-weight and enabled by default */
  #define JFFS2_DBG_SANITY_CHECKS
  
  /*
   * Dx() are mainly used for debugging messages, they must go away and be
   * superseded by nicer dbg_xxx() macros...
   */
  #if CONFIG_JFFS2_FS_DEBUG > 0
  #define DEBUG
  #define D1(x) x
  #else
  #define D1(x)
  #endif
  
  #if CONFIG_JFFS2_FS_DEBUG > 1
  #define D2(x) x
  #else
  #define D2(x)
  #endif
  
  #define jffs2_dbg(level, fmt, ...)		\
  do {						\
  	if (CONFIG_JFFS2_FS_DEBUG >= level)	\
  		pr_debug(fmt, ##__VA_ARGS__);	\
  } while (0)
  
  /* The prefixes of JFFS2 messages */
  #define JFFS2_DBG		KERN_DEBUG
  #define JFFS2_DBG_PREFIX	"[JFFS2 DBG]"
  #define JFFS2_DBG_MSG_PREFIX	JFFS2_DBG JFFS2_DBG_PREFIX
  
  /* JFFS2 message macros */
  #define JFFS2_ERROR(fmt, ...)					\
  	pr_err("error: (%d) %s: " fmt,				\
  	       task_pid_nr(current), __func__, ##__VA_ARGS__)
  
  #define JFFS2_WARNING(fmt, ...)						\
  	pr_warn("warning: (%d) %s: " fmt,				\
  		task_pid_nr(current), __func__, ##__VA_ARGS__)
  
  #define JFFS2_NOTICE(fmt, ...)						\
  	pr_notice("notice: (%d) %s: " fmt,				\
  		  task_pid_nr(current), __func__, ##__VA_ARGS__)
  
  #define JFFS2_DEBUG(fmt, ...)						\
  	printk(KERN_DEBUG "[JFFS2 DBG] (%d) %s: " fmt,			\
  	       task_pid_nr(current), __func__, ##__VA_ARGS__)
  
  /*
   * We split our debugging messages on several parts, depending on the JFFS2
   * subsystem the message belongs to.
   */
  /* Read inode debugging messages */
  #ifdef JFFS2_DBG_READINODE_MESSAGES
  #define dbg_readinode(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)
  #else
  #define dbg_readinode(fmt, ...)
  #endif
  #ifdef JFFS2_DBG_READINODE2_MESSAGES
  #define dbg_readinode2(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)
  #else
  #define dbg_readinode2(fmt, ...)
  #endif
  
  /* Fragtree build debugging messages */
  #ifdef JFFS2_DBG_FRAGTREE_MESSAGES
  #define dbg_fragtree(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)
  #else
  #define dbg_fragtree(fmt, ...)
  #endif
  #ifdef JFFS2_DBG_FRAGTREE2_MESSAGES
  #define dbg_fragtree2(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)
  #else
  #define dbg_fragtree2(fmt, ...)
  #endif
  
  /* Directory entry list manilulation debugging messages */
  #ifdef JFFS2_DBG_DENTLIST_MESSAGES
  #define dbg_dentlist(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)
  #else
  #define dbg_dentlist(fmt, ...)
  #endif
  
  /* Print the messages about manipulating node_refs */
  #ifdef JFFS2_DBG_NODEREF_MESSAGES
  #define dbg_noderef(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)
  #else
  #define dbg_noderef(fmt, ...)
  #endif
  
  /* Manipulations with the list of inodes (JFFS2 inocache) */
  #ifdef JFFS2_DBG_INOCACHE_MESSAGES
  #define dbg_inocache(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)
  #else
  #define dbg_inocache(fmt, ...)
  #endif
  
  /* Summary debugging messages */
  #ifdef JFFS2_DBG_SUMMARY_MESSAGES
  #define dbg_summary(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)
  #else
  #define dbg_summary(fmt, ...)
  #endif
  
  /* File system build messages */
  #ifdef JFFS2_DBG_FSBUILD_MESSAGES
  #define dbg_fsbuild(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)
  #else
  #define dbg_fsbuild(fmt, ...)
  #endif
  
  /* Watch the object allocations */
  #ifdef JFFS2_DBG_MEMALLOC_MESSAGES
  #define dbg_memalloc(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)
  #else
  #define dbg_memalloc(fmt, ...)
  #endif
  
  /* Watch the XATTR subsystem */
  #ifdef JFFS2_DBG_XATTR_MESSAGES
  #define dbg_xattr(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
  #else
  #define dbg_xattr(fmt, ...)
  #endif 
  
  /* "Sanity" checks */
  void
  __jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,
  				     struct jffs2_eraseblock *jeb);
  void
  __jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
  			      struct jffs2_eraseblock *jeb);
  
  /* "Paranoia" checks */
  void
  __jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
  void
  __jffs2_dbg_fragtree_paranoia_check_nolock(struct jffs2_inode_info *f);
  void
  __jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
  			   	struct jffs2_eraseblock *jeb);
  void
  __jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
  				       struct jffs2_eraseblock *jeb);
  void
  __jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
  				    uint32_t ofs, int len);
  
  /* "Dump" functions */
  void
  __jffs2_dbg_dump_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
  void
  __jffs2_dbg_dump_jeb_nolock(struct jffs2_eraseblock *jeb);
  void
  __jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);
  void
  __jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c);
  void
  __jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c,
  		 	   struct jffs2_eraseblock *jeb);
  void
  __jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
  				  struct jffs2_eraseblock *jeb);
  void
  __jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);
  void
  __jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f);
  void
  __jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs);
  void
  __jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs);
  
  #ifdef JFFS2_DBG_PARANOIA_CHECKS
  #define jffs2_dbg_fragtree_paranoia_check(f)			\
  	__jffs2_dbg_fragtree_paranoia_check(f)
  #define jffs2_dbg_fragtree_paranoia_check_nolock(f)		\
  	__jffs2_dbg_fragtree_paranoia_check_nolock(f)
  #define jffs2_dbg_acct_paranoia_check(c, jeb)			\
  	__jffs2_dbg_acct_paranoia_check(c,jeb)
  #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)		\
  	__jffs2_dbg_acct_paranoia_check_nolock(c,jeb)
  #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)		\
  	__jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
  #else
  #define jffs2_dbg_fragtree_paranoia_check(f)
  #define jffs2_dbg_fragtree_paranoia_check_nolock(f)
  #define jffs2_dbg_acct_paranoia_check(c, jeb)
  #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)
  #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
  #endif /* !JFFS2_PARANOIA_CHECKS */
  
  #ifdef JFFS2_DBG_DUMPS
  #define jffs2_dbg_dump_jeb(c, jeb)				\
  	__jffs2_dbg_dump_jeb(c, jeb);
  #define jffs2_dbg_dump_jeb_nolock(jeb)				\
  	__jffs2_dbg_dump_jeb_nolock(jeb);
  #define jffs2_dbg_dump_block_lists(c)				\
  	__jffs2_dbg_dump_block_lists(c)
  #define jffs2_dbg_dump_block_lists_nolock(c)			\
  	__jffs2_dbg_dump_block_lists_nolock(c)
  #define jffs2_dbg_dump_fragtree(f)				\
  	__jffs2_dbg_dump_fragtree(f);
  #define jffs2_dbg_dump_fragtree_nolock(f)			\
  	__jffs2_dbg_dump_fragtree_nolock(f);
  #define jffs2_dbg_dump_buffer(buf, len, offs)			\
  	__jffs2_dbg_dump_buffer(*buf, len, offs);
  #define jffs2_dbg_dump_node(c, ofs)				\
  	__jffs2_dbg_dump_node(c, ofs);
  #else
  #define jffs2_dbg_dump_jeb(c, jeb)
  #define jffs2_dbg_dump_jeb_nolock(jeb)
  #define jffs2_dbg_dump_block_lists(c)
  #define jffs2_dbg_dump_block_lists_nolock(c)
  #define jffs2_dbg_dump_fragtree(f)
  #define jffs2_dbg_dump_fragtree_nolock(f)
  #define jffs2_dbg_dump_buffer(buf, len, offs)
  #define jffs2_dbg_dump_node(c, ofs)
  #endif /* !JFFS2_DBG_DUMPS */
  
  #ifdef JFFS2_DBG_SANITY_CHECKS
  #define jffs2_dbg_acct_sanity_check(c, jeb)			\
  	__jffs2_dbg_acct_sanity_check(c, jeb)
  #define jffs2_dbg_acct_sanity_check_nolock(c, jeb)		\
  	__jffs2_dbg_acct_sanity_check_nolock(c, jeb)
  #else
  #define jffs2_dbg_acct_sanity_check(c, jeb)
  #define jffs2_dbg_acct_sanity_check_nolock(c, jeb)
  #endif /* !JFFS2_DBG_SANITY_CHECKS */
  
  #endif /* _JFFS2_DEBUG_H_ */