fs/jffs2/debug.h

   1 /*
   2  * JFFS2 -- Journalling Flash File System, Version 2.
   3  *
   4  * Copyright (C) 2001-2003 Red Hat, Inc.
   5  *
   6  * Created by David Woodhouse <dwmw2@infradead.org>
   7  *
   8  * For licensing information, see the file 'LICENCE' in this directory.
   9  *
  10  * $Id: debug.h,v 1.21 2005/11/07 11:14:39 gleixner Exp $
  11  *
  12  */
  13 #ifndef _JFFS2_DEBUG_H_
  14 #define _JFFS2_DEBUG_H_
  15
  16 #include <linux/config.h>
  17
  18 #ifndef CONFIG_JFFS2_FS_DEBUG
  19 #define CONFIG_JFFS2_FS_DEBUG 0
  20 #endif
  21
  22 #if CONFIG_JFFS2_FS_DEBUG > 0
  23 /* Enable "paranoia" checks and dumps */
  24 #define JFFS2_DBG_PARANOIA_CHECKS
  25 #define JFFS2_DBG_DUMPS
  26
  27 /*
  28  * By defining/undefining the below macros one may select debugging messages
  29  * fro specific JFFS2 subsystems.
  30  */
  31 #define JFFS2_DBG_READINODE_MESSAGES
  32 #define JFFS2_DBG_FRAGTREE_MESSAGES
  33 #define JFFS2_DBG_DENTLIST_MESSAGES
  34 #define JFFS2_DBG_NODEREF_MESSAGES
  35 #define JFFS2_DBG_INOCACHE_MESSAGES
  36 #define JFFS2_DBG_SUMMARY_MESSAGES
  37 #define JFFS2_DBG_FSBUILD_MESSAGES
  38 #endif
  39
  40 #if CONFIG_JFFS2_FS_DEBUG > 1
  41 #define JFFS2_DBG_FRAGTREE2_MESSAGES
  42 #define JFFS2_DBG_MEMALLOC_MESSAGES
  43 #endif
  44
  45 /* Sanity checks are supposed to be light-weight and enabled by default */
  46 #define JFFS2_DBG_SANITY_CHECKS
  47
  48 /*
  49  * Dx() are mainly used for debugging messages, they must go away and be
  50  * superseded by nicer dbg_xxx() macros...
  51  */
  52 #if CONFIG_JFFS2_FS_DEBUG > 0
  53 #define D1(x) x
  54 #else
  55 #define D1(x)
  56 #endif
  57
  58 #if CONFIG_JFFS2_FS_DEBUG > 1
  59 #define D2(x) x
  60 #else
  61 #define D2(x)
  62 #endif
  63
  64 /* The prefixes of JFFS2 messages */
  65 #define JFFS2_DBG_PREFIX        "[JFFS2 DBG]"
  66 #define JFFS2_ERR_PREFIX        "JFFS2 error:"
  67 #define JFFS2_WARN_PREFIX       "JFFS2 warning:"
  68 #define JFFS2_NOTICE_PREFIX     "JFFS2 notice:"
  69
  70 #define JFFS2_ERR       KERN_ERR
  71 #define JFFS2_WARN      KERN_WARNING
  72 #define JFFS2_NOT       KERN_NOTICE
  73 #define JFFS2_DBG       KERN_DEBUG
  74
  75 #define JFFS2_DBG_MSG_PREFIX    JFFS2_DBG JFFS2_DBG_PREFIX
  76 #define JFFS2_ERR_MSG_PREFIX    JFFS2_ERR JFFS2_ERR_PREFIX
  77 #define JFFS2_WARN_MSG_PREFIX   JFFS2_WARN JFFS2_WARN_PREFIX
  78 #define JFFS2_NOTICE_MSG_PREFIX JFFS2_NOT JFFS2_NOTICE_PREFIX
  79
  80 /* JFFS2 message macros */
  81 #define JFFS2_ERROR(fmt, ...)                                           \
  82         do {                                                            \
  83                 printk(JFFS2_ERR_MSG_PREFIX                             \
  84                         " (%d) %s: " fmt, current->pid,                 \
  85                         __FUNCTION__ , ##__VA_ARGS__);                  \
  86         } while(0)
  87
  88 #define JFFS2_WARNING(fmt, ...)                                         \
  89         do {                                                            \
  90                 printk(JFFS2_WARN_MSG_PREFIX                            \
  91                         " (%d) %s: " fmt, current->pid,                 \
  92                         __FUNCTION__ , ##__VA_ARGS__);                  \
  93         } while(0)
  94
  95 #define JFFS2_NOTICE(fmt, ...)                                          \
  96         do {                                                            \
  97                 printk(JFFS2_NOTICE_MSG_PREFIX                          \
  98                         " (%d) %s: " fmt, current->pid,                 \
  99                         __FUNCTION__ , ##__VA_ARGS__);                  \
 100         } while(0)
 101
 102 #define JFFS2_DEBUG(fmt, ...)                                           \
 103         do {                                                            \
 104                 printk(JFFS2_DBG_MSG_PREFIX                             \
 105                         " (%d) %s: " fmt, current->pid,                 \
 106                         __FUNCTION__ , ##__VA_ARGS__);                  \
 107         } while(0)
 108
 109 /*
 110  * We split our debugging messages on several parts, depending on the JFFS2
 111  * subsystem the message belongs to.
 112  */
 113 /* Read inode debugging messages */
 114 #ifdef JFFS2_DBG_READINODE_MESSAGES
 115 #define dbg_readinode(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 116 #else
 117 #define dbg_readinode(fmt, ...)
 118 #endif
 119
 120 /* Fragtree build debugging messages */
 121 #ifdef JFFS2_DBG_FRAGTREE_MESSAGES
 122 #define dbg_fragtree(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 123 #else
 124 #define dbg_fragtree(fmt, ...)
 125 #endif
 126 #ifdef JFFS2_DBG_FRAGTREE2_MESSAGES
 127 #define dbg_fragtree2(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 128 #else
 129 #define dbg_fragtree2(fmt, ...)
 130 #endif
 131
 132 /* Directory entry list manilulation debugging messages */
 133 #ifdef JFFS2_DBG_DENTLIST_MESSAGES
 134 #define dbg_dentlist(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 135 #else
 136 #define dbg_dentlist(fmt, ...)
 137 #endif
 138
 139 /* Print the messages about manipulating node_refs */
 140 #ifdef JFFS2_DBG_NODEREF_MESSAGES
 141 #define dbg_noderef(fmt, ...)   JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 142 #else
 143 #define dbg_noderef(fmt, ...)
 144 #endif
 145
 146 /* Manipulations with the list of inodes (JFFS2 inocache) */
 147 #ifdef JFFS2_DBG_INOCACHE_MESSAGES
 148 #define dbg_inocache(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 149 #else
 150 #define dbg_inocache(fmt, ...)
 151 #endif
 152
 153 /* Summary debugging messages */
 154 #ifdef JFFS2_DBG_SUMMARY_MESSAGES
 155 #define dbg_summary(fmt, ...)   JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 156 #else
 157 #define dbg_summary(fmt, ...)
 158 #endif
 159
 160 /* File system build messages */
 161 #ifdef JFFS2_DBG_FSBUILD_MESSAGES
 162 #define dbg_fsbuild(fmt, ...)   JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 163 #else
 164 #define dbg_fsbuild(fmt, ...)
 165 #endif
 166
 167 /* Watch the object allocations */
 168 #ifdef JFFS2_DBG_MEMALLOC_MESSAGES
 169 #define dbg_memalloc(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 170 #else
 171 #define dbg_memalloc(fmt, ...)
 172 #endif
 173
 174
 175 /* "Sanity" checks */
 176 void
 177 __jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,
 178                                      struct jffs2_eraseblock *jeb);
 179 void
 180 __jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
 181                               struct jffs2_eraseblock *jeb);
 182
 183 /* "Paranoia" checks */
 184 void
 185 __jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
 186 void
 187 __jffs2_dbg_fragtree_paranoia_check_nolock(struct jffs2_inode_info *f);
 188 void
 189 __jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
 190                                 struct jffs2_eraseblock *jeb);
 191 void
 192 __jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
 193                                        struct jffs2_eraseblock *jeb);
 194 void
 195 __jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
 196                                     uint32_t ofs, int len);
 197
 198 /* "Dump" functions */
 199 void
 200 __jffs2_dbg_dump_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
 201 void
 202 __jffs2_dbg_dump_jeb_nolock(struct jffs2_eraseblock *jeb);
 203 void
 204 __jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);
 205 void
 206 __jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c);
 207 void
 208 __jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c,
 209                            struct jffs2_eraseblock *jeb);
 210 void
 211 __jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
 212                                   struct jffs2_eraseblock *jeb);
 213 void
 214 __jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);
 215 void
 216 __jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f);
 217 void
 218 __jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs);
 219 void
 220 __jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs);
 221
 222 #ifdef JFFS2_DBG_PARANOIA_CHECKS
 223 #define jffs2_dbg_fragtree_paranoia_check(f)                    \
 224         __jffs2_dbg_fragtree_paranoia_check(f)
 225 #define jffs2_dbg_fragtree_paranoia_check_nolock(f)             \
 226         __jffs2_dbg_fragtree_paranoia_check_nolock(f)
 227 #define jffs2_dbg_acct_paranoia_check(c, jeb)                   \
 228         __jffs2_dbg_acct_paranoia_check(c,jeb)
 229 #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)            \
 230         __jffs2_dbg_acct_paranoia_check_nolock(c,jeb)
 231 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)          \
 232         __jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
 233 #else
 234 #define jffs2_dbg_fragtree_paranoia_check(f)
 235 #define jffs2_dbg_fragtree_paranoia_check_nolock(f)
 236 #define jffs2_dbg_acct_paranoia_check(c, jeb)
 237 #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)
 238 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
 239 #endif /* !JFFS2_PARANOIA_CHECKS */
 240
 241 #ifdef JFFS2_DBG_DUMPS
 242 #define jffs2_dbg_dump_jeb(c, jeb)                              \
 243         __jffs2_dbg_dump_jeb(c, jeb);
 244 #define jffs2_dbg_dump_jeb_nolock(jeb)                          \
 245         __jffs2_dbg_dump_jeb_nolock(jeb);
 246 #define jffs2_dbg_dump_block_lists(c)                           \
 247         __jffs2_dbg_dump_block_lists(c)
 248 #define jffs2_dbg_dump_block_lists_nolock(c)                    \
 249         __jffs2_dbg_dump_block_lists_nolock(c)
 250 #define jffs2_dbg_dump_fragtree(f)                              \
 251         __jffs2_dbg_dump_fragtree(f);
 252 #define jffs2_dbg_dump_fragtree_nolock(f)                       \
 253         __jffs2_dbg_dump_fragtree_nolock(f);
 254 #define jffs2_dbg_dump_buffer(buf, len, offs)                   \
 255         __jffs2_dbg_dump_buffer(*buf, len, offs);
 256 #define jffs2_dbg_dump_node(c, ofs)                             \
 257         __jffs2_dbg_dump_node(c, ofs);
 258 #else
 259 #define jffs2_dbg_dump_jeb(c, jeb)
 260 #define jffs2_dbg_dump_jeb_nolock(jeb)
 261 #define jffs2_dbg_dump_block_lists(c)
 262 #define jffs2_dbg_dump_block_lists_nolock(c)
 263 #define jffs2_dbg_dump_fragtree(f)
 264 #define jffs2_dbg_dump_fragtree_nolock(f)
 265 #define jffs2_dbg_dump_buffer(buf, len, offs)
 266 #define jffs2_dbg_dump_node(c, ofs)
 267 #endif /* !JFFS2_DBG_DUMPS */
 268
 269 #ifdef JFFS2_DBG_SANITY_CHECKS
 270 #define jffs2_dbg_acct_sanity_check(c, jeb)                     \
 271         __jffs2_dbg_acct_sanity_check(c, jeb)
 272 #define jffs2_dbg_acct_sanity_check_nolock(c, jeb)              \
 273         __jffs2_dbg_acct_sanity_check_nolock(c, jeb)
 274 #else
 275 #define jffs2_dbg_acct_sanity_check(c, jeb)
 276 #define jffs2_dbg_acct_sanity_check_nolock(c, jeb)
 277 #endif /* !JFFS2_DBG_SANITY_CHECKS */
 278
 279 #endif /* _JFFS2_DEBUG_H_ */