1 files changed, 217 insertions, 34 deletions

diff --git a/fs/jffs2/debug.h b/fs/jffs2/debug.h
index 7d14f7b01397..51ff099a6502 100644
--- a/fs/jffs2/debug.h
+++ b/fs/jffs2/debug.h
@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: debug.h,v 1.1 2005/07/17 06:56:20 dedekind Exp $
+ * $Id: debug.h,v 1.5 2005/07/24 15:14:14 dedekind Exp $
  *
  */
 #ifndef _JFFS2_DEBUG_H_
@@ -15,12 +15,52 @@
 
 #include <linux/config.h>
 
+/* ------------------------------------------------ */
+/* TODO: remove */
+#undef CONFIG_JFFS2_FS_DEBUG
+#define CONFIG_JFFS2_FS_DEBUG 0
+//#define JFFS2_DBG_PARANOIA_CHECKS
+//#define JFFS2_DBG_DUMPS
+#define JFFS2_DBG_READINODE_MESSAGES
+//#define JFFS2_DBG_FRAGTREE_MESSAGES
+//#define JFFS2_DBG_FRAGTREE2_MESSAGES
+#undef KERN_DEBUG
+#undef KERN_WARNING
+#undef KERN_NOTICE
+#undef KERN_ERR
+#define KERN_DEBUG   KERN_CRIT
+#define KERN_WARNING KERN_CRIT
+#define KERN_NOTICE  KERN_CRIT
+#define KERN_ERR     KERN_CRIT
+/* ------------------------------------------------ */
+
 #ifndef CONFIG_JFFS2_FS_DEBUG
 #define CONFIG_JFFS2_FS_DEBUG 1
 #endif
 
-#if CONFIG_JFFS2_FS_DEBUG > 0
+#if CONFIG_JFFS2_FS_DEBUG == 1
+/* Enable "paranoia" checks and dumps */
 #define JFFS2_DBG_PARANOIA_CHECKS
+#define JFFS2_DBG_DUMPS
+#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
+#endif
+
+#if CONFIG_JFFS2_FS_DEBUG == 2
+#define JFFS2_DBG_FRAGTREE2_MESSAGES
+#endif
+
+/* Enable JFFS2 sanity checks by default */
+#define JFFS2_DBG_SANITY_CHECKS
+
+/* 
+ * Dx() are mainly used for debugging messages, they must go away and be
+ * superseded by nicer JFFS2_DBG_XXX() macros...
+ */
+#if CONFIG_JFFS2_FS_DEBUG > 0
 #define D1(x) x
 #else
 #define D1(x)
@@ -32,73 +72,216 @@
 #define D2(x)
 #endif
 
-/* Enable JFFS2 sanity checks */
-#define JFFS2_DBG_SANITY_CHECKS
+/* The prefixes of JFFS2 messages */
+#define JFFS2_DBG_MSG_PREFIX "[JFFS2 DBG]"
+#define JFFS2_ERR_MSG_PREFIX "JFFS2 error: "
+#define JFFS2_WARN_MSG_PREFIX "JFFS2 warning: "
+#define JFFS2_NOTICE_MSG_PREFIX "JFFS2 notice: "
 
-#if CONFIG_JFFS2_FS_DEBUG > 0
-void
-jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);
+#define JFFS2_ERR_LVL           KERN_ERR
+#define JFFS2_WARN_LVL          KERN_WARNING
+#define JFFS2_NOTICE_LVL        KERN_NOTICE
+#define JFFS2_DBG_LVL           KERN_DEBUG
 
-void
-jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
+/* JFFS2 message macros */
+#define JFFS2_ERROR(fmt, ...)                                           \
+        do {                                                            \
+                printk(JFFS2_ERR_LVL JFFS2_ERR_MSG_PREFIX " %s: "       \
+                                fmt, __FUNCTION__, ##__VA_ARGS__);      \
+        } while(0)
 
-void
-jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);
+#define JFFS2_WARNING(fmt, ...)                                         \
+        do {                                                            \
+                printk(JFFS2_WARN_LVL JFFS2_WARN_MSG_PREFIX " %s: "     \
+                                fmt, __FUNCTION__, ##__VA_ARGS__);      \
+        } while(0)
+                        
+#define JFFS2_NOTICE(fmt, ...)                                          \
+        do {                                                            \
+                printk(JFFS2_NOTICE_LVL JFFS2_NOTICE_MSG_PREFIX " %s: " \
+                                fmt, __FUNCTION__, ##__VA_ARGS__);      \
+        } while(0)
 
-void
-jffs2_dbg_dump_buffer(char *buf, int len, uint32_t offs);
+#define JFFS2_DEBUG(fmt, ...)                                           \
+        do {                                                            \
+                printk(JFFS2_DBG_LVL JFFS2_DBG_MSG_PREFIX " %s: "       \
+                                fmt, __FUNCTION__, ##__VA_ARGS__);      \
+        } while(0)
+
+/* 
+ * 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 JFFS2_DBG_READINODE(fmt, ...)   JFFS2_DEBUG(fmt, ##__VA_ARGS__)
+#else
+#define JFFS2_DBG_READINODE(fmt, ...)
 #endif
 
-#ifdef JFFS2_DBG_PARANOIA_CHECKS
-void
-jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
+/* Fragtree build debugging messages */
+#ifdef JFFS2_DBG_FRAGTREE_MESSAGES
+#define JFFS2_DBG_FRAGTREE(fmt, ...)    JFFS2_DEBUG(fmt, ##__VA_ARGS__)
+#else
+#define JFFS2_DBG_FRAGTREE(fmt, ...)
+#endif
+
+/* Directory entry list manilulation debugging messages */
+#ifdef JFFS2_DBG_DENTLIST_MESSAGES
+#define JFFS2_DBG_DENTLIST(fmt, ...)    JFFS2_DEBUG(fmt, ##__VA_ARGS__)
+#else
+#define JFFS2_DBG_DENTLIST(fmt, ...)
+#endif
+#ifdef JFFS2_DBG_FRAGTREE2_MESSAGES
+#define JFFS2_DBG_FRAGTREE2(fmt, ...)   JFFS2_DEBUG(fmt, ##__VA_ARGS__)
+#else
+#define JFFS2_DBG_FRAGTREE2(fmt, ...)
+#endif
+
+/* Plays with node_refs */
+#ifdef JFFS2_DBG_NODEREF_MESSAGES
+#define JFFS2_DBG_NODEREF(fmt, ...)     JFFS2_DEBUG(fmt, ##__VA_ARGS__)
+#else
+#define JFFS2_DBG_NODEREF(fmt, ...)
+#endif
 
+/* Plays with the list of inodes (JFFS2 inocache) */
+#ifdef JFFS2_DBG_INOCACHE_MESSAGES
+#define JFFS2_DBG_INOCACHE(fmt, ...)    JFFS2_DEBUG(fmt, ##__VA_ARGS__)
+#else
+#define JFFS2_DBG_INOCACHE(fmt, ...)
+#endif
+
+/* "Paranoia" checks */
+void
+__jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
 void
-jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
-                              struct jffs2_eraseblock *jeb);
+__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_prewrite_paranoia_check(struct jffs2_sb_info *c,
-                                  uint32_t ofs, int len);
+__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 */
+
+/*
+ * Sanity checks are supposed to be light-weight and enabled by default.
+ */
 #ifdef JFFS2_DBG_SANITY_CHECKS
 /*
  * Check the space accounting of the file system and of
- * the JFFS3 erasable block 'jeb'.
+ * the JFFS2 erasable block 'jeb'.
  */
 static inline void
-jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
-                            struct jffs2_eraseblock *jeb)
+jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,
+                                   struct jffs2_eraseblock *jeb)
 {
         if (unlikely(jeb && jeb->used_size + jeb->dirty_size +
                         jeb->free_size + jeb->wasted_size +
                         jeb->unchecked_size != c->sector_size)) {
-                printk(KERN_ERR "Eeep. Space accounting for block at 0x%08x is screwed\n", jeb->offset);
-                printk(KERN_ERR "free %#08x + dirty %#08x + used %#08x + wasted %#08x + unchecked "
-                                "%#08x != total %#08x\n", jeb->free_size, jeb->dirty_size, jeb->used_size,
-                                jeb->wasted_size, jeb->unchecked_size, c->sector_size);
+                JFFS2_ERROR("eeep, space accounting for block at 0x%08x is screwed.\n", jeb->offset);
+                JFFS2_ERROR("free %#08x + dirty %#08x + used %#08x + wasted %#08x + unchecked "
+                        "%#08x != total %#08x.\n", jeb->free_size, jeb->dirty_size, jeb->used_size,
+                        jeb->wasted_size, jeb->unchecked_size, c->sector_size);
                 BUG();
         }
 
         if (unlikely(c->used_size + c->dirty_size + c->free_size + c->erasing_size + c->bad_size
                                 + c->wasted_size + c->unchecked_size != c->flash_size)) {
-                printk(KERN_ERR "Eeep. Space accounting superblock info is screwed\n");
-                printk(KERN_ERR "free %#08x + dirty %#08x + used %#08x + erasing %#08x + bad %#08x + "
-                                "wasted %#08x + unchecked %#08x != total %#08x\n",
-                                c->free_size, c->dirty_size, c->used_size, c->erasing_size, c->bad_size,
-                                c->wasted_size, c->unchecked_size, c->flash_size);
+                JFFS2_ERROR("eeep, space accounting superblock info is screwed.\n");
+                JFFS2_ERROR("free %#08x + dirty %#08x + used %#08x + erasing %#08x + bad %#08x + "
+                        "wasted %#08x + unchecked %#08x != total %#08x.\n",
+                        c->free_size, c->dirty_size, c->used_size, c->erasing_size, c->bad_size,
+                        c->wasted_size, c->unchecked_size, c->flash_size);
                 BUG();
         }
 }
-#else
+
 static inline void
 jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
-                            struct jffs2_eraseblock *jeb);
+                            struct jffs2_eraseblock *jeb)
+{
+        spin_lock(&c->erase_completion_lock);
+        jffs2_dbg_acct_sanity_check_nolock(c, jeb);
+        spin_unlock(&c->erase_completion_lock);
+}
+#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_ */