7d14f7b01397852063060567b38fd1e4fe91187a
[linux-2.6.git] / 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 1.1 2005/07/17 06:56:20 dedekind 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 1
20 #endif
21
22 #if CONFIG_JFFS2_FS_DEBUG > 0
23 #define JFFS2_DBG_PARANOIA_CHECKS
24 #define D1(x) x
25 #else
26 #define D1(x)
27 #endif
28
29 #if CONFIG_JFFS2_FS_DEBUG > 1
30 #define D2(x) x
31 #else
32 #define D2(x)
33 #endif
34
35 /* Enable JFFS2 sanity checks */
36 #define JFFS2_DBG_SANITY_CHECKS
37
38 #if CONFIG_JFFS2_FS_DEBUG > 0
39 void
40 jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);
41
42 void
43 jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
44
45 void
46 jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);
47
48 void
49 jffs2_dbg_dump_buffer(char *buf, int len, uint32_t offs);
50 #endif
51
52 #ifdef JFFS2_DBG_PARANOIA_CHECKS
53 void
54 jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
55
56 void
57 jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
58                               struct jffs2_eraseblock *jeb);
59
60 void
61 jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
62                                   uint32_t ofs, int len);
63 #else
64 #define jffs2_dbg_fragtree_paranoia_check(f)
65 #define jffs2_dbg_acct_paranoia_check(c, jeb)
66 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
67 #endif /* !JFFS2_PARANOIA_CHECKS */
68
69 #ifdef JFFS2_DBG_SANITY_CHECKS
70 /*
71  * Check the space accounting of the file system and of
72  * the JFFS3 erasable block 'jeb'.
73  */
74 static inline void
75 jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
76                             struct jffs2_eraseblock *jeb)
77 {
78         if (unlikely(jeb && jeb->used_size + jeb->dirty_size +
79                         jeb->free_size + jeb->wasted_size +
80                         jeb->unchecked_size != c->sector_size)) {
81                 printk(KERN_ERR "Eeep. Space accounting for block at 0x%08x is screwed\n", jeb->offset);
82                 printk(KERN_ERR "free %#08x + dirty %#08x + used %#08x + wasted %#08x + unchecked "
83                                 "%#08x != total %#08x\n", jeb->free_size, jeb->dirty_size, jeb->used_size,
84                                 jeb->wasted_size, jeb->unchecked_size, c->sector_size);
85                 BUG();
86         }
87
88         if (unlikely(c->used_size + c->dirty_size + c->free_size + c->erasing_size + c->bad_size
89                                 + c->wasted_size + c->unchecked_size != c->flash_size)) {
90                 printk(KERN_ERR "Eeep. Space accounting superblock info is screwed\n");
91                 printk(KERN_ERR "free %#08x + dirty %#08x + used %#08x + erasing %#08x + bad %#08x + "
92                                 "wasted %#08x + unchecked %#08x != total %#08x\n",
93                                 c->free_size, c->dirty_size, c->used_size, c->erasing_size, c->bad_size,
94                                 c->wasted_size, c->unchecked_size, c->flash_size);
95                 BUG();
96         }
97 }
98 #else
99 static inline void
100 jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
101                             struct jffs2_eraseblock *jeb);
102 #endif /* !JFFS2_DBG_SANITY_CHECKS */
103
104 #endif /* _JFFS2_DEBUG_H_ */