2 * JFFS2 -- Journalling Flash File System, Version 2.
4 * Copyright © 2001-2007 Red Hat, Inc.
5 * Copyright © 2004-2010 David Woodhouse <dwmw2@infradead.org>
7 * Created by David Woodhouse <dwmw2@infradead.org>
9 * For licensing information, see the file 'LICENCE' in this directory.
13 #ifndef _JFFS2_DEBUG_H_
14 #define _JFFS2_DEBUG_H_
16 #include <linux/sched.h>
18 #ifndef CONFIG_JFFS2_FS_DEBUG
19 #define CONFIG_JFFS2_FS_DEBUG 0
22 #if CONFIG_JFFS2_FS_DEBUG > 0
23 /* Enable "paranoia" checks and dumps */
24 #define JFFS2_DBG_PARANOIA_CHECKS
25 #define JFFS2_DBG_DUMPS
28 * By defining/undefining the below macros one may select debugging messages
29 * fro specific JFFS2 subsystems.
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
40 #if CONFIG_JFFS2_FS_DEBUG > 1
41 #define JFFS2_DBG_FRAGTREE2_MESSAGES
42 #define JFFS2_DBG_READINODE2_MESSAGES
43 #define JFFS2_DBG_MEMALLOC_MESSAGES
46 /* Sanity checks are supposed to be light-weight and enabled by default */
47 #define JFFS2_DBG_SANITY_CHECKS
50 * Dx() are mainly used for debugging messages, they must go away and be
51 * superseded by nicer dbg_xxx() macros...
53 #if CONFIG_JFFS2_FS_DEBUG > 0
60 #if CONFIG_JFFS2_FS_DEBUG > 1
66 #define jffs2_dbg(level, fmt, ...) \
68 if (CONFIG_JFFS2_FS_DEBUG >= level) \
69 pr_debug(fmt, ##__VA_ARGS__); \
72 /* The prefixes of JFFS2 messages */
73 #define JFFS2_DBG KERN_DEBUG
74 #define JFFS2_DBG_PREFIX "[JFFS2 DBG]"
75 #define JFFS2_DBG_MSG_PREFIX JFFS2_DBG JFFS2_DBG_PREFIX
77 /* JFFS2 message macros */
78 #define JFFS2_ERROR(fmt, ...) \
79 pr_err("error: (%d) %s: " fmt, \
80 task_pid_nr(current), __func__, ##__VA_ARGS__)
82 #define JFFS2_WARNING(fmt, ...) \
83 pr_warn("warning: (%d) %s: " fmt, \
84 task_pid_nr(current), __func__, ##__VA_ARGS__)
86 #define JFFS2_NOTICE(fmt, ...) \
87 pr_notice("notice: (%d) %s: " fmt, \
88 task_pid_nr(current), __func__, ##__VA_ARGS__)
90 #define JFFS2_DEBUG(fmt, ...) \
91 printk(KERN_DEBUG "[JFFS2 DBG] (%d) %s: " fmt, \
92 task_pid_nr(current), __func__, ##__VA_ARGS__)
95 * We split our debugging messages on several parts, depending on the JFFS2
96 * subsystem the message belongs to.
98 /* Read inode debugging messages */
99 #ifdef JFFS2_DBG_READINODE_MESSAGES
100 #define dbg_readinode(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
102 #define dbg_readinode(fmt, ...)
104 #ifdef JFFS2_DBG_READINODE2_MESSAGES
105 #define dbg_readinode2(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
107 #define dbg_readinode2(fmt, ...)
110 /* Fragtree build debugging messages */
111 #ifdef JFFS2_DBG_FRAGTREE_MESSAGES
112 #define dbg_fragtree(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
114 #define dbg_fragtree(fmt, ...)
116 #ifdef JFFS2_DBG_FRAGTREE2_MESSAGES
117 #define dbg_fragtree2(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
119 #define dbg_fragtree2(fmt, ...)
122 /* Directory entry list manilulation debugging messages */
123 #ifdef JFFS2_DBG_DENTLIST_MESSAGES
124 #define dbg_dentlist(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
126 #define dbg_dentlist(fmt, ...)
129 /* Print the messages about manipulating node_refs */
130 #ifdef JFFS2_DBG_NODEREF_MESSAGES
131 #define dbg_noderef(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
133 #define dbg_noderef(fmt, ...)
136 /* Manipulations with the list of inodes (JFFS2 inocache) */
137 #ifdef JFFS2_DBG_INOCACHE_MESSAGES
138 #define dbg_inocache(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
140 #define dbg_inocache(fmt, ...)
143 /* Summary debugging messages */
144 #ifdef JFFS2_DBG_SUMMARY_MESSAGES
145 #define dbg_summary(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
147 #define dbg_summary(fmt, ...)
150 /* File system build messages */
151 #ifdef JFFS2_DBG_FSBUILD_MESSAGES
152 #define dbg_fsbuild(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
154 #define dbg_fsbuild(fmt, ...)
157 /* Watch the object allocations */
158 #ifdef JFFS2_DBG_MEMALLOC_MESSAGES
159 #define dbg_memalloc(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
161 #define dbg_memalloc(fmt, ...)
164 /* Watch the XATTR subsystem */
165 #ifdef JFFS2_DBG_XATTR_MESSAGES
166 #define dbg_xattr(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
168 #define dbg_xattr(fmt, ...)
171 /* "Sanity" checks */
173 __jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,
174 struct jffs2_eraseblock *jeb);
176 __jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
177 struct jffs2_eraseblock *jeb);
179 /* "Paranoia" checks */
181 __jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
183 __jffs2_dbg_fragtree_paranoia_check_nolock(struct jffs2_inode_info *f);
185 __jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
186 struct jffs2_eraseblock *jeb);
188 __jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
189 struct jffs2_eraseblock *jeb);
191 __jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
192 uint32_t ofs, int len);
194 /* "Dump" functions */
196 __jffs2_dbg_dump_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
198 __jffs2_dbg_dump_jeb_nolock(struct jffs2_eraseblock *jeb);
200 __jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);
202 __jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c);
204 __jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c,
205 struct jffs2_eraseblock *jeb);
207 __jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
208 struct jffs2_eraseblock *jeb);
210 __jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);
212 __jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f);
214 __jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs);
216 __jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs);
218 #ifdef JFFS2_DBG_PARANOIA_CHECKS
219 #define jffs2_dbg_fragtree_paranoia_check(f) \
220 __jffs2_dbg_fragtree_paranoia_check(f)
221 #define jffs2_dbg_fragtree_paranoia_check_nolock(f) \
222 __jffs2_dbg_fragtree_paranoia_check_nolock(f)
223 #define jffs2_dbg_acct_paranoia_check(c, jeb) \
224 __jffs2_dbg_acct_paranoia_check(c,jeb)
225 #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb) \
226 __jffs2_dbg_acct_paranoia_check_nolock(c,jeb)
227 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len) \
228 __jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
230 #define jffs2_dbg_fragtree_paranoia_check(f)
231 #define jffs2_dbg_fragtree_paranoia_check_nolock(f)
232 #define jffs2_dbg_acct_paranoia_check(c, jeb)
233 #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)
234 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
235 #endif /* !JFFS2_PARANOIA_CHECKS */
237 #ifdef JFFS2_DBG_DUMPS
238 #define jffs2_dbg_dump_jeb(c, jeb) \
239 __jffs2_dbg_dump_jeb(c, jeb);
240 #define jffs2_dbg_dump_jeb_nolock(jeb) \
241 __jffs2_dbg_dump_jeb_nolock(jeb);
242 #define jffs2_dbg_dump_block_lists(c) \
243 __jffs2_dbg_dump_block_lists(c)
244 #define jffs2_dbg_dump_block_lists_nolock(c) \
245 __jffs2_dbg_dump_block_lists_nolock(c)
246 #define jffs2_dbg_dump_fragtree(f) \
247 __jffs2_dbg_dump_fragtree(f);
248 #define jffs2_dbg_dump_fragtree_nolock(f) \
249 __jffs2_dbg_dump_fragtree_nolock(f);
250 #define jffs2_dbg_dump_buffer(buf, len, offs) \
251 __jffs2_dbg_dump_buffer(*buf, len, offs);
252 #define jffs2_dbg_dump_node(c, ofs) \
253 __jffs2_dbg_dump_node(c, ofs);
255 #define jffs2_dbg_dump_jeb(c, jeb)
256 #define jffs2_dbg_dump_jeb_nolock(jeb)
257 #define jffs2_dbg_dump_block_lists(c)
258 #define jffs2_dbg_dump_block_lists_nolock(c)
259 #define jffs2_dbg_dump_fragtree(f)
260 #define jffs2_dbg_dump_fragtree_nolock(f)
261 #define jffs2_dbg_dump_buffer(buf, len, offs)
262 #define jffs2_dbg_dump_node(c, ofs)
263 #endif /* !JFFS2_DBG_DUMPS */
265 #ifdef JFFS2_DBG_SANITY_CHECKS
266 #define jffs2_dbg_acct_sanity_check(c, jeb) \
267 __jffs2_dbg_acct_sanity_check(c, jeb)
268 #define jffs2_dbg_acct_sanity_check_nolock(c, jeb) \
269 __jffs2_dbg_acct_sanity_check_nolock(c, jeb)
271 #define jffs2_dbg_acct_sanity_check(c, jeb)
272 #define jffs2_dbg_acct_sanity_check_nolock(c, jeb)
273 #endif /* !JFFS2_DBG_SANITY_CHECKS */
275 #endif /* _JFFS2_DEBUG_H_ */