Root/fs/jffs2/debug.h

1/*
2 * JFFS2 -- Journalling Flash File System, Version 2.
3 *
4 * Copyright © 2001-2007 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 */
11
12#ifndef _JFFS2_DEBUG_H_
13#define _JFFS2_DEBUG_H_
14
15#include <linux/sched.h>
16
17#ifndef CONFIG_JFFS2_FS_DEBUG
18#define CONFIG_JFFS2_FS_DEBUG 0
19#endif
20
21#if CONFIG_JFFS2_FS_DEBUG > 0
22/* Enable "paranoia" checks and dumps */
23#define JFFS2_DBG_PARANOIA_CHECKS
24#define JFFS2_DBG_DUMPS
25
26/*
27 * By defining/undefining the below macros one may select debugging messages
28 * fro specific JFFS2 subsystems.
29 */
30#define JFFS2_DBG_READINODE_MESSAGES
31#define JFFS2_DBG_FRAGTREE_MESSAGES
32#define JFFS2_DBG_DENTLIST_MESSAGES
33#define JFFS2_DBG_NODEREF_MESSAGES
34#define JFFS2_DBG_INOCACHE_MESSAGES
35#define JFFS2_DBG_SUMMARY_MESSAGES
36#define JFFS2_DBG_FSBUILD_MESSAGES
37#endif
38
39#if CONFIG_JFFS2_FS_DEBUG > 1
40#define JFFS2_DBG_FRAGTREE2_MESSAGES
41#define JFFS2_DBG_READINODE2_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50 * superseded by nicer dbg_xxx() macros...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, task_pid_nr(current), \
85            __func__ , ##__VA_ARGS__); \
86    } while(0)
87
88#define JFFS2_WARNING(fmt, ...) \
89    do { \
90        printk(JFFS2_WARN_MSG_PREFIX \
91            " (%d) %s: " fmt, task_pid_nr(current), \
92            __func__ , ##__VA_ARGS__); \
93    } while(0)
94
95#define JFFS2_NOTICE(fmt, ...) \
96    do { \
97        printk(JFFS2_NOTICE_MSG_PREFIX \
98            " (%d) %s: " fmt, task_pid_nr(current), \
99            __func__ , ##__VA_ARGS__); \
100    } while(0)
101
102#define JFFS2_DEBUG(fmt, ...) \
103    do { \
104        printk(JFFS2_DBG_MSG_PREFIX \
105            " (%d) %s: " fmt, task_pid_nr(current), \
106            __func__ , ##__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#ifdef JFFS2_DBG_READINODE2_MESSAGES
120#define dbg_readinode2(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
121#else
122#define dbg_readinode2(fmt, ...)
123#endif
124
125/* Fragtree build debugging messages */
126#ifdef JFFS2_DBG_FRAGTREE_MESSAGES
127#define dbg_fragtree(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
128#else
129#define dbg_fragtree(fmt, ...)
130#endif
131#ifdef JFFS2_DBG_FRAGTREE2_MESSAGES
132#define dbg_fragtree2(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
133#else
134#define dbg_fragtree2(fmt, ...)
135#endif
136
137/* Directory entry list manilulation debugging messages */
138#ifdef JFFS2_DBG_DENTLIST_MESSAGES
139#define dbg_dentlist(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
140#else
141#define dbg_dentlist(fmt, ...)
142#endif
143
144/* Print the messages about manipulating node_refs */
145#ifdef JFFS2_DBG_NODEREF_MESSAGES
146#define dbg_noderef(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
147#else
148#define dbg_noderef(fmt, ...)
149#endif
150
151/* Manipulations with the list of inodes (JFFS2 inocache) */
152#ifdef JFFS2_DBG_INOCACHE_MESSAGES
153#define dbg_inocache(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
154#else
155#define dbg_inocache(fmt, ...)
156#endif
157
158/* Summary debugging messages */
159#ifdef JFFS2_DBG_SUMMARY_MESSAGES
160#define dbg_summary(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
161#else
162#define dbg_summary(fmt, ...)
163#endif
164
165/* File system build messages */
166#ifdef JFFS2_DBG_FSBUILD_MESSAGES
167#define dbg_fsbuild(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
168#else
169#define dbg_fsbuild(fmt, ...)
170#endif
171
172/* Watch the object allocations */
173#ifdef JFFS2_DBG_MEMALLOC_MESSAGES
174#define dbg_memalloc(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
175#else
176#define dbg_memalloc(fmt, ...)
177#endif
178
179/* Watch the XATTR subsystem */
180#ifdef JFFS2_DBG_XATTR_MESSAGES
181#define dbg_xattr(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
182#else
183#define dbg_xattr(fmt, ...)
184#endif
185
186/* "Sanity" checks */
187void
188__jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,
189                     struct jffs2_eraseblock *jeb);
190void
191__jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
192                  struct jffs2_eraseblock *jeb);
193
194/* "Paranoia" checks */
195void
196__jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
197void
198__jffs2_dbg_fragtree_paranoia_check_nolock(struct jffs2_inode_info *f);
199void
200__jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
201                   struct jffs2_eraseblock *jeb);
202void
203__jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
204                       struct jffs2_eraseblock *jeb);
205void
206__jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
207                    uint32_t ofs, int len);
208
209/* "Dump" functions */
210void
211__jffs2_dbg_dump_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
212void
213__jffs2_dbg_dump_jeb_nolock(struct jffs2_eraseblock *jeb);
214void
215__jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);
216void
217__jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c);
218void
219__jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c,
220                struct jffs2_eraseblock *jeb);
221void
222__jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
223                  struct jffs2_eraseblock *jeb);
224void
225__jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);
226void
227__jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f);
228void
229__jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs);
230void
231__jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs);
232
233#ifdef JFFS2_DBG_PARANOIA_CHECKS
234#define jffs2_dbg_fragtree_paranoia_check(f) \
235    __jffs2_dbg_fragtree_paranoia_check(f)
236#define jffs2_dbg_fragtree_paranoia_check_nolock(f) \
237    __jffs2_dbg_fragtree_paranoia_check_nolock(f)
238#define jffs2_dbg_acct_paranoia_check(c, jeb) \
239    __jffs2_dbg_acct_paranoia_check(c,jeb)
240#define jffs2_dbg_acct_paranoia_check_nolock(c, jeb) \
241    __jffs2_dbg_acct_paranoia_check_nolock(c,jeb)
242#define jffs2_dbg_prewrite_paranoia_check(c, ofs, len) \
243    __jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
244#else
245#define jffs2_dbg_fragtree_paranoia_check(f)
246#define jffs2_dbg_fragtree_paranoia_check_nolock(f)
247#define jffs2_dbg_acct_paranoia_check(c, jeb)
248#define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)
249#define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
250#endif /* !JFFS2_PARANOIA_CHECKS */
251
252#ifdef JFFS2_DBG_DUMPS
253#define jffs2_dbg_dump_jeb(c, jeb) \
254    __jffs2_dbg_dump_jeb(c, jeb);
255#define jffs2_dbg_dump_jeb_nolock(jeb) \
256    __jffs2_dbg_dump_jeb_nolock(jeb);
257#define jffs2_dbg_dump_block_lists(c) \
258    __jffs2_dbg_dump_block_lists(c)
259#define jffs2_dbg_dump_block_lists_nolock(c) \
260    __jffs2_dbg_dump_block_lists_nolock(c)
261#define jffs2_dbg_dump_fragtree(f) \
262    __jffs2_dbg_dump_fragtree(f);
263#define jffs2_dbg_dump_fragtree_nolock(f) \
264    __jffs2_dbg_dump_fragtree_nolock(f);
265#define jffs2_dbg_dump_buffer(buf, len, offs) \
266    __jffs2_dbg_dump_buffer(*buf, len, offs);
267#define jffs2_dbg_dump_node(c, ofs) \
268    __jffs2_dbg_dump_node(c, ofs);
269#else
270#define jffs2_dbg_dump_jeb(c, jeb)
271#define jffs2_dbg_dump_jeb_nolock(jeb)
272#define jffs2_dbg_dump_block_lists(c)
273#define jffs2_dbg_dump_block_lists_nolock(c)
274#define jffs2_dbg_dump_fragtree(f)
275#define jffs2_dbg_dump_fragtree_nolock(f)
276#define jffs2_dbg_dump_buffer(buf, len, offs)
277#define jffs2_dbg_dump_node(c, ofs)
278#endif /* !JFFS2_DBG_DUMPS */
279
280#ifdef JFFS2_DBG_SANITY_CHECKS
281#define jffs2_dbg_acct_sanity_check(c, jeb) \
282    __jffs2_dbg_acct_sanity_check(c, jeb)
283#define jffs2_dbg_acct_sanity_check_nolock(c, jeb) \
284    __jffs2_dbg_acct_sanity_check_nolock(c, jeb)
285#else
286#define jffs2_dbg_acct_sanity_check(c, jeb)
287#define jffs2_dbg_acct_sanity_check_nolock(c, jeb)
288#endif /* !JFFS2_DBG_SANITY_CHECKS */
289
290#endif /* _JFFS2_DEBUG_H_ */
291

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