2 * This file is part of UBIFS.
4 * Copyright (C) 2006-2008 Nokia Corporation.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published by
8 * the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along with
16 * this program; if not, write to the Free Software Foundation, Inc., 51
17 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Authors: Artem Bityutskiy (Битюцкий Артём)
23 #ifndef __UBIFS_DEBUG_H__
24 #define __UBIFS_DEBUG_H__
26 #ifdef CONFIG_UBIFS_FS_DEBUG
29 * ubifs_debug_info - per-FS debugging information.
30 * @buf: a buffer of LEB size, used for various purposes
31 * @old_zroot: old index root - used by 'dbg_check_old_index()'
32 * @old_zroot_level: old index root level - used by 'dbg_check_old_index()'
33 * @old_zroot_sqnum: old index root sqnum - used by 'dbg_check_old_index()'
34 * @failure_mode: failure mode for recovery testing
35 * @fail_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls
36 * @fail_timeout: time in jiffies when delay of failure mode expires
37 * @fail_cnt: current number of calls to failure mode I/O functions
38 * @fail_cnt_max: number of calls by which to delay failure mode
39 * @chk_lpt_sz: used by LPT tree size checker
40 * @chk_lpt_sz2: used by LPT tree size checker
41 * @chk_lpt_wastage: used by LPT tree size checker
42 * @chk_lpt_lebs: used by LPT tree size checker
43 * @new_nhead_offs: used by LPT tree size checker
44 * @new_ihead_lnum: used by debugging to check @c->ihead_lnum
45 * @new_ihead_offs: used by debugging to check @c->ihead_offs
47 * @saved_lst: saved lprops statistics (used by 'dbg_save_space_info()')
48 * @saved_free: saved free space (used by 'dbg_save_space_info()')
50 * dfs_dir_name: name of debugfs directory containing this file-system's files
51 * dfs_dir: direntry object of the file-system debugfs directory
52 * dfs_dump_lprops: "dump lprops" debugfs knob
53 * dfs_dump_budg: "dump budgeting information" debugfs knob
54 * dfs_dump_tnc: "dump TNC" debugfs knob
56 struct ubifs_debug_info {
58 struct ubifs_zbranch old_zroot;
60 unsigned long long old_zroot_sqnum;
63 unsigned long fail_timeout;
64 unsigned int fail_cnt;
65 unsigned int fail_cnt_max;
67 long long chk_lpt_sz2;
68 long long chk_lpt_wastage;
74 struct ubifs_lp_stats saved_lst;
77 char dfs_dir_name[100];
78 struct dentry *dfs_dir;
79 struct dentry *dfs_dump_lprops;
80 struct dentry *dfs_dump_budg;
81 struct dentry *dfs_dump_tnc;
84 #define UBIFS_DBG(op) op
86 #define ubifs_assert(expr) do { \
87 if (unlikely(!(expr))) { \
88 printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
89 __func__, __LINE__, 0); \
94 #define ubifs_assert_cmt_locked(c) do { \
95 if (unlikely(down_write_trylock(&(c)->commit_sem))) { \
96 up_write(&(c)->commit_sem); \
97 printk(KERN_CRIT "commit lock is not locked!\n"); \
102 #define dbg_dump_stack() do { \
103 if (!dbg_failure_mode) \
107 /* Generic debugging messages */
108 #define dbg_msg(fmt, ...) do { \
109 spin_lock(&dbg_lock); \
110 printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", 0, \
111 __func__, ##__VA_ARGS__); \
112 spin_unlock(&dbg_lock); \
115 #define dbg_do_msg(typ, fmt, ...) do { \
116 if (ubifs_msg_flags & typ) \
117 dbg_msg(fmt, ##__VA_ARGS__); \
120 #define dbg_err(fmt, ...) do { \
121 spin_lock(&dbg_lock); \
122 ubifs_err(fmt, ##__VA_ARGS__); \
123 spin_unlock(&dbg_lock); \
126 const char *dbg_key_str0(const struct ubifs_info *c,
127 const union ubifs_key *key);
128 const char *dbg_key_str1(const struct ubifs_info *c,
129 const union ubifs_key *key);
132 * DBGKEY macros require @dbg_lock to be held, which it is in the dbg message
135 #define DBGKEY(key) dbg_key_str0(c, (key))
136 #define DBGKEY1(key) dbg_key_str1(c, (key))
138 /* General messages */
139 #define dbg_gen(fmt, ...) dbg_do_msg(UBIFS_MSG_GEN, fmt, ##__VA_ARGS__)
141 /* Additional journal messages */
142 #define dbg_jnl(fmt, ...) dbg_do_msg(UBIFS_MSG_JNL, fmt, ##__VA_ARGS__)
144 /* Additional TNC messages */
145 #define dbg_tnc(fmt, ...) dbg_do_msg(UBIFS_MSG_TNC, fmt, ##__VA_ARGS__)
147 /* Additional lprops messages */
148 #define dbg_lp(fmt, ...) dbg_do_msg(UBIFS_MSG_LP, fmt, ##__VA_ARGS__)
150 /* Additional LEB find messages */
151 #define dbg_find(fmt, ...) dbg_do_msg(UBIFS_MSG_FIND, fmt, ##__VA_ARGS__)
153 /* Additional mount messages */
154 #define dbg_mnt(fmt, ...) dbg_do_msg(UBIFS_MSG_MNT, fmt, ##__VA_ARGS__)
156 /* Additional I/O messages */
157 #define dbg_io(fmt, ...) dbg_do_msg(UBIFS_MSG_IO, fmt, ##__VA_ARGS__)
159 /* Additional commit messages */
160 #define dbg_cmt(fmt, ...) dbg_do_msg(UBIFS_MSG_CMT, fmt, ##__VA_ARGS__)
162 /* Additional budgeting messages */
163 #define dbg_budg(fmt, ...) dbg_do_msg(UBIFS_MSG_BUDG, fmt, ##__VA_ARGS__)
165 /* Additional log messages */
166 #define dbg_log(fmt, ...) dbg_do_msg(UBIFS_MSG_LOG, fmt, ##__VA_ARGS__)
168 /* Additional gc messages */
169 #define dbg_gc(fmt, ...) dbg_do_msg(UBIFS_MSG_GC, fmt, ##__VA_ARGS__)
171 /* Additional scan messages */
172 #define dbg_scan(fmt, ...) dbg_do_msg(UBIFS_MSG_SCAN, fmt, ##__VA_ARGS__)
174 /* Additional recovery messages */
175 #define dbg_rcvry(fmt, ...) dbg_do_msg(UBIFS_MSG_RCVRY, fmt, ##__VA_ARGS__)
178 * Debugging message type flags (must match msg_type_names in debug.c).
180 * UBIFS_MSG_GEN: general messages
181 * UBIFS_MSG_JNL: journal messages
182 * UBIFS_MSG_MNT: mount messages
183 * UBIFS_MSG_CMT: commit messages
184 * UBIFS_MSG_FIND: LEB find messages
185 * UBIFS_MSG_BUDG: budgeting messages
186 * UBIFS_MSG_GC: garbage collection messages
187 * UBIFS_MSG_TNC: TNC messages
188 * UBIFS_MSG_LP: lprops messages
189 * UBIFS_MSG_IO: I/O messages
190 * UBIFS_MSG_LOG: log messages
191 * UBIFS_MSG_SCAN: scan messages
192 * UBIFS_MSG_RCVRY: recovery messages
199 UBIFS_MSG_FIND = 0x10,
200 UBIFS_MSG_BUDG = 0x20,
202 UBIFS_MSG_TNC = 0x80,
203 UBIFS_MSG_LP = 0x100,
204 UBIFS_MSG_IO = 0x200,
205 UBIFS_MSG_LOG = 0x400,
206 UBIFS_MSG_SCAN = 0x800,
207 UBIFS_MSG_RCVRY = 0x1000,
210 /* Debugging message type flags for each default debug message level */
211 #define UBIFS_MSG_LVL_0 0
212 #define UBIFS_MSG_LVL_1 0x1
213 #define UBIFS_MSG_LVL_2 0x7f
214 #define UBIFS_MSG_LVL_3 0xffff
217 * Debugging check flags (must match chk_names in debug.c).
219 * UBIFS_CHK_GEN: general checks
220 * UBIFS_CHK_TNC: check TNC
221 * UBIFS_CHK_IDX_SZ: check index size
222 * UBIFS_CHK_ORPH: check orphans
223 * UBIFS_CHK_OLD_IDX: check the old index
224 * UBIFS_CHK_LPROPS: check lprops
225 * UBIFS_CHK_FS: check the file-system
230 UBIFS_CHK_IDX_SZ = 0x4,
231 UBIFS_CHK_ORPH = 0x8,
232 UBIFS_CHK_OLD_IDX = 0x10,
233 UBIFS_CHK_LPROPS = 0x20,
238 * Special testing flags (must match tst_names in debug.c).
240 * UBIFS_TST_FORCE_IN_THE_GAPS: force the use of in-the-gaps method
241 * UBIFS_TST_RCVRY: failure mode for recovery testing
244 UBIFS_TST_FORCE_IN_THE_GAPS = 0x2,
245 UBIFS_TST_RCVRY = 0x4,
248 #if CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 1
249 #define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_1
250 #elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 2
251 #define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_2
252 #elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 3
253 #define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_3
255 #define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_0
258 #ifdef CONFIG_UBIFS_FS_DEBUG_CHKS
259 #define UBIFS_CHK_FLAGS_DEFAULT 0xffffffff
261 #define UBIFS_CHK_FLAGS_DEFAULT 0
264 #define dbg_ntype(type) ""
265 #define dbg_cstate(cmt_state) ""
266 #define dbg_get_key_dump(c, key) ({})
267 #define dbg_dump_inode(c, inode) ({})
268 #define dbg_dump_node(c, node) ({})
269 #define dbg_dump_budget_req(req) ({})
270 #define dbg_dump_lstats(lst) ({})
271 #define dbg_dump_budg(c) ({})
272 #define dbg_dump_lprop(c, lp) ({})
273 #define dbg_dump_lprops(c) ({})
274 #define dbg_dump_lpt_info(c) ({})
275 #define dbg_dump_leb(c, lnum) ({})
276 #define dbg_dump_znode(c, znode) ({})
277 #define dbg_dump_heap(c, heap, cat) ({})
278 #define dbg_dump_pnode(c, pnode, parent, iip) ({})
279 #define dbg_dump_tnc(c) ({})
280 #define dbg_dump_index(c) ({})
282 #define dbg_walk_index(c, leaf_cb, znode_cb, priv) 0
283 #define dbg_old_index_check_init(c, zroot) 0
284 #define dbg_check_old_index(c, zroot) 0
285 #define dbg_check_cats(c) 0
286 #define dbg_check_ltab(c) 0
287 #define dbg_chk_lpt_free_spc(c) 0
288 #define dbg_chk_lpt_sz(c, action, len) 0
289 #define dbg_check_synced_i_size(inode) 0
290 #define dbg_check_dir_size(c, dir) 0
291 #define dbg_check_tnc(c, x) 0
292 #define dbg_check_idx_size(c, idx_size) 0
293 #define dbg_check_filesystem(c) 0
294 #define dbg_check_heap(c, heap, cat, add_pos) ({})
295 #define dbg_check_lprops(c) 0
296 #define dbg_check_lpt_nodes(c, cnode, row, col) 0
297 #define dbg_force_in_the_gaps_enabled 0
298 #define dbg_force_in_the_gaps() 0
299 #define dbg_failure_mode 0
300 #define dbg_failure_mode_registration(c) ({})
301 #define dbg_failure_mode_deregistration(c) ({})
303 int ubifs_debugging_init(struct ubifs_info *c);
304 void ubifs_debugging_exit(struct ubifs_info *c);
306 #else /* !CONFIG_UBIFS_FS_DEBUG */
308 #define UBIFS_DBG(op)
310 /* Use "if (0)" to make compiler check arguments even if debugging is off */
311 #define ubifs_assert(expr) do { \
313 printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
314 __func__, __LINE__, 0); \
317 #define dbg_err(fmt, ...) do { \
319 ubifs_err(fmt, ##__VA_ARGS__); \
322 #define dbg_msg(fmt, ...) do { \
324 printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", \
325 0, __func__, ##__VA_ARGS__); \
328 #define dbg_dump_stack()
329 #define ubifs_assert_cmt_locked(c)
331 #define dbg_gen(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
332 #define dbg_jnl(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
333 #define dbg_tnc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
334 #define dbg_lp(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
335 #define dbg_find(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
336 #define dbg_mnt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
337 #define dbg_io(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
338 #define dbg_cmt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
339 #define dbg_budg(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
340 #define dbg_log(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
341 #define dbg_gc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
342 #define dbg_scan(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
343 #define dbg_rcvry(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
345 #define DBGKEY(key) ((char *)(key))
346 #define DBGKEY1(key) ((char *)(key))
348 #define ubifs_debugging_init(c) 0
349 #define ubifs_debugging_exit(c) ({})
351 #define dbg_ntype(type) ""
352 #define dbg_cstate(cmt_state) ""
353 #define dbg_get_key_dump(c, key) ({})
354 #define dbg_dump_inode(c, inode) ({})
355 #define dbg_dump_node(c, node) ({})
356 #define dbg_dump_budget_req(req) ({})
357 #define dbg_dump_lstats(lst) ({})
358 #define dbg_dump_budg(c) ({})
359 #define dbg_dump_lprop(c, lp) ({})
360 #define dbg_dump_lprops(c) ({})
361 #define dbg_dump_lpt_info(c) ({})
362 #define dbg_dump_leb(c, lnum) ({})
363 #define dbg_dump_znode(c, znode) ({})
364 #define dbg_dump_heap(c, heap, cat) ({})
365 #define dbg_dump_pnode(c, pnode, parent, iip) ({})
366 #define dbg_dump_tnc(c) ({})
367 #define dbg_dump_index(c) ({})
369 #define dbg_walk_index(c, leaf_cb, znode_cb, priv) 0
370 #define dbg_old_index_check_init(c, zroot) 0
371 #define dbg_check_old_index(c, zroot) 0
372 #define dbg_check_cats(c) 0
373 #define dbg_check_ltab(c) 0
374 #define dbg_chk_lpt_free_spc(c) 0
375 #define dbg_chk_lpt_sz(c, action, len) 0
376 #define dbg_check_synced_i_size(inode) 0
377 #define dbg_check_dir_size(c, dir) 0
378 #define dbg_check_tnc(c, x) 0
379 #define dbg_check_idx_size(c, idx_size) 0
380 #define dbg_check_filesystem(c) 0
381 #define dbg_check_heap(c, heap, cat, add_pos) ({})
382 #define dbg_check_lprops(c) 0
383 #define dbg_check_lpt_nodes(c, cnode, row, col) 0
384 #define dbg_force_in_the_gaps_enabled 0
385 #define dbg_force_in_the_gaps() 0
386 #define dbg_failure_mode 0
387 #define dbg_failure_mode_registration(c) ({})
388 #define dbg_failure_mode_deregistration(c) ({})
390 #endif /* !CONFIG_UBIFS_FS_DEBUG */
392 #endif /* !__UBIFS_DEBUG_H__ */