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gerrit.cesnet.cz / github / trini / u-boot / c84f9e0d42c499647b3cfbb6358d601b61a6b4cd / . / fs / ubifs / debug.h
blob: 62617b69270cac34bc0c4bd267eddd3b6fcb3dcd [file] [log] [blame]
Stefan Roese9eefe2a2009-03-19 15:35:05 +0100[diff] [blame]1/*
2 * This file is part of UBIFS.
3 *
4 * Copyright (C) 2006-2008 Nokia Corporation.
5 *
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.
9 *
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
13 * more details.
14 *
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
18 *
19 * Authors: Artem Bityutskiy (Битюцкий Артём)
20 * Adrian Hunter
21 */
22
23#ifndef __UBIFS_DEBUG_H__
24#define __UBIFS_DEBUG_H__
25
26#ifdef CONFIG_UBIFS_FS_DEBUG
27
28/**
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
46 *
47 * @saved_lst: saved lprops statistics (used by 'dbg_save_space_info()')
48 * @saved_free: saved free space (used by 'dbg_save_space_info()')
49 *
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
55 */
56struct ubifs_debug_info {
57 void *buf;
58 struct ubifs_zbranch old_zroot;
59 int old_zroot_level;
60 unsigned long long old_zroot_sqnum;
61 int failure_mode;
62 int fail_delay;
63 unsigned long fail_timeout;
64 unsigned int fail_cnt;
65 unsigned int fail_cnt_max;
66 long long chk_lpt_sz;
67 long long chk_lpt_sz2;
68 long long chk_lpt_wastage;
69 int chk_lpt_lebs;
70 int new_nhead_offs;
71 int new_ihead_lnum;
72 int new_ihead_offs;
73
74 struct ubifs_lp_stats saved_lst;
75 long long saved_free;
76
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;
82};
83
84#define UBIFS_DBG(op) op
85
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); \
90 dbg_dump_stack(); \
91 } \
92} while (0)
93
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"); \
98 ubifs_assert(0); \
99 } \
100} while (0)
101
102#define dbg_dump_stack() do { \
103 if (!dbg_failure_mode) \
104 dump_stack(); \
105} while (0)
106
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); \
113} while (0)
114
115#define dbg_do_msg(typ, fmt, ...) do { \
116 if (ubifs_msg_flags & typ) \
117 dbg_msg(fmt, ##__VA_ARGS__); \
118} while (0)
119
120#define dbg_err(fmt, ...) do { \
121 spin_lock(&dbg_lock); \
122 ubifs_err(fmt, ##__VA_ARGS__); \
123 spin_unlock(&dbg_lock); \
124} while (0)
125
126const char *dbg_key_str0(const struct ubifs_info *c,
127 const union ubifs_key *key);
128const char *dbg_key_str1(const struct ubifs_info *c,
129 const union ubifs_key *key);
130
131/*
132 * DBGKEY macros require @dbg_lock to be held, which it is in the dbg message
133 * macros.
134 */
135#define DBGKEY(key) dbg_key_str0(c, (key))
136#define DBGKEY1(key) dbg_key_str1(c, (key))
137
138/* General messages */
139#define dbg_gen(fmt, ...) dbg_do_msg(UBIFS_MSG_GEN, fmt, ##__VA_ARGS__)
140
141/* Additional journal messages */
142#define dbg_jnl(fmt, ...) dbg_do_msg(UBIFS_MSG_JNL, fmt, ##__VA_ARGS__)
143
144/* Additional TNC messages */
145#define dbg_tnc(fmt, ...) dbg_do_msg(UBIFS_MSG_TNC, fmt, ##__VA_ARGS__)
146
147/* Additional lprops messages */
148#define dbg_lp(fmt, ...) dbg_do_msg(UBIFS_MSG_LP, fmt, ##__VA_ARGS__)
149
150/* Additional LEB find messages */
151#define dbg_find(fmt, ...) dbg_do_msg(UBIFS_MSG_FIND, fmt, ##__VA_ARGS__)
152
153/* Additional mount messages */
154#define dbg_mnt(fmt, ...) dbg_do_msg(UBIFS_MSG_MNT, fmt, ##__VA_ARGS__)
155
156/* Additional I/O messages */
157#define dbg_io(fmt, ...) dbg_do_msg(UBIFS_MSG_IO, fmt, ##__VA_ARGS__)
158
159/* Additional commit messages */
160#define dbg_cmt(fmt, ...) dbg_do_msg(UBIFS_MSG_CMT, fmt, ##__VA_ARGS__)
161
162/* Additional budgeting messages */
163#define dbg_budg(fmt, ...) dbg_do_msg(UBIFS_MSG_BUDG, fmt, ##__VA_ARGS__)
164
165/* Additional log messages */
166#define dbg_log(fmt, ...) dbg_do_msg(UBIFS_MSG_LOG, fmt, ##__VA_ARGS__)
167
168/* Additional gc messages */
169#define dbg_gc(fmt, ...) dbg_do_msg(UBIFS_MSG_GC, fmt, ##__VA_ARGS__)
170
171/* Additional scan messages */
172#define dbg_scan(fmt, ...) dbg_do_msg(UBIFS_MSG_SCAN, fmt, ##__VA_ARGS__)
173
174/* Additional recovery messages */
175#define dbg_rcvry(fmt, ...) dbg_do_msg(UBIFS_MSG_RCVRY, fmt, ##__VA_ARGS__)
176
177/*
178 * Debugging message type flags (must match msg_type_names in debug.c).
179 *
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
193 */
194enum {
195 UBIFS_MSG_GEN = 0x1,
196 UBIFS_MSG_JNL = 0x2,
197 UBIFS_MSG_MNT = 0x4,
198 UBIFS_MSG_CMT = 0x8,
199 UBIFS_MSG_FIND = 0x10,
200 UBIFS_MSG_BUDG = 0x20,
201 UBIFS_MSG_GC = 0x40,
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,
208};
209
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
215
216/*
217 * Debugging check flags (must match chk_names in debug.c).
218 *
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
226 */
227enum {
228 UBIFS_CHK_GEN = 0x1,
229 UBIFS_CHK_TNC = 0x2,
230 UBIFS_CHK_IDX_SZ = 0x4,
231 UBIFS_CHK_ORPH = 0x8,
232 UBIFS_CHK_OLD_IDX = 0x10,
233 UBIFS_CHK_LPROPS = 0x20,
234 UBIFS_CHK_FS = 0x40,
235};
236
237/*
238 * Special testing flags (must match tst_names in debug.c).
239 *
240 * UBIFS_TST_FORCE_IN_THE_GAPS: force the use of in-the-gaps method
241 * UBIFS_TST_RCVRY: failure mode for recovery testing
242 */
243enum {
244 UBIFS_TST_FORCE_IN_THE_GAPS = 0x2,
245 UBIFS_TST_RCVRY = 0x4,
246};
247
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
254#else
255#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_0
256#endif
257
258#ifdef CONFIG_UBIFS_FS_DEBUG_CHKS
259#define UBIFS_CHK_FLAGS_DEFAULT 0xffffffff
260#else
261#define UBIFS_CHK_FLAGS_DEFAULT 0
262#endif
263
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) ({})
281
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) ({})
302
303int ubifs_debugging_init(struct ubifs_info *c);
304void ubifs_debugging_exit(struct ubifs_info *c);
305
306#else /* !CONFIG_UBIFS_FS_DEBUG */
307
308#define UBIFS_DBG(op)
309
310/* Use "if (0)" to make compiler check arguments even if debugging is off */
311#define ubifs_assert(expr) do { \
312 if (0 && (expr)) \
313 printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
314 __func__, __LINE__, 0); \
315} while (0)
316
317#define dbg_err(fmt, ...) do { \
318 if (0) \
319 ubifs_err(fmt, ##__VA_ARGS__); \
320} while (0)
321
322#define dbg_msg(fmt, ...) do { \
323 if (0) \
324 printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", \
325 0, __func__, ##__VA_ARGS__); \
326} while (0)
327
328#define dbg_dump_stack()
329#define ubifs_assert_cmt_locked(c)
330
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__)
344
345#define DBGKEY(key) ((char *)(key))
346#define DBGKEY1(key) ((char *)(key))
347
348#define ubifs_debugging_init(c) 0
349#define ubifs_debugging_exit(c) ({})
350
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) ({})
368
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) ({})
389
390#endif /* !CONFIG_UBIFS_FS_DEBUG */
391
392#endif /* !__UBIFS_DEBUG_H__ */