1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
/*
* Copyright (c) International Business Machines Corp., 2006
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Artem Bityutskiy (Битюцкий Артём)
*/
#ifndef __UBI_DEBUG_H__
#define __UBI_DEBUG_H__
struct ubi_ec_hdr;
struct ubi_vid_hdr;
struct ubi_volume;
struct ubi_vtbl_record;
struct ubi_scan_volume;
struct ubi_scan_leb;
struct ubi_mkvol_req;
#ifdef CONFIG_MTD_UBI_DEBUG
#include <linux/random.h>
#define ubi_assert(expr) do { \
if (unlikely(!(expr))) { \
printk(KERN_CRIT "UBI assert failed in %s at %u (pid %d)\n", \
__func__, __LINE__, current->pid); \
ubi_dbg_dump_stack(); \
} \
} while (0)
#define dbg_err(fmt, ...) ubi_err(fmt, ##__VA_ARGS__)
#define ubi_dbg_dump_stack() dump_stack()
#define ubi_dbg_print_hex_dump(l, ps, pt, r, g, b, len, a) \
print_hex_dump(l, ps, pt, r, g, b, len, a)
#define ubi_dbg_msg(type, fmt, ...) \
pr_debug("UBI DBG " type ": " fmt "\n", ##__VA_ARGS__)
/* Just a debugging messages not related to any specific UBI subsystem */
#define dbg_msg(fmt, ...) ubi_dbg_msg("msg", fmt, ##__VA_ARGS__)
/* General debugging messages */
#define dbg_gen(fmt, ...) ubi_dbg_msg("gen", fmt, ##__VA_ARGS__)
/* Messages from the eraseblock association sub-system */
#define dbg_eba(fmt, ...) ubi_dbg_msg("eba", fmt, ##__VA_ARGS__)
/* Messages from the wear-leveling sub-system */
#define dbg_wl(fmt, ...) ubi_dbg_msg("wl", fmt, ##__VA_ARGS__)
/* Messages from the input/output sub-system */
#define dbg_io(fmt, ...) ubi_dbg_msg("io", fmt, ##__VA_ARGS__)
/* Initialization and build messages */
#define dbg_bld(fmt, ...) ubi_dbg_msg("bld", fmt, ##__VA_ARGS__)
void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr);
void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr);
void ubi_dbg_dump_vol_info(const struct ubi_volume *vol);
void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx);
void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv);
void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type);
void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req);
void ubi_dbg_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len);
int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len);
int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum,
int offset, int len);
int ubi_debugging_init_dev(struct ubi_device *ubi);
void ubi_debugging_exit_dev(struct ubi_device *ubi);
int ubi_debugfs_init(void);
void ubi_debugfs_exit(void);
int ubi_debugfs_init_dev(struct ubi_device *ubi);
void ubi_debugfs_exit_dev(struct ubi_device *ubi);
/*
* The UBI debugfs directory name pattern and maximum name length (3 for "ubi"
* + 2 for the number plus 1 for the trailing zero byte.
*/
#define UBI_DFS_DIR_NAME "ubi%d"
#define UBI_DFS_DIR_LEN (3 + 2 + 1)
/**
* struct ubi_debug_info - debugging information for an UBI device.
*
* @chk_gen: if UBI general extra checks are enabled
* @chk_io: if UBI I/O extra checks are enabled
* @dfs_dir_name: name of debugfs directory containing files of this UBI device
* @dfs_dir: direntry object of the UBI device debugfs directory
* @dfs_chk_gen: debugfs knob to enable UBI general extra checks
* @dfs_chk_io: debugfs knob to enable UBI I/O extra checks
*/
struct ubi_debug_info {
unsigned int chk_gen:1;
unsigned int chk_io:1;
char dfs_dir_name[UBI_DFS_DIR_LEN + 1];
struct dentry *dfs_dir;
struct dentry *dfs_chk_gen;
struct dentry *dfs_chk_io;
};
extern unsigned int ubi_tst_flags;
/*
* Special testing flags.
*
* UBIFS_TST_DISABLE_BGT: disable the background thread
* UBI_TST_EMULATE_BITFLIPS: emulate bit-flips
* UBI_TST_EMULATE_WRITE_FAILURES: emulate write failures
* UBI_TST_EMULATE_ERASE_FAILURES: emulate erase failures
*/
enum {
UBI_TST_DISABLE_BGT = 0x1,
UBI_TST_EMULATE_BITFLIPS = 0x2,
UBI_TST_EMULATE_WRITE_FAILURES = 0x4,
UBI_TST_EMULATE_ERASE_FAILURES = 0x8,
};
/**
* ubi_dbg_is_bgt_disabled - if the background thread is disabled.
*
* Returns non-zero if the UBI background thread is disabled for testing
* purposes.
*/
static inline int ubi_dbg_is_bgt_disabled(void)
{
return ubi_tst_flags & UBI_TST_DISABLE_BGT;
}
/**
* ubi_dbg_is_bitflip - if it is time to emulate a bit-flip.
*
* Returns non-zero if a bit-flip should be emulated, otherwise returns zero.
*/
static inline int ubi_dbg_is_bitflip(void)
{
if (ubi_tst_flags & UBI_TST_EMULATE_BITFLIPS)
return !(random32() % 200);
return 0;
}
/**
* ubi_dbg_is_write_failure - if it is time to emulate a write failure.
*
* Returns non-zero if a write failure should be emulated, otherwise returns
* zero.
*/
static inline int ubi_dbg_is_write_failure(void)
{
if (ubi_tst_flags & UBI_TST_EMULATE_WRITE_FAILURES)
return !(random32() % 500);
return 0;
}
/**
* ubi_dbg_is_erase_failure - if its time to emulate an erase failure.
*
* Returns non-zero if an erase failure should be emulated, otherwise returns
* zero.
*/
static inline int ubi_dbg_is_erase_failure(void)
{
if (ubi_tst_flags & UBI_TST_EMULATE_ERASE_FAILURES)
return !(random32() % 400);
return 0;
}
#else
/* Use "if (0)" to make compiler check arguments even if debugging is off */
#define ubi_assert(expr) do { \
if (0) { \
printk(KERN_CRIT "UBI assert failed in %s at %u (pid %d)\n", \
__func__, __LINE__, current->pid); \
} \
} while (0)
#define dbg_err(fmt, ...) do { \
if (0) \
ubi_err(fmt, ##__VA_ARGS__); \
} while (0)
#define ubi_dbg_msg(fmt, ...) do { \
if (0) \
pr_debug(fmt "\n", ##__VA_ARGS__); \
} while (0)
#define dbg_msg(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_gen(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_eba(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_wl(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_io(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_bld(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
static inline void ubi_dbg_dump_stack(void) { return; }
static inline void
ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr) { return; }
static inline void
ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr) { return; }
static inline void
ubi_dbg_dump_vol_info(const struct ubi_volume *vol) { return; }
static inline void
ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx) { return; }
static inline void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv) { return; }
static inline void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb,
int type) { return; }
static inline void
ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req) { return; }
static inline void ubi_dbg_dump_flash(struct ubi_device *ubi,
int pnum, int offset, int len) { return; }
static inline void
ubi_dbg_print_hex_dump(const char *l, const char *ps, int pt, int r,
int g, const void *b, size_t len, bool a) { return; }
static inline int ubi_dbg_check_all_ff(struct ubi_device *ubi,
int pnum, int offset,
int len) { return 0; }
static inline int ubi_dbg_check_write(struct ubi_device *ubi,
const void *buf, int pnum,
int offset, int len) { return 0; }
static inline int ubi_debugging_init_dev(struct ubi_device *ubi) { return 0; }
static inline void ubi_debugging_exit_dev(struct ubi_device *ubi) { return; }
static inline int ubi_debugfs_init(void) { return 0; }
static inline void ubi_debugfs_exit(void) { return; }
static inline int ubi_debugfs_init_dev(struct ubi_device *ubi) { return 0; }
static inline void ubi_debugfs_exit_dev(struct ubi_device *ubi) { return; }
static inline int ubi_dbg_is_bgt_disabled(void) { return 0; }
static inline int ubi_dbg_is_bitflip(void) { return 0; }
static inline int ubi_dbg_is_write_failure(void) { return 0; }
static inline int ubi_dbg_is_erase_failure(void) { return 0; }
#endif /* !CONFIG_MTD_UBI_DEBUG */
#endif /* !__UBI_DEBUG_H__ */
|
