2 * Copyright (c) International Business Machines Corp., 2006
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
12 * the GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 * Author: Artem Bityutskiy (Битюцкий Артём)
21 #ifndef __UBI_DEBUG_H__
22 #define __UBI_DEBUG_H__
24 #ifdef CONFIG_MTD_UBI_DEBUG
25 #include <linux/random.h>
27 #define dbg_err(fmt, ...) ubi_err(fmt, ##__VA_ARGS__)
29 #define ubi_assert(expr) do { \
30 if (unlikely(!(expr))) { \
31 printk(KERN_CRIT "UBI assert failed in %s at %u (pid %d)\n", \
32 __func__, __LINE__, current->pid); \
33 ubi_dbg_dump_stack(); \
37 #define dbg_msg(fmt, ...) \
38 printk(KERN_DEBUG "UBI DBG (pid %d): %s: " fmt "\n", \
39 current->pid, __func__, ##__VA_ARGS__)
41 #define ubi_dbg_dump_stack() dump_stack()
46 struct ubi_vtbl_record;
47 struct ubi_scan_volume;
51 void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr);
52 void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr);
53 void ubi_dbg_dump_vol_info(const struct ubi_volume *vol);
54 void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx);
55 void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv);
56 void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type);
57 void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req);
59 #ifdef CONFIG_MTD_UBI_DEBUG_MSG
60 /* General debugging messages */
61 #define dbg_gen(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
63 #define dbg_gen(fmt, ...) ({})
66 #ifdef CONFIG_MTD_UBI_DEBUG_MSG_EBA
67 /* Messages from the eraseblock association sub-system */
68 #define dbg_eba(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
70 #define dbg_eba(fmt, ...) ({})
73 #ifdef CONFIG_MTD_UBI_DEBUG_MSG_WL
74 /* Messages from the wear-leveling sub-system */
75 #define dbg_wl(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
77 #define dbg_wl(fmt, ...) ({})
80 #ifdef CONFIG_MTD_UBI_DEBUG_MSG_IO
81 /* Messages from the input/output sub-system */
82 #define dbg_io(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
84 #define dbg_io(fmt, ...) ({})
87 #ifdef CONFIG_MTD_UBI_DEBUG_MSG_BLD
88 /* Initialization and build messages */
89 #define dbg_bld(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
90 #define UBI_IO_DEBUG 1
92 #define dbg_bld(fmt, ...) ({})
93 #define UBI_IO_DEBUG 0
96 #ifdef CONFIG_MTD_UBI_DEBUG_DISABLE_BGT
97 #define DBG_DISABLE_BGT 1
99 #define DBG_DISABLE_BGT 0
102 #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_BITFLIPS
104 * ubi_dbg_is_bitflip - if it is time to emulate a bit-flip.
106 * Returns non-zero if a bit-flip should be emulated, otherwise returns zero.
108 static inline int ubi_dbg_is_bitflip(void)
110 return !(random32() % 200);
113 #define ubi_dbg_is_bitflip() 0
116 #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_WRITE_FAILURES
118 * ubi_dbg_is_write_failure - if it is time to emulate a write failure.
120 * Returns non-zero if a write failure should be emulated, otherwise returns
123 static inline int ubi_dbg_is_write_failure(void)
125 return !(random32() % 500);
128 #define ubi_dbg_is_write_failure() 0
131 #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_ERASE_FAILURES
133 * ubi_dbg_is_erase_failure - if its time to emulate an erase failure.
135 * Returns non-zero if an erase failure should be emulated, otherwise returns
138 static inline int ubi_dbg_is_erase_failure(void)
140 return !(random32() % 400);
143 #define ubi_dbg_is_erase_failure() 0
148 #define ubi_assert(expr) ({})
149 #define dbg_err(fmt, ...) ({})
150 #define dbg_msg(fmt, ...) ({})
151 #define dbg_gen(fmt, ...) ({})
152 #define dbg_eba(fmt, ...) ({})
153 #define dbg_wl(fmt, ...) ({})
154 #define dbg_io(fmt, ...) ({})
155 #define dbg_bld(fmt, ...) ({})
156 #define ubi_dbg_dump_stack() ({})
157 #define ubi_dbg_dump_ec_hdr(ec_hdr) ({})
158 #define ubi_dbg_dump_vid_hdr(vid_hdr) ({})
159 #define ubi_dbg_dump_vol_info(vol) ({})
160 #define ubi_dbg_dump_vtbl_record(r, idx) ({})
161 #define ubi_dbg_dump_sv(sv) ({})
162 #define ubi_dbg_dump_seb(seb, type) ({})
163 #define ubi_dbg_dump_mkvol_req(req) ({})
165 #define UBI_IO_DEBUG 0
166 #define DBG_DISABLE_BGT 0
167 #define ubi_dbg_is_bitflip() 0
168 #define ubi_dbg_is_write_failure() 0
169 #define ubi_dbg_is_erase_failure() 0
171 #endif /* !CONFIG_MTD_UBI_DEBUG */
172 #endif /* !__UBI_DEBUG_H__ */