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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2011-05-18 09:21:43 -0400
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2011-06-01 04:23:12 -0400
commitcd6d8567a42907d4e7add0b08f9a2d846690fc65 (patch)
treec86567ce86f98b01c0c150d8fe6625321c8de93c /drivers/mtd/ubi/debug.h
parent18073733247dc0c31e07f3a87f3267fe8d7e7022 (diff)
UBI: switch debugging tests knobs to debugfs
Kill the UBI 'debug_tsts' module parameter and switch to debugfs. Create per-test mode files there. E.g., to enable bit-flips emulation you may just do: echo 1 > /sys/kernel/debug/ubi/ubi0/tst_emulate_bitflips Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi/debug.h')
-rw-r--r--drivers/mtd/ubi/debug.h37
1 files changed, 16 insertions, 21 deletions
diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h
index ef97c12fe9b8..65b5b76cc379 100644
--- a/drivers/mtd/ubi/debug.h
+++ b/drivers/mtd/ubi/debug.h
@@ -85,35 +85,30 @@ void ubi_debugfs_exit_dev(struct ubi_device *ubi);
85 * 85 *
86 * @chk_gen: if UBI general extra checks are enabled 86 * @chk_gen: if UBI general extra checks are enabled
87 * @chk_io: if UBI I/O extra checks are enabled 87 * @chk_io: if UBI I/O extra checks are enabled
88 * @disable_bgt: disable the background task for testing purposes
89 * @emulate_bitflips: emulate bit-flips for testing purposes
90 * @emulate_io_failures: emulate write/erase failures for testing purposes
88 * @dfs_dir_name: name of debugfs directory containing files of this UBI device 91 * @dfs_dir_name: name of debugfs directory containing files of this UBI device
89 * @dfs_dir: direntry object of the UBI device debugfs directory 92 * @dfs_dir: direntry object of the UBI device debugfs directory
90 * @dfs_chk_gen: debugfs knob to enable UBI general extra checks 93 * @dfs_chk_gen: debugfs knob to enable UBI general extra checks
91 * @dfs_chk_io: debugfs knob to enable UBI I/O extra checks 94 * @dfs_chk_io: debugfs knob to enable UBI I/O extra checks
95 * @dfs_disable_bgt: debugfs knob to disable the background task
96 * @dfs_emulate_bitflips: debugfs knob to emulate bit-flips
97 * @dfs_emulate_io_failures: debugfs knob to emulate write/erase failures
92 */ 98 */
93struct ubi_debug_info { 99struct ubi_debug_info {
94 unsigned int chk_gen:1; 100 unsigned int chk_gen:1;
95 unsigned int chk_io:1; 101 unsigned int chk_io:1;
102 unsigned int disable_bgt:1;
103 unsigned int emulate_bitflips:1;
104 unsigned int emulate_io_failures:1;
96 char dfs_dir_name[UBI_DFS_DIR_LEN + 1]; 105 char dfs_dir_name[UBI_DFS_DIR_LEN + 1];
97 struct dentry *dfs_dir; 106 struct dentry *dfs_dir;
98 struct dentry *dfs_chk_gen; 107 struct dentry *dfs_chk_gen;
99 struct dentry *dfs_chk_io; 108 struct dentry *dfs_chk_io;
100}; 109 struct dentry *dfs_disable_bgt;
101 110 struct dentry *dfs_emulate_bitflips;
102extern unsigned int ubi_tst_flags; 111 struct dentry *dfs_emulate_io_failures;
103
104/*
105 * Special testing flags.
106 *
107 * UBIFS_TST_DISABLE_BGT: disable the background thread
108 * UBI_TST_EMULATE_BITFLIPS: emulate bit-flips
109 * UBI_TST_EMULATE_WRITE_FAILURES: emulate write failures
110 * UBI_TST_EMULATE_ERASE_FAILURES: emulate erase failures
111 */
112enum {
113 UBI_TST_DISABLE_BGT = 0x1,
114 UBI_TST_EMULATE_BITFLIPS = 0x2,
115 UBI_TST_EMULATE_WRITE_FAILURES = 0x4,
116 UBI_TST_EMULATE_ERASE_FAILURES = 0x8,
117}; 112};
118 113
119/** 114/**
@@ -125,7 +120,7 @@ enum {
125 */ 120 */
126static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi) 121static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi)
127{ 122{
128 return ubi_tst_flags & UBI_TST_DISABLE_BGT; 123 return ubi->dbg->disable_bgt;
129} 124}
130 125
131/** 126/**
@@ -136,7 +131,7 @@ static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi)
136 */ 131 */
137static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi) 132static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
138{ 133{
139 if (ubi_tst_flags & UBI_TST_EMULATE_BITFLIPS) 134 if (ubi->dbg->emulate_bitflips)
140 return !(random32() % 200); 135 return !(random32() % 200);
141 return 0; 136 return 0;
142} 137}
@@ -150,7 +145,7 @@ static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
150 */ 145 */
151static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi) 146static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
152{ 147{
153 if (ubi_tst_flags & UBI_TST_EMULATE_WRITE_FAILURES) 148 if (ubi->dbg->emulate_io_failures)
154 return !(random32() % 500); 149 return !(random32() % 500);
155 return 0; 150 return 0;
156} 151}
@@ -164,7 +159,7 @@ static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
164 */ 159 */
165static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi) 160static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi)
166{ 161{
167 if (ubi_tst_flags & UBI_TST_EMULATE_ERASE_FAILURES) 162 if (ubi->dbg->emulate_io_failures)
168 return !(random32() % 400); 163 return !(random32() % 400);
169 return 0; 164 return 0;
170} 165}