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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2011-05-18 14:53:05 +0300
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2011-06-01 11:21:47 +0300
commit2a734bb8d502b645c061fa329e87c5d651498e68 (patch)
treed87ee3ddd7c5ccee224044e2178aaf131407b91a /drivers/mtd/ubi/debug.h
parentd99383b00eba9c6ac3dea462d718b2849012ee03 (diff)
downloadop-kernel-dev-2a734bb8d502b645c061fa329e87c5d651498e68.zip
op-kernel-dev-2a734bb8d502b645c061fa329e87c5d651498e68.tar.gz
UBI: use debugfs for the extra checks knobs
This patch introduces debugfs support to UBI. All the UBI stuff is kept in the "ubi" debugfs directory, which contains per-UBI device "ubi/ubiX" sub-directories, containing debugging files. This file also creates "ubi/ubiX/chk_gen" and "ubi/ubiX/chk_io" knobs for switching general and I/O extra checks on and off. And it removes the 'debug_chks' UBI module parameters. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi/debug.h')
-rw-r--r--drivers/mtd/ubi/debug.h59
1 files changed, 42 insertions, 17 deletions
diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h
index 3f1a09c..cb6c879 100644
--- a/drivers/mtd/ubi/debug.h
+++ b/drivers/mtd/ubi/debug.h
@@ -71,24 +71,42 @@ 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);
-
-extern unsigned int ubi_chk_flags;
+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);
/*
- * Debugging check flags.
+ * 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.
*
- * UBI_CHK_GEN: general checks
- * UBI_CHK_IO: check writes and erases
+ * @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
*/
-enum {
- UBI_CHK_GEN = 0x1,
- UBI_CHK_IO = 0x2,
+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;
};
-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);
-
extern unsigned int ubi_tst_flags;
/*
@@ -201,11 +219,6 @@ static inline void ubi_dbg_dump_flash(struct ubi_device *ubi,
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_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; }
static inline int ubi_dbg_check_all_ff(struct ubi_device *ubi,
int pnum, int offset,
int len) { return 0; }
@@ -213,5 +226,17 @@ 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__ */
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