#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>
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;
-
-/*
- * Debugging check flags.
- *
- * UBI_CHK_GEN: general checks
- * UBI_CHK_IO: check writes and erases
- */
-enum {
- UBI_CHK_GEN = 0x1,
- UBI_CHK_IO = 0x2,
-};
-
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;
+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);
/*
- * Special testing 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.
*
- * 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
+ * @chk_gen: if UBI general extra checks are enabled
+ * @chk_io: if UBI I/O extra checks are enabled
+ * @disable_bgt: disable the background task for testing purposes
+ * @emulate_bitflips: emulate bit-flips for testing purposes
+ * @emulate_io_failures: emulate write/erase failures for testing purposes
+ * @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
+ * @dfs_disable_bgt: debugfs knob to disable the background task
+ * @dfs_emulate_bitflips: debugfs knob to emulate bit-flips
+ * @dfs_emulate_io_failures: debugfs knob to emulate write/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,
+struct ubi_debug_info {
+ unsigned int chk_gen:1;
+ unsigned int chk_io:1;
+ unsigned int disable_bgt:1;
+ unsigned int emulate_bitflips:1;
+ unsigned int emulate_io_failures:1;
+ char dfs_dir_name[UBI_DFS_DIR_LEN + 1];
+ struct dentry *dfs_dir;
+ struct dentry *dfs_chk_gen;
+ struct dentry *dfs_chk_io;
+ struct dentry *dfs_disable_bgt;
+ struct dentry *dfs_emulate_bitflips;
+ struct dentry *dfs_emulate_io_failures;
};
/**
* ubi_dbg_is_bgt_disabled - if the background thread is disabled.
+ * @ubi: UBI device description object
*
* Returns non-zero if the UBI background thread is disabled for testing
* purposes.
*/
-static inline int ubi_dbg_is_bgt_disabled(void)
+static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi)
{
- return ubi_tst_flags & UBI_TST_DISABLE_BGT;
+ return ubi->dbg->disable_bgt;
}
/**
* ubi_dbg_is_bitflip - if it is time to emulate a bit-flip.
+ * @ubi: UBI device description object
*
* Returns non-zero if a bit-flip should be emulated, otherwise returns zero.
*/
-static inline int ubi_dbg_is_bitflip(void)
+static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
{
- if (ubi_tst_flags & UBI_TST_EMULATE_BITFLIPS)
+ if (ubi->dbg->emulate_bitflips)
return !(random32() % 200);
return 0;
}
/**
* ubi_dbg_is_write_failure - if it is time to emulate a write failure.
+ * @ubi: UBI device description object
*
* Returns non-zero if a write failure should be emulated, otherwise returns
* zero.
*/
-static inline int ubi_dbg_is_write_failure(void)
+static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
{
- if (ubi_tst_flags & UBI_TST_EMULATE_WRITE_FAILURES)
+ if (ubi->dbg->emulate_io_failures)
return !(random32() % 500);
return 0;
}
/**
* ubi_dbg_is_erase_failure - if its time to emulate an erase failure.
+ * @ubi: UBI device description object
*
* Returns non-zero if an erase failure should be emulated, otherwise returns
* zero.
*/
-static inline int ubi_dbg_is_erase_failure(void)
+static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi)
{
- if (ubi_tst_flags & UBI_TST_EMULATE_ERASE_FAILURES)
+ if (ubi->dbg->emulate_io_failures)
return !(random32() % 400);
return 0;
}
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; }
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(const struct ubi_device *ubi) { return 0; }
+static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi) { return 0; }
+static inline int
+ubi_dbg_is_write_failure(const struct ubi_device *ubi) { return 0; }
+static inline int
+ubi_dbg_is_erase_failure(const struct ubi_device *ubi) { return 0; }
+
#endif /* !CONFIG_MTD_UBI_DEBUG */
#endif /* !__UBI_DEBUG_H__ */
git.openpandora.org / pandora-kernel.git / blobdiff