UBI: Add initial support for fastmap self checks
Using this debugfs knob fastmap self checks can be controlled. Signed-off-by: Richard Weinberger <richard@nod.at> Reviewed-by: Tanya Brokhman <tlinder@codeaurora.org>
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@ -275,6 +275,8 @@ static ssize_t dfs_file_read(struct file *file, char __user *user_buf,
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val = d->chk_gen;
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else if (dent == d->dfs_chk_io)
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val = d->chk_io;
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else if (dent == d->dfs_chk_fastmap)
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val = d->chk_fastmap;
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else if (dent == d->dfs_disable_bgt)
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val = d->disable_bgt;
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else if (dent == d->dfs_emulate_bitflips)
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@ -336,6 +338,8 @@ static ssize_t dfs_file_write(struct file *file, const char __user *user_buf,
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d->chk_gen = val;
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else if (dent == d->dfs_chk_io)
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d->chk_io = val;
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else if (dent == d->dfs_chk_fastmap)
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d->chk_fastmap = val;
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else if (dent == d->dfs_disable_bgt)
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d->disable_bgt = val;
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else if (dent == d->dfs_emulate_bitflips)
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@ -406,6 +410,13 @@ int ubi_debugfs_init_dev(struct ubi_device *ubi)
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goto out_remove;
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d->dfs_chk_io = dent;
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fname = "chk_fastmap";
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dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
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&dfs_fops);
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if (IS_ERR_OR_NULL(dent))
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goto out_remove;
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d->dfs_chk_fastmap = dent;
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fname = "tst_disable_bgt";
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dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
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&dfs_fops);
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@ -127,4 +127,9 @@ static inline int ubi_dbg_chk_gen(const struct ubi_device *ubi)
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{
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return ubi->dbg.chk_gen;
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}
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static inline int ubi_dbg_chk_fastmap(const struct ubi_device *ubi)
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{
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return ubi->dbg.chk_fastmap;
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}
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#endif /* !__UBI_DEBUG_H__ */
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@ -356,6 +356,7 @@ struct ubi_wl_entry;
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*
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* @chk_gen: if UBI general extra checks are enabled
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* @chk_io: if UBI I/O extra checks are enabled
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* @chk_fastmap: if UBI fastmap extra checks are enabled
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* @disable_bgt: disable the background task for testing purposes
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* @emulate_bitflips: emulate bit-flips for testing purposes
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* @emulate_io_failures: emulate write/erase failures for testing purposes
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@ -363,6 +364,7 @@ struct ubi_wl_entry;
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* @dfs_dir: direntry object of the UBI device debugfs directory
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* @dfs_chk_gen: debugfs knob to enable UBI general extra checks
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* @dfs_chk_io: debugfs knob to enable UBI I/O extra checks
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* @dfs_chk_fastmap: debugfs knob to enable UBI fastmap extra checks
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* @dfs_disable_bgt: debugfs knob to disable the background task
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* @dfs_emulate_bitflips: debugfs knob to emulate bit-flips
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* @dfs_emulate_io_failures: debugfs knob to emulate write/erase failures
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@ -370,6 +372,7 @@ struct ubi_wl_entry;
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struct ubi_debug_info {
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unsigned int chk_gen:1;
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unsigned int chk_io:1;
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unsigned int chk_fastmap:1;
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unsigned int disable_bgt:1;
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unsigned int emulate_bitflips:1;
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unsigned int emulate_io_failures:1;
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@ -377,6 +380,7 @@ struct ubi_debug_info {
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struct dentry *dfs_dir;
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struct dentry *dfs_chk_gen;
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struct dentry *dfs_chk_io;
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struct dentry *dfs_chk_fastmap;
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struct dentry *dfs_disable_bgt;
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struct dentry *dfs_emulate_bitflips;
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struct dentry *dfs_emulate_io_failures;
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