redonkable/alistair23-linux
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UBI: Add initial support for fastmap self checks

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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>
This commit is contained in:
Richard Weinberger 2014-09-22 11:44:50 +02:00
parent 5ca97ad838
commit 5fa7fa5dad
3 changed files with 20 additions and 0 deletions
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11
drivers/mtd/ubi/debug.c
View file

@ -275,6 +275,8 @@ static ssize_t dfs_file_read(struct file *file, char __user *user_buf,
val = d->chk_gen;
else if (dent == d->dfs_chk_io)
val = d->chk_io;
else if (dent == d->dfs_chk_fastmap)
val = d->chk_fastmap;
else if (dent == d->dfs_disable_bgt)
val = d->disable_bgt;
else if (dent == d->dfs_emulate_bitflips)
@ -336,6 +338,8 @@ static ssize_t dfs_file_write(struct file *file, const char __user *user_buf,
d->chk_gen = val;
else if (dent == d->dfs_chk_io)
d->chk_io = val;
else if (dent == d->dfs_chk_fastmap)
d->chk_fastmap = val;
else if (dent == d->dfs_disable_bgt)
d->disable_bgt = val;
else if (dent == d->dfs_emulate_bitflips)
@ -406,6 +410,13 @@ int ubi_debugfs_init_dev(struct ubi_device *ubi)
goto out_remove;
d->dfs_chk_io = dent;
fname = "chk_fastmap";
dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
&dfs_fops);
if (IS_ERR_OR_NULL(dent))
goto out_remove;
d->dfs_chk_fastmap = dent;
fname = "tst_disable_bgt";
dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
&dfs_fops);

5
drivers/mtd/ubi/debug.h
View file

@ -127,4 +127,9 @@ static inline int ubi_dbg_chk_gen(const struct ubi_device *ubi)
{
return ubi->dbg.chk_gen;
}
static inline int ubi_dbg_chk_fastmap(const struct ubi_device *ubi)
{
return ubi->dbg.chk_fastmap;
}
#endif /* !__UBI_DEBUG_H__ */

4
drivers/mtd/ubi/ubi.h
View file

@ -356,6 +356,7 @@ struct ubi_wl_entry;
*
* @chk_gen: if UBI general extra checks are enabled
* @chk_io: if UBI I/O extra checks are enabled
* @chk_fastmap: if UBI fastmap 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
@ -363,6 +364,7 @@ struct ubi_wl_entry;
* @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_chk_fastmap: debugfs knob to enable UBI fastmap 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
@ -370,6 +372,7 @@ struct ubi_wl_entry;
struct ubi_debug_info {
unsigned int chk_gen:1;
unsigned int chk_io:1;
unsigned int chk_fastmap:1;
unsigned int disable_bgt:1;
unsigned int emulate_bitflips:1;
unsigned int emulate_io_failures:1;
@ -377,6 +380,7 @@ struct ubi_debug_info {
struct dentry *dfs_dir;
struct dentry *dfs_chk_gen;
struct dentry *dfs_chk_io;
struct dentry *dfs_chk_fastmap;
struct dentry *dfs_disable_bgt;
struct dentry *dfs_emulate_bitflips;
struct dentry *dfs_emulate_io_failures;