Commit 5fa7fa5d authored by Richard Weinberger's avatar Richard Weinberger
Browse files

UBI: Add initial support for fastmap self checks 



Using this debugfs knob fastmap self checks can be controlled.

Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
Reviewed-by: default avatarTanya Brokhman <tlinder@codeaurora.org>
parent 5ca97ad8

drivers/mtd/ubi/debug.c

+11 −0
Original line number Diff line number Diff line
@@ -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);

drivers/mtd/ubi/debug.h

+5 −0
Original line number Diff line number Diff line
@@ -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__ */

drivers/mtd/ubi/ubi.h

+4 −0
Original line number Diff line number Diff line
@@ -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;