diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/ubi/build.c | 10 | ||||
| -rw-r--r-- | drivers/mtd/ubi/debug.c | 126 | ||||
| -rw-r--r-- | drivers/mtd/ubi/fastmap.c | 33 |
3 files changed, 159 insertions, 10 deletions
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index 8bae3731d039..93e5d251a9e4 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -74,10 +74,10 @@ struct mtd_dev_param { }; /* Numbers of elements set in the @mtd_dev_param array */ -static int __initdata mtd_devs; +static int mtd_devs; /* MTD devices specification parameters */ -static struct mtd_dev_param __initdata mtd_dev_param[UBI_MAX_DEVICES]; +static struct mtd_dev_param mtd_dev_param[UBI_MAX_DEVICES]; #ifdef CONFIG_MTD_UBI_FASTMAP /* UBI module parameter to enable fastmap automatically on non-fastmap images */ static bool fm_autoconvert; @@ -1294,7 +1294,7 @@ module_exit(ubi_exit); * This function returns positive resulting integer in case of success and a * negative error code in case of failure. */ -static int __init bytes_str_to_int(const char *str) +static int bytes_str_to_int(const char *str) { char *endp; unsigned long result; @@ -1332,7 +1332,7 @@ static int __init bytes_str_to_int(const char *str) * This function returns zero in case of success and a negative error code in * case of error. */ -static int __init ubi_mtd_param_parse(const char *val, struct kernel_param *kp) +static int ubi_mtd_param_parse(const char *val, struct kernel_param *kp) { int i, len; struct mtd_dev_param *p; @@ -1413,7 +1413,7 @@ static int __init ubi_mtd_param_parse(const char *val, struct kernel_param *kp) return 0; } -module_param_call(mtd, ubi_mtd_param_parse, NULL, NULL, 000); +module_param_call(mtd, ubi_mtd_param_parse, NULL, NULL, 0400); MODULE_PARM_DESC(mtd, "MTD devices to attach. Parameter format: mtd=<name|num|path>[,<vid_hdr_offs>[,max_beb_per1024[,ubi_num]]].\n" "Multiple \"mtd\" parameters may be specified.\n" "MTD devices may be specified by their number, name, or path to the MTD character device node.\n" diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c index f101a4985a7c..7bc96294ae4d 100644 --- a/drivers/mtd/ubi/debug.c +++ b/drivers/mtd/ubi/debug.c @@ -22,6 +22,7 @@ #include <linux/debugfs.h> #include <linux/uaccess.h> #include <linux/module.h> +#include <linux/seq_file.h> /** @@ -386,7 +387,9 @@ out: return count; } -/* File operations for all UBI debugfs files */ +/* File operations for all UBI debugfs files except + * detailed_erase_block_info + */ static const struct file_operations dfs_fops = { .read = dfs_file_read, .write = dfs_file_write, @@ -395,6 +398,121 @@ static const struct file_operations dfs_fops = { .owner = THIS_MODULE, }; +/* As long as the position is less then that total number of erase blocks, + * we still have more to print. + */ +static void *eraseblk_count_seq_start(struct seq_file *s, loff_t *pos) +{ + struct ubi_device *ubi = s->private; + + if (*pos == 0) + return SEQ_START_TOKEN; + + if (*pos < ubi->peb_count) + return pos; + + return NULL; +} + +/* Since we are using the position as the iterator, we just need to check if we + * are done and increment the position. + */ +static void *eraseblk_count_seq_next(struct seq_file *s, void *v, loff_t *pos) +{ + struct ubi_device *ubi = s->private; + + if (v == SEQ_START_TOKEN) + return pos; + (*pos)++; + + if (*pos < ubi->peb_count) + return pos; + + return NULL; +} + +static void eraseblk_count_seq_stop(struct seq_file *s, void *v) +{ +} + +static int eraseblk_count_seq_show(struct seq_file *s, void *iter) +{ + struct ubi_device *ubi = s->private; + struct ubi_wl_entry *wl; + int *block_number = iter; + int erase_count = -1; + int err; + + /* If this is the start, print a header */ + if (iter == SEQ_START_TOKEN) { + seq_puts(s, + "physical_block_number\terase_count\tblock_status\tread_status\n"); + return 0; + } + + err = ubi_io_is_bad(ubi, *block_number); + if (err) + return err; + + spin_lock(&ubi->wl_lock); + + wl = ubi->lookuptbl[*block_number]; + if (wl) + erase_count = wl->ec; + + spin_unlock(&ubi->wl_lock); + + if (erase_count < 0) + return 0; + + seq_printf(s, "%-22d\t%-11d\n", *block_number, erase_count); + + return 0; +} + +static const struct seq_operations eraseblk_count_seq_ops = { + .start = eraseblk_count_seq_start, + .next = eraseblk_count_seq_next, + .stop = eraseblk_count_seq_stop, + .show = eraseblk_count_seq_show +}; + +static int eraseblk_count_open(struct inode *inode, struct file *f) +{ + struct seq_file *s; + int err; + + err = seq_open(f, &eraseblk_count_seq_ops); + if (err) + return err; + + s = f->private_data; + s->private = ubi_get_device((unsigned long)inode->i_private); + + if (!s->private) + return -ENODEV; + else + return 0; +} + +static int eraseblk_count_release(struct inode *inode, struct file *f) +{ + struct seq_file *s = f->private_data; + struct ubi_device *ubi = s->private; + + ubi_put_device(ubi); + + return seq_release(inode, f); +} + +static const struct file_operations eraseblk_count_fops = { + .owner = THIS_MODULE, + .open = eraseblk_count_open, + .read = seq_read, + .llseek = seq_lseek, + .release = eraseblk_count_release, +}; + /** * ubi_debugfs_init_dev - initialize debugfs for an UBI device. * @ubi: UBI device description object @@ -491,6 +609,12 @@ int ubi_debugfs_init_dev(struct ubi_device *ubi) goto out_remove; d->dfs_power_cut_max = dent; + fname = "detailed_erase_block_info"; + dent = debugfs_create_file(fname, S_IRUSR, d->dfs_dir, (void *)ubi_num, + &eraseblk_count_fops); + if (IS_ERR_OR_NULL(dent)) + goto out_remove; + return 0; out_remove: diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c index c1f5c29e458e..b44c8d348e78 100644 --- a/drivers/mtd/ubi/fastmap.c +++ b/drivers/mtd/ubi/fastmap.c @@ -828,6 +828,24 @@ static int find_fm_anchor(struct ubi_attach_info *ai) return ret; } +static struct ubi_ainf_peb *clone_aeb(struct ubi_attach_info *ai, + struct ubi_ainf_peb *old) +{ + struct ubi_ainf_peb *new; + + new = ubi_alloc_aeb(ai, old->pnum, old->ec); + if (!new) + return NULL; + + new->vol_id = old->vol_id; + new->sqnum = old->sqnum; + new->lnum = old->lnum; + new->scrub = old->scrub; + new->copy_flag = old->copy_flag; + + return new; +} + /** * ubi_scan_fastmap - scan the fastmap. * @ubi: UBI device object @@ -847,7 +865,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai, struct ubi_vid_hdr *vh; struct ubi_ec_hdr *ech; struct ubi_fastmap_layout *fm; - struct ubi_ainf_peb *tmp_aeb, *aeb; + struct ubi_ainf_peb *aeb; int i, used_blocks, pnum, fm_anchor, ret = 0; size_t fm_size; __be32 crc, tmp_crc; @@ -857,9 +875,16 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai, if (fm_anchor < 0) return UBI_NO_FASTMAP; - /* Move all (possible) fastmap blocks into our new attach structure. */ - list_for_each_entry_safe(aeb, tmp_aeb, &scan_ai->fastmap, u.list) - list_move_tail(&aeb->u.list, &ai->fastmap); + /* Copy all (possible) fastmap blocks into our new attach structure. */ + list_for_each_entry(aeb, &scan_ai->fastmap, u.list) { + struct ubi_ainf_peb *new; + + new = clone_aeb(ai, aeb); + if (!new) + return -ENOMEM; + + list_add(&new->u.list, &ai->fastmap); + } down_write(&ubi->fm_protect); memset(ubi->fm_buf, 0, ubi->fm_size); |