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| author |   Ezequiel Garcia <ezequiel.garcia@free-electrons.com> | 2014-06-24 10:55:50 -0300 |
|---|---|---|
| committer |   Brian Norris <computersforpeace@gmail.com> | 2014-07-08 18:37:26 -0700 |
| commit | 990a3af0c20590954be01a95c2c3fcef9360a836 (patch) | |
| tree | fc993286f8726b9a413b4d79e21133f3157ec2e8 /drivers/mtd/mtdcore.c | |
| parent | mtd: phram: replace kmalloc/strcpy by kstrdup (diff) | |
| download | linux-dev-990a3af0c20590954be01a95c2c3fcef9360a836.tar.xz linux-dev-990a3af0c20590954be01a95c2c3fcef9360a836.zip | |
mtd: Add sysfs attributes to expose the ECC stats fields
These new sysfs device attributes allow us to retrieve the ECC and bad
block stats by poking a sysfs file, which is often more convenient than
using the ioctl.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Pekon Gupta <pekon@ti.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd/mtdcore.c')
| -rw-r--r-- | drivers/mtd/mtdcore.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index d201feeb3ca6..11857faa0d96 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -298,6 +298,47 @@ static ssize_t mtd_ecc_step_size_show(struct device *dev, } static DEVICE_ATTR(ecc_step_size, S_IRUGO, mtd_ecc_step_size_show, NULL); +static ssize_t mtd_ecc_stats_corrected_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mtd_info *mtd = dev_get_drvdata(dev); + struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats; + + return snprintf(buf, PAGE_SIZE, "%u\n", ecc_stats->corrected); +} +static DEVICE_ATTR(corrected_bits, S_IRUGO, + mtd_ecc_stats_corrected_show, NULL); + +static ssize_t mtd_ecc_stats_errors_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mtd_info *mtd = dev_get_drvdata(dev); + struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats; + + return snprintf(buf, PAGE_SIZE, "%u\n", ecc_stats->failed); +} +static DEVICE_ATTR(ecc_failures, S_IRUGO, mtd_ecc_stats_errors_show, NULL); + +static ssize_t mtd_badblocks_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mtd_info *mtd = dev_get_drvdata(dev); + struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats; + + return snprintf(buf, PAGE_SIZE, "%u\n", ecc_stats->badblocks); +} +static DEVICE_ATTR(bad_blocks, S_IRUGO, mtd_badblocks_show, NULL); + +static ssize_t mtd_bbtblocks_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mtd_info *mtd = dev_get_drvdata(dev); + struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats; + + return snprintf(buf, PAGE_SIZE, "%u\n", ecc_stats->bbtblocks); +} +static DEVICE_ATTR(bbt_blocks, S_IRUGO, mtd_bbtblocks_show, NULL); + static struct attribute *mtd_attrs[] = { &dev_attr_type.attr, &dev_attr_flags.attr, @@ -310,6 +351,10 @@ static struct attribute *mtd_attrs[] = { &dev_attr_name.attr, &dev_attr_ecc_strength.attr, &dev_attr_ecc_step_size.attr, + &dev_attr_corrected_bits.attr, + &dev_attr_ecc_failures.attr, + &dev_attr_bad_blocks.attr, + &dev_attr_bbt_blocks.attr, &dev_attr_bitflip_threshold.attr, NULL, }; |