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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org Using the ioctl command 'UBI_IOCECNFO' user space can obtain mean and max erase counters of a device. If fastmap is enabled also erase counter information of that area and its complementary area is provided. Signed-off-by: Rickard Andersson --- include/uapi/mtd/ubi-user.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/include/uapi/mtd/ubi-user.h b/include/uapi/mtd/ubi-user.h index e1571603175e..00cc8a083675 100644 --- a/include/uapi/mtd/ubi-user.h +++ b/include/uapi/mtd/ubi-user.h @@ -175,6 +175,8 @@ #define UBI_IOCRPEB _IOW(UBI_IOC_MAGIC, 4, __s32) /* Force scrubbing on the specified PEB */ #define UBI_IOCSPEB _IOW(UBI_IOC_MAGIC, 5, __s32) +/* Read detailed device information */ +#define UBI_IOCECNFO _IOR(UBI_IOC_MAGIC, 6, struct ubi_ecinfo_res) /* ioctl commands of the UBI control character device */ @@ -470,4 +472,27 @@ struct ubi_blkcreate_req { __s8 padding[128]; } __packed; +/** + * struct ubi_ecinfo_res - a data structure used in UBI device erase count + * information responses. + * + * @max_ec: Max physical erase block erase counter value of whole UBI device + * @mean_ec: Mean physical erase block erase counter value of whole UBI device + * @max_ec_fastmap: Max physical erase block erase counter value of fastmap area + * @mean_ec_fastmap: Mean physical erase block erase counter value of fastmap area + * @max_ec_data: Max physical erase block erase counter value of data area + * @mean_ec_data: Mean physical erase block erase counter value of data area + * + * @padding: reserved for future, not used, has to be zeroed + */ +struct ubi_ecinfo_res { + __s32 max_ec; + __s32 mean_ec; + __s32 max_ec_fastmap; + __s32 mean_ec_fastmap; + __s32 max_ec_data; + __s32 mean_ec_data; + __s8 padding[64]; +} __packed; + #endif /* __UBI_USER_H__ */ -- 2.30.2 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/