| What: /sys/devices/.../mmc_host/mmcX/mmcX:XXXX/enhanced_area_offset |
| Date: January 2011 |
| Contact: Chuanxiao Dong <chuanxiao.dong@intel.com> |
| Description: |
| Enhanced area is a new feature defined in eMMC4.4 standard. |
| eMMC4.4 or later card can support such feature. This kind of |
| area can help to improve the card performance. If the feature |
| is enabled, this attribute will indicate the start address of |
| enhanced data area. If not, this attribute will be -EINVAL. |
| Unit Byte. Format decimal. |
| |
| What: /sys/devices/.../mmc_host/mmcX/mmcX:XXXX/enhanced_area_size |
| Date: January 2011 |
| Contact: Chuanxiao Dong <chuanxiao.dong@intel.com> |
| Description: |
| Enhanced area is a new feature defined in eMMC4.4 standard. |
| eMMC4.4 or later card can support such feature. This kind of |
| area can help to improve the card performance. If the feature |
| is enabled, this attribute will indicate the size of enhanced |
| data area. If not, this attribute will be -EINVAL. |
| Unit KByte. Format decimal. |
| |
| What: /sys/devices/.../mmc_host/mmcX/slowio_read_us |
| Date: Oct, 2018 |
| Contact: "Leo Liou" <leoliou@google.com> |
| Description: |
| Contains watermark value in micro seconds unit for slow |
| MMC read I/O logging and counting. Can be updated by writing |
| value to. |
| |
| What: /sys/devices/.../mmc_host/mmcX/slowio_read_cnt |
| Date: Oct, 2018 |
| Contact: "Leo Liou" <leoliou@google.com> |
| Description: |
| Contains the number of MMC read I/O requests which took more |
| or equal to the defined slow I/O water mark time. |
| Can be reset by writing any value. |
| |
| What: /sys/devices/.../mmc_host/mmcX/slowio_write_us |
| Date: Oct, 2018 |
| Contact: "Leo Liou" <leoliou@google.com> |
| Description: |
| Contains watermark value in micro seconds unit for slow |
| MMC write I/O logging and counting. Can be updated by writing |
| value to. |
| |
| What: /sys/devices/.../mmc_host/mmcX/slowio_write_cnt |
| Date: Oct, 2018 |
| Contact: "Leo Liou" <leoliou@google.com> |
| Description: |
| Contains the number of MMC write I/O requests which took more |
| or equal to the defined slow I/O water mark time. |
| Can be reset by writing any value. |
| |
| |
| What: /sys/devices/.../mmc_host/mmcX/slowio_urgent_read_us |
| Date: Oct, 2018 |
| Contact: "Leo Liou" <leoliou@google.com> |
| Description: |
| Contains watermark value in micro seconds unit for slow |
| MMC urgent read I/O logging and counting. Can be updated by writing |
| value to. |
| |
| What: /sys/devices/.../mmc_host/mmcX/slowio_urgent_read_cnt |
| Date: Oct, 2018 |
| Contact: "Leo Liou" <leoliou@google.com> |
| Description: |
| Contains the number of MMC urgent read I/O requests which took more |
| or equal to the defined slow I/O water mark time. |
| Can be reset by writing any value. |
| |
| What: /sys/devices/.../mmc_host/mmcX/slowio_urgent_write_us |
| Date: Oct, 2018 |
| Contact: "Leo Liou" <leoliou@google.com> |
| Description: |
| Contains watermark value in micro seconds unit for slow |
| MMC urgent write I/O logging and counting. Can be updated by writing |
| value to. |
| |
| What: /sys/devices/.../mmc_host/mmcX/slowio_urgent_write_cnt |
| Date: Oct, 2018 |
| Contact: "Leo Liou" <leoliou@google.com> |
| Description: |
| Contains the number of MMC urgent write I/O requests which took more |
| or equal to the defined slow I/O water mark time. |
| Can be reset by writing any value. |
| |
| What: /sys/devices/.../mmc_host/mmcX/slowio_flush_us |
| Date: Oct, 2018 |
| Contact: "Leo Liou" <leoliou@google.com> |
| Description: |
| Contains watermark value in micro seconds unit for slow |
| MMC flush I/O logging and counting. Can be updated by writing |
| value to. |
| |
| What: /sys/devices/.../mmc_host/mmcX/slowio_flush_cnt |
| Date: Oct, 2018 |
| Contact: "Leo Liou" <leoliou@google.com> |
| Description: |
| Contains the number of MMC flush I/O requests which took more |
| or equal to the defined slow I/O water mark time. |
| Can be reset by writing any value. |
| |
| What: /sys/devices/.../mmc_host/mmcX/slowio_discard_us |
| Date: Oct, 2018 |
| Contact: "Leo Liou" <leoliou@google.com> |
| Description: |
| Contains watermark value in micro seconds unit for slow |
| MMC discard I/O logging and counting. Can be updated by writing |
| value to. |
| |
| What: /sys/devices/.../mmc_host/mmcX/slowio_discard_cnt |
| Date: Oct, 2018 |
| Contact: "Leo Liou" <leoliou@google.com> |
| Description: |
| Contains the number of MMC discard I/O requests which took more |
| or equal to the defined slow I/O water mark time. |
| Can be reset by writing any value. |
