diff options
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/procfs-concurrent_time | 16 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-dual-role-usb | 71 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 112 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-wakeup_reasons | 16 |
4 files changed, 215 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/procfs-concurrent_time b/Documentation/ABI/testing/procfs-concurrent_time new file mode 100644 index 000000000000..55b414289b40 --- /dev/null +++ b/Documentation/ABI/testing/procfs-concurrent_time @@ -0,0 +1,16 @@ +What: /proc/uid_concurrent_active_time +Date: December 2018 +Contact: Connor O'Brien <connoro@google.com> +Description: + The /proc/uid_concurrent_active_time file displays aggregated cputime + numbers for each uid, broken down by the total number of cores that were + active while the uid's task was running. + +What: /proc/uid_concurrent_policy_time +Date: December 2018 +Contact: Connor O'Brien <connoro@google.com> +Description: + The /proc/uid_concurrent_policy_time file displays aggregated cputime + numbers for each uid, broken down based on the cpufreq policy + of the core used by the uid's task and the number of cores associated + with that policy that were active while the uid's task was running. diff --git a/Documentation/ABI/testing/sysfs-class-dual-role-usb b/Documentation/ABI/testing/sysfs-class-dual-role-usb new file mode 100644 index 000000000000..a900fd75430c --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-dual-role-usb @@ -0,0 +1,71 @@ +What: /sys/class/dual_role_usb/.../ +Date: June 2015 +Contact: Badhri Jagan Sridharan<badhri@google.com> +Description: + Provide a generic interface to monitor and change + the state of dual role usb ports. The name here + refers to the name mentioned in the + dual_role_phy_desc that is passed while registering + the dual_role_phy_intstance through + devm_dual_role_instance_register. + +What: /sys/class/dual_role_usb/.../supported_modes +Date: June 2015 +Contact: Badhri Jagan Sridharan<badhri@google.com> +Description: + This is a static node, once initialized this + is not expected to change during runtime. "dfp" + refers to "downstream facing port" i.e. port can + only act as host. "ufp" refers to "upstream + facing port" i.e. port can only act as device. + "dfp ufp" refers to "dual role port" i.e. the port + can either be a host port or a device port. + +What: /sys/class/dual_role_usb/.../mode +Date: June 2015 +Contact: Badhri Jagan Sridharan<badhri@google.com> +Description: + The mode node refers to the current mode in which the + port is operating. "dfp" for host ports. "ufp" for device + ports and "none" when cable is not connected. + + On devices where the USB mode is software-controllable, + userspace can change the mode by writing "dfp" or "ufp". + On devices where the USB mode is fixed in hardware, + this attribute is read-only. + +What: /sys/class/dual_role_usb/.../power_role +Date: June 2015 +Contact: Badhri Jagan Sridharan<badhri@google.com> +Description: + The power_role node mentions whether the port + is "sink"ing or "source"ing power. "none" if + they are not connected. + + On devices implementing USB Power Delivery, + userspace can control the power role by writing "sink" or + "source". On devices without USB-PD, this attribute is + read-only. + +What: /sys/class/dual_role_usb/.../data_role +Date: June 2015 +Contact: Badhri Jagan Sridharan<badhri@google.com> +Description: + The data_role node mentions whether the port + is acting as "host" or "device" for USB data connection. + "none" if there is no active data link. + + On devices implementing USB Power Delivery, userspace + can control the data role by writing "host" or "device". + On devices without USB-PD, this attribute is read-only + +What: /sys/class/dual_role_usb/.../powers_vconn +Date: June 2015 +Contact: Badhri Jagan Sridharan<badhri@google.com> +Description: + The powers_vconn node mentions whether the port + is supplying power for VCONN pin. + + On devices with software control of VCONN, + userspace can disable the power supply to VCONN by writing "n", + or enable the power supply by writing "y". diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 0345f2d1c727..f82da9bbb1fd 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -51,12 +51,33 @@ Description: Controls the dirty page count condition for the in-place-update policies. +What: /sys/fs/f2fs/<disk>/min_hot_blocks +Date: March 2017 +Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> +Description: + Controls the dirty page count condition for redefining hot data. + +What: /sys/fs/f2fs/<disk>/min_ssr_sections +Date: October 2017 +Contact: "Chao Yu" <yuchao0@huawei.com> +Description: + Controls the fee section threshold to trigger SSR allocation. + What: /sys/fs/f2fs/<disk>/max_small_discards Date: November 2013 Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> Description: Controls the issue rate of small discard commands. +What: /sys/fs/f2fs/<disk>/discard_granularity +Date: July 2017 +Contact: "Chao Yu" <yuchao0@huawei.com> +Description: + Controls discard granularity of inner discard thread, inner thread + will not issue discards with size that is smaller than granularity. + The unit size is one block, now only support configuring in range + of [1, 512]. + What: /sys/fs/f2fs/<disk>/max_victim_search Date: January 2014 Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> @@ -80,6 +101,7 @@ Date: February 2015 Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> Description: Controls the trimming rate in batch mode. + <deprecated> What: /sys/fs/f2fs/<disk>/cp_interval Date: October 2015 @@ -87,8 +109,98 @@ Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> Description: Controls the checkpoint timing. +What: /sys/fs/f2fs/<disk>/idle_interval +Date: January 2016 +Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> +Description: + Controls the idle timing. + +What: /sys/fs/f2fs/<disk>/iostat_enable +Date: August 2017 +Contact: "Chao Yu" <yuchao0@huawei.com> +Description: + Controls to enable/disable IO stat. + What: /sys/fs/f2fs/<disk>/ra_nid_pages Date: October 2015 Contact: "Chao Yu" <chao2.yu@samsung.com> Description: Controls the count of nid pages to be readaheaded. + +What: /sys/fs/f2fs/<disk>/dirty_nats_ratio +Date: January 2016 +Contact: "Chao Yu" <chao2.yu@samsung.com> +Description: + Controls dirty nat entries ratio threshold, if current + ratio exceeds configured threshold, checkpoint will + be triggered for flushing dirty nat entries. + +What: /sys/fs/f2fs/<disk>/lifetime_write_kbytes +Date: January 2016 +Contact: "Shuoran Liu" <liushuoran@huawei.com> +Description: + Shows total written kbytes issued to disk. + +What: /sys/fs/f2fs/<disk>/feature +Date: July 2017 +Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> +Description: + Shows all enabled features in current device. + +What: /sys/fs/f2fs/<disk>/inject_rate +Date: May 2016 +Contact: "Sheng Yong" <shengyong1@huawei.com> +Description: + Controls the injection rate. + +What: /sys/fs/f2fs/<disk>/inject_type +Date: May 2016 +Contact: "Sheng Yong" <shengyong1@huawei.com> +Description: + Controls the injection type. + +What: /sys/fs/f2fs/<disk>/reserved_blocks +Date: June 2017 +Contact: "Chao Yu" <yuchao0@huawei.com> +Description: + Controls target reserved blocks in system, the threshold + is soft, it could exceed current available user space. + +What: /sys/fs/f2fs/<disk>/current_reserved_blocks +Date: October 2017 +Contact: "Yunlong Song" <yunlong.song@huawei.com> +Contact: "Chao Yu" <yuchao0@huawei.com> +Description: + Shows current reserved blocks in system, it may be temporarily + smaller than target_reserved_blocks, but will gradually + increase to target_reserved_blocks when more free blocks are + freed by user later. + +What: /sys/fs/f2fs/<disk>/gc_urgent +Date: August 2017 +Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> +Description: + Do background GC agressively + +What: /sys/fs/f2fs/<disk>/gc_urgent_sleep_time +Date: August 2017 +Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> +Description: + Controls sleep time of GC urgent mode + +What: /sys/fs/f2fs/<disk>/readdir_ra +Date: November 2017 +Contact: "Sheng Yong" <shengyong1@huawei.com> +Description: + Controls readahead inode block in readdir. + +What: /sys/fs/f2fs/<disk>/extension_list +Date: Feburary 2018 +Contact: "Chao Yu" <yuchao0@huawei.com> +Description: + Used to control configure extension list: + - Query: cat /sys/fs/f2fs/<disk>/extension_list + - Add: echo '[h/c]extension' > /sys/fs/f2fs/<disk>/extension_list + - Del: echo '[h/c]!extension' > /sys/fs/f2fs/<disk>/extension_list + - [h] means add/del hot file extension + - [c] means add/del cold file extension diff --git a/Documentation/ABI/testing/sysfs-kernel-wakeup_reasons b/Documentation/ABI/testing/sysfs-kernel-wakeup_reasons new file mode 100644 index 000000000000..acb19b91c192 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-kernel-wakeup_reasons @@ -0,0 +1,16 @@ +What: /sys/kernel/wakeup_reasons/last_resume_reason +Date: February 2014 +Contact: Ruchi Kandoi <kandoiruchi@google.com> +Description: + The /sys/kernel/wakeup_reasons/last_resume_reason is + used to report wakeup reasons after system exited suspend. + +What: /sys/kernel/wakeup_reasons/last_suspend_time +Date: March 2015 +Contact: jinqian <jinqian@google.com> +Description: + The /sys/kernel/wakeup_reasons/last_suspend_time is + used to report time spent in last suspend cycle. It contains + two numbers (in seconds) separated by space. First number is + the time spent in suspend and resume processes. Second number + is the time spent in sleep state.
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