diff options
Diffstat (limited to 'Documentation/ABI/testing')
20 files changed, 363 insertions, 50 deletions
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uvc b/Documentation/ABI/testing/configfs-usb-gadget-uvc index 4feb692c4c1d..b6720768d63d 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-uvc +++ b/Documentation/ABI/testing/configfs-usb-gadget-uvc @@ -342,6 +342,70 @@ Description: Specific uncompressed frame descriptors support ========================= ===================================== +What: /config/usb-gadget/gadget/functions/uvc.name/streaming/framebased +Date: Sept 2024 +KernelVersion: 5.15 +Description: Framebased format descriptors + +What: /config/usb-gadget/gadget/functions/uvc.name/streaming/framebased/name +Date: Sept 2024 +KernelVersion: 5.15 +Description: Specific framebased format descriptors + + ================== ======================================= + bFormatIndex unique id for this format descriptor; + only defined after parent header is + linked into the streaming class; + read-only + bmaControls this format's data for bmaControls in + the streaming header + bmInterlaceFlags specifies interlace information, + read-only + bAspectRatioY the X dimension of the picture aspect + ratio, read-only + bAspectRatioX the Y dimension of the picture aspect + ratio, read-only + bDefaultFrameIndex optimum frame index for this stream + bBitsPerPixel number of bits per pixel used to + specify color in the decoded video + frame + guidFormat globally unique id used to identify + stream-encoding format + ================== ======================================= + +What: /config/usb-gadget/gadget/functions/uvc.name/streaming/framebased/name/name +Date: Sept 2024 +KernelVersion: 5.15 +Description: Specific framebased frame descriptors + + ========================= ===================================== + bFrameIndex unique id for this framedescriptor; + only defined after parent format is + linked into the streaming header; + read-only + dwFrameInterval indicates how frame interval can be + programmed; a number of values + separated by newline can be specified + dwDefaultFrameInterval the frame interval the device would + like to use as default + dwBytesPerLine Specifies the number of bytes per line + of video for packed fixed frame size + formats, allowing the receiver to + perform stride alignment of the video. + If the bVariableSize value (above) is + TRUE (1), or if the format does not + permit such alignment, this value shall + be set to zero (0). + dwMaxBitRate the maximum bit rate at the shortest + frame interval in bps + dwMinBitRate the minimum bit rate at the longest + frame interval in bps + wHeight height of decoded bitmap frame in px + wWidth width of decoded bitmam frame in px + bmCapabilities still image support, fixed frame-rate + support + ========================= ===================================== + What: /config/usb-gadget/gadget/functions/uvc.name/streaming/header Date: Dec 2014 KernelVersion: 4.0 diff --git a/Documentation/ABI/testing/debugfs-hisi-hpre b/Documentation/ABI/testing/debugfs-hisi-hpre index d4e16ef9ac9a..29fb7d5ffc69 100644 --- a/Documentation/ABI/testing/debugfs-hisi-hpre +++ b/Documentation/ABI/testing/debugfs-hisi-hpre @@ -184,3 +184,10 @@ Date: Apr 2020 Contact: [email protected] Description: Dump the total number of time out requests. Available for both PF and VF, and take no other effect on HPRE. + +What: /sys/kernel/debug/hisi_hpre/<bdf>/cap_regs +Date: Oct 2024 +Contact: [email protected] +Description: Dump the values of the qm and hpre capability bit registers and + support the query of device specifications to facilitate fault locating. + Available for both PF and VF, and take no other effect on HPRE. diff --git a/Documentation/ABI/testing/debugfs-hisi-migration b/Documentation/ABI/testing/debugfs-hisi-migration new file mode 100644 index 000000000000..2c01b2d387dd --- /dev/null +++ b/Documentation/ABI/testing/debugfs-hisi-migration @@ -0,0 +1,25 @@ +What: /sys/kernel/debug/vfio/<device>/migration/hisi_acc/dev_data +Date: Jan 2025 +KernelVersion: 6.13 +Contact: Longfang Liu <[email protected]> +Description: Read the configuration data and some status data + required for device live migration. These data include device + status data, queue configuration data, some task configuration + data and device attribute data. The output format of the data + is defined by the live migration driver. + +What: /sys/kernel/debug/vfio/<device>/migration/hisi_acc/migf_data +Date: Jan 2025 +KernelVersion: 6.13 +Contact: Longfang Liu <[email protected]> +Description: Read the data from the last completed live migration. + This data includes the same device status data as in "dev_data". + The migf_data is the dev_data that is migrated. + +What: /sys/kernel/debug/vfio/<device>/migration/hisi_acc/cmd_state +Date: Jan 2025 +KernelVersion: 6.13 +Contact: Longfang Liu <[email protected]> +Description: Used to obtain the device command sending and receiving + channel status. Returns failure or success logs based on the + results. diff --git a/Documentation/ABI/testing/debugfs-hisi-sec b/Documentation/ABI/testing/debugfs-hisi-sec index 6c6c9a6e150a..82bf4a0dc7f7 100644 --- a/Documentation/ABI/testing/debugfs-hisi-sec +++ b/Documentation/ABI/testing/debugfs-hisi-sec @@ -157,3 +157,10 @@ Contact: [email protected] Description: Dump the total number of completed but marked error requests to be received. Available for both PF and VF, and take no other effect on SEC. + +What: /sys/kernel/debug/hisi_sec2/<bdf>/cap_regs +Date: Oct 2024 +Contact: [email protected] +Description: Dump the values of the qm and sec capability bit registers and + support the query of device specifications to facilitate fault locating. + Available for both PF and VF, and take no other effect on SEC. diff --git a/Documentation/ABI/testing/debugfs-hisi-zip b/Documentation/ABI/testing/debugfs-hisi-zip index a22dd6942219..0abd65d27e9b 100644 --- a/Documentation/ABI/testing/debugfs-hisi-zip +++ b/Documentation/ABI/testing/debugfs-hisi-zip @@ -158,3 +158,10 @@ Contact: [email protected] Description: Dump the total number of BD type error requests to be received. Available for both PF and VF, and take no other effect on ZIP. + +What: /sys/kernel/debug/hisi_zip/<bdf>/cap_regs +Date: Oct 2024 +Contact: [email protected] +Description: Dump the values of the qm and zip capability bit registers and + support the query of device specifications to facilitate fault locating. + Available for both PF and VF, and take no other effect on ZIP. diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-pmu b/Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-pmu new file mode 100644 index 000000000000..a116aee9709a --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-pmu @@ -0,0 +1,25 @@ +What: /sys/bus/event_source/devices/vpa_pmu/format +Date: November 2024 +Contact: Linux on PowerPC Developer List <[email protected]> +Description: Read-only. Attribute group to describe the magic bits + that go into perf_event_attr.config for a particular pmu. + (See ABI/testing/sysfs-bus-event_source-devices-format). + + Each attribute under this group defines a bit range of the + perf_event_attr.config. Supported attribute are listed + below:: + + event = "config:0-31" - event ID + + For example:: + + l1_to_l2_lat = "event=0x1" + +What: /sys/bus/event_source/devices/vpa_pmu/events +Date: November 2024 +Contact: Linux on PowerPC Developer List <[email protected]> +Description: Read-only. Attribute group to describe performance monitoring + events for the Virtual Processor Area events. Each attribute + in this group describes a single performance monitoring event + supported by vpa_pmu. The name of the file is the name of + the event (See ABI/testing/sysfs-bus-event_source-devices-events). diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index 89943c2d54e8..f83bd6829285 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -2268,6 +2268,30 @@ Description: An example format is 16-bytes, 2-digits-per-byte, HEX-string representing the sensor unique ID number. +What: /sys/bus/iio/devices/iio:deviceX/filter_type_available +What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_filter_mode_available +KernelVersion: 6.1 +Contact: [email protected] +Description: + Reading returns a list with the possible filter modes. Options + for the attribute: + + * "sinc3" - The digital sinc3 filter. Moderate 1st + conversion time. Good noise performance. + * "sinc4" - Sinc 4. Excellent noise performance. Long + 1st conversion time. + * "sinc5" - The digital sinc5 filter. Excellent noise + performance + * "sinc4+sinc1" - Sinc4 + averaging by 8. Low 1st conversion + time. + * "sinc3+rej60" - Sinc3 + 60Hz rejection. + * "sinc3+sinc1" - Sinc3 + averaging by 8. Low 1st conversion + time. + * "sinc3+pf1" - Sinc3 + device specific Post Filter 1. + * "sinc3+pf2" - Sinc3 + device specific Post Filter 2. + * "sinc3+pf3" - Sinc3 + device specific Post Filter 3. + * "sinc3+pf4" - Sinc3 + device specific Post Filter 4. + What: /sys/.../events/in_proximity_thresh_either_runningperiod KernelVersion: 6.6 Contact: [email protected] @@ -2339,3 +2363,11 @@ KernelVersion: 6.10 Contact: [email protected] Description: The value of current sense resistor in Ohms. + +What: /sys/.../iio:deviceX/in_attention_input +KernelVersion: 6.13 +Contact: [email protected] +Description: + Value representing the user's attention to the system expressed + in units as percentage. This usually means if the user is + looking at the screen or not. diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-ad4130 b/Documentation/ABI/testing/sysfs-bus-iio-adc-ad4130 deleted file mode 100644 index f24ed6687e90..000000000000 --- a/Documentation/ABI/testing/sysfs-bus-iio-adc-ad4130 +++ /dev/null @@ -1,46 +0,0 @@ -What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_filter_mode_available -KernelVersion: 6.2 -Contact: [email protected] -Description: - Reading returns a list with the possible filter modes. - - * "sinc4" - Sinc 4. Excellent noise performance. Long - 1st conversion time. No natural 50/60Hz rejection. - - * "sinc4+sinc1" - Sinc4 + averaging by 8. Low 1st conversion - time. - - * "sinc3" - Sinc3. Moderate 1st conversion time. - Good noise performance. - - * "sinc3+rej60" - Sinc3 + 60Hz rejection. At a sampling - frequency of 50Hz, achieves simultaneous 50Hz and 60Hz - rejection. - - * "sinc3+sinc1" - Sinc3 + averaging by 8. Low 1st conversion - time. Best used with a sampling frequency of at least - 216.19Hz. - - * "sinc3+pf1" - Sinc3 + Post Filter 1. 53dB rejection @ - 50Hz, 58dB rejection @ 60Hz. - - * "sinc3+pf2" - Sinc3 + Post Filter 2. 70dB rejection @ - 50Hz, 70dB rejection @ 60Hz. - - * "sinc3+pf3" - Sinc3 + Post Filter 3. 99dB rejection @ - 50Hz, 103dB rejection @ 60Hz. - - * "sinc3+pf4" - Sinc3 + Post Filter 4. 103dB rejection @ - 50Hz, 109dB rejection @ 60Hz. - -What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_filter_mode -KernelVersion: 6.2 -Contact: [email protected] -Description: - Set the filter mode of the differential channel. When the filter - mode changes, the in_voltageY-voltageZ_sampling_frequency and - in_voltageY-voltageZ_sampling_frequency_available attributes - might also change to accommodate the new filter mode. - If the current sampling frequency is out of range for the new - filter mode, the sampling frequency will be changed to the - closest valid one. diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci index 7f63c7e97773..5da6a14dc326 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci +++ b/Documentation/ABI/testing/sysfs-bus-pci @@ -163,6 +163,17 @@ Description: will be present in sysfs. Writing 1 to this file will perform reset. +What: /sys/bus/pci/devices/.../reset_subordinate +Date: October 2024 +Contact: [email protected] +Description: + This is visible only for bridge devices. If you want to reset + all devices attached through the subordinate bus of a specific + bridge device, writing 1 to this will try to do it. This will + affect all devices attached to the system through this bridge + similiar to writing 1 to their individual "reset" file, so use + with caution. + What: /sys/bus/pci/devices/.../vpd Date: February 2008 Contact: Ben Hutchings <[email protected]> diff --git a/Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache b/Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache new file mode 100644 index 000000000000..ac3431736f5c --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache @@ -0,0 +1,12 @@ +What: /sys/bus/platform/drivers/amd_x3d_vcache/AMDI0101:00/amd_x3d_mode +Date: November 2024 +KernelVersion: 6.13 +Contact: Basavaraj Natikar <[email protected]> +Description: (RW) AMD 3D V-Cache optimizer allows users to switch CPU core + rankings dynamically. + + This file switches between these two modes: + - "frequency" cores within the faster CCD are prioritized before + those in the slower CCD. + - "cache" cores within the larger L3 CCD are prioritized before + those in the smaller L3 CCD. diff --git a/Documentation/ABI/testing/sysfs-class-firmware-attributes b/Documentation/ABI/testing/sysfs-class-firmware-attributes index 9c82c7b42ff8..2713efa509b4 100644 --- a/Documentation/ABI/testing/sysfs-class-firmware-attributes +++ b/Documentation/ABI/testing/sysfs-class-firmware-attributes @@ -193,7 +193,7 @@ Description: mechanism: The means of authentication. This attribute is mandatory. - Only supported type currently is "password". + Supported types are "password" or "certificate". max_password_length: A file that can be read to obtain the @@ -303,6 +303,7 @@ Description: being configured allowing anyone to make changes. After any of these operations the system must reboot for the changes to take effect. + Admin and System certificates are supported from 2025 systems onward. certificate_thumbprint: Read only attribute used to display the MD5, SHA1 and SHA256 thumbprints diff --git a/Documentation/ABI/testing/sysfs-class-typec b/Documentation/ABI/testing/sysfs-class-typec index 281b995beb05..38e101c17a00 100644 --- a/Documentation/ABI/testing/sysfs-class-typec +++ b/Documentation/ABI/testing/sysfs-class-typec @@ -149,6 +149,19 @@ Description: advertise to the partner. The currently used capabilities are in brackets. Selection happens by writing to the file. +What: /sys/class/typec/<port>/usb_capability +Date: November 2024 +Contact: Heikki Krogerus <[email protected]> +Description: Lists the supported USB Modes. The default USB mode that is used + next time with the Enter_USB Message is in brackets. The default + mode can be changed by writing to the file when supported by the + driver. + + Valid values: + - usb2 (USB 2.0) + - usb3 (USB 3.2) + - usb4 (USB4) + USB Type-C partner devices (eg. /sys/class/typec/port0-partner/) What: /sys/class/typec/<port>-partner/accessory_mode @@ -220,6 +233,20 @@ Description: directory exists, it will have an attribute file for every VDO in Discover Identity command result. +What: /sys/class/typec/<port>-partner/usb_mode +Date: November 2024 +Contact: Heikki Krogerus <[email protected]> +Description: The USB Modes that the partner device supports. The active mode + is displayed in brackets. The active USB mode can be changed by + writing to this file when the port driver is able to send Data + Reset Message to the partner. That requires USB Power Delivery + contract between the partner and the port. + + Valid values: + - usb2 (USB 2.0) + - usb3 (USB 3.2) + - usb4 (USB4) + USB Type-C cable devices (eg. /sys/class/typec/port0-cable/) Note: Electronically Marked Cables will have a device also for one cable plug diff --git a/Documentation/ABI/testing/sysfs-class-watchdog b/Documentation/ABI/testing/sysfs-class-watchdog index 94fb74615951..70eabccf0557 100644 --- a/Documentation/ABI/testing/sysfs-class-watchdog +++ b/Documentation/ABI/testing/sysfs-class-watchdog @@ -76,7 +76,7 @@ Description: timeout when the pretimeout interrupt is delivered. Pretimeout is an optional feature. -What: /sys/class/watchdog/watchdogn/pretimeout_avaialable_governors +What: /sys/class/watchdog/watchdogn/pretimeout_available_governors Date: February 2017 Contact: Wim Van Sebroeck <[email protected]> Description: diff --git a/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs b/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs index 1666340820f7..d1b3a95a5518 100644 --- a/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs +++ b/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs @@ -79,3 +79,48 @@ Description: indicates a lane. crc_err_cnt: (RO) CRC err count on this port. ============= ==== ============================================= + +What: /sys/devices/platform/HISI04Bx:00/used_types +Date: August 2024 +KernelVersion: 6.12 +Contact: Huisong Li <[email protected]> +Description: + This interface is used to show all HCCS types used on the + platform, like, HCCS-v1, HCCS-v2 and so on. + +What: /sys/devices/platform/HISI04Bx:00/available_inc_dec_lane_types +What: /sys/devices/platform/HISI04Bx:00/dec_lane_of_type +What: /sys/devices/platform/HISI04Bx:00/inc_lane_of_type +Date: August 2024 +KernelVersion: 6.12 +Contact: Huisong Li <[email protected]> +Description: + These interfaces under /sys/devices/platform/HISI04Bx/ are + used to support the low power consumption feature of some + HCCS types by changing the number of lanes used. The interfaces + changing the number of lanes used are 'dec_lane_of_type' and + 'inc_lane_of_type' which require root privileges. These + interfaces aren't exposed if no HCCS type on platform support + this feature. Please note that decreasing lane number is only + allowed if all the specified HCCS ports are not busy. + + The low power consumption interfaces are as follows: + + ============================= ==== ================================ + available_inc_dec_lane_types: (RO) available HCCS types (string) to + increase and decrease the number + of lane used, e.g. HCCS-v2. + dec_lane_of_type: (WO) input HCCS type supported + decreasing lane to decrease the + used lane number of all specified + HCCS type ports on platform to + the minimum. + You can query the 'cur_lane_num' + to get the minimum lane number + after executing successfully. + inc_lane_of_type: (WO) input HCCS type supported + increasing lane to increase the + used lane number of all specified + HCCS type ports on platform to + the full lane state. + ============================= ==== ================================ diff --git a/Documentation/ABI/testing/sysfs-driver-hid-corsair-void b/Documentation/ABI/testing/sysfs-driver-hid-corsair-void new file mode 100644 index 000000000000..83fa625c0025 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-hid-corsair-void @@ -0,0 +1,38 @@ +What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/fw_version_headset +Date: January 2024 +KernelVersion: 6.13 +Contact: Stuart Hayhurst <[email protected]> +Description: (R) The firmware version of the headset + * Returns -ENODATA if no version was reported + +What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/fw_version_receiver +Date: January 2024 +KernelVersion: 6.13 +Contact: Stuart Hayhurst <[email protected]> +Description: (R) The firmware version of the receiver + +What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/microphone_up +Date: July 2023 +KernelVersion: 6.13 +Contact: Stuart Hayhurst <[email protected]> +Description: (R) Get the physical position of the microphone + * 1 -> Microphone up + * 0 -> Microphone down + +What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/send_alert +Date: July 2023 +KernelVersion: 6.13 +Contact: Stuart Hayhurst <[email protected]> +Description: (W) Play a built-in notification from the headset (0 / 1) + +What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/set_sidetone +Date: December 2023 +KernelVersion: 6.13 +Contact: Stuart Hayhurst <[email protected]> +Description: (W) Set the sidetone volume (0 - sidetone_max) + +What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/sidetone_max +Date: July 2024 +KernelVersion: 6.13 +Contact: Stuart Hayhurst <[email protected]> +Description: (R) Report the maximum sidetone volume diff --git a/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon index be4141a7522f..a885e5316d02 100644 --- a/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon +++ b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon @@ -83,3 +83,11 @@ Contact: [email protected] Description: RO. Fan speed of device in RPM. Only supported for particular Intel i915 graphics platforms. + +What: /sys/bus/pci/drivers/i915/.../hwmon/hwmon<i>/temp1_input +Date: November 2024 +KernelVersion: 6.12 +Contact: [email protected] +Description: RO. GPU package temperature in millidegree Celsius. + + Only supported for particular Intel i915 graphics platforms. diff --git a/Documentation/ABI/testing/sysfs-driver-panthor-profiling b/Documentation/ABI/testing/sysfs-driver-panthor-profiling new file mode 100644 index 000000000000..af05fccedc15 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-panthor-profiling @@ -0,0 +1,10 @@ +What: /sys/bus/platform/drivers/panthor/.../profiling +Date: September 2024 +KernelVersion: 6.11.0 +Contact: Adrian Larumbe <[email protected]> +Description: + Bitmask to enable drm fdinfo's job profiling measurements. + Valid values are: + 0: Don't enable fdinfo job profiling sources. + 1: Enable GPU cycle measurements for running jobs. + 2: Enable GPU timestamp sampling for running jobs. diff --git a/Documentation/ABI/testing/sysfs-driver-spi-intel b/Documentation/ABI/testing/sysfs-driver-spi-intel new file mode 100644 index 000000000000..d7c9139ddbf3 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-spi-intel @@ -0,0 +1,20 @@ +What: /sys/devices/.../intel_spi_protected +Date: Feb 2025 +KernelVersion: 6.13 +Contact: Alexander Usyskin <[email protected]> +Description: This attribute allows the userspace to check if the + Intel SPI flash controller is write protected from the host. + +What: /sys/devices/.../intel_spi_locked +Date: Feb 2025 +KernelVersion: 6.13 +Contact: Alexander Usyskin <[email protected]> +Description: This attribute allows the user space to check if the + Intel SPI flash controller locks supported opcodes. + +What: /sys/devices/.../intel_spi_bios_locked +Date: Feb 2025 +KernelVersion: 6.13 +Contact: Alexander Usyskin <[email protected]> +Description: This attribute allows the user space to check if the + Intel SPI flash controller BIOS region is locked for writes. diff --git a/Documentation/ABI/testing/sysfs-fs-erofs b/Documentation/ABI/testing/sysfs-fs-erofs index 284224d1b56f..b134146d735b 100644 --- a/Documentation/ABI/testing/sysfs-fs-erofs +++ b/Documentation/ABI/testing/sysfs-fs-erofs @@ -16,3 +16,14 @@ Description: Control strategy of sync decompression: readahead on atomic contexts only. - 1 (force on): enable for readpage and readahead. - 2 (force off): disable for all situations. + +What: /sys/fs/erofs/<disk>/drop_caches +Date: November 2024 +Contact: "Guo Chunhai" <[email protected]> +Description: Writing to this will drop compression-related caches, + currently used to drop in-memory pclusters and cached + compressed folios: + + - 1 : invalidate cached compressed folios + - 2 : drop in-memory pclusters + - 3 : drop in-memory pclusters and cached compressed folios diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index fdedf1ea944b..3e1630c70d8a 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -311,10 +311,13 @@ Description: Do background GC aggressively when set. Set to 0 by default. GC approach and turns SSR mode on. gc urgent low(2): lowers the bar of checking I/O idling in order to process outstanding discard commands and GC a - little bit aggressively. uses cost benefit GC approach. + little bit aggressively. always uses cost benefit GC approach, + and will override age-threshold GC approach if ATGC is enabled + at the same time. gc urgent mid(3): does GC forcibly in a period of given gc_urgent_sleep_time and executes a mid level of I/O idling check. - uses cost benefit GC approach. + always uses cost benefit GC approach, and will override + age-threshold GC approach if ATGC is enabled at the same time. What: /sys/fs/f2fs/<disk>/gc_urgent_sleep_time Date: August 2017 @@ -819,3 +822,9 @@ Description: It controls the valid block ratio threshold not to trigger excessiv for zoned deivces. The initial value of it is 95(%). F2FS will stop the background GC thread from intiating GC for sections having valid blocks exceeding the ratio. + +What: /sys/fs/f2fs/<disk>/max_read_extent_count +Date: November 2024 +Contact: "Chao Yu" <[email protected]> +Description: It controls max read extent count for per-inode, the value of threshold + is 10240 by default. |