diff options
Diffstat (limited to 'Documentation/ABI/testing')
| -rw-r--r-- | Documentation/ABI/testing/debugfs-cec-error-inj | 2 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-drm | 8 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-driver-framer-pef2256 | 8 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 56 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-mm-damon | 7 |
5 files changed, 77 insertions, 4 deletions
diff --git a/Documentation/ABI/testing/debugfs-cec-error-inj b/Documentation/ABI/testing/debugfs-cec-error-inj index 8debcb08a3b5..c512f71bba8e 100644 --- a/Documentation/ABI/testing/debugfs-cec-error-inj +++ b/Documentation/ABI/testing/debugfs-cec-error-inj @@ -1,6 +1,6 @@ What: /sys/kernel/debug/cec/*/error-inj Date: March 2018 -Contact: Hans Verkuil <hverkuil-cisco@xs4all.nl> +Contact: Hans Verkuil <hverkuil@kernel.org> Description: The CEC Framework allows for CEC error injection commands through diff --git a/Documentation/ABI/testing/sysfs-class-drm b/Documentation/ABI/testing/sysfs-class-drm new file mode 100644 index 000000000000..d23fed5e29a7 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-drm @@ -0,0 +1,8 @@ +What: /sys/class/drm/.../boot_display +Date: January 2026 +Contact: Linux DRI developers <dri-devel@vger.kernel.org> +Description: + This file indicates that displays connected to the device were + used to display the boot sequence. If a display connected to + the device was used to display the boot sequence the file will + be present and contain "1". diff --git a/Documentation/ABI/testing/sysfs-driver-framer-pef2256 b/Documentation/ABI/testing/sysfs-driver-framer-pef2256 new file mode 100644 index 000000000000..29f97783bf07 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-framer-pef2256 @@ -0,0 +1,8 @@ +What: /sys/bus/platform/devices/xxx/version +Date: Sep 2025 +Contact: netdev@vger.kernel.org +Description: Reports the version of the PEF2256 framer + + Access: Read + + Valid values: Represented as string diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index bc0e7fefc39d..b590809869ca 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -822,8 +822,8 @@ What: /sys/fs/f2fs/<disk>/gc_valid_thresh_ratio Date: September 2024 Contact: "Daeho Jeong" <daehojeong@google.com> Description: It controls the valid block ratio threshold not to trigger excessive GC - 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 + for zoned devices. The initial value of it is 95(%). F2FS will stop the + background GC thread from initiating GC for sections having valid blocks exceeding the ratio. What: /sys/fs/f2fs/<disk>/max_read_extent_count @@ -847,7 +847,7 @@ Description: For several zoned storage devices, vendors will provide extra space filesystem level GC. To do that, we can reserve the space using reserved_blocks. However, it is not enough, since this extra space should not be shown to users. So, with this new sysfs node, we can hide the space - by substracting reserved_blocks from total bytes. + by subtracting reserved_blocks from total bytes. What: /sys/fs/f2fs/<disk>/encoding_flags Date: April 2025 @@ -883,3 +883,53 @@ Date: June 2025 Contact: "Daeho Jeong" <daehojeong@google.com> Description: Control GC algorithm for boost GC. 0: cost benefit, 1: greedy Default: 1 + +What: /sys/fs/f2fs/<disk>/effective_lookup_mode +Date: August 2025 +Contact: "Daniel Lee" <chullee@google.com> +Description: + This is a read-only entry to show the effective directory lookup mode + F2FS is currently using for casefolded directories. + This considers both the "lookup_mode" mount option and the on-disk + encoding flag, SB_ENC_NO_COMPAT_FALLBACK_FL. + + Possible values are: + - "perf": Hash-only lookup. + - "compat": Hash-based lookup with a linear search fallback enabled + - "auto:perf": lookup_mode is auto and fallback is disabled on-disk + - "auto:compat": lookup_mode is auto and fallback is enabled on-disk + +What: /sys/fs/f2fs/<disk>/bggc_io_aware +Date: August 2025 +Contact: "Liao Yuanhong" <liaoyuanhong@vivo.com> +Description: Used to adjust the BG_GC priority when pending IO, with a default value + of 0. Specifically, for ZUFS, the default value is 1. + + ================== ====================================================== + value description + bggc_io_aware = 0 skip background GC if there is any kind of pending IO + bggc_io_aware = 1 skip background GC if there is pending read IO + bggc_io_aware = 2 don't aware IO for background GC + ================== ====================================================== + +What: /sys/fs/f2fs/<disk>/allocate_section_hint +Date: August 2025 +Contact: "Liao Yuanhong" <liaoyuanhong@vivo.com> +Description: Indicates the hint section between the first device and others in multi-devices + setup. It defaults to the end of the first device in sections. For a single storage + device, it defaults to the total number of sections. It can be manually set to match + scenarios where multi-devices are mapped to the same dm device. + +What: /sys/fs/f2fs/<disk>/allocate_section_policy +Date: August 2025 +Contact: "Liao Yuanhong" <liaoyuanhong@vivo.com> +Description: Controls write priority in multi-devices setups. A value of 0 means normal writing. + A value of 1 prioritizes writing to devices before the allocate_section_hint. A value of 2 + prioritizes writing to devices after the allocate_section_hint. The default is 0. + + =========================== ========================================================== + value description + allocate_section_policy = 0 Normal writing + allocate_section_policy = 1 Prioritize writing to section before allocate_section_hint + allocate_section_policy = 2 Prioritize writing to section after allocate_section_hint + =========================== ========================================================== diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon index 6791d879759e..b6b71db36ca7 100644 --- a/Documentation/ABI/testing/sysfs-kernel-mm-damon +++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon @@ -77,6 +77,13 @@ Description: Writing a keyword for a monitoring operations set ('vaddr' for Note that only the operations sets that listed in 'avail_operations' file are valid inputs. +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/addr_unit +Date: Aug 2025 +Contact: SeongJae Park <sj@kernel.org> +Description: Writing an integer to this file sets the 'address unit' + parameter of the given operations set of the context. Reading + the file returns the last-written 'address unit' value. + What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/sample_us Date: Mar 2022 Contact: SeongJae Park <sj@kernel.org> |