diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 22 | ||||
| -rw-r--r-- | Documentation/admin-guide/device-mapper/thin-provisioning.rst | 16 | ||||
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 38 | ||||
| -rw-r--r-- | Documentation/core-api/mm-api.rst | 1 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/apple,i2c.yaml | 5 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml | 46 | ||||
| -rw-r--r-- | Documentation/filesystems/f2fs.rst | 6 | ||||
| -rw-r--r-- | Documentation/kbuild/kconfig.rst | 8 |
8 files changed, 108 insertions, 34 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index bf03263b9f46..bc0e7fefc39d 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -861,3 +861,25 @@ Description: This is a read-only entry to show the value of sb.s_encoding_flags, SB_ENC_STRICT_MODE_FL 0x00000001 SB_ENC_NO_COMPAT_FALLBACK_FL 0x00000002 ============================ ========== + +What: /sys/fs/f2fs/<disk>/reserved_pin_section +Date: June 2025 +Contact: "Chao Yu" <chao@kernel.org> +Description: This threshold is used to control triggering garbage collection while + fallocating on pinned file, so, it can guarantee there is enough free + reserved section before preallocating on pinned file. + By default, the value is ovp_sections, especially, for zoned ufs, the + value is 1. + +What: /sys/fs/f2fs/<disk>/gc_boost_gc_multiple +Date: June 2025 +Contact: "Daeho Jeong" <daehojeong@google.com> +Description: Set a multiplier for the background GC migration window when F2FS GC is + boosted. The range should be from 1 to the segment count in a section. + Default: 5 + +What: /sys/fs/f2fs/<disk>/gc_boost_gc_greedy +Date: June 2025 +Contact: "Daeho Jeong" <daehojeong@google.com> +Description: Control GC algorithm for boost GC. 0: cost benefit, 1: greedy + Default: 1 diff --git a/Documentation/admin-guide/device-mapper/thin-provisioning.rst b/Documentation/admin-guide/device-mapper/thin-provisioning.rst index bafebf79da4b..b2fa49a5608a 100644 --- a/Documentation/admin-guide/device-mapper/thin-provisioning.rst +++ b/Documentation/admin-guide/device-mapper/thin-provisioning.rst @@ -80,11 +80,11 @@ less sharing than average you'll need a larger-than-average metadata device. As a guide, we suggest you calculate the number of bytes to use in the metadata device as 48 * $data_dev_size / $data_block_size but round it up -to 2MB if the answer is smaller. If you're creating large numbers of +to 2MiB if the answer is smaller. If you're creating large numbers of snapshots which are recording large amounts of change, you may find you need to increase this. -The largest size supported is 16GB: If the device is larger, +The largest size supported is 16GiB: If the device is larger, a warning will be issued and the excess space will not be used. Reloading a pool table @@ -107,13 +107,13 @@ Using an existing pool device $data_block_size gives the smallest unit of disk space that can be allocated at a time expressed in units of 512-byte sectors. -$data_block_size must be between 128 (64KB) and 2097152 (1GB) and a -multiple of 128 (64KB). $data_block_size cannot be changed after the +$data_block_size must be between 128 (64KiB) and 2097152 (1GiB) and a +multiple of 128 (64KiB). $data_block_size cannot be changed after the thin-pool is created. People primarily interested in thin provisioning -may want to use a value such as 1024 (512KB). People doing lots of -snapshotting may want a smaller value such as 128 (64KB). If you are +may want to use a value such as 1024 (512KiB). People doing lots of +snapshotting may want a smaller value such as 128 (64KiB). If you are not zeroing newly-allocated data, a larger $data_block_size in the -region of 256000 (128MB) is suggested. +region of 262144 (128MiB) is suggested. $low_water_mark is expressed in blocks of size $data_block_size. If free space on the data device drops below this level then a dm event @@ -291,7 +291,7 @@ i) Constructor error_if_no_space: Error IOs, instead of queueing, if no space. - Data block size must be between 64KB (128 sectors) and 1GB + Data block size must be between 64KiB (128 sectors) and 1GiB (2097152 sectors) inclusive. diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index c1a5cd991f2e..747a55abf494 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1828,6 +1828,27 @@ backtraces on all cpus. Format: 0 | 1 + hash_pointers= + [KNL,EARLY] + By default, when pointers are printed to the console + or buffers via the %p format string, that pointer is + "hashed", i.e. obscured by hashing the pointer value. + This is a security feature that hides actual kernel + addresses from unprivileged users, but it also makes + debugging the kernel more difficult since unequal + pointers can no longer be compared. The choices are: + Format: { auto | always | never } + Default: auto + + auto - Hash pointers unless slab_debug is enabled. + always - Always hash pointers (even if slab_debug is + enabled). + never - Never hash pointers. This option should only + be specified when debugging the kernel. Do + not use on production kernels. The boot + param "no_hash_pointers" is an alias for + this mode. + hashdist= [KNL,NUMA] Large hashes allocated during boot are distributed across NUMA nodes. Defaults on for 64-bit NUMA, off otherwise. @@ -4216,18 +4237,7 @@ no_hash_pointers [KNL,EARLY] - Force pointers printed to the console or buffers to be - unhashed. By default, when a pointer is printed via %p - format string, that pointer is "hashed", i.e. obscured - by hashing the pointer value. This is a security feature - that hides actual kernel addresses from unprivileged - users, but it also makes debugging the kernel more - difficult since unequal pointers can no longer be - compared. However, if this command-line option is - specified, then all normal pointers will have their true - value printed. This option should only be specified when - debugging the kernel. Please do not use on production - kernels. + Alias for "hash_pointers=never". nohibernate [HIBERNATION] Disable hibernation and resume. @@ -6644,6 +6654,10 @@ Documentation/admin-guide/mm/slab.rst. (slub_debug legacy name also accepted for now) + Using this option implies the "no_hash_pointers" + option which can be undone by adding the + "hash_pointers=always" option. + slab_max_order= [MM] Determines the maximum allowed order for slabs. A high setting may cause OOMs due to memory diff --git a/Documentation/core-api/mm-api.rst b/Documentation/core-api/mm-api.rst index 50cfc7842930..5063179cfc70 100644 --- a/Documentation/core-api/mm-api.rst +++ b/Documentation/core-api/mm-api.rst @@ -133,4 +133,3 @@ More Memory Management Functions .. kernel-doc:: mm/mmu_notifier.c .. kernel-doc:: mm/balloon_compaction.c .. kernel-doc:: mm/huge_memory.c -.. kernel-doc:: mm/io-mapping.c diff --git a/Documentation/devicetree/bindings/i2c/apple,i2c.yaml b/Documentation/devicetree/bindings/i2c/apple,i2c.yaml index 077d2a539c83..fed3e1b8c43f 100644 --- a/Documentation/devicetree/bindings/i2c/apple,i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/apple,i2c.yaml @@ -22,6 +22,11 @@ properties: compatible: items: - enum: + - apple,s5l8960x-i2c + - apple,t7000-i2c + - apple,s8000-i2c + - apple,t8010-i2c + - apple,t8015-i2c - apple,t8103-i2c - apple,t8112-i2c - apple,t6000-i2c diff --git a/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml b/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml index 32fd535a514a..1dec54fb00f3 100644 --- a/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml +++ b/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml @@ -9,21 +9,20 @@ title: Mediatek Universal Flash Storage (UFS) Controller maintainers: - Stanley Chu <stanley.chu@mediatek.com> -allOf: - - $ref: ufs-common.yaml - properties: compatible: enum: - mediatek,mt8183-ufshci - mediatek,mt8192-ufshci + - mediatek,mt8195-ufshci clocks: - maxItems: 1 + minItems: 1 + maxItems: 8 clock-names: - items: - - const: ufs + minItems: 1 + maxItems: 8 phys: maxItems: 1 @@ -33,6 +32,10 @@ properties: vcc-supply: true + mediatek,ufs-disable-mcq: + $ref: /schemas/types.yaml#/definitions/flag + description: The mask to disable MCQ (Multi-Circular Queue) for UFS host. + required: - compatible - clocks @@ -43,6 +46,37 @@ required: unevaluatedProperties: false +allOf: + - $ref: ufs-common.yaml + + - if: + properties: + compatible: + contains: + enum: + - mediatek,mt8195-ufshci + then: + properties: + clocks: + minItems: 8 + clock-names: + items: + - const: ufs + - const: ufs_aes + - const: ufs_tick + - const: unipro_sysclk + - const: unipro_tick + - const: unipro_mp_bclk + - const: ufs_tx_symbol + - const: ufs_mem_sub + else: + properties: + clocks: + maxItems: 1 + clock-names: + items: + - const: ufs + examples: - | #include <dt-bindings/clock/mt8183-clk.h> diff --git a/Documentation/filesystems/f2fs.rst b/Documentation/filesystems/f2fs.rst index 8eeb7ea14f61..e5bb89452aff 100644 --- a/Documentation/filesystems/f2fs.rst +++ b/Documentation/filesystems/f2fs.rst @@ -238,9 +238,9 @@ usrjquota=<file> Appoint specified file and type during mount, so that quota grpjquota=<file> information can be properly updated during recovery flow, prjjquota=<file> <quota file>: must be in root directory; jqfmt=<quota type> <quota type>: [vfsold,vfsv0,vfsv1]. -offusrjquota Turn off user journalled quota. -offgrpjquota Turn off group journalled quota. -offprjjquota Turn off project journalled quota. +usrjquota= Turn off user journalled quota. +grpjquota= Turn off group journalled quota. +prjjquota= Turn off project journalled quota. quota Enable plain user disk quota accounting. noquota Disable all plain disk quota option. alloc_mode=%s Adjust block allocation policy, which supports "reuse" diff --git a/Documentation/kbuild/kconfig.rst b/Documentation/kbuild/kconfig.rst index fc4e845bc249..d213c4f599a4 100644 --- a/Documentation/kbuild/kconfig.rst +++ b/Documentation/kbuild/kconfig.rst @@ -67,12 +67,12 @@ Environment variables for ``*config``: with its value when saving the configuration, instead of using the default, ``CONFIG_``. -Environment variables for ``{allyes/allmod/allno/rand}config``: +Environment variables for ``{allyes/allmod/allno/alldef/rand}config``: ``KCONFIG_ALLCONFIG`` - The allyesconfig/allmodconfig/allnoconfig/randconfig variants can also - use the environment variable KCONFIG_ALLCONFIG as a flag or a filename - that contains config symbols that the user requires to be set to a + The allyesconfig/allmodconfig/alldefconfig/allnoconfig/randconfig variants + can also use the environment variable KCONFIG_ALLCONFIG as a flag or a + filename that contains config symbols that the user requires to be set to a specific value. If KCONFIG_ALLCONFIG is used without a filename where KCONFIG_ALLCONFIG == "" or KCONFIG_ALLCONFIG == "1", ``make *config`` checks for a file named "all{yes/mod/no/def/random}.config" |