linux/rust/helpers
Linus Torvalds 416f99c3b1 Driver core changes for 6.19-rc1
- Arch Topology:
   - Move parse_acpi_topology() from arm64 to common code for reuse in RISC-V
 
 - CPU:
   - Expose housekeeping CPUs through /sys/devices/system/cpu/housekeeping
   - Print a newline (or 0x0A) instead of '(null)' reading
     /sys/devices/system/cpu/nohz_full when nohz_full= is not set
 
 - debugfs
   - Remove (broken) 'no-mount' mode
   - Remove redundant access mode checks in debugfs_get_tree() and
     debugfs_create_*() functions
 
 - Devres:
   - Remove unused devm_free_percpu() helper
   - Move devm_alloc_percpu() from device.h to devres.h
 
 - Firmware Loader:
   - Replace simple_strtol() with kstrtoint()
   - Do not call cancel_store() when no upload is in progress
 
 - kernfs:
   - Increase struct super_block::maxbytes to MAX_LFS_FILESIZE
   - Fix a missing unwind path in __kernfs_new_node()
 
 - Misc:
   - Increase the name size in struct auxiliary_device_id to 40 characters
   - Replace system_unbound_wq with system_dfl_wq and add WQ_PERCPU to
     alloc_workqueue()
 
 - Platform:
   - Replace ERR_PTR() with IOMEM_ERR_PTR() in platform ioremap functions
 
 - Rust:
   - Auxiliary:
     - Unregister auxiliary device on parent device unbind
     - Move parent() to impl Device; implement device context aware parent() for
       Device<Bound>
     - Illustrate how to safely obtain a driver's device private data when
       calling from an auxiliary driver into the parant device driver
 
   - DebugFs:
     - Implement support for binary large objects
 
   - Device:
     - Let probe() return the driver's device private data as pinned initializer,
       i.e. impl PinInit<Self, Error>
     - Implement safe accessor for a driver's device private data for
       Device<Bound> (returned reference can't out-live driver binding and
       guarantees the correct private data type)
     - Implement AsBusDevice trait, to be used by class device abstractions to
       derive the bus device type of the parent device
 
   - DMA:
     - Store raw pointer of allocation as NonNull
     - Use start_ptr() and start_ptr_mut() to inherit correct mutability of self
 
   - FS:
     - Add file::Offset type alias
 
   - I2C:
     - Add abstractions for I2C device / driver infrastructure
     - Implement abstractions for manual I2C device registrations
 
   - I/O:
     - Use "kernel vertical" style for imports
     - Define ResourceSize as resource_size_t
     - Move ResourceSize to top-level I/O module
     - Add type alias for phys_addr_t
     - Implement Rust version of read_poll_timeout_atomic()
 
   - PCI:
     - Use "kernel vertical" style for imports
     - Move I/O and IRQ infrastructure to separate files
     - Add support for PCI interrupt vectors
     - Implement TryInto<IrqRequest<'a>> for IrqVector<'a> to convert an
       IrqVector bound to specific pci::Device into an IrqRequest bound to the
       same pci::Device's parent Device
     - Leverage pin_init_scope() to get rid of redundant Result in IRQ methods
 
   - PinInit:
     - Add {pin_}init_scope() to execute code before creating an initializer
 
   - Platform:
     - Leverage pin_init_scope() to get rid of redundant Result in IRQ methods
 
   - Timekeeping:
     - Implement abstraction of udelay()
 
   - Uaccess:
     - Implement read_slice_partial() and read_slice_file() for UserSliceReader
     - Implement write_slice_partial() and write_slice_file() for UserSliceWriter
 
 - sysfs
   - Prepare the constification of struct attribute
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYKAB0WIQS2q/xV6QjXAdC7k+1FlHeO1qrKLgUCaTAehwAKCRBFlHeO1qrK
 LmzvAP0TWwKUGIduccknIa1AFvBM92lWVZptSysotv3SLFZq3wD9GBLIENt1DkEk
 s+GBqbobPgoyaodaysqLQ/SNqF9TcAM=
 =Wutw
 -----END PGP SIGNATURE-----

Merge tag 'driver-core-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core

Pull driver core updates from Danilo Krummrich:
 "Arch Topology:
   - Move parse_acpi_topology() from arm64 to common code for reuse in
     RISC-V

  CPU:
   - Expose housekeeping CPUs through /sys/devices/system/cpu/housekeeping
   - Print a newline (or 0x0A) instead of '(null)' reading
     /sys/devices/system/cpu/nohz_full when nohz_full= is not set

  debugfs
   - Remove (broken) 'no-mount' mode
   - Remove redundant access mode checks in debugfs_get_tree() and
     debugfs_create_*() functions

  Devres:
   - Remove unused devm_free_percpu() helper
   - Move devm_alloc_percpu() from device.h to devres.h

  Firmware Loader:
   - Replace simple_strtol() with kstrtoint()
   - Do not call cancel_store() when no upload is in progress

  kernfs:
   - Increase struct super_block::maxbytes to MAX_LFS_FILESIZE
   - Fix a missing unwind path in __kernfs_new_node()

  Misc:
   - Increase the name size in struct auxiliary_device_id to 40
     characters
   - Replace system_unbound_wq with system_dfl_wq and add WQ_PERCPU to
     alloc_workqueue()

  Platform:
   - Replace ERR_PTR() with IOMEM_ERR_PTR() in platform ioremap
     functions

  Rust:
   - Auxiliary:
      - Unregister auxiliary device on parent device unbind
      - Move parent() to impl Device; implement device context aware
        parent() for Device<Bound>
      - Illustrate how to safely obtain a driver's device private data
        when calling from an auxiliary driver into the parant device
        driver

   - DebugFs:
      - Implement support for binary large objects

   - Device:
      - Let probe() return the driver's device private data as pinned
        initializer, i.e. impl PinInit<Self, Error>
      - Implement safe accessor for a driver's device private data for
        Device<Bound> (returned reference can't out-live driver binding
        and guarantees the correct private data type)
      - Implement AsBusDevice trait, to be used by class device
        abstractions to derive the bus device type of the parent device

   - DMA:
      - Store raw pointer of allocation as NonNull
      - Use start_ptr() and start_ptr_mut() to inherit correct
        mutability of self

   - FS:
      - Add file::Offset type alias

   - I2C:
      - Add abstractions for I2C device / driver infrastructure
      - Implement abstractions for manual I2C device registrations

   - I/O:
      - Use "kernel vertical" style for imports
      - Define ResourceSize as resource_size_t
      - Move ResourceSize to top-level I/O module
      - Add type alias for phys_addr_t
      - Implement Rust version of read_poll_timeout_atomic()

   - PCI:
      - Use "kernel vertical" style for imports
      - Move I/O and IRQ infrastructure to separate files
      - Add support for PCI interrupt vectors
      - Implement TryInto<IrqRequest<'a>> for IrqVector<'a> to convert
        an IrqVector bound to specific pci::Device into an IrqRequest
        bound to the same pci::Device's parent Device
      - Leverage pin_init_scope() to get rid of redundant Result in IRQ
        methods

   - PinInit:
      - Add {pin_}init_scope() to execute code before creating an
        initializer

   - Platform:
      - Leverage pin_init_scope() to get rid of redundant Result in IRQ
        methods

   - Timekeeping:
      - Implement abstraction of udelay()

   - Uaccess:
      - Implement read_slice_partial() and read_slice_file() for
        UserSliceReader
      - Implement write_slice_partial() and write_slice_file() for
        UserSliceWriter

  sysfs:
   - Prepare the constification of struct attribute"

* tag 'driver-core-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (75 commits)
  rust: pci: fix build failure when CONFIG_PCI_MSI is disabled
  debugfs: Fix default access mode config check
  debugfs: Remove broken no-mount mode
  debugfs: Remove redundant access mode checks
  driver core: Check drivers_autoprobe for all added devices
  driver core: WQ_PERCPU added to alloc_workqueue users
  driver core: replace use of system_unbound_wq with system_dfl_wq
  tick/nohz: Expose housekeeping CPUs in sysfs
  tick/nohz: avoid showing '(null)' if nohz_full= not set
  sysfs/cpu: Use DEVICE_ATTR_RO for nohz_full attribute
  kernfs: fix memory leak of kernfs_iattrs in __kernfs_new_node
  fs/kernfs: raise sb->maxbytes to MAX_LFS_FILESIZE
  mod_devicetable: Bump auxiliary_device_id name size
  sysfs: simplify attribute definition macros
  samples/kobject: constify 'struct foo_attribute'
  samples/kobject: add is_visible() callback to attribute group
  sysfs: attribute_group: enable const variants of is_visible()
  sysfs: introduce __SYSFS_FUNCTION_ALTERNATIVE()
  sysfs: transparently handle const pointers in ATTRIBUTE_GROUPS()
  sysfs: attribute_group: allow registration of const attribute
  ...
2025-12-05 21:29:02 -08:00
..
atomic.c rust: Introduce atomic API helpers 2025-09-15 09:38:32 +02:00
auxiliary.c rust: auxiliary: use generic device drvdata accessors 2025-07-09 00:04:33 +02:00
barrier.c rust: sync: Add memory barriers 2025-09-15 09:38:34 +02:00
binder.c rust_binder: add Rust Binder driver 2025-09-19 09:40:46 +02:00
bitmap.c rust: add bindings for bitmap.h 2025-09-22 15:52:44 -04:00
bitops.c rust: add bindings for bitops.h 2025-09-22 15:52:44 -04:00
blk.c rust: kbuild: auto generate helper exports 2024-08-19 11:09:02 +02:00
bug.c rust: Add warn_on macro 2025-07-23 02:05:58 +02:00
build_assert.c
build_bug.c rust: helpers: remove unnecessary header includes 2024-10-21 17:35:59 +02:00
clk.c rust: clk: Add helpers for Rust code 2025-05-19 12:55:40 +05:30
completion.c rust: completion: implement initial abstraction 2025-06-13 23:46:56 +02:00
cpu.c rust: cpu: Add CpuId::current() to retrieve current CPU ID 2025-06-12 10:31:28 +05:30
cpufreq.c rust: cpufreq: Add initial abstractions for cpufreq framework 2025-05-20 11:21:10 +05:30
cpumask.c rust: cpumask: Add few more helpers 2025-05-19 12:55:40 +05:30
cred.c rust: cred: add Rust abstraction for `struct cred` 2024-09-30 13:02:28 +02:00
device.c rust: device: add drvdata accessors 2025-07-09 00:04:33 +02:00
dma.c rust: dma: add DMA addressing capabilities 2025-07-19 19:36:51 +02:00
drm.c rust: drm: gem: Add GEM object abstraction 2025-04-28 10:08:23 +02:00
err.c rust: helpers: remove unnecessary header includes 2024-10-21 17:35:59 +02:00
fs.c rust: file: add Rust abstraction for `struct file` 2024-09-30 13:02:28 +02:00
helpers.c rust: pwm: Add Kconfig and basic data structures 2025-11-07 10:03:54 +01:00
io.c rust: io: mem: add a generic iomem abstraction 2025-07-20 19:43:14 +02:00
irq.c rust: irq: add support for non-threaded IRQs and handlers 2025-08-12 20:22:00 +02:00
jump_label.c rust: add static_branch_unlikely for static_key_false 2024-11-04 16:21:44 -05:00
kunit.c rust: helpers: remove unnecessary header includes 2024-10-21 17:35:59 +02:00
maple_tree.c rust: maple_tree: add MapleTree 2025-09-21 14:22:19 -07:00
mm.c mm: rust: add lock_vma_under_rcu 2025-05-11 17:48:24 -07:00
mutex.c Generic: 2025-06-02 12:24:58 -07:00
of.c rust: device: implement FwNode::is_of_node() 2025-06-25 18:10:12 +02:00
page.c rust_binder: add Rust Binder driver 2025-09-19 09:40:46 +02:00
pci.c rust: pci: fix build failure when CONFIG_PCI_MSI is disabled 2025-12-04 00:24:47 +13:00
pid_namespace.c rust: add PidNamespace 2024-10-08 15:44:36 +02:00
platform.c rust: platform: use generic device drvdata accessors 2025-07-09 00:04:33 +02:00
poll.c poll: rust: allow poll_table ptrs to be null 2025-07-14 14:12:24 +02:00
processor.c rust: Add cpu_relax() helper 2025-08-21 16:58:07 +02:00
property.c rust: device: Create FwNode abstraction for accessing device properties 2025-06-12 23:56:42 +02:00
pwm.c rust: pwm: Add Kconfig and basic data structures 2025-11-07 10:03:54 +01:00
rbtree.c rust: rbtree: add red-black tree implementation backed by the C version 2024-08-31 17:35:08 +02:00
rcu.c rust: add rcu abstraction 2024-12-20 17:19:26 +01:00
refcount.c rust: implement `kernel::sync::Refcount` 2025-09-15 09:38:35 +02:00
regulator.c rust: regulator: add devm_enable and devm_enable_optional 2025-09-10 21:02:16 +01:00
scatterlist.c rust: scatterlist: Add abstraction for sg_table 2025-09-04 23:33:50 +02:00
security.c rust_binder: add Rust Binder driver 2025-09-19 09:40:46 +02:00
signal.c rust: helpers: remove unnecessary header includes 2024-10-21 17:35:59 +02:00
slab.c rust: support large alignments in allocations 2025-09-13 16:54:46 -07:00
spinlock.c rust: sync: Add lock::Backend::assert_is_held() 2024-12-19 14:04:42 -08:00
sync.c rust: lockdep: Use Pin for all LockClassKey usages 2025-03-08 00:55:04 +01:00
task.c rust: task: Add Rust version of might_sleep() 2025-06-24 15:53:50 -07:00
time.c rust: add udelay() function 2025-11-04 13:25:29 +01:00
uaccess.c rust: kbuild: auto generate helper exports 2024-08-19 11:09:02 +02:00
usb.c rust: usb: add basic USB abstractions 2025-09-24 13:13:04 +02:00
vmalloc.c rust: support large alignments in allocations 2025-09-13 16:54:46 -07:00
wait.c rust: helpers: remove unnecessary header includes 2024-10-21 17:35:59 +02:00
workqueue.c rust: helpers: remove unnecessary header includes 2024-10-21 17:35:59 +02:00
xarray.c rust: xarray: Add an abstraction for XArray 2025-05-01 11:37:59 +02:00