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2025-09-08rust: drm: gem: Simplify use of genericsLyude Paul
Now that my rust skills have been honed, I noticed that there's a lot of generics in our gem bindings that don't actually need to be here. Currently the hierarchy of traits in our gem bindings looks like this: * Drivers implement: * BaseDriverObject<T: DriverObject> (has the callbacks) * DriverObject (has the drm::Driver type) * Crate implements: * IntoGEMObject for Object<T> where T: DriverObject Handles conversion to/from raw object pointers * BaseObject for T where T: IntoGEMObject Provides methods common to all gem interfaces Also of note, this leaves us with two different drm::Driver associated types: * DriverObject::Driver * IntoGEMObject::Driver I'm not entirely sure of the original intent here unfortunately (if anyone is, please let me know!), but my guess is that the idea would be that some objects can implement IntoGEMObject using a different ::Driver than DriverObject - presumably to enable the usage of gem objects from different drivers. A reasonable usecase of course. However - if I'm not mistaken, I don't think that this is actually how things would go in practice. Driver implementations are of course implemented by their associated drivers, and generally drivers are not linked to each-other when building the kernel. Which is to say that even in a situation where we would theoretically deal with gem objects from another driver, we still wouldn't have access to its drm::driver::Driver implementation. It's more likely we would simply want a variant of gem objects in such a situation that have no association with a drm::driver::Driver type. Taking that into consideration, we can assume the following: * Anything that implements BaseDriverObject will implement DriverObject In other words, all BaseDriverObjects indirectly have an associated ::Driver type - so the two traits can be combined into one with no generics. * Not everything that implements IntoGEMObject will have an associated ::Driver, and that's OK. And with this, we now can do quite a bit of cleanup with the use of generics here. As such, this commit: * Removes the generics on BaseDriverObject * Moves DriverObject::Driver into BaseDriverObject * Removes DriverObject * Removes IntoGEMObject::Driver * Add AllocImpl::Driver, which we can use as a binding to figure out the correct File type for BaseObject Leaving us with a simpler trait hierarchy that now looks like this: * Drivers implement: BaseDriverObject * Crate implements: * IntoGEMObject for Object<T> where T: DriverObject * BaseObject for T where T: IntoGEMObject Which makes the code a lot easier to understand and build on :). Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Acked-by: Danilo Krummrich <dakr@kernel.org> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Link: https://lore.kernel.org/r/20250908185239.135849-2-lyude@redhat.com Signed-off-by: Alice Ryhl <aliceryhl@google.com>
2025-09-08rust: cpufreq: replace `MaybeUninit::zeroed().assume_init()` with ↵Benno Lossin
`pin_init::zeroed()` All types in `bindings` implement `Zeroable` if they can, so use `pin_init::zeroed` instead of relying on `unsafe` code. If this ends up not compiling in the future, something in bindgen or on the C side changed and is most likely incorrect. Signed-off-by: Benno Lossin <lossin@kernel.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-09-08rust: derive `Zeroable` for all structs & unions generated by bindgen where ↵Benno Lossin
possible Using the `--with-derive-custom-{struct,union}` option of bindgen, add `#[derive(MaybeZeroable)]` to every struct & union. This makes those types implement `Zeroable` if all their fields implement it. Sadly bindgen doesn't add custom derives to the `__BindgenBitfieldUnit` struct. So manually implement `Zeroable` for that. Signed-off-by: Benno Lossin <lossin@kernel.org> Reviewed-by: Alice Ryhl <aliceryhl@google.com> [ Formatted comment. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-09-08rust: add `pin-init` as a dependency to `bindings` and `uapi`Benno Lossin
This allows `bindings` and `uapi` to implement `Zeroable` and use other items from pin-init. Co-developed-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Link: https://rust-for-linux.zulipchat.com/#narrow/channel/291565-Help/topic/Zeroable.20trait.20for.20C.20structs/near/510264158 Signed-off-by: Benno Lossin <lossin@kernel.org> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-09-08rust: task: update ARef and AlwaysRefCounted imports from sync::arefShankari Anand
Update call sites in `task.rs` to import `ARef` and `AlwaysRefCounted` from `sync::aref` instead of `types`. This aligns with the ongoing effort to move `ARef` and `AlwaysRefCounted` to sync. Suggested-by: Benno Lossin <lossin@kernel.org> Link: https://github.com/Rust-for-Linux/linux/issues/1173 Signed-off-by: Shankari Anand <shankari.ak0208@gmail.com> Reviewed-by: Benno Lossin <lossin@kernel.org> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-09-08rust: prelude: re-export `core::mem::{align,size}_of{,_val}`Miguel Ojeda
Rust 1.80.0 added: align_of align_of_val size_of size_of_val from `core::mem` to the prelude [1]. For similar reasons, and to minimize potential confusion when code may work in later versions but not in our current minimum, add it to our prelude too. Link: https://github.com/rust-lang/rust/pull/123168 [1] Link: https://lore.kernel.org/rust-for-linux/CANiq72kOLYR2A95o0ji2mDmEqOKh9e9_60zZKmgF=vZmsW6DRg@mail.gmail.com/ [2] Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Benno Lossin <lossin@kernel.org> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-09-08rust: error: add C header linksOnur Özkan
The error codes come from several headers. Thus, add the other header links. Signed-off-by: Onur Özkan <work@onurozkan.dev> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> [ Sorted headers. Added line breaks. Reworded commit message. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-09-08rust: warn if `srctree/` links do not existMiguel Ojeda
`srctree/` links may point to nonexistent files, e.g. due to renames that missed to update the files or simply because of typos. Since they can be easily checked for validity, do so and print a warning in the file does not exist. This found the following cases already in-tree: warning: srctree/ link to include/linux/blk_mq.h does not exist warning: srctree/ link to include/linux/drm/drm_gem.h does not exist warning: srctree/ link to include/linux/drm/drm_drv.h does not exist warning: srctree/ link to include/linux/drm/drm_ioctl.h does not exist warning: srctree/ link to include/linux/drm/drm_file.h does not exist warning: srctree/ link to include/linux/drm/drm_device.h does not exist Inspired-by: Onur Özkan <work@onurozkan.dev> Link: https://lore.kernel.org/rust-for-linux/CANiq72=xCYA7z7_rxpzzKkkhJs6m7L_xEaLMuArVn3ZAcyeHdA@mail.gmail.com/ Reviewed-by: Onur Özkan <work@onurozkan.dev> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Tested-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-09-08rust: drm: fix `srctree/` linksMiguel Ojeda
These `srctree/` links pointed inside `linux/`, but they are directly under `drm/`. Thus fix them. This cleans a future warning that will check our `srctree/` links. Cc: stable@vger.kernel.org Fixes: a98a73be9ee9 ("rust: drm: file: Add File abstraction") Fixes: c284d3e42338 ("rust: drm: gem: Add GEM object abstraction") Fixes: 07c9016085f9 ("rust: drm: add driver abstractions") Fixes: 1e4b8896c0f3 ("rust: drm: add device abstraction") Fixes: 9a69570682b1 ("rust: drm: ioctl: Add DRM ioctl abstraction") Acked-by: Danilo Krummrich <dakr@kernel.org> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-09-08rust: block: fix `srctree/` linksMiguel Ojeda
This `srctree/` link pointed to a file with an underscore, but the header used a dash instead. Thus fix it. This cleans a future warning that will check our `srctree/` links. Cc: stable@vger.kernel.org Fixes: 3253aba3408a ("rust: block: introduce `kernel::block::mq` module") Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-09-08rust: sync: Update ARef and AlwaysRefCounted imports from sync::arefShankari Anand
Update the in-file reference of sync/aref.rs to import `ARef` and `AlwaysRefCounted` from `sync::aref` instead of `types`. This aligns with the ongoing effort to move `ARef` and `AlwaysRefCounted` to sync. Suggested-by: Benno Lossin <lossin@kernel.org> Link: https://github.com/Rust-for-Linux/linux/issues/1173 Signed-off-by: Shankari Anand <shankari.ak0208@gmail.com> Reviewed-by: Benno Lossin <lossin@kernel.org> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-09-08Merge tag 'alloc-next-v6.18-2025-09-04' of ↵Miguel Ojeda
https://github.com/Rust-for-Linux/linux into rust-next Pull alloc and DMA updates from Danilo Krummrich: Allocator: - Provide information about the minimum alignment guarantees of 'Kmalloc', 'Vmalloc' and 'KVmalloc'. - Take minimum alignment guarantees of allocators for 'ForeignOwnable' into account. - Remove the 'allocator_test' incl. 'Cmalloc'. Box: - Implement 'Box::pin_slice()', which constructs a pinned slice of elements. Vec: - Simplify KUnit test module name to 'rust_kvec'. - Add doc-test for 'Vec::as_slice()'. - Constify various methods. DMA: - Update 'ARef' and 'AlwaysRefCounted' imports. MISC: - Remove support for unused host '#[test]'s. - Constify 'ArrayLayout::new_unchecked()'. * tag 'alloc-next-v6.18-2025-09-04' of https://github.com/Rust-for-Linux/linux: rust: alloc: remove `allocator_test` rust: kernel: remove support for unused host `#[test]`s rust: alloc: implement Box::pin_slice() rust: alloc: add ARCH_KMALLOC_MINALIGN to bindgen blocklist rust: dma: Update ARef and AlwaysRefCounted imports from sync::aref rust: alloc: take the allocator into account for FOREIGN_ALIGN rust: alloc: specify the minimum alignment of each allocator rust: make `kvec::Vec` functions `const fn` rust: make `ArrayLayout::new_unchecked` a `const fn` rust: alloc: kvec: simplify KUnit test module name to "rust_kvec" rust: alloc: kvec: add doc example for as_slice method
2025-09-06Merge tag 'rust-fixes-6.17-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux Pull rust fixes from Miguel Ojeda: - Two changes to prepare for the future Rust 1.91.0 release (expected 2025-10-30, currently in nightly): a target specification format change and a renamed, soon-to-be-stabilized 'core' function. * tag 'rust-fixes-6.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: rust: support Rust >= 1.91.0 target spec rust: use the new name Location::file_as_c_str() in Rust >= 1.91.0
2025-09-05regulator: pf530x: NXP PF530x regulator driverMark Brown
Merge series from Woodrow Douglass <wdouglass@carnegierobotics.com>: I wrote this driver to read settings and state from the nxp pf530x regulator. Please consider it for inclusion, any criticism is welcome.
2025-09-04rust: scatterlist: Add abstraction for sg_tableDanilo Krummrich
Add a safe Rust abstraction for the kernel's scatter-gather list facilities (`struct scatterlist` and `struct sg_table`). This commit introduces `SGTable<T>`, a wrapper that uses a generic parameter to provide compile-time guarantees about ownership and lifetime. The abstraction provides two primary states: - `SGTable<Owned<P>>`: Represents a table whose resources are fully managed by Rust. It takes ownership of a page provider `P`, allocates the underlying `struct sg_table`, maps it for DMA, and handles all cleanup automatically upon drop. The DMA mapping's lifetime is tied to the associated device using `Devres`, ensuring it is correctly unmapped before the device is unbound. - `SGTable<Borrowed>` (or just `SGTable`): A zero-cost representation of an externally managed `struct sg_table`. It is created from a raw pointer using `SGTable::from_raw()` and provides a lifetime-bound reference (`&'a SGTable`) for operations like iteration. The API exposes a safe iterator that yields `&SGEntry` references, allowing drivers to easily access the DMA address and length of each segment in the list. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Tested-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Co-developed-by: Abdiel Janulgue <abdiel.janulgue@gmail.com> Signed-off-by: Abdiel Janulgue <abdiel.janulgue@gmail.com> Link: https://lore.kernel.org/r/20250828133323.53311-4-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-09-04rust: dma: add type alias for bindings::dma_addr_tDanilo Krummrich
Add a type alias for bindings::dma_addr_t (DmaAddress), such that we do not have to access bindings directly. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Suggested-by: Alice Ryhl <aliceryhl@google.com> Link: https://lore.kernel.org/r/20250828133323.53311-3-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-09-04rust: dma: implement DataDirectionDanilo Krummrich
Add the `DataDirection` struct, a newtype wrapper around the C `enum dma_data_direction`. This provides a type-safe Rust interface for specifying the direction of DMA transfers. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://lore.kernel.org/r/20250828133323.53311-2-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-09-04rust: alloc: kvec: implement AsPageIter for VVecDanilo Krummrich
Implement AsPageIter for VVec; this allows to iterate and borrow the backing pages of a VVec. This, for instance, is useful in combination with VVec backing a scatterlist. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Tested-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Link: https://lore.kernel.org/r/20250820145434.94745-8-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-09-04rust: alloc: layout: implement ArrayLayout::size()Danilo Krummrich
Provide a convenience method for ArrayLayout to calculate the size of the ArrayLayout in bytes. Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Tested-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Abdiel Janulgue <abdiel.janulgue@gmail.com> Link: https://lore.kernel.org/r/20250820145434.94745-7-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-09-04rust: alloc: kbox: implement AsPageIter for VBoxDanilo Krummrich
Implement AsPageIter for VBox; this allows to iterate and borrow the backing pages of a VBox. This, for instance, is useful in combination with VBox backing a scatterlist. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Tested-by: Alexandre Courbot <acourbot@nvidia.com> Link: https://lore.kernel.org/r/20250820145434.94745-6-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-09-04rust: page: define trait AsPageIterDanilo Krummrich
The AsPageIter trait provides a common interface for types that provide a page iterator, such as VmallocPageIter. Subsequent patches will leverage this to let VBox and VVec provide a VmallocPageIter though this trait. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Tested-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Link: https://lore.kernel.org/r/20250820145434.94745-5-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-09-04rust: alloc: implement VmallocPageIterDanilo Krummrich
Introduce the VmallocPageIter type; an instance of VmallocPageIter may be exposed by owners of vmalloc allocations to provide borrowed access to its backing pages. For instance, this is useful to access and borrow the backing pages of allocation primitives, such as Box and Vec, backing a scatterlist. Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Tested-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Suggested-by: Alice Ryhl <aliceryhl@google.com> Link: https://lore.kernel.org/r/20250820145434.94745-4-dakr@kernel.org [ Drop VmallocPageIter::base_address(), move to allocator/iter.rs and stub VmallocPageIter for allocator_test.rs. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-09-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.17-rc5). No conflicts. Adjacent changes: include/net/sock.h c51613fa276f ("net: add sk->sk_drop_counters") 5d6b58c932ec ("net: lockless sock_i_ino()") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-04Merge tag 'opp-updates-6.18' of ↵Rafael J. Wysocki
git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm Merge OPP (operating performance points) updates for 6.18 from Viresh Kumar: "- Add support to find OPP for a set of keys (Krishna Chaitanya Chundru). - Minor optimization to OPP Rust implementation (Onur Özkan)." * tag 'opp-updates-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm: OPP: Add support to find OPP for a set of keys rust: opp: use to_result for error handling
2025-09-04Merge tag 'cpufreq-arm-updates-6.18' of ↵Rafael J. Wysocki
git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm Merge CPUFreq updates for 6.18 from Viresh Kumar: "- Minor improvements to Rust Cpumask APIs (Alice Ryhl, Baptiste Lepers, and Shankari Anand). - Minor cleanups and optimizations to various cpufreq drivers (Akhilesh Patil, BowenYu, Dennis Beier, Liao Yuanhong, Zihuan Zhang, Florian Fainelli, Taniya Das, Md Sadre Alam, and Christian Marangi). - Enhancements for TI cpufreq driver (Judith Mendez, and Paresh Bhagat). - Enhancements for mediatek cpufreq driver (Nicolas Frattaroli). - Remove outdated cpufreq-dt.txt (Frank Li). - Update MAINTAINERS for virtual-cpufreq maintainer (Saravana Kannan)." * tag 'cpufreq-arm-updates-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm: (28 commits) cpufreq: mediatek: avoid redundant conditions cpufreq/longhaul: handle NULL policy in longhaul_exit cpufreq: tegra186: Use scope-based cleanup helper cpufreq: mediatek: Use scope-based cleanup helper cpufreq: s5pv210: Use scope-based cleanup helper cpufreq: CPPC: Use scope-based cleanup helper cpufreq: brcmstb-avs: Use scope-based cleanup helper dt-bindings: Remove outdated cpufreq-dt.txt arm64: dts: ti: k3-am62p: Fix supported hardware for 1GHz OPP cpufreq: ti: Allow all silicon revisions to support OPPs cpufreq: ti: Support more speed grades on AM62Px SoC cpufreq: ti: Add support for AM62D2 cpufreq: dt-platdev: Blacklist ti,am62d2 SoC rust: opp: update ARef and AlwaysRefCounted imports from sync::aref cpufreq: mediatek-hw: don't use error path on NULL fdvfs cpufreq: scmi: Account for malformed DT in scmi_dev_used_by_cpus() rust: cpumask: Mark CpumaskVar as transparent rust: cpumask: rename CpumaskVar::as[_mut]_ref to from_raw[_mut] dt-bindings: cpufreq: cpufreq-qcom-hw: Add QCS615 compatible MAINTAINERS: Add myself as virtual-cpufreq maintainer ...
2025-09-04rust: alloc: vmalloc: implement Vmalloc::to_page()Danilo Krummrich
Implement an abstraction of vmalloc_to_page() for subsequent use in the AsPageIter implementation of VBox and VVec. Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Tested-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Link: https://lore.kernel.org/r/20250820145434.94745-3-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-09-04rust: page: implement BorrowedPageDanilo Krummrich
Currently, a Page always owns the underlying struct page. However, sometimes a struct page may be owned by some other entity, e.g. a vmalloc allocation. Hence, introduce BorrowedPage to support such cases, until the Ownable solution [1] lands. This is required by the scatterlist abstractions. Acked-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Tested-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Link: https://lore.kernel.org/rust-for-linux/ZnCzLIly3DRK2eab@boqun-archlinux/ [1] Link: https://lore.kernel.org/r/20250820145434.94745-2-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-09-04rust: time: Implement basic arithmetic operations for DeltaLyude Paul
While rvkms is only going to be using a few of these, since Deltas are basically the same as i64 it's easy enough to just implement all of the basic arithmetic operations for Delta types. Keep in mind there's one quirk here - the kernel has no support for i64 % i64 on 32 bit platforms, the closest we have is i64 % i32 through div_s64_rem(). So, instead of implementing ops::Rem or ops::RemAssign we simply provide Delta::rem_nanos(). Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: FUJITA Tomonori <fujita.tomonori@gmail.com> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250820203704.731588-3-lyude@redhat.com Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
2025-09-04rust: time: Implement Add<Delta>/Sub<Delta> for InstantLyude Paul
In order to copy the behavior rust currently follows for basic arithmetic operations and panic if the result of an addition or subtraction results in a value that would violate the invariants of Instant, but only if the kernel has overflow checking for rust enabled. Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: FUJITA Tomonori <fujita.tomonori@gmail.com> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Link: https://lore.kernel.org/r/20250820203704.731588-2-lyude@redhat.com Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
2025-09-04rust: hrtimer: Add HrTimer::expires()Lyude Paul
Add a simple callback for retrieving the current expiry time for an HrTimer. In rvkms, we use the HrTimer expiry value in order to calculate the approximate vblank timestamp during each emulated vblank interrupt. Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250821193259.964504-8-lyude@redhat.com Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
2025-09-04rust: time: Add Instant::from_ktime()Lyude Paul
For implementing Rust bindings which can return a point in time. Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: FUJITA Tomonori <fujita.tomonori@gmail.com> Link: https://lore.kernel.org/r/20250821193259.964504-7-lyude@redhat.com Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
2025-09-04rust: hrtimer: Add forward_now() to HrTimer and HrTimerCallbackContextLyude Paul
Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250821193259.964504-6-lyude@redhat.com Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
2025-09-04rust: hrtimer: Add HrTimerCallbackContext and ::forward()Lyude Paul
With Linux's hrtimer API, there's a number of methods that can only be called in two situations: * When we have exclusive access to the hrtimer and it is not currently active * When we're within the context of an hrtimer callback context This commit handles the second situation and implements hrtimer_forward() support in the context of a timer callback. We do this by introducing a HrTimerCallbackContext type which is provided to users during the RawHrTimerCallback::run() callback, and then add a forward() function to the type. Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250821193259.964504-5-lyude@redhat.com Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
2025-09-04rust: hrtimer: Add HrTimer::raw_forward() and forward()Lyude Paul
Within the hrtimer API there are quite a number of functions that can only be safely called from one of two contexts: * When we have exclusive access to the hrtimer and the timer is not active. * When we're within the hrtimer's callback context as it is being executed. This commit adds bindings for hrtimer_forward() for the first such context, along with HrTimer::raw_forward() for later use in implementing the hrtimer_forward() in the latter context. Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250821193259.964504-4-lyude@redhat.com Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
2025-09-04rust: hrtimer: Add HrTimerInstantLyude Paul
Since we want to add HrTimer methods that can accept Instants, we will want to make sure that for each method we are using the correct Clocksource for the given HrTimer. This would get a bit overly-verbose, so add a simple HrTimerInstant type-alias to handle this for us. Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Link: https://lore.kernel.org/r/20250821193259.964504-3-lyude@redhat.com Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
2025-09-04rust: hrtimer: Document the return value for HrTimerHandle::cancel()Lyude Paul
Just a drive-by fix I noticed: we don't actually document what the return value from cancel() does, so do that. Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Link: https://lore.kernel.org/r/20250821193259.964504-2-lyude@redhat.com Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
2025-09-03rust: phy: use to_result for error handlingOnur Özkan
Simplifies error handling by replacing the manual check of the return value with the `to_result` helper. Signed-off-by: Onur Özkan <work@onurozkan.dev> Reviewed-by: Elle Rhumsaa <elle@weathered-steel.dev> Reviewed-by: Trevor Gross <tmgross@umich.edu> Link: https://patch.msgid.link/20250821091235.800-1-work@onurozkan.dev Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-02rust: block: add remote completion to `Request`Andreas Hindborg
Allow users of rust block device driver API to schedule completion of requests via `blk_mq_complete_request_remote`. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-16-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-09-02rust: block: mq: fix spelling in a safety commentAndreas Hindborg
Add code block quotes to a safety comment. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-15-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-09-02rust: block: add `GenDisk` private data supportAndreas Hindborg
Allow users of the rust block device driver API to install private data in the `GenDisk` structure. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-14-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-09-02rnull: enable configuration via `configfs`Andreas Hindborg
Allow rust null block devices to be configured and instantiated via `configfs`. Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-13-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-09-02rust: block: add block related constantsAndreas Hindborg
Add a few block subsystem constants to the rust `kernel::block` name space. This makes it easier to access the constants from rust code. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-11-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-09-02rust: block: remove trait bound from `mq::Request` definitionAndreas Hindborg
Remove the trait bound `T:Operations` from `mq::Request`. The bound is not required, so remove it to reduce complexity. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-10-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-09-02rust: block: remove `RawWriter`Andreas Hindborg
`RawWriter` is now dead code, so remove it. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-9-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-09-02rust: block: use `NullTerminatedFormatter`Andreas Hindborg
Use the new `NullTerminatedFormatter` to write the name of a `GenDisk` to the name buffer. This new formatter automatically adds a trailing null marker after the written characters, so we don't need to append that at the call site any longer. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-8-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-09-02rust: block: normalize imports for `gen_disk.rs`Andreas Hindborg
Clean up the import statements in `gen_disk.rs` to make the code easier to maintain. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-7-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-09-02rust: configfs: re-export `configfs_attrs` from `configfs` moduleAndreas Hindborg
Re-export `configfs_attrs` from `configfs` module, so that users can import the macro from the `configfs` module rather than the root of the `kernel` crate. Also update users to import from the new path. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-6-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-09-02rust: str: introduce `kstrtobool` functionAndreas Hindborg
Add a Rust wrapper for the kernel's `kstrtobool` function that converts common user inputs into boolean values. Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-5-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-09-02rust: str: introduce `NullTerminatedFormatter`Andreas Hindborg
Add `NullTerminatedFormatter`, a formatter that writes a null terminated string to an array or slice buffer. Because this type needs to manage the trailing null marker, the existing formatters cannot be used to implement this type. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-4-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-09-02rust: str: expose `str::{Formatter, RawFormatter}` publicly.Andreas Hindborg
rnull is going to make use of `str::Formatter` and `str::RawFormatter`, so expose them with public visibility. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-3-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
generated by cgit v1.2.3 (git 2.0.4) at 2025-12-24 16:34:01 +0000