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* Merge tag 'rust-hrtimer-for-v6.15-v3' of ↵Miguel Ojeda2025-03-251-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://github.com/Rust-for-Linux/linux into rust-next Pull rust-hrtimer updates from Andreas Hindborg: "Introduce Rust support for the 'hrtimer' subsystem: - Add a way to use the 'hrtimer' subsystem from Rust. Rust code can now set up intrusive timers without allocating when starting the timer. - Add support for 'Pin<Box<_>>', 'Arc<_>', 'Pin<&_>' and 'Pin<&mut _>' as pointer types for use with timer callbacks. - Add support for setting clock source and timer mode. 'kernel' crate: - Add 'Arc::as_ptr' for converting an 'Arc' to a raw pointer. This is a dependency for the 'hrtimer' API. - Add 'Box::into_pin' for converting a 'Box<_>' into a 'Pin<Box<_>>' to align with Rust 'alloc'. This is a dependency for the 'hrtimer' API." * tag 'rust-hrtimer-for-v6.15-v3' of https://github.com/Rust-for-Linux/linux: rust: hrtimer: add maintainer entry rust: hrtimer: add clocksource selection through `ClockId` rust: hrtimer: add `HrTimerMode` rust: hrtimer: implement `HrTimerPointer` for `Pin<Box<T>>` rust: alloc: add `Box::into_pin` rust: hrtimer: implement `UnsafeHrTimerPointer` for `Pin<&mut T>` rust: hrtimer: implement `UnsafeHrTimerPointer` for `Pin<&T>` rust: hrtimer: add `hrtimer::ScopedHrTimerPointer` rust: hrtimer: add `UnsafeHrTimerPointer` rust: hrtimer: allow timer restart from timer handler rust: hrtimer: implement `HrTimerPointer` for `Arc` rust: sync: add `Arc::as_ptr` rust: hrtimer: introduce hrtimer support
* rust: hrtimer: add clocksource selection through `ClockId`Andreas Hindborg2025-03-221-2/+3
| | | | | | | | | | | | Allow selecting a clock source for timers by passing a `ClockId` variant to `HrTimer::new`. Acked-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Benno Lossin <benno.lossin@proton.me> Link: https://lore.kernel.org/r/20250309-hrtimer-v3-v6-12-rc2-v12-12-73586e2bd5f1@kernel.org Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
* rust: hrtimer: add `HrTimerMode`Andreas Hindborg2025-03-221-3/+79
| | | | | | | | | | | | Allow selection of timer mode by passing a `HrTimerMode` variant to `HrTimer::new`. Acked-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Benno Lossin <benno.lossin@proton.me> Link: https://lore.kernel.org/r/20250309-hrtimer-v3-v6-12-rc2-v12-11-73586e2bd5f1@kernel.org Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
* rust: hrtimer: implement `HrTimerPointer` for `Pin<Box<T>>`Andreas Hindborg2025-03-222-0/+123
| | | | | | | | | | | Allow `Pin<Box<T>>` to be the target of a timer callback. Acked-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Benno Lossin <benno.lossin@proton.me> Link: https://lore.kernel.org/r/20250309-hrtimer-v3-v6-12-rc2-v12-10-73586e2bd5f1@kernel.org Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
* rust: hrtimer: implement `UnsafeHrTimerPointer` for `Pin<&mut T>`Andreas Hindborg2025-03-222-0/+110
| | | | | | | | | | | | Allow pinned mutable references to structs that contain a `HrTimer` node to be scheduled with the `hrtimer` subsystem. Acked-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Benno Lossin <benno.lossin@proton.me> Link: https://lore.kernel.org/r/20250309-hrtimer-v3-v6-12-rc2-v12-8-73586e2bd5f1@kernel.org Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
* rust: hrtimer: implement `UnsafeHrTimerPointer` for `Pin<&T>`Andreas Hindborg2025-03-222-0/+106
| | | | | | | | | | | | Allow pinned references to structs that contain a `HrTimer` node to be scheduled with the `hrtimer` subsystem. Acked-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Benno Lossin <benno.lossin@proton.me> Link: https://lore.kernel.org/r/20250309-hrtimer-v3-v6-12-rc2-v12-7-73586e2bd5f1@kernel.org Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
* rust: hrtimer: add `hrtimer::ScopedHrTimerPointer`Andreas Hindborg2025-03-221-0/+33
| | | | | | | | | | | | | | | Add the trait `ScopedHrTimerPointer` to allow safe use of stack allocated timers. Safety is achieved by pinning the stack in place while timers are running. Implement the trait for all types that implement `UnsafeHrTimerPointer`. Acked-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Benno Lossin <benno.lossin@proton.me> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://lore.kernel.org/r/20250309-hrtimer-v3-v6-12-rc2-v12-6-73586e2bd5f1@kernel.org Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
* rust: hrtimer: add `UnsafeHrTimerPointer`Andreas Hindborg2025-03-221-0/+31
| | | | | | | | | | | Add a trait to allow unsafely queuing stack allocated timers. Acked-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Benno Lossin <benno.lossin@proton.me> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://lore.kernel.org/r/20250309-hrtimer-v3-v6-12-rc2-v12-5-73586e2bd5f1@kernel.org Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
* rust: hrtimer: allow timer restart from timer handlerAndreas Hindborg2025-03-222-4/+20
| | | | | | | | | | | | | Allow timer handlers to report that they want a timer to be restarted after the timer handler has finished executing. Acked-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Benno Lossin <benno.lossin@proton.me> Reviewed-by: Tamir Duberstein <tamird@gmail.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://lore.kernel.org/r/20250309-hrtimer-v3-v6-12-rc2-v12-4-73586e2bd5f1@kernel.org Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
* rust: hrtimer: implement `HrTimerPointer` for `Arc`Andreas Hindborg2025-03-112-1/+105
| | | | | | | | | | | | Allow the use of intrusive `hrtimer` fields in structs that are managed by an `Arc` by implementing `HrTimerPointer` and `RawTimerCallbck` for `Arc`. Acked-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Benno Lossin <benno.lossin@proton.me> Link: https://lore.kernel.org/r/20250309-hrtimer-v3-v6-12-rc2-v12-3-73586e2bd5f1@kernel.org Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
* rust: hrtimer: introduce hrtimer supportAndreas Hindborg2025-03-111-0/+351
Add support for intrusive use of the hrtimer system. For now, only add support for embedding one timer per Rust struct. The hrtimer Rust API is based on the intrusive style pattern introduced by the Rust workqueue API. Acked-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Benno Lossin <benno.lossin@proton.me> Reviewed-by: Tamir Duberstein <tamird@gmail.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://lore.kernel.org/r/20250309-hrtimer-v3-v6-12-rc2-v12-1-73586e2bd5f1@kernel.org Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
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