linux-kernel - [PATCH v2 0/4] Additional CondVar methods needed by Rust Binder

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Date: Sat, 16 Dec 2023 15:31:38 +0000
From: Alice Ryhl <aliceryhl@...gle.com>
To: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Wedson Almeida Filho <wedsonaf@...il.com>, Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	"Björn Roy Baron" <bjorn3_gh@...tonmail.com>, Benno Lossin <benno.lossin@...ton.me>, 
	Andreas Hindborg <a.hindborg@...sung.com>, Peter Zijlstra <peterz@...radead.org>, 
	Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>, Waiman Long <longman@...hat.com>, 
	Tiago Lam <tiagolam@...il.com>, Thomas Gleixner <tglx@...utronix.de>
Cc: rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Alice Ryhl <aliceryhl@...gle.com>, Martin Rodriguez Reboredo <yakoyoku@...il.com>
Subject: [PATCH v2 0/4] Additional CondVar methods needed by Rust Binder

This patchset contains some CondVar methods that Rust Binder needs.

The CondVar type implements a condition variable, and tries to mirror
the API of the CondVar type provided by the Rust standard library [2].
It is implemented using a `wait_queue_head`.

Please see the Rust Binder RFC for usage examples [1].

Users of rust: sync: add `CondVar::notify_sync`:
	[PATCH RFC 04/20] rust_binder: add work lists
	[PATCH RFC 07/20] rust_binder: add epoll support
	[PATCH RFC 08/20] rust_binder: add non-oneway transactions

Users of rust: time: add msecs to jiffies conversion:
	[PATCH v2 3/3] rust: sync: add `CondVar::wait_timeout`
	[PATCH RFC 15/20] rust_binder: add process freezing

Users of rust: sync: add `CondVar::wait_timeout`:
	[PATCH RFC 15/20] rust_binder: add process freezing

This patchset is based on top of Boqun's patch [3] that renames the
existing wait methods to follow the C convention of using the
_interruptable suffix.

Link: https://lore.kernel.org/rust-for-linux/20231101-rust-binder-v1-0-08ba9197f637@google.com/ [1]
Link: https://doc.rust-lang.org/stable/std/sync/struct.Condvar.html [2]
Link: https://lore.kernel.org/all/20231214200421.690629-1-boqun.feng@gmail.com/ [3]
Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>
---
Changes in v2:
- Introduce "rust: time: add msecs to jiffies conversion" patch.
- Introduce "rust: sync: update integer types in CondVar" patch.
- Merge wait_internal and wait_internal_timeout.
- Use new Jiffies type alias instead of u64.
- Update names to use _interruptable suffix (and base patchset on top of [3]).
- Link to v1: https://lore.kernel.org/r/20231206-rb-new-condvar-methods-v1-0-33a4cab7fdaa@google.com

---
Alice Ryhl (4):
      rust: sync: add `CondVar::notify_sync`
      rust: time: add msecs to jiffies conversion
      rust: sync: add `CondVar::wait_timeout`
      rust: sync: update integer types in CondVar

 rust/bindings/bindings_helper.h |  1 +
 rust/kernel/lib.rs              |  1 +
 rust/kernel/sync/condvar.rs     | 86 ++++++++++++++++++++++++++++++++---------
 rust/kernel/sync/lock.rs        |  4 +-
 rust/kernel/time.rs             | 17 ++++++++
 5 files changed, 89 insertions(+), 20 deletions(-)
---
base-commit: 2a76b6e08193d2997689011321bcf230f0c8d4fe
change-id: 20231205-rb-new-condvar-methods-27ba95df5d41

Best regards,
-- 
Alice Ryhl <aliceryhl@...gle.com>