linux-kernel - [PATCH v3 0/3] rust: time: Introduce typed clock sources and generalize Instant

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Message-ID: <20250609010415.3302835-1-fujita.tomonori@gmail.com>
Date: Mon,  9 Jun 2025 10:04:10 +0900
From: FUJITA Tomonori <fujita.tomonori@...il.com>
To: a.hindborg@...nel.org,
	alex.gaynor@...il.com,
	ojeda@...nel.org
Cc: aliceryhl@...gle.com,
	anna-maria@...utronix.de,
	bjorn3_gh@...tonmail.com,
	boqun.feng@...il.com,
	dakr@...nel.org,
	frederic@...nel.org,
	gary@...yguo.net,
	jstultz@...gle.com,
	linux-kernel@...r.kernel.org,
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	rust-for-linux@...r.kernel.org,
	sboyd@...nel.org,
	tglx@...utronix.de,
	tmgross@...ch.edu
Subject: [PATCH v3 0/3] rust: time: Introduce typed clock sources and generalize Instant

This patch series introduces a type-safe abstraction over clock
sources. The goal is to remove the need for runtime clock selection
(via ClockId) and instead leverage Rust's type system to statically
associate the Instant type with a specific clock.

This approach enables compile-time enforcement of clock correctness
across the APIs of Instant type.

v3:
- rebased on 6.16-rc1
v2: https://lore.kernel.org/rust-for-linux/20250504042436.237756-1-fujita.tomonori@gmail.com/
- removed most of changes to hrtimer code 
v1: https://lore.kernel.org/rust-for-linux/20250413105629.162349-1-fujita.tomonori@gmail.com/

FUJITA Tomonori (3):
  rust: time: Replace ClockId enum with ClockSource trait
  rust: time: Make Instant generic over ClockSource
  rust: time: Add ktime_get() to ClockSource trait

 rust/helpers/helpers.c      |   1 +
 rust/helpers/time.c         |  18 ++++
 rust/kernel/time.rs         | 201 ++++++++++++++++++++++--------------
 rust/kernel/time/hrtimer.rs |   6 +-
 4 files changed, 148 insertions(+), 78 deletions(-)
 create mode 100644 rust/helpers/time.c


base-commit: 19272b37aa4f83ca52bdf9c16d5d81bdd1354494
-- 
2.43.0