linux-kernel - [PATCH V3 0/3] rust: Introduce CpuId and fix cpumask doctest

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Message-Id: <cover.1749554685.git.viresh.kumar@linaro.org>
Date: Tue, 10 Jun 2025 18:51:55 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Boqun Feng <boqun.feng@...il.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Benno Lossin <lossin@...nel.org>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Danilo Krummrich <dakr@...nel.org>,
	Gary Guo <gary@...yguo.net>,
	Miguel Ojeda <ojeda@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Trevor Gross <tmgross@...ch.edu>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Yury Norov <yury.norov@...il.com>
Cc: Vincent Guittot <vincent.guittot@...aro.org>,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org
Subject: [PATCH V3 0/3] rust: Introduce CpuId and fix cpumask doctest

Hello,

Here is another attempt at fixing the cpumask doctest. This series creates a new
abstraction `CpuId`, which is used to write a cleaner cpumask example which
doesn't fail in those corner cases.

Rebased over v6.16-rc1 + [1].

V2->V3:
- Include the separately sent patch as 3/3 and clarify about `unstable` CpuId.
- Add few debug_assert!().
- Improved comments, commit log.

V1->V2:
- Introduce CpuId.
- Use CpuId in cpufreq, opp, cpumask abstractions.
- Fix cpumask example.

--
Viresh

[1] https://lore.kernel.org/all/4823a58093c6dfa20df62b5c18da613621b9716e.1749554599.git.viresh.kumar@linaro.org/

Viresh Kumar (3):
  rust: cpu: Introduce CpuId abstraction
  rust: Use CpuId in place of raw CPU numbers
  rust: cpu: Add CpuId::current() to retrieve current CPU ID

 MAINTAINERS                    |   1 +
 drivers/cpufreq/rcpufreq_dt.rs |   4 +-
 rust/helpers/cpu.c             |   8 +++
 rust/helpers/helpers.c         |   1 +
 rust/kernel/cpu.rs             | 124 ++++++++++++++++++++++++++++++++-
 rust/kernel/cpufreq.rs         |  27 ++++---
 rust/kernel/cpumask.rs         |  51 ++++++++++----
 7 files changed, 189 insertions(+), 27 deletions(-)
 create mode 100644 rust/helpers/cpu.c


base-commit: 19272b37aa4f83ca52bdf9c16d5d81bdd1354494
prerequisite-patch-id: 1917103231ee798c4217f6da8bafa603b00e554c
-- 
2.31.1.272.g89b43f80a514