linux-kernel - [PATCH 0/2] rust: cpumask: Bindings for core cpumasks and cpumask iterators

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20251105-cpumask-iter-v1-0-7536f906d7ed@gmail.com>
Date: Wed, 05 Nov 2025 15:16:13 -0800
From: Mitchell Levy <levymitchell0@...il.com>
To: Yury Norov <yury.norov@...il.com>, Miguel Ojeda <ojeda@...nel.org>, 
 Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng <boqun.feng@...il.com>, 
 Gary Guo <gary@...yguo.net>, 
 Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
 Benno Lossin <lossin@...nel.org>, Andreas Hindborg <a.hindborg@...nel.org>, 
 Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, 
 Danilo Krummrich <dakr@...nel.org>, Viresh Kumar <viresh.kumar@...aro.org>
Cc: rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Mitchell Levy <levymitchell0@...il.com>
Subject: [PATCH 0/2] rust: cpumask: Bindings for core cpumasks and cpumask
 iterators

The kernel provides a number of very useful CPU masks from the C side,
including CPU masks for possible and online CPUs. In particular, these
are very useful when some operation must be done on each CPU (either
each possible CPU or each online CPU, etc). Therefore, it seems to make
sense to add both of these functionalities at once.

Signed-off-by: Mitchell Levy <levymitchell0@...il.com>
---
These patches originated as part of my work on a Rust per-CPU API [1].
Boqun suggested to me that these may make sense to merge separately, and
it does seem like these might be useful beyond the per-CPU work.

[1]: https://lore.kernel.org/rust-for-linux/20251105-rust-percpu-v4-0-984b1470adcb@gmail.com/

---
Mitchell Levy (2):
      rust: cpumask: Add a `Cpumask` iterator
      rust: cpumask: Add getters for globally defined cpumasks

 rust/helpers/cpumask.c |  5 +++
 rust/kernel/cpumask.rs | 94 +++++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 98 insertions(+), 1 deletion(-)
---
base-commit: f3f6b3664302e16ef1c6b91034a72df5564d6b8a
change-id: 20251105-cpumask-iter-ff0f1a5899b3

Best regards,
-- 
Mitchell Levy <levymitchell0@...il.com>