linux-kernel - [PATCH v6 0/2] rust: alloc: kvec doc example and allocator unit tests

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Message-ID: <cover.1753841900.git.zhuhui@kylinos.cn>
Date: Wed, 30 Jul 2025 11:35:20 +0800
From: Hui Zhu <hui.zhu@...ux.dev>
To: Danilo Krummrich <dakr@...nel.org>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	"Liam R . Howlett" <Liam.Howlett@...cle.com>,
	Uladzislau Rezki <urezki@...il.com>,
	Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	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>,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org,
	vitaly.wool@...sulko.se
Cc: Hui Zhu <zhuhui@...inos.cn>
Subject: [PATCH v6 0/2] rust: alloc: kvec doc example and allocator unit tests

From: Hui Zhu <zhuhui@...inos.cn>

This patchset adds KUnit tests for allocator alignment
guarantees and improves kvec documentation.

Patch 1 adds KUnit tests for verifying alignment guarantees
in Rust kernel allocators. Tests cover Kmalloc, Vmalloc
and KVmalloc with both standard (128B) and large page-aligned
(8192B) allocations.

Patch 2 adds a practical usage example for KVec::as_slice
method, showing how to create KVec, push elements and convert
to a slice.

Both patches are co-developed with Geliang Tang. Based on [1].
Tested on x86_64 using KUnit.

Changelog:
v6:
According to the comments of Danilo, updated test for allocator.rs
and allocator rebase onto [1].
v5:
According to the comments of Danilo, change to use generic struct and
allocator Generics in allocator.rs.
v4:
According to the comments of, add the error check for push.
v3:
According to the comments of Danilo and Boqun, move KVec test to doc
example and move VBox to allocator unit tests.
v2:
According to the comments of Danilo, updated the commit to samples the
usage of VBox and KVec.

[1] https://lore.kernel.org/lkml/20250715135645.2230065-1-vitaly.wool@konsulko.se/

Hui Zhu (2):
  rust: allocator: add KUnit tests for alignment guarantees
  rust: alloc: kvec: add doc example for as_slice method

 rust/kernel/alloc/allocator.rs | 56 ++++++++++++++++++++++++++++++++++
 rust/kernel/alloc/kvec.rs      | 10 ++++++
 2 files changed, 66 insertions(+)

-- 
2.43.0