linux-kernel - [PATCH 3/7] rust: add `kunit

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Message-ID: <20250502215133.1923676-4-ojeda@kernel.org>
Date: Fri,  2 May 2025 23:51:28 +0200
From: Miguel Ojeda <ojeda@...nel.org>
To: Brendan Higgins <brendan.higgins@...ux.dev>,
	David Gow <davidgow@...gle.com>,
	Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>
Cc: Rae Moar <rmoar@...gle.com>,
	linux-kselftest@...r.kernel.org,
	kunit-dev@...glegroups.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@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Trevor Gross <tmgross@...ch.edu>,
	Danilo Krummrich <dakr@...nel.org>,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	patches@...ts.linux.dev
Subject: [PATCH 3/7] rust: add `kunit_tests` to the prelude

It is convenient to have certain things in the `kernel` prelude, and
means kernel developers will find it even easier to start writing tests.

And, anyway, nobody should need to use this identifier for anything else.

Thus add it to the prelude.

Signed-off-by: Miguel Ojeda <ojeda@...nel.org>
---
 rust/kernel/kunit.rs   | 3 +--
 rust/kernel/prelude.rs | 2 +-
 rust/macros/lib.rs     | 2 +-
 3 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/rust/kernel/kunit.rs b/rust/kernel/kunit.rs
index f43e3ed460c2..053a7da147d5 100644
--- a/rust/kernel/kunit.rs
+++ b/rust/kernel/kunit.rs
@@ -6,6 +6,7 @@
 //!
 //! Reference: <https://docs.kernel.org/dev-tools/kunit/index.html>
 
+use crate::prelude::*;
 use core::{ffi::c_void, fmt};
 
 /// Prints a KUnit error-level message.
@@ -40,8 +41,6 @@ pub fn info(args: fmt::Arguments<'_>) {
     }
 }
 
-use macros::kunit_tests;
-
 /// Asserts that a boolean expression is `true` at runtime.
 ///
 /// Public but hidden since it should only be used from generated tests.
diff --git a/rust/kernel/prelude.rs b/rust/kernel/prelude.rs
index baa774a351ce..e5d61a83952f 100644
--- a/rust/kernel/prelude.rs
+++ b/rust/kernel/prelude.rs
@@ -17,7 +17,7 @@
 pub use crate::alloc::{flags::*, Box, KBox, KVBox, KVVec, KVec, VBox, VVec, Vec};
 
 #[doc(no_inline)]
-pub use macros::{export, module, vtable};
+pub use macros::{export, kunit_tests, module, vtable};
 
 pub use pin_init::{init, pin_data, pin_init, pinned_drop, InPlaceWrite, Init, PinInit, Zeroable};
 
diff --git a/rust/macros/lib.rs b/rust/macros/lib.rs
index 8bd7906276be..8b8d46e759d4 100644
--- a/rust/macros/lib.rs
+++ b/rust/macros/lib.rs
@@ -406,7 +406,7 @@ pub fn paste(input: TokenStream) -> TokenStream {
 /// # Examples
 ///
 /// ```ignore
-/// # use macros::kunit_tests;
+/// # use kernel::prelude::*;
 /// #[kunit_tests(kunit_test_suit_name)]
 /// mod tests {
 ///     #[test]
-- 
2.49.0