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[v3] rust: kunit: use crate-level mapping for `c_void`

Message ID 20250528174953.2948570-1-y.j3ms.n@gmail.com
State New
Headers show
Series [v3] rust: kunit: use crate-level mapping for `c_void` | expand

Commit Message

Jesung Yang May 28, 2025, 5:49 p.m. UTC 
Remove `use core::ffi::c_void`, which shadows `kernel::ffi::c_void`
brought in via `use crate::prelude::*`, to maintain consistency and
centralize the abstraction.

Since `kernel::ffi::c_void` is a straightforward re-export of
`core::ffi::c_void`, both are functionally equivalent. However, using
`kernel::ffi::c_void` improves consistency across the kernel's Rust code
and provides a unified reference point in case the definition ever needs
to change, even if such a change is unlikely.

Reviewed-by: Benno Lossin <lossin@kernel.org>
Signed-off-by: Jesung Yang <y.j3ms.n@gmail.com>
Link: https://rust-for-linux.zulipchat.com/#narrow/channel/288089/topic/x/near/520452733
---
Changes in v3:
- Rebase on a3b2347343e0
- Remove the explicit import of `kernel::ffi::c_void`
- Reword the commit message accordingly
- Link to v2: https://lore.kernel.org/rust-for-linux/20250528155147.2793921-1-y.j3ms.n@gmail.com/

Changes in v2:
- Add "Link" tag to the related discussion on Zulip
- Reword the commit message to clarify `kernel::ffi::c_void` is a re-export
- Link to v1: https://lore.kernel.org/rust-for-linux/20250526162429.1114862-1-y.j3ms.n@gmail.com/
---
 rust/kernel/kunit.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


base-commit: a3b2347343e077e81d3c169f32c9b2cb1364f4cc

Comments

Miguel Ojeda May 29, 2025, 12:53 p.m. UTC | #1 
On Wed, May 28, 2025 at 7:51 PM Jesung Yang <y.j3ms.n@gmail.com> wrote:
>
> Remove `use core::ffi::c_void`, which shadows `kernel::ffi::c_void`
> brought in via `use crate::prelude::*`, to maintain consistency and
> centralize the abstraction.
>
> Since `kernel::ffi::c_void` is a straightforward re-export of
> `core::ffi::c_void`, both are functionally equivalent. However, using
> `kernel::ffi::c_void` improves consistency across the kernel's Rust code
> and provides a unified reference point in case the definition ever needs
> to change, even if such a change is unlikely.
>
> Reviewed-by: Benno Lossin <lossin@kernel.org>
> Signed-off-by: Jesung Yang <y.j3ms.n@gmail.com>
> Link: https://rust-for-linux.zulipchat.com/#narrow/channel/288089/topic/x/near/520452733

Looks good to me, thanks! If KUnit picks this next cycle:

Acked-by: Miguel Ojeda <ojeda@kernel.org>

Otherwise, I am happy to take it too.

Cheers,
Miguel
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Patch

diff --git a/rust/kernel/kunit.rs b/rust/kernel/kunit.rs
index 4b8cdcb21e77..603330f247c7 100644
--- a/rust/kernel/kunit.rs
+++ b/rust/kernel/kunit.rs
@@ -7,7 +7,7 @@ 
 //! Reference: <https://docs.kernel.org/dev-tools/kunit/index.html>
 
 use crate::prelude::*;
-use core::{ffi::c_void, fmt};
+use core::fmt;
 
 /// Prints a KUnit error-level message.
 ///