Commit 00280272 authored Apr 01, 2024 by Miguel Ojeda

rust: kernel: remove redundant imports

Rust's `unused_imports` lint covers both unused and redundant imports.
In the upcoming 1.78.0, the lint detects more cases of redundant imports
[1], e.g.:

    error: the item `bindings` is imported redundantly
      --> rust/kernel/print.rs:38:9
       |
    38 |     use crate::bindings;
       |         ^^^^^^^^^^^^^^^ the item `bindings` is already defined by prelude

Most cases are `use crate::bindings`, plus a few other items like `Box`.
Thus clean them up.

Note that, in the `bindings` case, the message "defined by prelude"
above means the extern prelude, i.e. the `--extern` flags we pass.

Link: https://github.com/rust-lang/rust/pull/117772

 [1]
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20240401212303.537355-3-ojeda@kernel.org


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

parent 7c81aa85

rust/kernel/alloc.rs

+0 −1

Original line number	Diff line number	Diff line
		@@ -46,7 +46,6 @@ fn not(self) -> Self::Output {
		/// These are meant to be used in functions that can allocate memory.
		pub mod flags {
		use super::Flags;
		use crate::bindings;

		/// Zeroes out the allocated memory.
		///

rust/kernel/alloc/allocator.rs

+0 −2

Original line number	Diff line number	Diff line
		@@ -6,8 +6,6 @@
		use core::alloc::{GlobalAlloc, Layout};
		use core::ptr;

		use crate::bindings;

		struct KernelAllocator;

		/// Calls `krealloc` with a proper size to alloc a new object aligned to `new_layout`'s alignment.

rust/kernel/alloc/box_ext.rs

+0 −1

Original line number	Diff line number	Diff line
		@@ -5,7 +5,6 @@
		use super::{AllocError, Flags};
		use alloc::boxed::Box;
		use core::mem::MaybeUninit;
		use core::result::Result;

		/// Extensions to [`Box`].
		pub trait BoxExt<T>: Sized {

rust/kernel/alloc/vec_ext.rs

+0 −1

Original line number	Diff line number	Diff line
		@@ -4,7 +4,6 @@

		use super::{AllocError, Flags};
		use alloc::vec::Vec;
		use core::result::Result;

		/// Extensions to [`Vec`].
		pub trait VecExt<T>: Sized {

rust/kernel/error.rs

+0 −1

Original line number	Diff line number	Diff line
		@@ -8,7 +8,6 @@

		use alloc::alloc::LayoutError;

		use core::convert::From;
		use core::fmt;
		use core::num::TryFromIntError;
		use core::str::Utf8Error;