[PATCH v2 2/8] rust: alloc: use `kernel::{fmt,prelude::fmt!}`

From: Tamir Duberstein
Date: Sat Jul 19 2025 - 18:42:55 EST


Reduce coupling to implementation details of the formatting machinery by
avoiding direct use for `core`'s formatting traits and macros.

Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>
Reviewed-by: Benno Lossin <lossin@xxxxxxxxxx>
Acked-by: Danilo Krummrich <dakr@xxxxxxxxxx>
Signed-off-by: Tamir Duberstein <tamird@xxxxxxxxx>
---
rust/kernel/alloc/kbox.rs | 2 +-
rust/kernel/alloc/kvec.rs | 2 +-
rust/kernel/alloc/kvec/errors.rs | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/rust/kernel/alloc/kbox.rs b/rust/kernel/alloc/kbox.rs
index 856d05aa60f1..563187d09a8e 100644
--- a/rust/kernel/alloc/kbox.rs
+++ b/rust/kernel/alloc/kbox.rs
@@ -7,7 +7,6 @@
use super::{AllocError, Allocator, Flags};
use core::alloc::Layout;
use core::borrow::{Borrow, BorrowMut};
-use core::fmt;
use core::marker::PhantomData;
use core::mem::ManuallyDrop;
use core::mem::MaybeUninit;
@@ -17,6 +16,7 @@
use core::result::Result;

use crate::ffi::c_void;
+use crate::fmt;
use crate::init::InPlaceInit;
use crate::types::ForeignOwnable;
use pin_init::{InPlaceWrite, Init, PinInit, ZeroableOption};
diff --git a/rust/kernel/alloc/kvec.rs b/rust/kernel/alloc/kvec.rs
index 3c72e0bdddb8..4a1b2c26209a 100644
--- a/rust/kernel/alloc/kvec.rs
+++ b/rust/kernel/alloc/kvec.rs
@@ -7,9 +7,9 @@
layout::ArrayLayout,
AllocError, Allocator, Box, Flags,
};
+use crate::fmt;
use core::{
borrow::{Borrow, BorrowMut},
- fmt,
marker::PhantomData,
mem::{ManuallyDrop, MaybeUninit},
ops::Deref,
diff --git a/rust/kernel/alloc/kvec/errors.rs b/rust/kernel/alloc/kvec/errors.rs
index 348b8d27e102..21a920a4b09b 100644
--- a/rust/kernel/alloc/kvec/errors.rs
+++ b/rust/kernel/alloc/kvec/errors.rs
@@ -2,7 +2,7 @@

//! Errors for the [`Vec`] type.

-use core::fmt::{self, Debug, Formatter};
+use kernel::fmt::{self, Debug, Formatter};
use kernel::prelude::*;

/// Error type for [`Vec::push_within_capacity`].

--
2.50.1