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rust: list: simplify macro capture

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Avoid manually capturing generics; use `ty` to capture the whole type
instead.

Reviewed-by: Christian Schrefl <chrisi.schrefl@gmail.com>
Tested-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Link: https://lore.kernel.org/r/20250709-list-no-offset-v4-1-a429e75840a9@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
This commit is contained in:
Tamir Duberstein 2025-07-09 15:31:11 -04:00 • committed by Miguel Ojeda
parent b0c7d8c9e8
commit e71d7e39be
1 changed files with 5 additions and 11 deletions
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16
rust/kernel/list/impl_list_item_mod.rs
View file

@ -43,7 +43,7 @@ pub unsafe trait HasListLinks<const ID: u64 = 0> {
macro_rules! impl_has_list_links {
($(impl$(<$($implarg:ident),*>)?
HasListLinks$(<$id:tt>)?
for $self:ident $(<$($selfarg:ty),*>)?
for $self:ty
{ self$(.$field:ident)* }
)*) => {$(
// SAFETY: The implementation of `raw_get_list_links` only compiles if the field has the
@ -51,9 +51,7 @@ macro_rules! impl_has_list_links {
//
// The behavior of `raw_get_list_links` is not changed since the `addr_of_mut!` macro is
// equivalent to the pointer offset operation in the trait definition.
unsafe impl$(<$($implarg),*>)? $crate::list::HasListLinks$(<$id>)? for
$self $(<$($selfarg),*>)?
{
unsafe impl$(<$($implarg),*>)? $crate::list::HasListLinks$(<$id>)? for $self {
const OFFSET: usize = ::core::mem::offset_of!(Self, $($field).*) as usize;
#[inline]
@ -85,18 +83,14 @@ where
macro_rules! impl_has_list_links_self_ptr {
($(impl$({$($implarg:tt)*})?
HasSelfPtr<$item_type:ty $(, $id:tt)?>
for $self:ident $(<$($selfarg:ty),*>)?
for $self:ty
{ self.$field:ident }
)*) => {$(
// SAFETY: The implementation of `raw_get_list_links` only compiles if the field has the
// right type.
unsafe impl$(<$($implarg)*>)? $crate::list::HasSelfPtr<$item_type $(, $id)?> for
$self $(<$($selfarg),*>)?
{}
unsafe impl$(<$($implarg)*>)? $crate::list::HasSelfPtr<$item_type $(, $id)?> for $self {}
unsafe impl$(<$($implarg)*>)? $crate::list::HasListLinks$(<$id>)? for
$self $(<$($selfarg),*>)?
{
unsafe impl$(<$($implarg)*>)? $crate::list::HasListLinks$(<$id>)? for $self {
const OFFSET: usize = ::core::mem::offset_of!(Self, $field) as usize;
#[inline]