rust: list: hide macros from top-level kernel doc

Due to Rust macro scoping rules, all macros defined in a crate using
`#[macro_export]` end up in the top-level. For the list macros, we
re-export them inside the list module, and expect users to use
`kernel::list::macro_name!()`.

Use `#[doc(hidden)]` on the macro definition, and use `#[doc(inline)]` on
the re-export to make the macro appear to be defined at module-level inside
documentation.

The other exported types are already automatically `#[doc(inline)]` because
they are defined in a non-public module, so there is no need to split the
macro re-exports out.

Signed-off-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260312174700.4016015-1-gary@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

rust/kernel/list.rs

@@ -12,15 +12,31 @@ use core::ptr;
 use pin_init::PinInit;
 
 mod impl_list_item_mod;
+#[doc(inline)]
 pub use self::impl_list_item_mod::{
-    impl_has_list_links, impl_has_list_links_self_ptr, impl_list_item, HasListLinks, HasSelfPtr,
+    impl_has_list_links,
+    impl_has_list_links_self_ptr,
+    impl_list_item,
+    HasListLinks,
+    HasSelfPtr, //
 };
 
 mod arc;
-pub use self::arc::{impl_list_arc_safe, AtomicTracker, ListArc, ListArcSafe, TryNewListArc};
+#[doc(inline)]
+pub use self::arc::{
+    impl_list_arc_safe,
+    AtomicTracker,
+    ListArc,
+    ListArcSafe,
+    TryNewListArc, //
+};
 
 mod arc_field;
-pub use self::arc_field::{define_list_arc_field_getter, ListArcField};
+#[doc(inline)]
+pub use self::arc_field::{
+    define_list_arc_field_getter,
+    ListArcField, //
+};
 
 /// A linked list.
 ///

rust/kernel/list/arc.rs

@@ -82,6 +82,7 @@ pub unsafe trait TryNewListArc<const ID: u64 = 0>: ListArcSafe<ID> {
 /// [`AtomicTracker`]. However, it is also possible to defer the tracking to another struct
 /// using also using this macro.
 #[macro_export]
+#[doc(hidden)]
 macro_rules! impl_list_arc_safe {
     (impl$({$($generics:tt)*})? ListArcSafe<$num:tt> for $t:ty { untracked; } $($rest:tt)*) => {
         impl$(<$($generics)*>)? $crate::list::ListArcSafe<$num> for $t {

rust/kernel/list/arc_field.rs

@@ -66,6 +66,7 @@ impl<T, const ID: u64> ListArcField<T, ID> {
 
 /// Defines getters for a [`ListArcField`].
 #[macro_export]
+#[doc(hidden)]
 macro_rules! define_list_arc_field_getter {
     ($pub:vis fn $name:ident(&self $(<$id:tt>)?) -> &$typ:ty { $field:ident }
      $($rest:tt)*

rust/kernel/list/impl_list_item_mod.rs

@@ -29,6 +29,7 @@ pub unsafe trait HasListLinks<const ID: u64 = 0> {
 
 /// Implements the [`HasListLinks`] trait for the given type.
 #[macro_export]
+#[doc(hidden)]
 macro_rules! impl_has_list_links {
     ($(impl$({$($generics:tt)*})?
        HasListLinks$(<$id:tt>)?
@@ -74,6 +75,7 @@ where
 
 /// Implements the [`HasListLinks`] and [`HasSelfPtr`] traits for the given type.
 #[macro_export]
+#[doc(hidden)]
 macro_rules! impl_has_list_links_self_ptr {
     ($(impl$({$($generics:tt)*})?
        HasSelfPtr<$item_type:ty $(, $id:tt)?>
@@ -181,6 +183,7 @@ pub use impl_has_list_links_self_ptr;
 /// }
 /// ```
 #[macro_export]
+#[doc(hidden)]
 macro_rules! impl_list_item {
     (
         $(impl$({$($generics:tt)*})? ListItem<$num:tt> for $self:ty {