Merge tag 'rust-6.10' of https://github.com/Rust-for-Linux/linux

Pull Rust updates from Miguel Ojeda:
 "The most notable change is the drop of the 'alloc' in-tree fork. This
  is nicely reflected in the diffstat as a ~10k lines drop. In turn,
  this makes the version upgrades way simpler and smaller in the future,
  e.g. the latest one in commit 56f64b370612 ("rust: upgrade to Rust
  1.78.0").

  More importantly, this increases the chances that a newer compiler
  version just works, which in turn means supporting several compiler
  versions is easier now. Thus we will look into finally setting a
  minimum version in the near future.

  Toolchain and infrastructure:

   - Upgrade to Rust 1.78.0

     This time around, due to how the kernel and Rust schedules have
     aligned, there are two upgrades in fact. These allow us to remove
     one more unstable feature ('offset_of') from the list, among other
     improvements

   - Drop 'alloc' in-tree fork of the standard library crate, which
     means all the unstable features used by 'alloc' (~30 language ones,
     ~60 library ones) are not a concern anymore

   - Support DWARFv5 via the '-Zdwarf-version' flag

   - Support zlib and zstd debuginfo compression via the
     '-Zdebuginfo-compression' flag

  'kernel' crate:

   - Support allocation flags ('GFP_*'), particularly in 'Box' (via
     'BoxExt'), 'Vec' (via 'VecExt'), 'Arc' and 'UniqueArc', as well as
     in the 'init' module APIs

   - Remove usage of the 'allocator_api' unstable feature

   - Remove 'try_' prefix in allocation APIs' names

   - Add 'VecExt' (an extension trait) to be able to drop the 'alloc'
     fork

   - Add the '{make,to}_{upper,lower}case()' methods to 'CStr'/'CString'

   - Add the 'as_ptr' method to 'ThisModule'

   - Add the 'from_raw' method to 'ArcBorrow'

   - Add the 'into_unique_or_drop' method to 'Arc'

   - Display column number in the 'dbg!' macro output by applying the
     equivalent change done to the standard library one

   - Migrate 'Work' to '#[pin_data]' thanks to the changes in the
     'macros' crate, which allows to remove an unsafe call in its 'new'
     associated function

   - Prevent namespacing issues when using the '[try_][pin_]init!'
     macros by changing the generated name of guard variables

   - Make the 'get' method in 'Opaque' const

   - Implement the 'Default' trait for 'LockClassKey'

   - Remove unneeded 'kernel::prelude' imports from doctests

   - Remove redundant imports

  'macros' crate:

   - Add 'decl_generics' to 'parse_generics()' to support default
     values, and use that to allow them in '#[pin_data]'

  Helpers:

   - Trivial English grammar fix

  Documentation:

   - Add section on Rust Kselftests to the 'Testing' document

   - Expand the 'Abstractions vs. bindings' section of the 'General
     Information' document"

* tag 'rust-6.10' of https://github.com/Rust-for-Linux/linux: (31 commits)
  rust: alloc: fix dangling pointer in VecExt<T>::reserve()
  rust: upgrade to Rust 1.78.0
  rust: kernel: remove redundant imports
  rust: sync: implement `Default` for `LockClassKey`
  docs: rust: extend abstraction and binding documentation
  docs: rust: Add instructions for the Rust kselftest
  rust: remove unneeded `kernel::prelude` imports from doctests
  rust: update `dbg!()` to format column number
  rust: helpers: Fix grammar in comment
  rust: init: change the generated name of guard variables
  rust: sync: add `Arc::into_unique_or_drop`
  rust: sync: add `ArcBorrow::from_raw`
  rust: types: Make Opaque::get const
  rust: kernel: remove usage of `allocator_api` unstable feature
  rust: init: update `init` module to take allocation flags
  rust: sync: update `Arc` and `UniqueArc` to take allocation flags
  rust: alloc: update `VecExt` to take allocation flags
  rust: alloc: introduce the `BoxExt` trait
  rust: alloc: introduce allocation flags
  rust: alloc: remove our fork of the `alloc` crate
  ...

1 files changed, 0 insertions, 288 deletions

diff --git a/rust/alloc/lib.rs b/rust/alloc/lib.rs
deleted file mode 100644
index 36f79c075593..000000000000
--- a/rust/alloc/lib.rs
+++ /dev/null
@@ -1,288 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0 OR MIT
-
-//! # The Rust core allocation and collections library
-//!
-//! This library provides smart pointers and collections for managing
-//! heap-allocated values.
-//!
-//! This library, like core, normally doesn’t need to be used directly
-//! since its contents are re-exported in the [`std` crate](../std/index.html).
-//! Crates that use the `#![no_std]` attribute however will typically
-//! not depend on `std`, so they’d use this crate instead.
-//!
-//! ## Boxed values
-//!
-//! The [`Box`] type is a smart pointer type. There can only be one owner of a
-//! [`Box`], and the owner can decide to mutate the contents, which live on the
-//! heap.
-//!
-//! This type can be sent among threads efficiently as the size of a `Box` value
-//! is the same as that of a pointer. Tree-like data structures are often built
-//! with boxes because each node often has only one owner, the parent.
-//!
-//! ## Reference counted pointers
-//!
-//! The [`Rc`] type is a non-threadsafe reference-counted pointer type intended
-//! for sharing memory within a thread. An [`Rc`] pointer wraps a type, `T`, and
-//! only allows access to `&T`, a shared reference.
-//!
-//! This type is useful when inherited mutability (such as using [`Box`]) is too
-//! constraining for an application, and is often paired with the [`Cell`] or
-//! [`RefCell`] types in order to allow mutation.
-//!
-//! ## Atomically reference counted pointers
-//!
-//! The [`Arc`] type is the threadsafe equivalent of the [`Rc`] type. It
-//! provides all the same functionality of [`Rc`], except it requires that the
-//! contained type `T` is shareable. Additionally, [`Arc<T>`][`Arc`] is itself
-//! sendable while [`Rc<T>`][`Rc`] is not.
-//!
-//! This type allows for shared access to the contained data, and is often
-//! paired with synchronization primitives such as mutexes to allow mutation of
-//! shared resources.
-//!
-//! ## Collections
-//!
-//! Implementations of the most common general purpose data structures are
-//! defined in this library. They are re-exported through the
-//! [standard collections library](../std/collections/index.html).
-//!
-//! ## Heap interfaces
-//!
-//! The [`alloc`](alloc/index.html) module defines the low-level interface to the
-//! default global allocator. It is not compatible with the libc allocator API.
-//!
-//! [`Arc`]: sync
-//! [`Box`]: boxed
-//! [`Cell`]: core::cell
-//! [`Rc`]: rc
-//! [`RefCell`]: core::cell
-
-// To run alloc tests without x.py without ending up with two copies of alloc, Miri needs to be
-// able to "empty" this crate. See <https://github.com/rust-lang/miri-test-libstd/issues/4>.
-// rustc itself never sets the feature, so this line has no effect there.
-#![cfg(any(not(feature = "miri-test-libstd"), test, doctest))]
-//
-#![allow(unused_attributes)]
-#![stable(feature = "alloc", since = "1.36.0")]
-#![doc(
-    html_playground_url = "https://play.rust-lang.org/",
-    issue_tracker_base_url = "https://github.com/rust-lang/rust/issues/",
-    test(no_crate_inject, attr(allow(unused_variables), deny(warnings)))
-)]
-#![doc(cfg_hide(
-    not(test),
-    not(any(test, bootstrap)),
-    any(not(feature = "miri-test-libstd"), test, doctest),
-    no_global_oom_handling,
-    not(no_global_oom_handling),
-    not(no_rc),
-    not(no_sync),
-    target_has_atomic = "ptr"
-))]
-#![doc(rust_logo)]
-#![feature(rustdoc_internals)]
-#![no_std]
-#![needs_allocator]
-// Lints:
-#![deny(unsafe_op_in_unsafe_fn)]
-#![deny(fuzzy_provenance_casts)]
-#![warn(deprecated_in_future)]
-#![warn(missing_debug_implementations)]
-#![warn(missing_docs)]
-#![allow(explicit_outlives_requirements)]
-#![warn(multiple_supertrait_upcastable)]
-#![allow(internal_features)]
-#![allow(rustdoc::redundant_explicit_links)]
-//
-// Library features:
-// tidy-alphabetical-start
-#![cfg_attr(not(no_global_oom_handling), feature(const_alloc_error))]
-#![cfg_attr(not(no_global_oom_handling), feature(const_btree_len))]
-#![cfg_attr(test, feature(is_sorted))]
-#![cfg_attr(test, feature(new_uninit))]
-#![feature(alloc_layout_extra)]
-#![feature(allocator_api)]
-#![feature(array_chunks)]
-#![feature(array_into_iter_constructors)]
-#![feature(array_methods)]
-#![feature(array_windows)]
-#![feature(ascii_char)]
-#![feature(assert_matches)]
-#![feature(async_iterator)]
-#![feature(coerce_unsized)]
-#![feature(const_align_of_val)]
-#![feature(const_box)]
-#![cfg_attr(not(no_borrow), feature(const_cow_is_borrowed))]
-#![feature(const_eval_select)]
-#![feature(const_maybe_uninit_as_mut_ptr)]
-#![feature(const_maybe_uninit_write)]
-#![feature(const_pin)]
-#![feature(const_refs_to_cell)]
-#![feature(const_size_of_val)]
-#![feature(const_waker)]
-#![feature(core_intrinsics)]
-#![feature(core_panic)]
-#![feature(deprecated_suggestion)]
-#![feature(dispatch_from_dyn)]
-#![feature(error_generic_member_access)]
-#![feature(error_in_core)]
-#![feature(exact_size_is_empty)]
-#![feature(extend_one)]
-#![feature(fmt_internals)]
-#![feature(fn_traits)]
-#![feature(hasher_prefixfree_extras)]
-#![feature(inline_const)]
-#![feature(inplace_iteration)]
-#![feature(iter_advance_by)]
-#![feature(iter_next_chunk)]
-#![feature(iter_repeat_n)]
-#![feature(layout_for_ptr)]
-#![feature(maybe_uninit_slice)]
-#![feature(maybe_uninit_uninit_array)]
-#![feature(maybe_uninit_uninit_array_transpose)]
-#![feature(pattern)]
-#![feature(ptr_internals)]
-#![feature(ptr_metadata)]
-#![feature(ptr_sub_ptr)]
-#![feature(receiver_trait)]
-#![feature(set_ptr_value)]
-#![feature(sized_type_properties)]
-#![feature(slice_from_ptr_range)]
-#![feature(slice_group_by)]
-#![feature(slice_ptr_get)]
-#![feature(slice_ptr_len)]
-#![feature(slice_range)]
-#![feature(std_internals)]
-#![feature(str_internals)]
-#![feature(strict_provenance)]
-#![feature(trusted_fused)]
-#![feature(trusted_len)]
-#![feature(trusted_random_access)]
-#![feature(try_trait_v2)]
-#![feature(tuple_trait)]
-#![feature(unchecked_math)]
-#![feature(unicode_internals)]
-#![feature(unsize)]
-#![feature(utf8_chunks)]
-// tidy-alphabetical-end
-//
-// Language features:
-// tidy-alphabetical-start
-#![cfg_attr(not(test), feature(coroutine_trait))]
-#![cfg_attr(test, feature(panic_update_hook))]
-#![cfg_attr(test, feature(test))]
-#![feature(allocator_internals)]
-#![feature(allow_internal_unstable)]
-#![feature(associated_type_bounds)]
-#![feature(c_unwind)]
-#![feature(cfg_sanitize)]
-#![feature(const_mut_refs)]
-#![feature(const_precise_live_drops)]
-#![feature(const_ptr_write)]
-#![feature(const_trait_impl)]
-#![feature(const_try)]
-#![feature(dropck_eyepatch)]
-#![feature(exclusive_range_pattern)]
-#![feature(fundamental)]
-#![feature(hashmap_internals)]
-#![feature(lang_items)]
-#![feature(min_specialization)]
-#![feature(multiple_supertrait_upcastable)]
-#![feature(negative_impls)]
-#![feature(never_type)]
-#![feature(pointer_is_aligned)]
-#![feature(rustc_allow_const_fn_unstable)]
-#![feature(rustc_attrs)]
-#![feature(slice_internals)]
-#![feature(staged_api)]
-#![feature(stmt_expr_attributes)]
-#![feature(unboxed_closures)]
-#![feature(unsized_fn_params)]
-#![feature(with_negative_coherence)]
-// tidy-alphabetical-end
-//
-// Rustdoc features:
-#![feature(doc_cfg)]
-#![feature(doc_cfg_hide)]
-// Technically, this is a bug in rustdoc: rustdoc sees the documentation on `#[lang = slice_alloc]`
-// blocks is for `&[T]`, which also has documentation using this feature in `core`, and gets mad
-// that the feature-gate isn't enabled. Ideally, it wouldn't check for the feature gate for docs
-// from other crates, but since this can only appear for lang items, it doesn't seem worth fixing.
-#![feature(intra_doc_pointers)]
-
-// Allow testing this library
-#[cfg(test)]
-#[macro_use]
-extern crate std;
-#[cfg(test)]
-extern crate test;
-#[cfg(test)]
-mod testing;
-
-// Module with internal macros used by other modules (needs to be included before other modules).
-#[cfg(not(no_macros))]
-#[macro_use]
-mod macros;
-
-mod raw_vec;
-
-// Heaps provided for low-level allocation strategies
-
-pub mod alloc;
-
-// Primitive types using the heaps above
-
-// Need to conditionally define the mod from `boxed.rs` to avoid
-// duplicating the lang-items when building in test cfg; but also need
-// to allow code to have `use boxed::Box;` declarations.
-#[cfg(not(test))]
-pub mod boxed;
-#[cfg(test)]
-mod boxed {
-    pub use std::boxed::Box;
-}
-#[cfg(not(no_borrow))]
-pub mod borrow;
-pub mod collections;
-#[cfg(all(not(no_rc), not(no_sync), not(no_global_oom_handling)))]
-pub mod ffi;
-#[cfg(not(no_fmt))]
-pub mod fmt;
-#[cfg(not(no_rc))]
-pub mod rc;
-pub mod slice;
-#[cfg(not(no_str))]
-pub mod str;
-#[cfg(not(no_string))]
-pub mod string;
-#[cfg(all(not(no_rc), not(no_sync), target_has_atomic = "ptr"))]
-pub mod sync;
-#[cfg(all(not(no_global_oom_handling), not(no_rc), not(no_sync), target_has_atomic = "ptr"))]
-pub mod task;
-#[cfg(test)]
-mod tests;
-pub mod vec;
-
-#[doc(hidden)]
-#[unstable(feature = "liballoc_internals", issue = "none", reason = "implementation detail")]
-pub mod __export {
-    pub use core::format_args;
-}
-
-#[cfg(test)]
-#[allow(dead_code)] // Not used in all configurations
-pub(crate) mod test_helpers {
-    /// Copied from `std::test_helpers::test_rng`, since these tests rely on the
-    /// seed not being the same for every RNG invocation too.
-    pub(crate) fn test_rng() -> rand_xorshift::XorShiftRng {
-        use std::hash::{BuildHasher, Hash, Hasher};
-        let mut hasher = std::hash::RandomState::new().build_hasher();
-        std::panic::Location::caller().hash(&mut hasher);
-        let hc64 = hasher.finish();
-        let seed_vec =
-            hc64.to_le_bytes().into_iter().chain(0u8..8).collect::<crate::vec::Vec<u8>>();
-        let seed: [u8; 16] = seed_vec.as_slice().try_into().unwrap();
-        rand::SeedableRng::from_seed(seed)
-    }
-}