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Message-ID: <20240704170738.3621-1-dakr@redhat.com>
Date: Thu, 4 Jul 2024 19:06:28 +0200
From: Danilo Krummrich <dakr@...hat.com>
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Danilo Krummrich <dakr@...hat.com>
Subject: [PATCH 00/20] Generic `Allocator` support for Rust
Hi,
This patch series adds generic kernel allocator support for Rust, which so far
is limited to `kmalloc` allocations.
In order to abstain from (re-)adding unstable Rust features to the kernel, this
patch series does not extend the `Allocator` trait from Rust's `alloc` crate,
nor does it extend the `BoxExt` and `VecExt` extensions.
Instead, this series introduces a kernel specific `Allocator` trait, which is
implemented by the `Kmalloc`, `Vmalloc` and `KVmalloc` allocators, also
implemented in the context of this series.
As a consequence we need our own `Box` and `Vec` types, which are implemented by
this series as `KBox` and `KVec`.
With that, we can start using `KBox` and `KVec` throughout the tree and remove
the now obolete extensions `BoxExt` and `VecExt`.
For a final cleanup, this series removes the last minor dependencies to Rust's
`alloc` crate and removes it from the entire kernel build.
The series ensures not to break the `rusttest` make target by implementing the
`allocator_test` module providing a stub implementation for all kernel
`Allocator`s.
This patch series passes all KUnit tests, including the ones added by this
series. Additionally, the tests were run with `kmemleak` and `KASAN` enabled,
without any issues.
This series is also available in [1].
[1] https://gitlab.freedesktop.org/drm/nova/-/tree/topic/allocator
Danilo Krummrich (20):
rust: alloc: add `Allocator` trait
rust: alloc: separate `aligned_size` from `krealloc_aligned`
rust: alloc: rename `KernelAllocator` to `Kmalloc`
rust: alloc: implement `Allocator` for `Kmalloc`
rust: alloc: add module `allocator_test`
rust: alloc: remove `krealloc_aligned`
rust: alloc: implement `Vmalloc` allocator
rust: alloc: implement `KVmalloc` allocator
rust: types: implement `Unique<T>`
rust: alloc: implement `KBox`
rust: treewide: switch to `KBox`
rust: alloc: remove `BoxExt` extension
rust: alloc: implement `KVec`
rust: alloc: implement `IntoIterator` for `KVec`
rust: alloc: implement `collect` for `IntoIter`
rust: treewide: switch to `KVec`
rust: alloc: remove `VecExt` extension
rust: error: use `core::alloc::LayoutError`
rust: str: test: replace `alloc::format`
kbuild: rust: remove the `alloc` crate
rust/Makefile | 44 +-
rust/bindings/bindings_helper.h | 1 +
rust/exports.c | 1 -
rust/kernel/alloc.rs | 92 ++-
rust/kernel/alloc/allocator.rs | 177 +++++-
rust/kernel/alloc/allocator_test.rs | 23 +
rust/kernel/alloc/box_ext.rs | 56 --
rust/kernel/alloc/kbox.rs | 333 +++++++++++
rust/kernel/alloc/kvec.rs | 861 ++++++++++++++++++++++++++++
rust/kernel/alloc/vec_ext.rs | 182 ------
rust/kernel/error.rs | 2 +-
rust/kernel/init.rs | 72 +--
rust/kernel/init/__internal.rs | 2 +-
rust/kernel/lib.rs | 1 -
rust/kernel/prelude.rs | 5 +-
rust/kernel/str.rs | 78 ++-
rust/kernel/sync/arc.rs | 17 +-
rust/kernel/sync/condvar.rs | 5 +-
rust/kernel/sync/lock/mutex.rs | 3 +-
rust/kernel/sync/lock/spinlock.rs | 3 +-
rust/kernel/sync/locked_by.rs | 2 +-
rust/kernel/types.rs | 186 +++++-
rust/kernel/workqueue.rs | 22 +-
samples/rust/rust_minimal.rs | 4 +-
scripts/Makefile.build | 7 +-
25 files changed, 1769 insertions(+), 410 deletions(-)
create mode 100644 rust/kernel/alloc/allocator_test.rs
delete mode 100644 rust/kernel/alloc/box_ext.rs
create mode 100644 rust/kernel/alloc/kbox.rs
create mode 100644 rust/kernel/alloc/kvec.rs
delete mode 100644 rust/kernel/alloc/vec_ext.rs
base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0
--
2.45.2
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