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Message-Id: <20240327023531.187880-1-wedsonaf@gmail.com>
Date: Tue, 26 Mar 2024 23:35:21 -0300
From: Wedson Almeida Filho <wedsonaf@...il.com>
To: rust-for-linux@...r.kernel.org
Cc: Miguel Ojeda <ojeda@...nel.org>,
Alex Gaynor <alex.gaynor@...il.com>,
Boqun Feng <boqun.feng@...il.com>,
Gary Guo <gary@...yguo.net>,
Björn Roy Baron <bjorn3_gh@...tonmail.com>,
Benno Lossin <benno.lossin@...ton.me>,
Andreas Hindborg <a.hindborg@...sung.com>,
Alice Ryhl <aliceryhl@...gle.com>,
linux-kernel@...r.kernel.org,
Wedson Almeida Filho <walmeida@...rosoft.com>
Subject: [PATCH v2 00/10] Allocation APIs
From: Wedson Almeida Filho <walmeida@...rosoft.com>
Revamp how we use the `alloc` crate.
We currently have a fork of the crate with changes to `Vec`; other
changes have been upstreamed (to the Rust project). This series removes
the fork and exposes all the functionality as extension traits.
Additionally, it also introduces allocation flag parameters to all
functions that may result in allocations (e.g., `Box::new`, `Arc::new`,
`Vec::push`, etc.) without the `try_` prefix -- the names are available
because we build `alloc` with `no_global_oom_handling`.
Lastly, the series also removes our reliance on the `allocator_api`
unstable feature.
Long term, we still want to make such functionality available in
upstream Rust, but this allows us to make progress now and reduces our
maintainance burden.
In summary:
1. Removes `alloc` fork
2. Removes use of `allocator_api` unstable feature
3. Introduces flags (e.g., GFP_KERNEL, GFP_ATOMIC) when allocating
---
Changes in v2:
- Updated description of `alloc` crate.
- Renamed vecext and boxext modules to vec_ext and box_ext.
- Added derive directive to `AllocError`.
- Updated safety comment in `BoxExt::new`.
- Updated `VecExt::push` and `VecExt::extend_from_slice` to use
`spare_capacity_mut`
- Add directive to not compile `destructure` and `rebuild` in when `test` or
`testlib` are configured. Otherwise we have a warning because `push` and
`extend_from_slice` don't use them anymore.
- Updated indentation in `Arc::new_uninit`
- Moved the removal of `TryReserveError` convesion to `Error` to patch 7, where
usage of `TryReserveError` is actually removed.
- Link to v1: https://lore.kernel.org/rust-for-linux/20240325195418.166013-1-wedsonaf@gmail.com/T/#t
Wedson Almeida Filho (10):
rust: kernel: move `allocator` module under `alloc`
rust: alloc: introduce the `VecExt` trait
kbuild: use the upstream `alloc` crate
rust: alloc: remove our fork of the `alloc` crate
rust: alloc: introduce allocation flags
rust: alloc: introduce the `BoxExt` trait
rust: alloc: update `VecExt` to take allocation flags
rust: sync: update `Arc` and `UniqueArc` to take allocation flags
rust: init: update `init` module to take allocation flags
rust: kernel: remove usage of `allocator_api` unstable feature
rust/Makefile | 16 +-
rust/alloc/README.md | 36 -
rust/alloc/alloc.rs | 452 ----
rust/alloc/boxed.rs | 2463 -----------------
rust/alloc/collections/mod.rs | 160 --
rust/alloc/lib.rs | 288 --
rust/alloc/raw_vec.rs | 611 -----
rust/alloc/slice.rs | 890 -------
rust/alloc/vec/drain.rs | 255 --
rust/alloc/vec/extract_if.rs | 115 -
rust/alloc/vec/into_iter.rs | 454 ----
rust/alloc/vec/is_zero.rs | 204 --
rust/alloc/vec/mod.rs | 3683 --------------------------
rust/alloc/vec/partial_eq.rs | 49 -
rust/alloc/vec/set_len_on_drop.rs | 35 -
rust/alloc/vec/spec_extend.rs | 119 -
rust/bindings/bindings_helper.h | 3 +
rust/kernel/alloc.rs | 69 +
rust/kernel/{ => alloc}/allocator.rs | 6 +-
rust/kernel/alloc/box_ext.rs | 61 +
rust/kernel/alloc/vec_ext.rs | 124 +
rust/kernel/error.rs | 13 +-
rust/kernel/init.rs | 57 +-
rust/kernel/lib.rs | 5 +-
rust/kernel/prelude.rs | 2 +
rust/kernel/str.rs | 6 +-
rust/kernel/sync/arc.rs | 50 +-
rust/kernel/sync/condvar.rs | 2 +-
rust/kernel/sync/lock/mutex.rs | 2 +-
rust/kernel/sync/lock/spinlock.rs | 2 +-
rust/kernel/types.rs | 4 +-
rust/kernel/workqueue.rs | 14 +-
samples/rust/rust_minimal.rs | 6 +-
samples/rust/rust_print.rs | 4 +-
scripts/generate_rust_analyzer.py | 2 +-
35 files changed, 349 insertions(+), 9913 deletions(-)
delete mode 100644 rust/alloc/README.md
delete mode 100644 rust/alloc/alloc.rs
delete mode 100644 rust/alloc/boxed.rs
delete mode 100644 rust/alloc/collections/mod.rs
delete mode 100644 rust/alloc/lib.rs
delete mode 100644 rust/alloc/raw_vec.rs
delete mode 100644 rust/alloc/slice.rs
delete mode 100644 rust/alloc/vec/drain.rs
delete mode 100644 rust/alloc/vec/extract_if.rs
delete mode 100644 rust/alloc/vec/into_iter.rs
delete mode 100644 rust/alloc/vec/is_zero.rs
delete mode 100644 rust/alloc/vec/mod.rs
delete mode 100644 rust/alloc/vec/partial_eq.rs
delete mode 100644 rust/alloc/vec/set_len_on_drop.rs
delete mode 100644 rust/alloc/vec/spec_extend.rs
create mode 100644 rust/kernel/alloc.rs
rename rust/kernel/{ => alloc}/allocator.rs (96%)
create mode 100644 rust/kernel/alloc/box_ext.rs
create mode 100644 rust/kernel/alloc/vec_ext.rs
base-commit: 768409cff6cc89fe1194da880537a09857b6e4db
--
2.34.1
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