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Message-Id: <20220523020209.11810-1-ojeda@kernel.org>
Date: Mon, 23 May 2022 04:01:13 +0200
From: Miguel Ojeda <ojeda@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
Jarkko Sakkinen <jarkko@...nel.org>,
Miguel Ojeda <ojeda@...nel.org>, kunit-dev@...glegroups.com,
linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org,
linux-gpio@...r.kernel.org, linux-kbuild@...r.kernel.org,
linux-kselftest@...r.kernel.org, linux-perf-users@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org, linux-riscv@...ts.infradead.org,
linux-um@...ts.infradead.org, live-patching@...r.kernel.org
Subject: [PATCH v7 00/25] Rust support
Rust support
This is the patch series (v7) to add support for Rust as a second
language to the Linux kernel.
If you are interested in following this effort, please join us in
the mailing list at:
rust-for-linux@...r.kernel.org
and take a look at the project itself at:
https://github.com/Rust-for-Linux
As usual, special thanks go to ISRG (Internet Security Research
Group) and Google for their financial support on this endeavor.
Cheers,
Miguel
--
# Rust support
This cover letter explains the major changes and updates done since
the previous ones. For those, please see:
RFC: https://lore.kernel.org/lkml/20210414184604.23473-1-ojeda@kernel.org/
v1: https://lore.kernel.org/lkml/20210704202756.29107-1-ojeda@kernel.org/
v2: https://lore.kernel.org/lkml/20211206140313.5653-1-ojeda@kernel.org/
v3: https://lore.kernel.org/lkml/20220117053349.6804-1-ojeda@kernel.org/
v4: https://lore.kernel.org/lkml/20220212130410.6901-1-ojeda@kernel.org/
v5: https://lore.kernel.org/lkml/20220317181032.15436-1-ojeda@kernel.org/
v6: https://lore.kernel.org/lkml/20220507052451.12890-1-ojeda@kernel.org/
This is a small round to address the comments made in v6 plus a few
related changes:
- Added `%pA` to `Documentation/core-api/printk-formats.rst`.
- Added `checkpatch.pl` patch to search for `%pA` in C code.
- Added `checkpatch.pl` patch to enable language-independent checks.
- Added UML (x86_64) support, for KUnit (thanks David Gow!).
- Added inline licensing information ("Apache-2.0 OR MIT") in
the commit message of the `alloc` patch, as well as in
`rust/alloc/README.md` in the following patch.
- Added SPDX license identifiers to `Documentation/rust/`.
- Reformatted `Documentation/rust/arch-support.rst` list table
into simple table.
- Removed logo from documentation patch; used Linux GIF one for
the Rust generated docs in its place (to be replaced with
the SVG one once available).
- Used `"GPL"` instead of `"GPL v2"` for the `license` field of the
`module!` macro.
- Moved `module_misc_device!` macro in `samples/rust/rust_random.rs`
to the top of the file in `samples/rust/` for consistency.
- Sorted `#include` lists in `rust/kernel/bindings_helper.h`
and `rust/helpers.c`.
- Fixed some English typos.
- Made the patches more `checkpatch.pl`-clean overall.
- Picked up Reviewed-by and Acked-by tags.
## Patch series status
The Rust support is still to be considered experimental. However,
support is good enough that kernel developers can start working on the
Rust abstractions for subsystems and write drivers and other modules.
The current series has just arrived in `linux-next`, as usual.
Similarly, the preview docs for this series can be seen at:
https://rust-for-linux.github.io/docs/kernel/
As usual, please see the following link for the live list of unstable
Rust features we are using:
https://github.com/Rust-for-Linux/linux/issues/2
## Conferences, meetings and liaisons
We would like to remind everyone about the Rust MC (microconference)
of LPC 2022 (Linux Plumbers Conference):
https://lpc.events/event/16/contributions/1159/
The Rust MC intends to cover talks and discussions on both Rust for
Linux as well as other non-kernel Rust topics. The Call for Proposals
is open!
## Acknowledgements
The signatures in the main commits correspond to the people that
wrote code that has ended up in them at the present time. For details
on contributions to code and discussions, please see our repository:
https://github.com/Rust-for-Linux/linux
However, we would like to give credit to everyone that has contributed
in one way or another to the Rust for Linux project. Since the
previous cover letter:
- Kees Cook for his reviews of some of the v6 patches.
- David Gow and Brendan Higgins for their reviews of the KUnit
prerequisite patch and their feedback.
- Jonathan Corbet and Akira Yokosawa for their review of the
documentation patch and feedback on documentation rules.
- Gary Guo for working on improvements to the Rust compiler that
could make our `static_assert!` macro applicable in more cases.
- bjorn3 for working on making `rustc_parse_format` compile on
a stable Rust compiler so that it may be used by lightweight
formatting systems (for instance, by the kernel).
- As usual, bjorn3 and Gary Guo for all the input on Rust compiler
details, reviews and suggestions.
- Esteban Blanc, Arthur Cohen and Martin Schmidt for rebasing their
SPI abstraction work.
- Maciej Falkowski for continuing his work on the Samsung Exynos
TRNG driver and the required abstractions around it, such as
adding `delay`, `ktime` and `iopoll` abstractions, new methods
to `platform::Device` and run-time power management abstractions.
- Yuheng Su for working on cleaning up the `Module::init` interface.
- Peng Hao for working on wrapping `mm_struct`.
- Sergio González Collado for continuing his work on the GitHub CI
problem matchers.
- Wei Liu for taking the time to answer questions from newcomers
in Zulip.
- Philip Li, Yujie Liu et al. for continuing their work on adding
Rust support to the Intel 0DAY/LKP kernel test robot.
- Philip Herron and Arthur Cohen (and his supporters Open Source
Security and Embecosm) et al. for their ongoing work on GCC Rust.
- Antoni Boucher (and his supporters) et al. for their ongoing
work on `rustc_codegen_gcc`.
- Mats Larsen, Marc Poulhiès et al. for their ongoing work on
improving Rust support in Compiler Explorer.
- Many folks that have reported issues, tested the project,
helped spread the word, joined discussions and contributed in
other ways!
Please see also the acknowledgements on the previous cover letters.
Boqun Feng (1):
kallsyms: avoid hardcoding the buffer size
Gary Guo (2):
rust: add `build_error` crate
vsprintf: add new `%pA` format specifier
Miguel Ojeda (18):
kallsyms: support "big" kernel symbols
kallsyms: increase maximum kernel symbol length to 512
kunit: take `kunit_assert` as `const`
rust: add C helpers
rust: add `compiler_builtins` crate
rust: import upstream `alloc` crate
rust: adapt `alloc` crate to the kernel
rust: add `macros` crate
rust: export generated symbols
scripts: checkpatch: diagnose uses of `%pA` in the C side
scripts: checkpatch: enable language-independent checks for Rust
scripts: add `rustdoc_test_{builder,gen}.py` scripts
scripts: add `generate_rust_analyzer.py` scripts
scripts: decode_stacktrace: demangle Rust symbols
docs: add Rust documentation
Kbuild: add Rust support
samples: add Rust examples
MAINTAINERS: Rust
Wedson Almeida Filho (4):
rust: add `kernel` crate's `sync` module
rust: add `kernel` crate
[RFC] drivers: gpio: PrimeCell PL061 in Rust
[RFC] drivers: android: Binder IPC in Rust
.gitignore | 5 +
.rustfmt.toml | 12 +
Documentation/core-api/printk-formats.rst | 10 +
Documentation/doc-guide/kernel-doc.rst | 3 +
Documentation/index.rst | 1 +
Documentation/kbuild/kbuild.rst | 17 +
Documentation/kbuild/makefiles.rst | 50 +-
Documentation/process/changes.rst | 41 +
Documentation/rust/arch-support.rst | 25 +
Documentation/rust/coding-guidelines.rst | 216 ++
Documentation/rust/general-information.rst | 79 +
Documentation/rust/index.rst | 22 +
Documentation/rust/quick-start.rst | 232 ++
MAINTAINERS | 15 +
Makefile | 175 +-
arch/Kconfig | 6 +
arch/arm/Kconfig | 1 +
arch/arm64/Kconfig | 1 +
arch/powerpc/Kconfig | 1 +
arch/riscv/Kconfig | 1 +
arch/riscv/Makefile | 5 +
arch/um/Kconfig | 1 +
arch/x86/Kconfig | 1 +
arch/x86/Makefile | 14 +
drivers/android/Kconfig | 6 +
drivers/android/Makefile | 2 +
drivers/android/allocation.rs | 266 ++
drivers/android/context.rs | 80 +
drivers/android/defs.rs | 99 +
drivers/android/node.rs | 476 +++
drivers/android/process.rs | 960 +++++
drivers/android/range_alloc.rs | 189 +
drivers/android/rust_binder.rs | 111 +
drivers/android/thread.rs | 870 +++++
drivers/android/transaction.rs | 326 ++
drivers/gpio/Kconfig | 8 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio_pl061_rust.rs | 370 ++
include/kunit/test.h | 2 +-
include/linux/kallsyms.h | 2 +-
include/linux/spinlock.h | 25 +-
include/uapi/linux/android/binder.h | 28 +-
init/Kconfig | 45 +-
kernel/kallsyms.c | 26 +-
kernel/livepatch/core.c | 4 +-
lib/Kconfig.debug | 155 +
lib/kunit/test.c | 4 +-
lib/vsprintf.c | 13 +
rust/.gitignore | 10 +
rust/Makefile | 398 +++
rust/alloc/README.md | 33 +
rust/alloc/alloc.rs | 438 +++
rust/alloc/borrow.rs | 498 +++
rust/alloc/boxed.rs | 2007 +++++++++++
rust/alloc/collections/mod.rs | 156 +
rust/alloc/fmt.rs | 601 ++++
rust/alloc/lib.rs | 226 ++
rust/alloc/macros.rs | 127 +
rust/alloc/raw_vec.rs | 567 +++
rust/alloc/slice.rs | 1282 +++++++
rust/alloc/str.rs | 632 ++++
rust/alloc/string.rs | 2869 +++++++++++++++
rust/alloc/vec/drain.rs | 186 +
rust/alloc/vec/drain_filter.rs | 145 +
rust/alloc/vec/into_iter.rs | 356 ++
rust/alloc/vec/is_zero.rs | 106 +
rust/alloc/vec/mod.rs | 3362 ++++++++++++++++++
rust/alloc/vec/partial_eq.rs | 49 +
rust/alloc/vec/set_len_on_drop.rs | 30 +
rust/alloc/vec/spec_extend.rs | 174 +
rust/bindgen_parameters | 17 +
rust/build_error.rs | 29 +
rust/compiler_builtins.rs | 57 +
rust/exports.c | 20 +
rust/helpers.c | 644 ++++
rust/kernel/allocator.rs | 65 +
rust/kernel/amba.rs | 257 ++
rust/kernel/bindings.rs | 47 +
rust/kernel/bindings_helper.h | 46 +
rust/kernel/build_assert.rs | 82 +
rust/kernel/c_types.rs | 119 +
rust/kernel/chrdev.rs | 207 ++
rust/kernel/clk.rs | 79 +
rust/kernel/cred.rs | 46 +
rust/kernel/device.rs | 546 +++
rust/kernel/driver.rs | 442 +++
rust/kernel/error.rs | 565 +++
rust/kernel/file.rs | 860 +++++
rust/kernel/gpio.rs | 478 +++
rust/kernel/hwrng.rs | 242 ++
rust/kernel/io_buffer.rs | 153 +
rust/kernel/io_mem.rs | 275 ++
rust/kernel/iov_iter.rs | 81 +
rust/kernel/irq.rs | 411 +++
rust/kernel/kasync.rs | 6 +
rust/kernel/kasync/net.rs | 322 ++
rust/kernel/kunit.rs | 91 +
rust/kernel/lib.rs | 261 ++
rust/kernel/linked_list.rs | 247 ++
rust/kernel/miscdev.rs | 291 ++
rust/kernel/mm.rs | 149 +
rust/kernel/module_param.rs | 498 +++
rust/kernel/net.rs | 392 ++
rust/kernel/net/filter.rs | 447 +++
rust/kernel/of.rs | 63 +
rust/kernel/pages.rs | 144 +
rust/kernel/platform.rs | 223 ++
rust/kernel/power.rs | 118 +
rust/kernel/prelude.rs | 36 +
rust/kernel/print.rs | 405 +++
rust/kernel/random.rs | 42 +
rust/kernel/raw_list.rs | 361 ++
rust/kernel/rbtree.rs | 563 +++
rust/kernel/revocable.rs | 161 +
rust/kernel/security.rs | 38 +
rust/kernel/static_assert.rs | 38 +
rust/kernel/std_vendor.rs | 160 +
rust/kernel/str.rs | 597 ++++
rust/kernel/sync.rs | 161 +
rust/kernel/sync/arc.rs | 503 +++
rust/kernel/sync/condvar.rs | 138 +
rust/kernel/sync/guard.rs | 169 +
rust/kernel/sync/locked_by.rs | 111 +
rust/kernel/sync/mutex.rs | 153 +
rust/kernel/sync/nowait.rs | 188 +
rust/kernel/sync/revocable.rs | 250 ++
rust/kernel/sync/rwsem.rs | 197 +
rust/kernel/sync/seqlock.rs | 202 ++
rust/kernel/sync/smutex.rs | 295 ++
rust/kernel/sync/spinlock.rs | 360 ++
rust/kernel/sysctl.rs | 199 ++
rust/kernel/task.rs | 175 +
rust/kernel/types.rs | 679 ++++
rust/kernel/user_ptr.rs | 175 +
rust/macros/helpers.rs | 79 +
rust/macros/lib.rs | 94 +
rust/macros/module.rs | 631 ++++
samples/Kconfig | 2 +
samples/Makefile | 1 +
samples/rust/Kconfig | 140 +
samples/rust/Makefile | 16 +
samples/rust/hostprogs/.gitignore | 3 +
samples/rust/hostprogs/Makefile | 5 +
samples/rust/hostprogs/a.rs | 7 +
samples/rust/hostprogs/b.rs | 5 +
samples/rust/hostprogs/single.rs | 12 +
samples/rust/rust_chrdev.rs | 50 +
samples/rust/rust_minimal.rs | 35 +
samples/rust/rust_miscdev.rs | 143 +
samples/rust/rust_module_parameters.rs | 69 +
samples/rust/rust_netfilter.rs | 54 +
samples/rust/rust_platform.rs | 22 +
samples/rust/rust_print.rs | 54 +
samples/rust/rust_random.rs | 60 +
samples/rust/rust_semaphore.rs | 171 +
samples/rust/rust_semaphore_c.c | 212 ++
samples/rust/rust_stack_probing.rs | 36 +
samples/rust/rust_sync.rs | 93 +
scripts/.gitignore | 1 +
scripts/Kconfig.include | 6 +-
scripts/Makefile | 3 +
scripts/Makefile.build | 60 +
scripts/Makefile.debug | 10 +
scripts/Makefile.host | 34 +-
scripts/Makefile.lib | 12 +
scripts/Makefile.modfinal | 8 +-
scripts/cc-version.sh | 12 +-
scripts/checkpatch.pl | 8 +-
scripts/decode_stacktrace.sh | 14 +
scripts/generate_rust_analyzer.py | 134 +
scripts/generate_rust_target.rs | 227 ++
scripts/is_rust_module.sh | 13 +
scripts/kallsyms.c | 47 +-
scripts/kconfig/confdata.c | 75 +
scripts/min-tool-version.sh | 6 +
scripts/rust-is-available-bindgen-libclang.h | 2 +
scripts/rust-is-available.sh | 158 +
scripts/rustdoc_test_builder.py | 59 +
scripts/rustdoc_test_gen.py | 164 +
tools/include/linux/kallsyms.h | 2 +-
tools/lib/perf/include/perf/event.h | 2 +-
tools/lib/symbol/kallsyms.h | 2 +-
182 files changed, 37614 insertions(+), 69 deletions(-)
create mode 100644 .rustfmt.toml
create mode 100644 Documentation/rust/arch-support.rst
create mode 100644 Documentation/rust/coding-guidelines.rst
create mode 100644 Documentation/rust/general-information.rst
create mode 100644 Documentation/rust/index.rst
create mode 100644 Documentation/rust/quick-start.rst
create mode 100644 drivers/android/allocation.rs
create mode 100644 drivers/android/context.rs
create mode 100644 drivers/android/defs.rs
create mode 100644 drivers/android/node.rs
create mode 100644 drivers/android/process.rs
create mode 100644 drivers/android/range_alloc.rs
create mode 100644 drivers/android/rust_binder.rs
create mode 100644 drivers/android/thread.rs
create mode 100644 drivers/android/transaction.rs
create mode 100644 drivers/gpio/gpio_pl061_rust.rs
create mode 100644 rust/.gitignore
create mode 100644 rust/Makefile
create mode 100644 rust/alloc/README.md
create mode 100644 rust/alloc/alloc.rs
create mode 100644 rust/alloc/borrow.rs
create mode 100644 rust/alloc/boxed.rs
create mode 100644 rust/alloc/collections/mod.rs
create mode 100644 rust/alloc/fmt.rs
create mode 100644 rust/alloc/lib.rs
create mode 100644 rust/alloc/macros.rs
create mode 100644 rust/alloc/raw_vec.rs
create mode 100644 rust/alloc/slice.rs
create mode 100644 rust/alloc/str.rs
create mode 100644 rust/alloc/string.rs
create mode 100644 rust/alloc/vec/drain.rs
create mode 100644 rust/alloc/vec/drain_filter.rs
create mode 100644 rust/alloc/vec/into_iter.rs
create mode 100644 rust/alloc/vec/is_zero.rs
create mode 100644 rust/alloc/vec/mod.rs
create mode 100644 rust/alloc/vec/partial_eq.rs
create mode 100644 rust/alloc/vec/set_len_on_drop.rs
create mode 100644 rust/alloc/vec/spec_extend.rs
create mode 100644 rust/bindgen_parameters
create mode 100644 rust/build_error.rs
create mode 100644 rust/compiler_builtins.rs
create mode 100644 rust/exports.c
create mode 100644 rust/helpers.c
create mode 100644 rust/kernel/allocator.rs
create mode 100644 rust/kernel/amba.rs
create mode 100644 rust/kernel/bindings.rs
create mode 100644 rust/kernel/bindings_helper.h
create mode 100644 rust/kernel/build_assert.rs
create mode 100644 rust/kernel/c_types.rs
create mode 100644 rust/kernel/chrdev.rs
create mode 100644 rust/kernel/clk.rs
create mode 100644 rust/kernel/cred.rs
create mode 100644 rust/kernel/device.rs
create mode 100644 rust/kernel/driver.rs
create mode 100644 rust/kernel/error.rs
create mode 100644 rust/kernel/file.rs
create mode 100644 rust/kernel/gpio.rs
create mode 100644 rust/kernel/hwrng.rs
create mode 100644 rust/kernel/io_buffer.rs
create mode 100644 rust/kernel/io_mem.rs
create mode 100644 rust/kernel/iov_iter.rs
create mode 100644 rust/kernel/irq.rs
create mode 100644 rust/kernel/kasync.rs
create mode 100644 rust/kernel/kasync/net.rs
create mode 100644 rust/kernel/kunit.rs
create mode 100644 rust/kernel/lib.rs
create mode 100644 rust/kernel/linked_list.rs
create mode 100644 rust/kernel/miscdev.rs
create mode 100644 rust/kernel/mm.rs
create mode 100644 rust/kernel/module_param.rs
create mode 100644 rust/kernel/net.rs
create mode 100644 rust/kernel/net/filter.rs
create mode 100644 rust/kernel/of.rs
create mode 100644 rust/kernel/pages.rs
create mode 100644 rust/kernel/platform.rs
create mode 100644 rust/kernel/power.rs
create mode 100644 rust/kernel/prelude.rs
create mode 100644 rust/kernel/print.rs
create mode 100644 rust/kernel/random.rs
create mode 100644 rust/kernel/raw_list.rs
create mode 100644 rust/kernel/rbtree.rs
create mode 100644 rust/kernel/revocable.rs
create mode 100644 rust/kernel/security.rs
create mode 100644 rust/kernel/static_assert.rs
create mode 100644 rust/kernel/std_vendor.rs
create mode 100644 rust/kernel/str.rs
create mode 100644 rust/kernel/sync.rs
create mode 100644 rust/kernel/sync/arc.rs
create mode 100644 rust/kernel/sync/condvar.rs
create mode 100644 rust/kernel/sync/guard.rs
create mode 100644 rust/kernel/sync/locked_by.rs
create mode 100644 rust/kernel/sync/mutex.rs
create mode 100644 rust/kernel/sync/nowait.rs
create mode 100644 rust/kernel/sync/revocable.rs
create mode 100644 rust/kernel/sync/rwsem.rs
create mode 100644 rust/kernel/sync/seqlock.rs
create mode 100644 rust/kernel/sync/smutex.rs
create mode 100644 rust/kernel/sync/spinlock.rs
create mode 100644 rust/kernel/sysctl.rs
create mode 100644 rust/kernel/task.rs
create mode 100644 rust/kernel/types.rs
create mode 100644 rust/kernel/user_ptr.rs
create mode 100644 rust/macros/helpers.rs
create mode 100644 rust/macros/lib.rs
create mode 100644 rust/macros/module.rs
create mode 100644 samples/rust/Kconfig
create mode 100644 samples/rust/Makefile
create mode 100644 samples/rust/hostprogs/.gitignore
create mode 100644 samples/rust/hostprogs/Makefile
create mode 100644 samples/rust/hostprogs/a.rs
create mode 100644 samples/rust/hostprogs/b.rs
create mode 100644 samples/rust/hostprogs/single.rs
create mode 100644 samples/rust/rust_chrdev.rs
create mode 100644 samples/rust/rust_minimal.rs
create mode 100644 samples/rust/rust_miscdev.rs
create mode 100644 samples/rust/rust_module_parameters.rs
create mode 100644 samples/rust/rust_netfilter.rs
create mode 100644 samples/rust/rust_platform.rs
create mode 100644 samples/rust/rust_print.rs
create mode 100644 samples/rust/rust_random.rs
create mode 100644 samples/rust/rust_semaphore.rs
create mode 100644 samples/rust/rust_semaphore_c.c
create mode 100644 samples/rust/rust_stack_probing.rs
create mode 100644 samples/rust/rust_sync.rs
create mode 100755 scripts/generate_rust_analyzer.py
create mode 100644 scripts/generate_rust_target.rs
create mode 100755 scripts/is_rust_module.sh
create mode 100644 scripts/rust-is-available-bindgen-libclang.h
create mode 100755 scripts/rust-is-available.sh
create mode 100755 scripts/rustdoc_test_builder.py
create mode 100755 scripts/rustdoc_test_gen.py
base-commit: 4b0986a3613c92f4ec1bdc7f60ec66fea135991f
--
2.36.1
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