From patchwork Mon May 23 02:01:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Miguel Ojeda X-Patchwork-Id: 12858403 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9C30C433F5 for ; Mon, 23 May 2022 02:03:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237016AbiEWCDB (ORCPT ); Sun, 22 May 2022 22:03:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40090 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234027AbiEWCC7 (ORCPT ); Sun, 22 May 2022 22:02:59 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 08BCE35AB2; Sun, 22 May 2022 19:02:54 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 5E8C1B80CBE; Mon, 23 May 2022 02:02:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EE23BC385AA; Mon, 23 May 2022 02:02:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1653271371; bh=ERwtvphja6U/1OhlgSfEhE5NLiXGu89oIBPKPKs7U8Q=; h=From:To:Cc:Subject:Date:From; b=YYroKg8JiImIEyhxQqxr9dwSw6Gvz1uWiyFTs6/Arz+D78M6TjE788dmc4o88D3+C yz9ghXro/LMf4BlMmFJJKGCcEc/yLsjL5rV7MjA4Hz2v3iDCB0BmwwzOTY9RPA9avG nk14pZu9MJJUMFRvuU+GioRXKmkkvpJxj6j1DzgNG7Id/s3k2fz4KstwpRDeUVGgec /lE4TfznmsR1NMdvfmW9HbRP82C815EbADCMxN60Za904DFLaE8qS4X2vIgDRInjq4 EmvQ0mzLy51/Oxa6eLaoEG5p/QnLNDGqO6RTYT5D24v7d8empSxpr6/M1HyKTSFtSS zUUdug5Vel7Kg== From: Miguel Ojeda To: Linus Torvalds , Greg Kroah-Hartman Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Jarkko Sakkinen , Miguel Ojeda , kunit-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-perf-users@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-um@lists.infradead.org, live-patching@vger.kernel.org Subject: [PATCH v7 00/25] Rust support Date: Mon, 23 May 2022 04:01:13 +0200 Message-Id: <20220523020209.11810-1-ojeda@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org 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@vger.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 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