| Message ID | 20220523020209.11810-1-ojeda@kernel.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | Rust support | expand |
On Mon, May 23, 2022 at 4:42 PM Gary Guo <gary@garyguo.net> wrote: > > On Mon, 23 May 2022 11:37:16 -0700 > Nick Desaulniers <ndesaulniers@google.com> wrote: > > > Also, I'm not sure my concern about explicit build failures for C code > > was ever addressed? We have a constant problem with `long long` > > division on ARCH=arm32 and ARCH=i386 in C code. > > https://lore.kernel.org/lkml/CAKwvOdk+A2PBdjSFVUhj4xyCGCKujtej1uPgywQgrKPiK2ksPw@mail.gmail.com/ > > > > > +#[cfg(target_arch = "arm")] > > > +define_panicking_intrinsics!("`u64` division/modulo should not be > > > used", { > > > + __aeabi_uldivmod, > > > + __mulodi4, > > > +}); > > Starting in LLVM 14 (used in Rust 1.60+), __mulodi4 will no longer be > generated. So that can be removed. I'm familiar, but good catch. ;) https://reviews.llvm.org/D108936 https://reviews.llvm.org/D108842 https://reviews.llvm.org/D108844 https://reviews.llvm.org/D112750 https://reviews.llvm.org/D108928 https://reviews.llvm.org/D108939 https://bugs.llvm.org/show_bug.cgi?id=28629 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103034 > > As for __aeabi_uldivmod, is there any reason that it can't just be > defined in arch/arm/lib? There are quite a few __aeabi functions already > defined there. Indeed. arch/arm/kernel/armksyms.c and arch/arm/lib/lib1funcs.S This is the previous thread I recall w/ Linus: https://lore.kernel.org/llvm/CAHk-=wiydA=Oay+NB2m2ewCHpPEcoU51qPFrzsekFoPu7QPtuw@mail.gmail.com/ If CONFIG_RUST provides those symbols, it will hide the linkage failures that we try to use to spot & avoid 64b division that's open coded using the / binary operator, rather than the kernel's do_div() and friends. > > The source of __aeabi_uldivmod in compiler-rt seems quite simple, just > delegating to __uldivmoddi4. I think just changing that to > div64_u64_rem should do the job? Maybe; send a patch and see what happens. There's probably other 32b architectures that will need other symbols that also handle 64b division though, so it's not as simple as providing __aeabi_uldivmod for ARM. There's probably someone from linux-arm-kernel that can provide additional context. https://lore.kernel.org/linux-arm-kernel/alpine.LFD.2.00.1104271305580.24613@xanadu.home/ is pretty old, but refers to policies that seem to pre-exist other references to __aeabi_uldivmod on that list. arch/nios2/kernel/nios2_ksyms.c exports __udivmoddi4, but it also explicitly links against libgcc. I'm guessing that's frowned upon, but not out of the question relative to having the kernel ported to the architecture at all. > > https://android.googlesource.com/toolchain/compiler-rt/+/release_32/lib/arm/aeabi_uldivmod.S Here's the latest source. https://github.com/llvm/llvm-project/blob/main/compiler-rt/lib/builtins/arm/aeabi_uldivmod.S and __uldivmoddi4: https://github.com/llvm/llvm-project/blob/main/compiler-rt/lib/builtins/udivmoddi4.c By chance, does any of the rust code in this series use open coded division w/ 64 bit operands (rather than using do_div) by accident? I'm also curious about the panic message for 128b operands. IIUC, those are functions that may have `long long` operands. On 32b ARM, which is ILP32, I'd have expected `long long` to be 64b, not 128b. Message might be misleading.
Hey,
Maybe I am just missing something blatantly obvious here, but trying
to build rust support in -next fails for me. I am using ClangBuiltLinux
clang version 15.0.0 5b0788fef86ed7008a11f6ee19b9d86d42b6fcfa and LLD
15.0.0. Is it just expected that building -next with rust support is
not a good idea?
My defconfig is the default RISC-V one plus:
CONFIG_RUST=y
CONFIG_SAMPLES=y
CONFIG_SAMPLES_RUST=y
CONFIG_SAMPLE_RUST_MINIMAL=y
Thanks,
Conor.
Fail log:
UPD rust/target.json
BINDGEN rust/bindings_generated.rs
BINDGEN rust/bindings_helpers_generated.rs
RUSTC L rust/core.o
EXPORTS rust/exports_core_generated.h
RUSTC P rust/libmacros.so
RUSTC L rust/compiler_builtins.o
RUSTC L rust/alloc.o
RUSTC L rust/build_error.o
EXPORTS rust/exports_alloc_generated.h
RUSTC L rust/kernel.o
error[E0428]: the name `maple_enode` is defined multiple times
--> linux/rust/bindings_generated.rs:18009:1
|
18006 | pub struct maple_enode {
| ---------------------- previous definition of the type `maple_enode` here
...
18009 | pub type maple_enode = *mut maple_enode;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `maple_enode` redefined here
|
= note: `maple_enode` must be defined only once in the type namespace of this module
error[E0428]: the name `maple_pnode` is defined multiple times
--> linux/rust/bindings_generated.rs:18015:1
|
18012 | pub struct maple_pnode {
| ---------------------- previous definition of the type `maple_pnode` here
...
18015 | pub type maple_pnode = *mut maple_pnode;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `maple_pnode` redefined here
|
= note: `maple_pnode` must be defined only once in the type namespace of this module
error[E0391]: cycle detected when expanding type alias `bindings::bindings_raw::maple_pnode`
--> linux/rust/bindings_generated.rs:18015:29
|
18015 | pub type maple_pnode = *mut maple_pnode;
| ^^^^^^^^^^^
|
= note: ...which immediately requires expanding type alias `bindings::bindings_raw::maple_pnode` again
= note: type aliases cannot be recursive
= help: consider using a struct, enum, or union instead to break the cycle
= help: see <https://doc.rust-lang.org/reference/types.html#recursive-types> for more information
note: cycle used when computing type of `bindings::bindings_raw::maple_range_64::parent`
--> linux/rust/bindings_generated.rs:18058:22
|
18058 | pub parent: *mut maple_pnode,
| ^^^^^^^^^^^
error[E0391]: cycle detected when expanding type alias `bindings::bindings_raw::maple_enode`
--> linux/rust/bindings_generated.rs:18009:29
|
18009 | pub type maple_enode = *mut maple_enode;
| ^^^^^^^^^^^
|
= note: ...which immediately requires expanding type alias `bindings::bindings_raw::maple_enode` again
= note: type aliases cannot be recursive
= help: consider using a struct, enum, or union instead to break the cycle
= help: see <https://doc.rust-lang.org/reference/types.html#recursive-types> for more information
note: cycle used when computing type of `bindings::bindings_raw::maple_topiary::next`
--> linux/rust/bindings_generated.rs:18340:20
|
18340 | pub next: *mut maple_enode,
| ^^^^^^^^^^^
error[E0117]: only traits defined in the current crate can be implemented for arbitrary types
--> linux/rust/bindings_generated.rs:18005:10
|
18005 | #[derive(Copy, Clone)]
| ^^^^
| |
| impl doesn't use only types from inside the current crate
| `*mut [type error]` is not defined in the current crate
|
= note: define and implement a trait or new type instead
= note: this error originates in the derive macro `Copy` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0117]: only traits defined in the current crate can be implemented for arbitrary types
--> linux/rust/bindings_generated.rs:18011:10
|
18011 | #[derive(Copy, Clone)]
| ^^^^
| |
| impl doesn't use only types from inside the current crate
| `*mut [type error]` is not defined in the current crate
|
= note: define and implement a trait or new type instead
= note: this error originates in the derive macro `Copy` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0117]: only traits defined in the current crate can be implemented for arbitrary types
--> linux/rust/bindings_generated.rs:18005:16
|
18005 | #[derive(Copy, Clone)]
| ^^^^^
| |
| impl doesn't use only types from inside the current crate
| `*mut [type error]` is not defined in the current crate
|
= note: define and implement a trait or new type instead
= note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0117]: only traits defined in the current crate can be implemented for arbitrary types
--> linux/rust/bindings_generated.rs:18011:16
|
18011 | #[derive(Copy, Clone)]
| ^^^^^
| |
| impl doesn't use only types from inside the current crate
| `*mut [type error]` is not defined in the current crate
|
= note: define and implement a trait or new type instead
= note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 8 previous errors
Hi Conor, On Sat, Jul 16, 2022 at 2:42 PM Conor Dooley <conor@kernel.org> wrote: > > Maybe I am just missing something blatantly obvious here, but trying > to build rust support in -next fails for me. I am using ClangBuiltLinux > clang version 15.0.0 5b0788fef86ed7008a11f6ee19b9d86d42b6fcfa and LLD > 15.0.0. Is it just expected that building -next with rust support is > not a good idea? Please see https://github.com/Rust-for-Linux/linux/issues/795 for details about the maple tree issue. I will update the `rust-next` branch next week with the new version of the patches; but if you are interested in developing, please use the development `rust` branch instead in GitHub for the moment. Cheers, Miguel
On 16/07/2022 14:36, Miguel Ojeda wrote: > Hi Conor, > > On Sat, Jul 16, 2022 at 2:42 PM Conor Dooley <conor@kernel.org> wrote: >> >> Maybe I am just missing something blatantly obvious here, but trying >> to build rust support in -next fails for me. I am using ClangBuiltLinux >> clang version 15.0.0 5b0788fef86ed7008a11f6ee19b9d86d42b6fcfa and LLD >> 15.0.0. Is it just expected that building -next with rust support is >> not a good idea? > > Please see https://github.com/Rust-for-Linux/linux/issues/795 for > details about the maple tree issue. Ah right, sorry for the noise so. I checked the ml but didn't see a report there. > > I will update the `rust-next` branch next week with the new version of > the patches; but if you are interested in developing, please use the > development `rust` branch instead in GitHub for the moment. Thanks Miguel, good to know! I'll just wait around for a new version. Just been trying to get my CI etc in order for when rust support lands, but it sounds like I should be okay as it's a known problem & not some only-broken-on-riscv thing. Thanks, Conor.
On Sat, Jul 16, 2022 at 3:51 PM <Conor.Dooley@microchip.com> wrote: > > Ah right, sorry for the noise so. I checked the ml but didn't see a > report there. No apologies needed -- thanks to you for the report, instead! :) > Thanks Miguel, good to know! I'll just wait around for a new version. > Just been trying to get my CI etc in order for when rust support lands, > but it sounds like I should be okay as it's a known problem & not some > only-broken-on-riscv thing. Yeah, it is a simple `bindgen` issue. Thanks a lot for making the effort to prepare your CI in advance! Cheers, Miguel
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 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