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2025-03-13docs: rust: remove spurious item in `expect` listMiguel Ojeda
commit b160dc46dd9af4001c802cc9c7d68b6ba58d27c4 upstream. This list started as a "when to prefer `expect`" list, but at some point during writing I changed it to a "prefer `expect` unless..." one. However, the first bullet remained, which does not make sense anymore. Thus remove it. In addition, fix nearby typo. Fixes: 04866494e936 ("Documentation: rust: discuss `#[expect(...)]` in the guidelines") Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20241117133127.473937-1-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-03-13Documentation: rust: discuss `#[expect(...)]` in the guidelinesMiguel Ojeda
commit 04866494e936d041fd196d3a36aecd979e4ef078 upstream. Discuss `#[expect(...)]` in the Lints sections of the coding guidelines document, which is an upcoming feature in Rust 1.81.0, and explain that it is generally to be preferred over `allow` unless there is a reason not to use it (e.g. conditional compilation being involved). Tested-by: Gary Guo <gary@garyguo.net> Reviewed-by: Gary Guo <gary@garyguo.net> Link: https://lore.kernel.org/r/20240904204347.168520-19-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-03-13Documentation: rust: add coding guidelines on lintsMiguel Ojeda
commit 139d396572ec4ba6e8cc5c02f5c8d5d1139be4b7 upstream. In the C side, disabling diagnostics locally, i.e. within the source code, is rare (at least in the kernel). Sometimes warnings are manipulated via the flags at the translation unit level, but that is about it. In Rust, it is easier to change locally the "level" of lints (e.g. allowing them locally). In turn, this means it is easier to globally enable more lints that may trigger a few false positives here and there that need to be allowed locally, but that generally can spot issues or bugs. Thus document this. Reviewed-by: Trevor Gross <tmgross@umich.edu> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Tested-by: Gary Guo <gary@garyguo.net> Reviewed-by: Gary Guo <gary@garyguo.net> Link: https://lore.kernel.org/r/20240904204347.168520-17-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-08-21docs: rust: remove unintended blockquote in Coding GuidelinesVincent Woltmann
An unordered list in coding-guidelines.rst was indented, producing a blockquote around it and making it look more indented than expected. Remove the indentation to only output an unordered list. Reported-by: Miguel Ojeda <ojeda@kernel.org> Closes: https://github.com/Rust-for-Linux/linux/issues/1063 Fixes: d07479b211b7 ("docs: add Rust documentation") Signed-off-by: Vincent Woltmann <vincent@woltmann.art> Link: https://lore.kernel.org/r/20240816200339.2495875-1-vincent@woltmann.art [ Reworded title. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2023-12-21rust: support `srctree`-relative linksMiguel Ojeda
Some of our links use relative paths in order to point to files in the source tree, e.g.: //! C header: [`include/linux/printk.h`](../../../../include/linux/printk.h) /// [`struct mutex`]: ../../../../include/linux/mutex.h These are problematic because they are hard to maintain and do not support `O=` builds. Instead, provide support for `srctree`-relative links, e.g.: //! C header: [`include/linux/printk.h`](srctree/include/linux/printk.h) /// [`struct mutex`]: srctree/include/linux/mutex.h The links are fixed after `rustdoc` generation to be based on the absolute path to the source tree. Essentially, this is the automatic version of Tomonori's fix [1], suggested by Gary [2]. Suggested-by: Gary Guo <gary@garyguo.net> Reported-by: FUJITA Tomonori <fujita.tomonori@gmail.com> Closes: https://lore.kernel.org/r/20231026.204058.2167744626131849993.fujita.tomonori@gmail.com [1] Fixes: 48fadf440075 ("docs: Move rustdoc output, cross-reference it") Link: https://lore.kernel.org/rust-for-linux/20231026154525.6d14b495@eugeo/ [2] Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com> Reviewed-by: Benno Lossin <benno.lossin@proton.me> Link: https://lore.kernel.org/r/20231215235428.243211-1-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2022-09-28docs: add Rust documentationMiguel Ojeda
Most of the documentation for Rust is written within the source code itself, as it is idiomatic for Rust projects. This applies to both the shared infrastructure at `rust/` as well as any other Rust module (e.g. drivers) written across the kernel. However, these documents contain general information that does not fit particularly well in the source code, like the Quick Start guide. It also contains a few other small changes elsewhere in the documentation folder. Reviewed-by: Kees Cook <keescook@chromium.org> Co-developed-by: Alex Gaynor <alex.gaynor@gmail.com> Signed-off-by: Alex Gaynor <alex.gaynor@gmail.com> Co-developed-by: Finn Behrens <me@kloenk.de> Signed-off-by: Finn Behrens <me@kloenk.de> Co-developed-by: Adam Bratschi-Kaye <ark.email@gmail.com> Signed-off-by: Adam Bratschi-Kaye <ark.email@gmail.com> Co-developed-by: Wedson Almeida Filho <wedsonaf@google.com> Signed-off-by: Wedson Almeida Filho <wedsonaf@google.com> Co-developed-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Co-developed-by: Sven Van Asbroeck <thesven73@gmail.com> Signed-off-by: Sven Van Asbroeck <thesven73@gmail.com> Co-developed-by: Wu XiangCheng <bobwxc@email.cn> Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Co-developed-by: Gary Guo <gary@garyguo.net> Signed-off-by: Gary Guo <gary@garyguo.net> Co-developed-by: Boris-Chengbiao Zhou <bobo1239@web.de> Signed-off-by: Boris-Chengbiao Zhou <bobo1239@web.de> Co-developed-by: Yuki Okushi <jtitor@2k36.org> Signed-off-by: Yuki Okushi <jtitor@2k36.org> Co-developed-by: Wei Liu <wei.liu@kernel.org> Signed-off-by: Wei Liu <wei.liu@kernel.org> Co-developed-by: Daniel Xu <dxu@dxuuu.xyz> Signed-off-by: Daniel Xu <dxu@dxuuu.xyz> Co-developed-by: Julian Merkle <me@jvmerkle.de> Signed-off-by: Julian Merkle <me@jvmerkle.de> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>