linux/rust/kernel/bits.rs, branch v6.17Mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
https://git.shady.money/linux/atom?h=v6.172025-07-19T21:18:18Zrust: bits: add support for bits/genmask macros2025-07-19T21:18:18ZDaniel Almeidadaniel.almeida@collabora.com2025-07-14T23:29:58Zurn:sha1:cc84ef3b88f407e8bd5a5f7b6906d1e69851c856
In light of bindgen being unable to generate bindings for macros, and
owing to the widespread use of these macros in drivers, manually define
the bit and genmask C macros in Rust.
The *_checked version of the functions provide runtime checking while
the const version performs compile-time assertions on the arguments via
the build_assert!() macro.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Link: https://lore.kernel.org/r/20250714-topics-tyr-genmask2-v9-1-9e6422cbadb6@collabora.com
[ `expect`ed Clippy warning in doctests, hid single `use`, grouped
examples. Reworded title. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>