rust: impl_flags: use bit helper in example

2026-08-10T04:44:10Z

Use bit_u32() instead of open-coding shifts in the impl_flags! example. This demonstrates the checked bit helper and ensures that bit positions remain within the underlying u32 type. Suggested-by: Miguel Ojeda Link: https://github.com/Rust-for-Linux/linux/issues/1244 Assisted-by: OpenCode:openai/gpt-5.6-sol Signed-off-by: Kosumi Chan Suggested-by: Greg Kroah-Hartman Link: https://lore.kernel.org/rust-for-linux/2026071054-hazing-antirust-8e40@gregkh/ Reviewed-by: Alexandre Courbot Link: https://patch.msgid.link/20260711082327.3062227-1-chankocyo@gmail.com Signed-off-by: Miguel Ojeda

rust: add `impl_flags!` macro for defining common bitflag operations

2026-02-02T07:09:11Z

We have seen a proliferation of `mod_whatever::foo::Flags` being defined with essentially the same implementation for `BitAnd`, `BitOr`, `.contains()` etc. This macro aims to bring a solution for this, allowing to generate these methods for user-defined structs. With some use cases in KMS and upcoming GPU drivers. Link: https://rust-for-linux.zulipchat.com/#narrow/channel/288089-General/topic/We.20really.20need.20a.20common.20.60Flags.60.20type Suggested-by: Daniel Almeida Suggested-by: Lyude Paul Reviewed-by: Daniel Almeida Reviewed-by: Lyude Paul Tested-by: Andreas Hindborg Reviewed-by: Andreas Hindborg Signed-off-by: Filipe Xavier Link: https://patch.msgid.link/20260117-feat-add-bitmask-macro-v9-1-45ea1f00f846@gmail.com [ Implemented missing `BitXorAssign<$flag> for $flags`. Sorted `impl`s. Removed prelude addition for now -- I asked the team and they also felt it wasn't needed. We can always add it later on if needed. Fixed intra-doc link (by removing the sentence since it was superfluous anyway). Simplified `empty()` title. Reworded commit slightly. Added docs to enum variants in example to avoid 'missing_docs' lint when used in actual code. - Miguel ] Signed-off-by: Miguel Ojeda

linux-rng/rust/kernel/impl_flags.rs, branch master

rust: impl_flags: use bit helper in example

rust: add `impl_flags!` macro for defining common bitflag operations