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| author | Miguel Ojeda <ojeda@kernel.org> | 2024-08-14 18:37:22 +0200 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2024-08-21 00:37:02 +0200 |
| commit | 76501d19c6af43054492420ae53a9bd2d4de50b3 (patch) | |
| tree | 80ccfc2c33edb486b804a6239097b3f7f38501f3 /rust | |
| parent | 1d15880378662ade209eb9289f9f03c98b431254 (diff) | |
| download | lwn-76501d19c6af43054492420ae53a9bd2d4de50b3.tar.gz lwn-76501d19c6af43054492420ae53a9bd2d4de50b3.zip | |
rust: enable bindgen's `--enable-function-attribute-detection` flag
`bindgen` is able to detect certain function attributes and annotate
functions correspondingly in its output for the Rust side, when the
`--enable-function-attribute-detection` is passed.
In particular, it is currently able to use `__must_check` in C
(`#[must_use]` in Rust), which give us a bunch of annotations that are
nice to have to prevent possible issues in Rust abstractions, e.g.:
extern "C" {
+ #[must_use]
pub fn kobject_add(
kobj: *mut kobject,
parent: *mut kobject,
fmt: *const core::ffi::c_char,
...
) -> core::ffi::c_int;
}
Apparently, there are edge cases where this can make generation very slow,
which is why it is behind a flag [1], but it does not seem to affect us
in any major way at the moment.
Thus enable it.
Link: https://github.com/rust-lang/rust-bindgen/issues/1465 [1]
Link: https://lore.kernel.org/rust-for-linux/CANiq72=u5Nrz_NW3U3_VqywJkD8pECA07q2pFDd1wjtXOWdkAQ@mail.gmail.com/
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Tested-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://lore.kernel.org/r/20240814163722.1550064-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'rust')
| -rw-r--r-- | rust/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/rust/Makefile b/rust/Makefile index 7ea5905f544c..c24c3689e7b4 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -270,7 +270,7 @@ quiet_cmd_bindgen = BINDGEN $@ cmd_bindgen = \ $(BINDGEN) $< $(bindgen_target_flags) \ --use-core --with-derive-default --ctypes-prefix core::ffi --no-layout-tests \ - --no-debug '.*' \ + --no-debug '.*' --enable-function-attribute-detection \ -o $@ -- $(bindgen_c_flags_final) -DMODULE \ $(bindgen_target_cflags) $(bindgen_target_extra) |