Re: [PATCH] rust: sync: completion: mark inline complete_all and wait_for_completion

["Gary Guo" <gary@garyguo.net>]

On Mon Mar 16, 2026 at 8:21 AM GMT,  wrote:
> From: Fabricio Parra <a@alice0.com>

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Best,
Gary

>
> When building the kernel using the llvm-22.1.0-rust-1.93.1-x86_64
> toolchain provided by kernel.org with ARCH=x86_64, the following symbols
> are generated:
>
> $ nm vmlinux | grep ' _R'.*Completion | rustfilt
> ffffffff81827930 T <kernel::sync::completion::Completion>::complete_all
> ffffffff81827950 T <kernel::sync::completion::Completion>::wait_for_completion
>
> These Rust methods are thin wrappers around the C completion helpers
> `complete_all` and `wait_for_completion`. Mark them `#[inline]` to keep
> the wrapper pattern consistent with other small Rust helper methods.
>
> After applying this patch, the above command will produce no output.
>
> Link: https://github.com/Rust-for-Linux/linux/issues/1145
> Suggested-by: Alice Ryhl <aliceryhl@google.com>
> Signed-off-by: Fabricio Parra <a@alice0.com>
> ---
>  rust/kernel/sync/completion.rs | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/rust/kernel/sync/completion.rs b/rust/kernel/sync/completion.rs
> index c50012a940a3..35ff049ff078 100644
> --- a/rust/kernel/sync/completion.rs
> +++ b/rust/kernel/sync/completion.rs
> @@ -94,6 +94,7 @@ fn as_raw(&self) -> *mut bindings::completion {
>      ///
>      /// This method wakes up all tasks waiting on this completion; after this operation the
>      /// completion is permanently done, i.e. signals all current and future waiters.
> +    #[inline]
>      pub fn complete_all(&self) {
>          // SAFETY: `self.as_raw()` is a pointer to a valid `struct completion`.
>          unsafe { bindings::complete_all(self.as_raw()) };
> @@ -105,6 +106,7 @@ pub fn complete_all(&self) {
>      /// timeout.
>      ///
>      /// See also [`Completion::complete_all`].
> +    #[inline]
>      pub fn wait_for_completion(&self) {
>          // SAFETY: `self.as_raw()` is a pointer to a valid `struct completion`.
>          unsafe { bindings::wait_for_completion(self.as_raw()) };
>
> base-commit: 79e25710e7227228902d672417b552dd1d7e5d3b