Re: [PATCH v5 6/7] rust: Add read_poll_timeout functions

[Boqun Feng]

On Fri, Nov 01, 2024 at 10:01:20AM +0900, FUJITA Tomonori wrote:
[...]
> @@ -44,6 +45,7 @@
>  pub mod page;
>  pub mod prelude;
>  pub mod print;
> +pub mod processor;
>  pub mod sizes;
>  pub mod rbtree;
>  mod static_assert;
> diff --git a/rust/kernel/processor.rs b/rust/kernel/processor.rs
> new file mode 100644
> index 000000000000..eeeff4be84fa
> --- /dev/null
> +++ b/rust/kernel/processor.rs

What else would we put into this file? `smp_processor_id()` and IPI
functionality? If so, I would probably want to rename this to cpu.rs.

Regards,
Boqun

> @@ -0,0 +1,13 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +//! Processor related primitives.
> +//!
> +//! C header: [`include/linux/processor.h`](srctree/include/linux/processor.h).
> +
> +/// Lower CPU power consumption or yield to a hyperthreaded twin processor.
> +///
> +/// It also happens to serve as a compiler barrier.
> +pub fn cpu_relax() {
> +    // SAFETY: FFI call.
> +    unsafe { bindings::cpu_relax() }
> +}
> -- 
> 2.43.0
> 
>