Re: [PATCH v2 2/2] rust: std_vendor: add `likely()`, `unlikely()` and `cold_path()`

On Tue Apr 7, 2026 at 11:39 AM BST, Miguel Ojeda wrote:
> On Mon, Apr 6, 2026 at 11:59 AM Miguel Ojeda <[email protected]> wrote:
>>
>> +#[cfg(CONFIG_RUSTC_HAS_COLD_PATH)]
>> +pub use core::hint::cold_path;
>
> This works inside the `kernel` crate, but Sashiko is correct: we will
> need to enable the feature to use it later.
>
> And while it can be done, it is not as simple as usual, because it is
> conditional.
>
> I was already on the fence of making a single function to share the
> signature anyway, so I think I will just do that in v3.

It might worth adding a user for this too in v3. `warn_flags!()` would be a good
example.

Best,
Gary