linux-kernel - Re: [PATCH v2 5/8] rust: time: Add Instant::from

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Message-ID: <87o6wnkqn1.fsf@kernel.org>
Date: Wed, 23 Apr 2025 14:29:22 +0200
From: Andreas Hindborg <a.hindborg@...nel.org>
To: Lyude Paul <lyude@...hat.com>
Cc: rust-for-linux@...r.kernel.org,  linux-kernel@...r.kernel.org,  Boqun
 Feng <boqun.feng@...il.com>,  FUJITA Tomonori <fujita.tomonori@...il.com>,
  Frederic Weisbecker <frederic@...nel.org>,  Thomas Gleixner
 <tglx@...utronix.de>,  Anna-Maria Behnsen <anna-maria@...utronix.de>,
  John Stultz <jstultz@...gle.com>,  Stephen Boyd <sboyd@...nel.org>,
  Miguel Ojeda <ojeda@...nel.org>,  Alex Gaynor <alex.gaynor@...il.com>,
  Gary Guo <gary@...yguo.net>,  Björn Roy Baron
 <bjorn3_gh@...tonmail.com>,
  Benno Lossin <benno.lossin@...ton.me>,  Alice Ryhl
 <aliceryhl@...gle.com>,  Trevor Gross <tmgross@...ch.edu>,  Danilo
 Krummrich <dakr@...nel.org>
Subject: Re: [PATCH v2 5/8] rust: time: Add Instant::from_nanos()

Lyude Paul <lyude@...hat.com> writes:

> For implementing Rust bindings which can return a point in time.
>
> Signed-off-by: Lyude Paul <lyude@...hat.com>
> ---
>  rust/kernel/time.rs | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/rust/kernel/time.rs b/rust/kernel/time.rs
> index 8d6aa88724ad8..545963140f180 100644
> --- a/rust/kernel/time.rs
> +++ b/rust/kernel/time.rs
> @@ -83,6 +83,14 @@ pub fn elapsed(&self) -> Delta {
>      pub(crate) fn as_nanos(self) -> i64 {
>          self.inner
>      }
> +
> +    #[expect(unused)]
> +    #[inline]
> +    pub(crate) fn from_nanos(nanos: i64) -> Self {

Should we `debug_assert!` a positive value here?


Best regards,
Andreas Hindborg