linux-kernel - Re: [PATCH 2/2] rust: sync: add `CondVar::wait

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Message-ID: <ZXChjmoKPj3XnJgG@Boquns-Mac-mini.home>
Date:   Wed, 6 Dec 2023 08:30:06 -0800
From:   Boqun Feng <boqun.feng@...il.com>
To:     Alice Ryhl <aliceryhl@...gle.com>
Cc:     Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Gary Guo <gary@...yguo.net>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        Benno Lossin <benno.lossin@...ton.me>,
        Andreas Hindborg <a.hindborg@...sung.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        Waiman Long <longman@...hat.com>,
        rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] rust: sync: add `CondVar::wait_timeout`

On Wed, Dec 06, 2023 at 10:09:24AM +0000, Alice Ryhl wrote:
[...]
> +
> +/// The return type of `wait_timeout`.
> +pub enum CondVarTimeoutResult {
> +    /// The timeout was reached.
> +    Timeout,
> +    /// Somebody woke us up.
> +    Woken {
> +        /// Remaining sleep duration.
> +        jiffies: u64,

I have a Jiffies definition in the my upcoming timer patchset:

/// The time unit of Linux kernel. One jiffy equals (1/HZ) second.
pub type Jiffies = core::ffi::c_ulong;

Maybe you can add that (in a separate patch) in kernel::time?

Regards,
Boqun

> +    },
> +    /// A signal occurred.
> +    Signal {
> +        /// Remaining sleep duration.
> +        jiffies: u64,
> +    },
> +}
[...]