linux-kernel - Re: [PATCH 1/7] rust: sync: add `Arc` for ref-counted allocations

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Message-ID: <20221231195508.7783a774.gary@garyguo.net>
Date:   Sat, 31 Dec 2022 19:55:08 +0000
From:   Gary Guo <gary@...yguo.net>
To:     Wedson Almeida Filho <wedsonaf@...il.com>
Cc:     rust-for-linux@...r.kernel.org, Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Boqun Feng <boqun.feng@...il.com>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        linux-kernel@...r.kernel.org, Will Deacon <will@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH 1/7] rust: sync: add `Arc` for ref-counted allocations

On Wed, 28 Dec 2022 06:03:40 +0000
Wedson Almeida Filho <wedsonaf@...il.com> wrote:

> This is a basic implementation of `Arc` backed by C's `refcount_t`. It
> allows Rust code to idiomatically allocate memory that is ref-counted.
> 
> Cc: Will Deacon <will@...nel.org>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Boqun Feng <boqun.feng@...il.com>
> Cc: Mark Rutland <mark.rutland@....com>
> Signed-off-by: Wedson Almeida Filho <wedsonaf@...il.com>

Reviewed-by: Gary Guo <gary@...yguo.net>

> ---
>  rust/bindings/bindings_helper.h |   1 +
>  rust/bindings/lib.rs            |   1 +
>  rust/helpers.c                  |  19 ++++
>  rust/kernel/lib.rs              |   1 +
>  rust/kernel/sync.rs             |  10 ++
>  rust/kernel/sync/arc.rs         | 157 ++++++++++++++++++++++++++++++++
>  6 files changed, 189 insertions(+)
>  create mode 100644 rust/kernel/sync.rs
>  create mode 100644 rust/kernel/sync/arc.rs