linux-kernel - Re: [PATCH v5 3/3] rust: sync: Add SpinLockIrq

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Message-ID: <30da83b3-5be0-431b-b57c-c9d371747e7d@proton.me>
Date: Fri, 13 Sep 2024 14:15:45 +0000
From: Benno Lossin <benno.lossin@...ton.me>
To: Lyude Paul <lyude@...hat.com>, rust-for-linux@...r.kernel.org
Cc: Danilo Krummrich <dakr@...hat.com>, airlied@...hat.com, Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>, Waiman Long <longman@...hat.com>, Peter Zijlstra <peterz@...radead.org>, Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org, Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, Wedson Almeida Filho <wedsonaf@...il.com>, Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, Björn Roy Baron <bjorn3_gh@...tonmail.com>, Andreas Hindborg <a.hindborg@...sung.com>, Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, Martin Rodriguez Reboredo <yakoyoku@...il.com>, Valentin Obst <kernel@...entinobst.de>
Subject: Re: [PATCH v5 3/3] rust: sync: Add SpinLockIrq

On 12.09.24 21:04, Lyude Paul wrote:
> A variant of SpinLock that is expected to be used in noirq contexts, and
> thus requires that the user provide an kernel::irq::IrqDisabled to prove
> they are in such a context upon lock acquisition. This is the rust
> equivalent of spin_lock_irqsave()/spin_lock_irqrestore().
> 
> Signed-off-by: Lyude Paul <lyude@...hat.com>
> 
> ---
> 
> V2:
> * s/IrqSpinLock/SpinLockIrq/
> * Implement `lock::Backend` now that we have `Context`
> * Add missing periods
> * Make sure rustdoc examples compile correctly
> * Add documentation suggestions
> 
> Signed-off-by: Lyude Paul <lyude@...hat.com>
> ---
>  rust/kernel/sync.rs               |   2 +-
>  rust/kernel/sync/lock/spinlock.rs | 104 ++++++++++++++++++++++++++++++
>  2 files changed, 105 insertions(+), 1 deletion(-)

Reviewed-by: Benno Lossin <benno.lossin@...ton.me>

---
Cheers,
Benno