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

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Message-ID: <cd077b6506b8adc0fdb2b661f4ebfbc9e5286345.camel@redhat.com>
Date: Fri, 26 Jul 2024 14:29:01 -0400
From: Lyude Paul <lyude@...hat.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: rust-for-linux@...r.kernel.org, Danilo Krummrich <dakr@...hat.com>, 
 airlied@...hat.com, Ingo Molnar <mingo@...hat.com>, Will Deacon
 <will@...nel.org>,  Waiman Long <longman@...hat.com>, 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>, Benno Lossin <benno.lossin@...ton.me>, Andreas
 Hindborg <a.hindborg@...sung.com>, Alice Ryhl <aliceryhl@...gle.com>,
 Martin Rodriguez Reboredo <yakoyoku@...il.com>, Trevor Gross
 <tmgross@...ch.edu>, Valentin Obst <kernel@...entinobst.de>, open list
 <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] rust: sync: Add IrqSpinLock

On Fri, 2024-07-26 at 09:48 +0200, Peter Zijlstra wrote:
> On Thu, Jul 25, 2024 at 06:27:52PM -0400, 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().
> 
> So aside from the horrendous camel-case thing, why are you naming this
> thing the wrong way around? Shouldn't it be SpinLockIrq rather than
> IrqSpinLock? Or possibly even SpinLockIrqSave?
> 
> Randomly changing the names of things isn't going to make it any easier
> for people to use this stuff.

Yeah you're probably right - I'll fix this on the next iteration

> 

-- 
Cheers,
 Lyude Paul (she/her)
 Software Engineer at Red Hat

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