Re: [PATCH 0/3] rust: Add irq abstraction, IrqSpinLock

[Lyude Paul <lyude@redhat.com>]

On Fri, 2024-07-26 at 07:39 +0200, Greg KH wrote:
> On Thu, Jul 25, 2024 at 06:27:49PM -0400, Lyude Paul wrote:
> > This adds a simple interface for disabling and enabling CPUs, along with
> > the ability to mark a function as expecting interrupts be disabled -
> > along with adding bindings for spin_lock_irqsave/spin_lock_irqrestore().
> 
> Do you have some example code that actually uses this?  Without that,
> it's hard, if not impossible, to review it to see how it works and if it
> works properly.

Yes - currently the project I've been working on to come up with rust KMS
bindings for the kernel uses it:

https://gitlab.freedesktop.org/lyudess/linux/-/blob/rvkms-wip/drivers/gpu/drm/rvkms/crtc.rs

I will make sure to mention it in future versions of this patch series. FWIW
as well: if we have some sort of way of writing unit tests for this in rust
I'd be happy to write some as well. It's probably going to take a while before
rvkms gets upstream, and I'd like to make sure that all of the dependencies it
needs get a chance for feedback as early as possible.

> 
> thanks,
> 
> greg k-h
> 

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

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