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

[Lyude Paul <lyude@redhat.com>]

On Fri, 2024-07-26 at 13:52 -0400, Lyude Paul wrote:
> 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.

A heads up - I didn't realize that the rustdocs in the kernel actually -do-
get run in unit tests, so actually all of the code examples in the
documentation should be working examples if I understand correctly. I will
also keep this mind in the future and make sure to actually run all of these
:)

> 
> > 
> > thanks,
> > 
> > greg k-h
> > 
> 

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

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