Re: [PATCH v7 3/6] rust: irq: add support for non-threaded IRQs and handlers

["Danilo Krummrich" <dakr@kernel.org>]

On Wed Jul 23, 2025 at 6:18 PM CEST, Daniel Almeida wrote:
>> On 23 Jul 2025, at 13:11, Danilo Krummrich <dakr@kernel.org> wrote:
>> On Wed Jul 23, 2025 at 6:07 PM CEST, Daniel Almeida wrote:
>>> On top of that, we can use the
>>> words "interior mutability" somewhere in the example as well to make it even
>>> clearer.
>> 
>> You *can* have this example and I encourage it, I think it is valuable. You can
>> have spinlock or mutex for this purpose in threaded handler, no?
>
> Right, but then what goes in the hard-irq part for ThreadedHandler? I guess we
> can leave that one blank then and only touch the data from the threaded part.
>
> If that’s the case, then I think it can work too.

For instance, yes. It's a very common pattern to only have the threaded handler
but not the hard irq handler implemented.

IMHO, for ThreadedHandler the hard irq handler should even have a default blank
implementation.