Re: [PATCH 0/3] simulated interrupts

From: Thomas Gleixner
Date: Wed Jul 19 2017 - 08:25:28 EST


On Wed, 19 Jul 2017, Bartosz Golaszewski wrote:

> Some frameworks (e.g. iio, gpiolib) use irq_work to implement simulated
> interrupts that can be 'fired' from process context when needed and
> requested just like normal interrupts. This is useful for testing and
> development purposes.
>
> Currently this code is reimplemented by every user. This series
> proposes to add a new set of functions that can be used by drivers
> that want to simulate interrupts without having to duplicate any
> boilerplate code.
>
> The first patch adds a simple irq simulator framework. The second
> extends it with resource management. The third uses the new
> functionality in the gpio-mockup testing driver.
>
> NOTE: The next candidate for using this API would be iio-dummy-evgen.

I like the general idea - have not looked at the code yet. Just a quick
question: How many copies/variants of this scheme do we have in tree?

Thanks,

tglx