Re: [PATCH] gpio: add a real time compliance checklist

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Fri, Oct 2, 2015 at 11:31 PM, Linus Walleij <linus.walleij@xxxxxxxxxx> wrote:

> Add some information about real time compliance to the driver document.
> Inspired by Grygorii Strashko's real time compliance patches.
>
> Cc: Grygorii Strashko <grygorii.strashko@xxxxxx>
> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
> ---
> Grygorii: can you help out with some heavy comments on all I do wrong
> in this document? Thx. For example I have no real clue of the difference
> between generic_handle_irq() and handle_nested_irq() in this context.
>
> We also need to think about new helper functions that can aid driver writers
> in getting drivers real time compliant and properly preemptible. Should we
> have the goal to make *all* drivers using the helpers use nested/threaded IRQs,
> or do you think there are (old) systems around that would suffer too much
> from this?

Poking Grygorii about this!

Yours,
Linus Walleij
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