Re: [PATCH v8] gpio/mpc8xxx: change irq handler from chained to normal

[Linus Walleij]

On Fri, Oct 11, 2019 at 3:07 AM Hui Song <hui.song_1@xxxxxxx> wrote:

> More than one gpio controllers can share one interrupt, change the
> driver to request shared irq.
>
> While this will work, it will mess up userspace accounting of the number
> of interrupts per second in tools such as vmstat.  The reason is that
> for every GPIO interrupt, /proc/interrupts records the count against GIC
> interrupt 68 or 69, as well as the GPIO itself.  So, for every GPIO
> interrupt, the total number of interrupts that the system has seen
> increments by two.
>
> Signed-off-by: Laurentiu Tudor <Laurentiu.Tudor@xxxxxxx>
> Signed-off-by: Alex Marginean <alexandru.marginean@xxxxxxx>
> Signed-off-by: Song Hui <hui.song_1@xxxxxxx>
> ---
> Changes in v8:
>         - merge two lines as one line to fit 80 characters.

Patch applied.

Yours,
Linus Walleij