On Sun, Sep 03, 2023 at 05:48:14PM -0700, Zev Weiss wrote:
On Sun, Sep 03, 2023 at 06:04:23AM PDT, Greg Kroah-Hartman wrote:
> But yes, reading a sysfs should almost never cause a side affect at all.
> But what do you mean by "clear events?"
I mean that when the sysfs file is read, the state variable whose value it
exposes is also cleared as a side-effect (so the read operation "consumes"
the value it returns) -- see the implementation in patch 2 of this series
(specifically the 'data->events = 0' assignment in events_show()):
It's a clear on read interrupt.