> And if switching to just using file descriptors doesn't work, then try
> also doing the following: (this requires that the module be loaded
> already)
> echo 1 > /proc/gpio-event/debug-ioctl
> echo 1 > /proc/gpio-event/debug-trace
> and report back the output.
> The events that are generated include the timestamp from the kernel at
> the time that they were captured, so you don't necessarily need to
> grab the time again.
> Dave Hylands

When using file descriptors I get the same thing.
In "/proc/gpio-event" there is only "pins".
( -sh: can't create /proc/gpio-event/debug-ioctl: nonexistent directory )