Following the advice of Masami, I implemented the GPIO trace on top of the event triggers (git://git.yoctoproject.org/linux-yocto-contrib tzanussi/event-triggers-v11)
Alexandre, This version uses the old gpio API (i-e gpio identifed by integers). GPIOs are not requested in this patch, allowing any gpio to be used as a probe. It's a bit dangerous but I think it's okay for the moment. When this patch is adapted to the gpio descriptor API, we'll have to find a way to request the gpio properly. Jean-Jacques Hiblot (1): Tracing events with GPIOs include/linux/ftrace_event.h | 1 + kernel/trace/trace_events_trigger.c | 285 ++++++++++++++++++++++++++++++++++++ 2 files changed, 286 insertions(+) -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
