Re: Need help with tracepoints

April 29, 2017


      29.04.2017 13:52, Matwey V. Kornilov пишет:
...
Hello,
I am following trace/tracepoints.txt guide to add some tracepoints to
already existing kernel module.
I've created include/trace/events/mysubsys.h
and added
#include <trace/events/mysubsys.h>
#define CREATE_TRACE_POINTS
DEFINE_TRACE(mysubsys_event1);
EXPORT_TRACEPOINT_SYMBOL_GPL(mysubsys_event1);
to the module sources. There are symbols *_mysubsys_event1 in module ko
file.
The issue is that I don't see my events in /sys/kernel/debug/tracing/events
Not even ./mysubsys path here.
Ok. I found. I had to use TRACE_EVENT() macro to use
/sys/kernel/debug/tracing/events interface