Need help with tracepoints

Peter Senna Tschudin peter.senna at gmail.com
Sat Apr 29 07:46:20 EDT 2017


Hello Matwey,

This doesn't answer your question, but did you take a look at perf and
it's ability to do trace points?

See this link: http://www.brendangregg.com/perf.html#Tracepoints

On Sat, Apr 29, 2017 at 12:52 PM, Matwey V. Kornilov
<matwey.kornilov at gmail.com> wrote:
> 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.
>
>
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-- 
Peter



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