From mboxrd@z Thu Jan  1 00:00:00 1970
From: matwey.kornilov@gmail.com (Matwey V. Kornilov)
Date: Sat, 29 Apr 2017 15:50:46 +0300
Subject: Need help with tracepoints
In-Reply-To: <oe1r9b$n26$1@blaine.gmane.org>
References: <oe1r9b$n26$1@blaine.gmane.org>
Message-ID: <oe2270$5gp$1@blaine.gmane.org>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

29.04.2017 13:52, Matwey V. Kornilov ?????:
> 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