[lttng-dev] subsys.h?

[Thibault, Daniel]

> >    In https://www.kernel.org/doc/Documentation/trace/tracepoints.txt, there is prominent mention of an "include/trace/events/subsys.h".  Where is that header supposed to be?  I can't find it in either of the kernel or lttng sources.
> >
>
> subsys is the name of your subsystem. There is no literal subsys.h file.
>
> Jérémie

   Ah, that makes sense now.  The file should make that clear.  Perhaps change:

In order to use tracepoints, you should include linux/tracepoint.h.

In include/trace/events/subsys.h :

#undef TRACE_SYSTEM

   Into:

In order to use tracepoints, you should include linux/tracepoint.h.

In include/trace/events/<subsys>.h (where <subsys> is the kernel sub-system you want to add tracepoints to, such as 'block', 'power', or 'xen') :

#undef TRACE_SYSTEM

Daniel U. Thibault
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