[Bug translator/19396] systemtap can't find certain kernel tracepoints

[dsmith at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19396

--- Comment #4 from David Smith <dsmith at redhat dot com> ---
(In reply to Josh Stone from comment #2)
> In Fedora, I only see the module_* tracepoints without any "system:" prefix.
> include/trace/events/module.h has:
> 
>   #ifdef CREATE_TRACE_POINTS
>   #undef TRACE_SYSTEM
>   #define TRACE_SYSTEM module
>   #endif
> 
> AFAICS we don't set CREATE_TRACE_POINTS.  I'm not sure, but maybe we should.
> 
> FWIW sched.h and writeback.h also use CREATE_TRACE_POINTS, but only to guard
> some helper functions, not to guard TRACE_SYSTEM.  I think that will
> harmless to tracequery if those functions are added, as long as they do
> compile ok.

Yeah, I've got a fix for that problem (but haven't checked it in yet). I tried
just defining CREATE_TRACE_POINTS, but that caused other compile problems
later. So, I just hardcoded TRACE_SYSTEM for module.h, which seems to work.

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