[lttng-dev] Unexport of kvm_x86_ops vs tracer modules

Steven Rostedt rostedt at goodmis.org
Mon Apr 25 10:04:34 EDT 2022

On Fri, 8 Apr 2022 14:06:53 -0400 (EDT)
Mathieu Desnoyers <mathieu.desnoyers at efficios.com> wrote:
> Indeed, the fact that the TP_fast_assign snippets are embedded in the
> trace_event_raw_event_* symbols is an issue for LTTng. This ties those
> to ftrace.

Not just ftrace, perf does it too.

Now another solution is to make the fast assigns available to anyone, and
to allow you to simply pass in a pointer and size to have the data written
into it. That is, you get the results of the TRACE_EVENT and not have to
depend on internal data from the tracepoint.

-- Steve

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