On Thu, Dec 20, 2018 at 11:47 AM Yonghong Yan <yany...@gmail.com> wrote: > > I am looking at the following example from lttng-ust manual. The same TP_ARGS > ( ... ) are repeated in both the TRACEPOINT_EVENT_CLASS and > TRACEPOINT_EVENT_INSTANCE definition. My understanding is that it actually > allows using different arguments, even in this example it is the same. Am I > right?
No it does not: they need to match. See <https://github.com/lttng/lttng-ust/commit/c75c0422c64f33c0102e1778cecc812c58b700e5>. Phil > > I also like the feature of having one TP_ARGS in the TRACEPOINT_EVENT_CLASS > that declares the arguments for several TRACEPOINT_EVENT_INSTANCE so we do > not need to have TP_ARGS in TRACEPOINT_EVENT_INSTANCE. Is that possible? > > Thank you > Yonghong > > TRACEPOINT_EVENT_CLASS( > my_provider, > my_tracepoint_class, > TP_ARGS( > int, my_integer_arg, > struct app_struct *, app_struct_arg > ), > TP_FIELDS( > ctf_integer(int, a, my_integer_arg) > ctf_integer(unsigned long, b, app_struct_arg->b) > ctf_string(c, app_struct_arg->c) > ) > ) > > TRACEPOINT_EVENT_INSTANCE( > my_provider, > my_tracepoint_class, > event_instance1, > TP_ARGS( > int, my_integer_arg, > struct app_struct *, app_struct_arg > ) > ) > > TRACEPOINT_EVENT_INSTANCE( > my_provider, > my_tracepoint_class, > event_instance2, > TP_ARGS( > int, my_integer_arg, > struct app_struct *, app_struct_arg > ) > ) > > > _______________________________________________ > lttng-dev mailing list > lttng-dev@lists.lttng.org > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
