From: Eugene.Ivanov@orc-group.com (Eugene Ivanov)
Subject: [lttng-dev] Runtime issue with mismatched arg name in TRACEPOINT_EVENT_INSTANCE and TRACEPOINT_EVENT_CLASS
Date: Thu, 4 Jun 2015 10:39:12 +0300 [thread overview]
Message-ID: <557000A0.2010206@orc-group.com> (raw)
Hi,
Recently I've used different names for the argument in
TRACEPOINT_EVENT_INSTANCE and TRACEPOINT_EVENT_CLASS. Everything
compiles, the probe is registered, but can't be activated.
__tracepoint_provider___probe.state is always 0 despite whatever is
shown in 'lttng list session_name'. In this case I would expect
compilation failure.
Probes example, note some_id and MISMATCHED_id:
TRACEPOINT_EVENT_CLASS(hello, myclass,
TP_ARGS(const unsigned long *, some_id),
TP_FIELDS(ctf_array(unsigned long, some_identifier, some_id, 2)))
TRACEPOINT_EVENT_INSTANCE(hello, myclass, probe_name, TP_ARGS(const
unsigned long *, MISMATCHED_id))
--
Eugene Ivanov
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