From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Mon, 16 Dec 2013 13:36:06 +0000 (-0500)
Subject: Fix: baddr_statedump tracepoint registration
X-Git-Tag: v2.4.0-rc3~6
X-Git-Url: https://git.lttng.org/?a=commitdiff_plain;h=f0cc794d37abf59b4b8079612c7aa03dc305d92f;hp=f0cc794d37abf59b4b8079612c7aa03dc305d92f;p=lttng-ust.git

Fix: baddr_statedump tracepoint registration

Make sure that the ust_baddr_statedump probe is registered prior to
using the tracepoint in lttng_ust_baddr_statedump(). This fix solves the
issue that in rare cases the very first ust_baddr_statedump events were
missing.

Use a reference counting approach that allows constructors/destructors
of the probe to be called many times, as long as the number of calls to
constructor matches the number of calls to destructor.

Reported-by: Paul Woegerer <paul_woegerer@mentor.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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