[tip:perf/core] tools lib traceevent: Unregister handler when cfg80211 plugin is unloaded

[tip-bot for Namhyung Kim <tipbot@zytor.com>]

Commit-ID:  6024cf3898d25088b01025d72a6929839de9c7b6
Gitweb:     http://git.kernel.org/tip/6024cf3898d25088b01025d72a6929839de9c7b6
Author:     Namhyung Kim <namhyung@kernel.org>
AuthorDate: Thu, 16 Jan 2014 11:31:15 +0900
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 16 Jan 2014 16:26:25 -0300

tools lib traceevent: Unregister handler when cfg80211 plugin is unloaded

The function handler should be unregistered when the plugin is unloaded
otherwise it'll try to access invalid memory.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1389839478-5887-10-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/lib/traceevent/plugin_cfg80211.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/lib/traceevent/plugin_cfg80211.c b/tools/lib/traceevent/plugin_cfg80211.c
index 57e9822..c066b25 100644
--- a/tools/lib/traceevent/plugin_cfg80211.c
+++ b/tools/lib/traceevent/plugin_cfg80211.c
@@ -22,3 +22,9 @@ int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
 				       PEVENT_FUNC_ARG_VOID);
 	return 0;
 }
+
+void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
+{
+	pevent_unregister_print_function(pevent, process___le16_to_cpup,
+					 "__le16_to_cpup");
+}