[PATCH 15/17] tools lib traceevent: Unregister handler when jbd2 plugin unloaded

[Namhyung Kim]

The function handlers should be unregistered when the plugin unloaded
otherwise they'll try to access invalid memory.

Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
---
 tools/lib/traceevent/plugin_jbd2.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/tools/lib/traceevent/plugin_jbd2.c b/tools/lib/traceevent/plugin_jbd2.c
index 2f93f81f0bac..88fe6fe872d5 100644
--- a/tools/lib/traceevent/plugin_jbd2.c
+++ b/tools/lib/traceevent/plugin_jbd2.c
@@ -66,3 +66,14 @@ 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_jbd2_dev_to_name,
+					 "jbd2_dev_to_name");
+
+	pevent_unregister_print_function(pevent,
+					 process_jiffies_to_msecs,
+					 "jiffies_to_msecs");
+}
-- 
1.7.11.7

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/