| From | Namhyung Kim <> | Subject | [PATCH 15/17] tools lib traceevent: Unregister handler when jbd2 plugin unloaded | Date | Wed, 15 Jan 2014 10:45:38 +0900 |
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The function handlers should be unregistered when the plugin unloaded otherwise they'll try to access invalid memory.
Cc: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> --- 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
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