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

From: tip-bot for Namhyung Kim
Date: Sun Jan 19 2014 - 07:25:29 EST

Commit-ID: a157112cfc67b3889f6493933cbd32620aa4be18
Gitweb: http://git.kernel.org/tip/a157112cfc67b3889f6493933cbd32620aa4be18
Author: Namhyung Kim <namhyung@xxxxxxxxxx>
AuthorDate: Thu, 16 Jan 2014 11:31:17 +0900
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 16 Jan 2014 16:26:25 -0300

tools lib traceevent: Unregister handler when scsi 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@xxxxxxxxxx>
Reviewed-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Acked-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung.kim@xxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1389839478-5887-12-git-send-email-namhyung@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
tools/lib/traceevent/plugin_scsi.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/tools/lib/traceevent/plugin_scsi.c b/tools/lib/traceevent/plugin_scsi.c
index 7ef16cc..eda326f 100644
--- a/tools/lib/traceevent/plugin_scsi.c
+++ b/tools/lib/traceevent/plugin_scsi.c
@@ -421,3 +421,9 @@ int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
return 0;
+void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
+ pevent_unregister_print_function(pevent, process_scsi_trace_parse_cdb,
+ "scsi_trace_parse_cdb");
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