Commit-ID:  ac668c7b7d87c1895faf196a337b5ddfd32a0e21
Gitweb:     http://git.kernel.org/tip/ac668c7b7d87c1895faf196a337b5ddfd32a0e21
Author:     Namhyung Kim <[email protected]>
AuthorDate: Thu, 16 Jan 2014 11:31:09 +0900
Committer:  Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Thu, 16 Jan 2014 16:26:24 -0300

tools lib traceevent: Unregister handler when function 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 <[email protected]>
Reviewed-by: Jiri Olsa <[email protected]>
Acked-by: Steven Rostedt <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Steven Rostedt <[email protected]>
Link: 
http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
 tools/lib/traceevent/plugin_function.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/lib/traceevent/plugin_function.c 
b/tools/lib/traceevent/plugin_function.c
index 3946148..80ba4ff 100644
--- a/tools/lib/traceevent/plugin_function.c
+++ b/tools/lib/traceevent/plugin_function.c
@@ -148,6 +148,9 @@ void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
 {
        int i, x;
 
+       pevent_unregister_event_handler(pevent, -1, "ftrace", "function",
+                                       function_handler, NULL);
+
        for (i = 0; i <= cpus; i++) {
                for (x = 0; x < fstack[i].size && fstack[i].stack[x]; x++)
                        free(fstack[i].stack[x]);
--
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