markers: probe example, fix teardown

Need a marker_synchronize_unregister() before the end of exit() to make sure
every probe callers have exited the non preemptible section and thus are not
executing the probe code anymore.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/samples/markers/probe-example.c b/samples/markers/probe-example.c
index c8e099d4d1fdd7d5cec4a7148d259ee6281878cc..2dfb3b32937e03e7621c30212bdc12880f4c7467 100644 (file)
--- a/samples/markers/probe-example.c
+++ b/samples/markers/probe-example.c
@@ -81,6 +81,7 @@ static void __exit probe_fini(void)
                        probe_array[i].probe_func, &probe_array[i]);
        printk(KERN_INFO "Number of event b : %u\n",
                        atomic_read(&eventb_count));
+       marker_synchronize_unregister();
 }
 
 module_init(probe_init);