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>

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>
Mathieu Desnoyers · Ingo Molnar
1 parent e2d3b75dbc
Showing 1 changed file with 1 additions and 0 deletions Side-by-side Diff
samples/markers/probe-example.c
@@ -81,6 +81,7 @@
 			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);
...	...	@@ -81,6 +81,7 @@
81	81	probe_array[i].probe_func, &probe_array[i]);
82	82	printk(KERN_INFO "Number of event b : %u\n",
83	83	atomic_read(&eventb_count));
	84	+ marker_synchronize_unregister();
84	85	}
85	86
86	87	module_init(probe_init);