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Commit 2504ea5e authored by Mathieu Desnoyers's avatar Mathieu Desnoyers Committed by Ingo Molnar
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tracepoints: samples, fix teardown 



Impact: fix a bug in sample tracepoints

Need a tracepoint_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: default avatarMathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent a0bca6a5

samples/tracepoints/tracepoint-probe-sample.c

+1 −0
Original line number Diff line number Diff line
@@ -46,6 +46,7 @@ void __exit tp_sample_trace_exit(void) 
{

	unregister_trace_subsys_eventb(probe_subsys_eventb);

	unregister_trace_subsys_event(probe_subsys_event);

	tracepoint_synchronize_unregister();

}



module_exit(tp_sample_trace_exit);

samples/tracepoints/tracepoint-probe-sample2.c

+1 −0
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ module_init(tp_sample_trace_init); 
void __exit tp_sample_trace_exit(void)

{

	unregister_trace_subsys_event(probe_subsys_event);

	tracepoint_synchronize_unregister();

}



module_exit(tp_sample_trace_exit);