Commit b5db03c4 authored Feb 07, 2009 by Arnaldo Carvalho de Melo Committed by Ingo Molnar Feb 09, 2009

tracing: handle unregistering the current tracer



Impact: simplification

Instead of requiring that plugins have the sequence:

  my_tracer_stop(my_trace_array);
  unregister_tracer(my_tracer);

it should be possible just do a:

  unregister_tracer(my_tracer);

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 3861a17b

kernel/trace/trace.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -559,6 +559,15 @@ void unregister_tracer(struct tracer *type)

		found:
		t = (t)->next;

		if (type == current_trace && tracer_enabled) {
		tracer_enabled = 0;
		tracing_stop();
		if (current_trace->stop)
		current_trace->stop(&global_trace);
		current_trace = &nop_trace;
		}

		if (strlen(type->name) != max_tracer_type_len)
		goto out;