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function_graph: Do not expose the graph_time option when profiler is not configured

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When the function profiler is not configured, the "graph_time" option is
meaningless, as the function profiler is the only thing that makes use of
it. Do not expose it if the profiler is not configured.

Link: http://lkml.kernel.org/r/20181123061133.GA195223@google.com

Reported-by: Joel Fernandes <joel@joelfernandes.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (VMware)
2018-11-23 13:06:07 -05:00
parent 3306fc4aff
commit c8dd0f4587
2 changed files with 9 additions and 0 deletions
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4
kernel/trace/trace_functions_graph.c
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@@ -60,8 +60,12 @@ static struct tracer_opt trace_opts[] = {
{ TRACER_OPT(funcgraph-tail, TRACE_GRAPH_PRINT_TAIL) },
/* Include sleep time (scheduled out) between entry and return */
{ TRACER_OPT(sleep-time, TRACE_GRAPH_SLEEP_TIME) },
#ifdef CONFIG_FUNCTION_PROFILER
/* Include time within nested functions */
{ TRACER_OPT(graph-time, TRACE_GRAPH_GRAPH_TIME) },
#endif
{ } /* Empty entry */
};