From c8dd0f45874547e6e77bab03d71feb16c4cb98a8 Mon Sep 17 00:00:00 2001
From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
Date: Fri, 23 Nov 2018 13:06:07 -0500
Subject: function_graph: Do not expose the graph_time option when profiler is
not configured
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>
---
kernel/trace/trace_functions_graph.c | 4 ++++
1 file changed, 4 insertions(+)
(limited to 'kernel/trace/trace_functions_graph.c')
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index eaf9b1629956..855c13c61e77 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -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 */
};
--
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