[PATCH] tracing: let user specify tracing_thresh after selecting function_graph

[Stanislav Fomichev]

Currently, tracing_thresh works only if we specify it before selecting
function_graph tracer. If we do the opposite, tracing_thresh will change
it's value, but it will not be applied.
To fix it, we need to always register handlers which take tracing_thresh into
account.

Signed-off-by: Stanislav Fomichev <stfomichev@xxxxxxxxxxxxxx>
---
 kernel/trace/trace_functions_graph.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index deff11200261..a894031986a3 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -433,12 +433,8 @@ static int graph_trace_init(struct trace_array *tr)
 	int ret;
 
 	set_graph_array(tr);
-	if (tracing_thresh)
-		ret = register_ftrace_graph(&trace_graph_thresh_return,
-					    &trace_graph_thresh_entry);
-	else
-		ret = register_ftrace_graph(&trace_graph_return,
-					    &trace_graph_entry);
+	ret = register_ftrace_graph(&trace_graph_thresh_return,
+				    &trace_graph_thresh_entry);
 	if (ret)
 		return ret;
 	tracing_start_cmdline_record();
-- 
1.8.3.2

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