ftrace: remove ctrl_update method

Impact: Remove the ctrl_update tracer method

With the new quick start/stop method of tracing, the ctrl_update
method is out of date.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 9 deletions

diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c
index 9f1b0de71284..e980b872bef5 100644
--- a/kernel/trace/trace_functions.c
+++ b/kernel/trace/trace_functions.c
@@ -54,14 +54,6 @@ static void function_trace_reset(struct trace_array *tr)
                 stop_function_trace(tr);
 }
 
-static void function_trace_ctrl_update(struct trace_array *tr)
-{
-        if (tr->ctrl)
-                start_function_trace(tr);
-        else
-                stop_function_trace(tr);
-}
-
 static void function_trace_start(struct trace_array *tr)
 {
         function_reset(tr);
@@ -73,7 +65,6 @@ static struct tracer function_trace __read_mostly =
         .init        = function_trace_init,
         .reset       = function_trace_reset,
         .start       = function_trace_start,
-        .ctrl_update = function_trace_ctrl_update,
 #ifdef CONFIG_FTRACE_SELFTEST
         .selftest    = trace_selftest_startup_function,
 #endif