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method is out of date.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, 10 deletions

diff --git a/kernel/trace/trace_sysprof.c b/kernel/trace/trace_sysprof.c
index 9587d3bcba55..8097430edff9 100644
--- a/kernel/trace/trace_sysprof.c
+++ b/kernel/trace/trace_sysprof.c
@@ -275,21 +275,11 @@ static void stack_trace_reset(struct trace_array *tr)
                 stop_stack_trace(tr);
 }
 
-static void stack_trace_ctrl_update(struct trace_array *tr)
-{
-        /* When starting a new trace, reset the buffers */
-        if (tr->ctrl)
-                start_stack_trace(tr);
-        else
-                stop_stack_trace(tr);
-}
-
 static struct tracer stack_trace __read_mostly =
 {
         .name           = "sysprof",
         .init           = stack_trace_init,
         .reset          = stack_trace_reset,
-        .ctrl_update    = stack_trace_ctrl_update,
 #ifdef CONFIG_FTRACE_SELFTEST
         .selftest    = trace_selftest_startup_sysprof,
 #endif