1 files changed, 2 insertions, 32 deletions

diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
index 62a78d943534..ed344b022a14 100644
--- a/kernel/trace/trace_irqsoff.c
+++ b/kernel/trace/trace_irqsoff.c
@@ -353,28 +353,18 @@ void trace_preempt_off(unsigned long a0, unsigned long a1)
 }
 #endif /* CONFIG_PREEMPT_TRACER */
 
-/*
- * save_tracer_enabled is used to save the state of the tracer_enabled
- * variable when we disable it when we open a trace output file.
- */
-static int save_tracer_enabled;
-
 static void start_irqsoff_tracer(struct trace_array *tr)
 {
         register_ftrace_function(&trace_ops);
-        if (tracing_is_enabled()) {
+        if (tracing_is_enabled())
                 tracer_enabled = 1;
-                save_tracer_enabled = 1;
-        } else {
+        else
                 tracer_enabled = 0;
-                save_tracer_enabled = 0;
-        }
 }
 
 static void stop_irqsoff_tracer(struct trace_array *tr)
 {
         tracer_enabled = 0;
-        save_tracer_enabled = 0;
         unregister_ftrace_function(&trace_ops);
 }
 
@@ -395,25 +385,11 @@ static void irqsoff_tracer_reset(struct trace_array *tr)
 static void irqsoff_tracer_start(struct trace_array *tr)
 {
         tracer_enabled = 1;
-        save_tracer_enabled = 1;
 }
 
 static void irqsoff_tracer_stop(struct trace_array *tr)
 {
         tracer_enabled = 0;
-        save_tracer_enabled = 0;
-}
-
-static void irqsoff_tracer_open(struct trace_iterator *iter)
-{
-        /* stop the trace while dumping */
-        tracer_enabled = 0;
-}
-
-static void irqsoff_tracer_close(struct trace_iterator *iter)
-{
-        /* restart tracing */
-        tracer_enabled = save_tracer_enabled;
 }
 
 #ifdef CONFIG_IRQSOFF_TRACER
@@ -431,8 +407,6 @@ static struct tracer irqsoff_tracer __read_mostly =
         .reset          = irqsoff_tracer_reset,
         .start          = irqsoff_tracer_start,
         .stop           = irqsoff_tracer_stop,
-        .open           = irqsoff_tracer_open,
-        .close          = irqsoff_tracer_close,
         .print_max      = 1,
 #ifdef CONFIG_FTRACE_SELFTEST
         .selftest    = trace_selftest_startup_irqsoff,
@@ -459,8 +433,6 @@ static struct tracer preemptoff_tracer __read_mostly =
         .reset          = irqsoff_tracer_reset,
         .start          = irqsoff_tracer_start,
         .stop           = irqsoff_tracer_stop,
-        .open           = irqsoff_tracer_open,
-        .close          = irqsoff_tracer_close,
         .print_max      = 1,
 #ifdef CONFIG_FTRACE_SELFTEST
         .selftest    = trace_selftest_startup_preemptoff,
@@ -489,8 +461,6 @@ static struct tracer preemptirqsoff_tracer __read_mostly =
         .reset          = irqsoff_tracer_reset,
         .start          = irqsoff_tracer_start,
         .stop           = irqsoff_tracer_stop,
-        .open           = irqsoff_tracer_open,
-        .close          = irqsoff_tracer_close,
         .print_max      = 1,
 #ifdef CONFIG_FTRACE_SELFTEST
         .selftest    = trace_selftest_startup_preemptirqsoff,