diff options
| -rw-r--r-- | kernel/trace/trace.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 6b8bd8800d04..df840f42be39 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -216,8 +216,6 @@ void trace_function(struct trace_array *tr, unsigned long parent_ip, unsigned long flags); -void tracing_start_function_trace(void); -void tracing_stop_function_trace(void); void tracing_start_cmdline_record(void); void tracing_stop_cmdline_record(void); int register_tracer(struct tracer *type); @@ -234,6 +232,14 @@ void update_max_tr_single(struct trace_array *tr, extern cycle_t ftrace_now(int cpu); +#ifdef CONFIG_FTRACE +void tracing_start_function_trace(void); +void tracing_stop_function_trace(void); +#else +# define tracing_start_function_trace() do { } while (0) +# define tracing_stop_function_trace() do { } while (0) +#endif + #ifdef CONFIG_CONTEXT_SWITCH_TRACER typedef void (*tracer_switch_func_t)(void *private, |