21 static void tracing_start_function_trace(struct trace_array *tr);
22 static void tracing_stop_function_trace(struct trace_array *tr);
36 static int allocate_ftrace_ops(struct trace_array *tr)  in allocate_ftrace_ops()  argument
48 	tr->ops = ops;  in allocate_ftrace_ops()
49 	ops->private = tr;  in allocate_ftrace_ops()
54 int ftrace_create_function_files(struct trace_array *tr,  in ftrace_create_function_files()  argument
63 	if (tr->flags & TRACE_ARRAY_FL_GLOBAL)  in ftrace_create_function_files()
66 	ret = allocate_ftrace_ops(tr);  in ftrace_create_function_files()
70 	ftrace_create_filter_files(tr->ops, parent);  in ftrace_create_function_files()
75 void ftrace_destroy_function_files(struct trace_array *tr)  in ftrace_destroy_function_files()  argument
77 	ftrace_destroy_filter_files(tr->ops);  in ftrace_destroy_function_files()
78 	kfree(tr->ops);  in ftrace_destroy_function_files()
79 	tr->ops = NULL;  in ftrace_destroy_function_files()
82 static int function_trace_init(struct trace_array *tr)  in function_trace_init()  argument
91 	if (!tr->ops)  in function_trace_init()
95 	if (tr->flags & TRACE_ARRAY_FL_GLOBAL &&  in function_trace_init()
101 	ftrace_init_array_ops(tr, func);  in function_trace_init()
103 	tr->trace_buffer.cpu = get_cpu();  in function_trace_init()
107 	tracing_start_function_trace(tr);  in function_trace_init()
111 static void function_trace_reset(struct trace_array *tr)  in function_trace_reset()  argument
113 	tracing_stop_function_trace(tr);  in function_trace_reset()
115 	ftrace_reset_array_ops(tr);  in function_trace_reset()
118 static void function_trace_start(struct trace_array *tr)  in function_trace_start()  argument
120 	tracing_reset_online_cpus(&tr->trace_buffer);  in function_trace_start()
127 	struct trace_array *tr = op->private;  in function_trace_call()  local
134 	if (unlikely(!tr->function_enabled))  in function_trace_call()
145 	data = per_cpu_ptr(tr->trace_buffer.data, cpu);  in function_trace_call()
148 		trace_function(tr, ip, parent_ip, flags, pc);  in function_trace_call()
160 	struct trace_array *tr = op->private;  in function_stack_trace_call()  local
167 	if (unlikely(!tr->function_enabled))  in function_stack_trace_call()
176 	data = per_cpu_ptr(tr->trace_buffer.data, cpu);  in function_stack_trace_call()
181 		trace_function(tr, ip, parent_ip, flags, pc);  in function_stack_trace_call()
190 		__trace_stack(tr, flags, 5, pc);  in function_stack_trace_call()
209 static void tracing_start_function_trace(struct trace_array *tr)  in tracing_start_function_trace()  argument
211 	tr->function_enabled = 0;  in tracing_start_function_trace()
212 	register_ftrace_function(tr->ops);  in tracing_start_function_trace()
213 	tr->function_enabled = 1;  in tracing_start_function_trace()
216 static void tracing_stop_function_trace(struct trace_array *tr)  in tracing_stop_function_trace()  argument
218 	tr->function_enabled = 0;  in tracing_stop_function_trace()
219 	unregister_ftrace_function(tr->ops);  in tracing_stop_function_trace()
223 func_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)  in func_set_flag()  argument
231 		unregister_ftrace_function(tr->ops);  in func_set_flag()
234 			tr->ops->func = function_stack_trace_call;  in func_set_flag()
235 			register_ftrace_function(tr->ops);  in func_set_flag()
237 			tr->ops->func = function_trace_call;  in func_set_flag()
238 			register_ftrace_function(tr->ops);  in func_set_flag()