22 static void tracing_start_function_trace(struct trace_array *tr);
23 static void tracing_stop_function_trace(struct trace_array *tr);
37 static int allocate_ftrace_ops(struct trace_array *tr)  in allocate_ftrace_ops()  argument
49 	tr->ops = ops;  in allocate_ftrace_ops()
50 	ops->private = tr;  in allocate_ftrace_ops()
55 int ftrace_create_function_files(struct trace_array *tr,  in ftrace_create_function_files()  argument
64 	if (tr->flags & TRACE_ARRAY_FL_GLOBAL)  in ftrace_create_function_files()
67 	ret = allocate_ftrace_ops(tr);  in ftrace_create_function_files()
71 	ftrace_create_filter_files(tr->ops, parent);  in ftrace_create_function_files()
76 void ftrace_destroy_function_files(struct trace_array *tr)  in ftrace_destroy_function_files()  argument
78 	ftrace_destroy_filter_files(tr->ops);  in ftrace_destroy_function_files()
79 	kfree(tr->ops);  in ftrace_destroy_function_files()
80 	tr->ops = NULL;  in ftrace_destroy_function_files()
83 static int function_trace_init(struct trace_array *tr)  in function_trace_init()  argument
92 	if (!tr->ops)  in function_trace_init()
96 	if (tr->flags & TRACE_ARRAY_FL_GLOBAL &&  in function_trace_init()
102 	ftrace_init_array_ops(tr, func);  in function_trace_init()
104 	tr->trace_buffer.cpu = get_cpu();  in function_trace_init()
108 	tracing_start_function_trace(tr);  in function_trace_init()
112 static void function_trace_reset(struct trace_array *tr)  in function_trace_reset()  argument
114 	tracing_stop_function_trace(tr);  in function_trace_reset()
116 	ftrace_reset_array_ops(tr);  in function_trace_reset()
119 static void function_trace_start(struct trace_array *tr)  in function_trace_start()  argument
121 	tracing_reset_online_cpus(&tr->trace_buffer);  in function_trace_start()
128 	struct trace_array *tr = op->private;  in function_trace_call()  local
135 	if (unlikely(!tr->function_enabled))  in function_trace_call()
146 	data = per_cpu_ptr(tr->trace_buffer.data, cpu);  in function_trace_call()
149 		trace_function(tr, ip, parent_ip, flags, pc);  in function_trace_call()
179 	struct trace_array *tr = op->private;  in function_stack_trace_call()  local
186 	if (unlikely(!tr->function_enabled))  in function_stack_trace_call()
195 	data = per_cpu_ptr(tr->trace_buffer.data, cpu);  in function_stack_trace_call()
200 		trace_function(tr, ip, parent_ip, flags, pc);  in function_stack_trace_call()
201 		__trace_stack(tr, flags, STACK_SKIP, pc);  in function_stack_trace_call()
220 static void tracing_start_function_trace(struct trace_array *tr)  in tracing_start_function_trace()  argument
222 	tr->function_enabled = 0;  in tracing_start_function_trace()
223 	register_ftrace_function(tr->ops);  in tracing_start_function_trace()
224 	tr->function_enabled = 1;  in tracing_start_function_trace()
227 static void tracing_stop_function_trace(struct trace_array *tr)  in tracing_stop_function_trace()  argument
229 	tr->function_enabled = 0;  in tracing_stop_function_trace()
230 	unregister_ftrace_function(tr->ops);  in tracing_stop_function_trace()
236 func_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)  in func_set_flag()  argument
245 		if (tr->current_trace != &function_trace)  in func_set_flag()
248 		unregister_ftrace_function(tr->ops);  in func_set_flag()
251 			tr->ops->func = function_stack_trace_call;  in func_set_flag()
252 			register_ftrace_function(tr->ops);  in func_set_flag()
254 			tr->ops->func = function_trace_call;  in func_set_flag()
255 			register_ftrace_function(tr->ops);  in func_set_flag()
283 				 struct trace_array *tr, bool on,  in update_traceon_count()  argument
328 	if (on == !!tracer_tracing_is_on(tr))  in update_traceon_count()
332 		tracer_tracing_on(tr);  in update_traceon_count()
334 		tracer_tracing_off(tr);  in update_traceon_count()
344 		     struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_traceon_count()  argument
347 	update_traceon_count(ops, ip, tr, 1, data);  in ftrace_traceon_count()
352 		      struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_traceoff_count()  argument
355 	update_traceon_count(ops, ip, tr, 0, data);  in ftrace_traceoff_count()
360 	       struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_traceon()  argument
363 	if (tracer_tracing_is_on(tr))  in ftrace_traceon()
366 	tracer_tracing_on(tr);  in ftrace_traceon()
371 		struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_traceoff()  argument
374 	if (!tracer_tracing_is_on(tr))  in ftrace_traceoff()
377 	tracer_tracing_off(tr);  in ftrace_traceoff()
402 static __always_inline void trace_stack(struct trace_array *tr)  in trace_stack()  argument
410 	__trace_stack(tr, flags, FTRACE_STACK_SKIP, pc);  in trace_stack()
415 		  struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_stacktrace()  argument
418 	trace_stack(tr);  in ftrace_stacktrace()
423 			struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_stacktrace_count()  argument
436 		trace_stack(tr);  in ftrace_stacktrace_count()
455 			trace_stack(tr);  in ftrace_stacktrace_count()
483 		  struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_dump_probe()  argument
493 		     struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_cpudump_probe()  argument
559 ftrace_count_init(struct ftrace_probe_ops *ops, struct trace_array *tr,  in ftrace_count_init()  argument
575 ftrace_count_free(struct ftrace_probe_ops *ops, struct trace_array *tr,  in ftrace_count_free()  argument
637 ftrace_trace_probe_callback(struct trace_array *tr,  in ftrace_trace_probe_callback()  argument
651 		return unregister_ftrace_function_probe_func(glob+1, tr, ops);  in ftrace_trace_probe_callback()
670 	ret = register_ftrace_function_probe(glob, tr, ops, count);  in ftrace_trace_probe_callback()
676 ftrace_trace_onoff_callback(struct trace_array *tr, struct ftrace_hash *hash,  in ftrace_trace_onoff_callback()  argument
681 	if (!tr)  in ftrace_trace_onoff_callback()
690 	return ftrace_trace_probe_callback(tr, ops, hash, glob, cmd,  in ftrace_trace_onoff_callback()
695 ftrace_stacktrace_callback(struct trace_array *tr, struct ftrace_hash *hash,  in ftrace_stacktrace_callback()  argument
700 	if (!tr)  in ftrace_stacktrace_callback()
705 	return ftrace_trace_probe_callback(tr, ops, hash, glob, cmd,  in ftrace_stacktrace_callback()
710 ftrace_dump_callback(struct trace_array *tr, struct ftrace_hash *hash,  in ftrace_dump_callback()  argument
715 	if (!tr)  in ftrace_dump_callback()
721 	return ftrace_trace_probe_callback(tr, ops, hash, glob, cmd,  in ftrace_dump_callback()
726 ftrace_cpudump_callback(struct trace_array *tr, struct ftrace_hash *hash,  in ftrace_cpudump_callback()  argument
731 	if (!tr)  in ftrace_cpudump_callback()
737 	return ftrace_trace_probe_callback(tr, ops, hash, glob, cmd,  in ftrace_cpudump_callback()