22 static void tracing_start_function_trace(struct trace_array *tr);
23 static void tracing_stop_function_trace(struct trace_array *tr);
56 int ftrace_allocate_ftrace_ops(struct trace_array *tr)  in ftrace_allocate_ftrace_ops()  argument
61 	if (tr->flags & TRACE_ARRAY_FL_GLOBAL)  in ftrace_allocate_ftrace_ops()
72 	tr->ops = ops;  in ftrace_allocate_ftrace_ops()
73 	ops->private = tr;  in ftrace_allocate_ftrace_ops()
78 void ftrace_free_ftrace_ops(struct trace_array *tr)  in ftrace_free_ftrace_ops()  argument
80 	kfree(tr->ops);  in ftrace_free_ftrace_ops()
81 	tr->ops = NULL;  in ftrace_free_ftrace_ops()
84 int ftrace_create_function_files(struct trace_array *tr,  in ftrace_create_function_files()  argument
92 	if (tr->flags & TRACE_ARRAY_FL_GLOBAL)  in ftrace_create_function_files()
95 	if (!tr->ops)  in ftrace_create_function_files()
98 	ret = allocate_fgraph_ops(tr, tr->ops);  in ftrace_create_function_files()
100 		kfree(tr->ops);  in ftrace_create_function_files()
104 	ftrace_create_filter_files(tr->ops, parent);  in ftrace_create_function_files()
109 void ftrace_destroy_function_files(struct trace_array *tr)  in ftrace_destroy_function_files()  argument
111 	ftrace_destroy_filter_files(tr->ops);  in ftrace_destroy_function_files()
112 	ftrace_free_ftrace_ops(tr);  in ftrace_destroy_function_files()
113 	free_fgraph_ops(tr);  in ftrace_destroy_function_files()
134 static bool handle_func_repeats(struct trace_array *tr, u32 flags_val)  in handle_func_repeats()  argument
136 	if (!tr->last_func_repeats &&  in handle_func_repeats()
138 		tr->last_func_repeats = alloc_percpu(struct trace_func_repeats);  in handle_func_repeats()
139 		if (!tr->last_func_repeats)  in handle_func_repeats()
146 static int function_trace_init(struct trace_array *tr)  in function_trace_init()  argument
154 	if (!tr->ops)  in function_trace_init()
161 	if (!handle_func_repeats(tr, func_flags.val))  in function_trace_init()
164 	ftrace_init_array_ops(tr, func);  in function_trace_init()
166 	tr->array_buffer.cpu = raw_smp_processor_id();  in function_trace_init()
169 	tracing_start_function_trace(tr);  in function_trace_init()
173 static void function_trace_reset(struct trace_array *tr)  in function_trace_reset()  argument
175 	tracing_stop_function_trace(tr);  in function_trace_reset()
177 	ftrace_reset_array_ops(tr);  in function_trace_reset()
180 static void function_trace_start(struct trace_array *tr)  in function_trace_start()  argument
182 	tracing_reset_online_cpus(&tr->array_buffer);  in function_trace_start()
211 	struct trace_array *tr = op->private;  in function_trace_call()  local
215 	if (unlikely(!tr->function_enabled))  in function_trace_call()
226 	trace_function(tr, ip, parent_ip, trace_ctx, NULL);  in function_trace_call()
235 	struct trace_array *tr = op->private;  in function_args_trace_call()  local
239 	if (unlikely(!tr->function_enabled))  in function_args_trace_call()
248 	trace_function(tr, ip, parent_ip, trace_ctx, fregs);  in function_args_trace_call()
275 	struct trace_array *tr = op->private;  in function_stack_trace_call()  local
283 	if (unlikely(!tr->function_enabled))  in function_stack_trace_call()
293 	data = per_cpu_ptr(tr->array_buffer.data, cpu);  in function_stack_trace_call()
298 		trace_function(tr, ip, parent_ip, trace_ctx, NULL);  in function_stack_trace_call()
303 		__trace_stack(tr, trace_ctx, skip);  in function_stack_trace_call()
310 static inline bool is_repeat_check(struct trace_array *tr,  in is_repeat_check()  argument
318 			ring_buffer_time_stamp(tr->array_buffer.buffer);  in is_repeat_check()
326 static inline void process_repeats(struct trace_array *tr,  in process_repeats()  argument
332 		trace_last_func_repeats(tr, last_info, trace_ctx);  in process_repeats()
346 	struct trace_array *tr = op->private;  in function_no_repeats_trace_call()  local
350 	if (unlikely(!tr->function_enabled))  in function_no_repeats_trace_call()
358 	if (!tracer_tracing_is_on(tr))  in function_no_repeats_trace_call()
368 	last_info = this_cpu_ptr(tr->last_func_repeats);  in function_no_repeats_trace_call()
369 	if (is_repeat_check(tr, last_info, ip, parent_ip))  in function_no_repeats_trace_call()
373 	process_repeats(tr, ip, parent_ip, last_info, trace_ctx);  in function_no_repeats_trace_call()
375 	trace_function(tr, ip, parent_ip, trace_ctx, NULL);  in function_no_repeats_trace_call()
387 	struct trace_array *tr = op->private;  in function_stack_no_repeats_trace_call()  local
394 	if (unlikely(!tr->function_enabled))  in function_stack_no_repeats_trace_call()
404 	data = per_cpu_ptr(tr->array_buffer.data, cpu);  in function_stack_no_repeats_trace_call()
408 		last_info = per_cpu_ptr(tr->last_func_repeats, cpu);  in function_stack_no_repeats_trace_call()
409 		if (is_repeat_check(tr, last_info, ip, parent_ip))  in function_stack_no_repeats_trace_call()
413 		process_repeats(tr, ip, parent_ip, last_info, trace_ctx);  in function_stack_no_repeats_trace_call()
415 		trace_function(tr, ip, parent_ip, trace_ctx, NULL);  in function_stack_no_repeats_trace_call()
416 		__trace_stack(tr, trace_ctx, STACK_SKIP);  in function_stack_no_repeats_trace_call()
440 static void tracing_start_function_trace(struct trace_array *tr)  in tracing_start_function_trace()  argument
442 	tr->function_enabled = 0;  in tracing_start_function_trace()
443 	register_ftrace_function(tr->ops);  in tracing_start_function_trace()
444 	tr->function_enabled = 1;  in tracing_start_function_trace()
447 static void tracing_stop_function_trace(struct trace_array *tr)  in tracing_stop_function_trace()  argument
449 	tr->function_enabled = 0;  in tracing_stop_function_trace()
450 	unregister_ftrace_function(tr->ops);  in tracing_stop_function_trace()
456 func_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)  in func_set_flag()  argument
466 	if (tr->current_trace != &function_trace)  in func_set_flag()
475 	if (tr->ops->func == func)  in func_set_flag()
478 	if (!handle_func_repeats(tr, new_flags))  in func_set_flag()
481 	unregister_ftrace_function(tr->ops);  in func_set_flag()
482 	tr->ops->func = func;  in func_set_flag()
483 	register_ftrace_function(tr->ops);  in func_set_flag()
505 				 struct trace_array *tr, bool on,  in update_traceon_count()  argument
550 	if (on == !!tracer_tracing_is_on(tr))  in update_traceon_count()
554 		tracer_tracing_on(tr);  in update_traceon_count()
556 		tracer_tracing_off(tr);  in update_traceon_count()
566 		     struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_traceon_count()  argument
569 	update_traceon_count(ops, ip, tr, 1, data);  in ftrace_traceon_count()
574 		      struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_traceoff_count()  argument
577 	update_traceon_count(ops, ip, tr, 0, data);  in ftrace_traceoff_count()
582 	       struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_traceon()  argument
585 	if (tracer_tracing_is_on(tr))  in ftrace_traceon()
588 	tracer_tracing_on(tr);  in ftrace_traceon()
593 		struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_traceoff()  argument
596 	if (!tracer_tracing_is_on(tr))  in ftrace_traceoff()
599 	tracer_tracing_off(tr);  in ftrace_traceoff()
624 static __always_inline void trace_stack(struct trace_array *tr)  in trace_stack()  argument
626 	__trace_stack(tr, tracing_gen_ctx_dec(), FTRACE_STACK_SKIP);  in trace_stack()
631 		  struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_stacktrace()  argument
634 	trace_stack(tr);  in ftrace_stacktrace()
639 			struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_stacktrace_count()  argument
652 		trace_stack(tr);  in ftrace_stacktrace_count()
671 			trace_stack(tr);  in ftrace_stacktrace_count()
699 		  struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_dump_probe()  argument
709 		     struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_cpudump_probe()  argument
775 ftrace_count_init(struct ftrace_probe_ops *ops, struct trace_array *tr,  in ftrace_count_init()  argument
791 ftrace_count_free(struct ftrace_probe_ops *ops, struct trace_array *tr,  in ftrace_count_free()  argument
853 ftrace_trace_probe_callback(struct trace_array *tr,  in ftrace_trace_probe_callback()  argument
867 		return unregister_ftrace_function_probe_func(glob+1, tr, ops);  in ftrace_trace_probe_callback()
886 	ret = register_ftrace_function_probe(glob, tr, ops, count);  in ftrace_trace_probe_callback()
892 ftrace_trace_onoff_callback(struct trace_array *tr, struct ftrace_hash *hash,  in ftrace_trace_onoff_callback()  argument
897 	if (!tr)  in ftrace_trace_onoff_callback()
906 	return ftrace_trace_probe_callback(tr, ops, hash, glob, cmd,  in ftrace_trace_onoff_callback()
911 ftrace_stacktrace_callback(struct trace_array *tr, struct ftrace_hash *hash,  in ftrace_stacktrace_callback()  argument
916 	if (!tr)  in ftrace_stacktrace_callback()
921 	return ftrace_trace_probe_callback(tr, ops, hash, glob, cmd,  in ftrace_stacktrace_callback()
926 ftrace_dump_callback(struct trace_array *tr, struct ftrace_hash *hash,  in ftrace_dump_callback()  argument
931 	if (!tr)  in ftrace_dump_callback()
937 	return ftrace_trace_probe_callback(tr, ops, hash, glob, cmd,  in ftrace_dump_callback()
942 ftrace_cpudump_callback(struct trace_array *tr, struct ftrace_hash *hash,  in ftrace_cpudump_callback()  argument
947 	if (!tr)  in ftrace_cpudump_callback()
953 	return ftrace_trace_probe_callback(tr, ops, hash, glob, cmd,  in ftrace_cpudump_callback()