22 static void tracing_start_function_trace(struct trace_array *tr);
23 static void tracing_stop_function_trace(struct trace_array *tr);
52 int ftrace_allocate_ftrace_ops(struct trace_array *tr)  in ftrace_allocate_ftrace_ops()  argument
57 	if (tr->flags & TRACE_ARRAY_FL_GLOBAL)  in ftrace_allocate_ftrace_ops()
68 	tr->ops = ops;  in ftrace_allocate_ftrace_ops()
69 	ops->private = tr;  in ftrace_allocate_ftrace_ops()
74 void ftrace_free_ftrace_ops(struct trace_array *tr)  in ftrace_free_ftrace_ops()  argument
76 	kfree(tr->ops);  in ftrace_free_ftrace_ops()
77 	tr->ops = NULL;  in ftrace_free_ftrace_ops()
80 int ftrace_create_function_files(struct trace_array *tr,  in ftrace_create_function_files()  argument
88 	if (tr->flags & TRACE_ARRAY_FL_GLOBAL)  in ftrace_create_function_files()
91 	if (!tr->ops)  in ftrace_create_function_files()
94 	ret = allocate_fgraph_ops(tr, tr->ops);  in ftrace_create_function_files()
96 		kfree(tr->ops);  in ftrace_create_function_files()
100 	ftrace_create_filter_files(tr->ops, parent);  in ftrace_create_function_files()
105 void ftrace_destroy_function_files(struct trace_array *tr)  in ftrace_destroy_function_files()  argument
107 	ftrace_destroy_filter_files(tr->ops);  in ftrace_destroy_function_files()
108 	ftrace_free_ftrace_ops(tr);  in ftrace_destroy_function_files()
109 	free_fgraph_ops(tr);  in ftrace_destroy_function_files()
128 static bool handle_func_repeats(struct trace_array *tr, u32 flags_val)  in handle_func_repeats()  argument
130 	if (!tr->last_func_repeats &&  in handle_func_repeats()
132 		tr->last_func_repeats = alloc_percpu(struct trace_func_repeats);  in handle_func_repeats()
133 		if (!tr->last_func_repeats)  in handle_func_repeats()
140 static int function_trace_init(struct trace_array *tr)  in function_trace_init()  argument
148 	if (!tr->ops)  in function_trace_init()
155 	if (!handle_func_repeats(tr, func_flags.val))  in function_trace_init()
158 	ftrace_init_array_ops(tr, func);  in function_trace_init()
160 	tr->array_buffer.cpu = raw_smp_processor_id();  in function_trace_init()
163 	tracing_start_function_trace(tr);  in function_trace_init()
167 static void function_trace_reset(struct trace_array *tr)  in function_trace_reset()  argument
169 	tracing_stop_function_trace(tr);  in function_trace_reset()
171 	ftrace_reset_array_ops(tr);  in function_trace_reset()
174 static void function_trace_start(struct trace_array *tr)  in function_trace_start()  argument
176 	tracing_reset_online_cpus(&tr->array_buffer);  in function_trace_start()
183 	struct trace_array *tr = op->private;  in function_trace_call()  local
189 	if (unlikely(!tr->function_enabled))  in function_trace_call()
199 	data = per_cpu_ptr(tr->array_buffer.data, cpu);  in function_trace_call()
201 		trace_function(tr, ip, parent_ip, trace_ctx);  in function_trace_call()
228 	struct trace_array *tr = op->private;  in function_stack_trace_call()  local
236 	if (unlikely(!tr->function_enabled))  in function_stack_trace_call()
245 	data = per_cpu_ptr(tr->array_buffer.data, cpu);  in function_stack_trace_call()
250 		trace_function(tr, ip, parent_ip, trace_ctx);  in function_stack_trace_call()
255 		__trace_stack(tr, trace_ctx, skip);  in function_stack_trace_call()
262 static inline bool is_repeat_check(struct trace_array *tr,  in is_repeat_check()  argument
270 			ring_buffer_time_stamp(tr->array_buffer.buffer);  in is_repeat_check()
278 static inline void process_repeats(struct trace_array *tr,  in process_repeats()  argument
284 		trace_last_func_repeats(tr, last_info, trace_ctx);  in process_repeats()
298 	struct trace_array *tr = op->private;  in function_no_repeats_trace_call()  local
305 	if (unlikely(!tr->function_enabled))  in function_no_repeats_trace_call()
313 	data = per_cpu_ptr(tr->array_buffer.data, cpu);  in function_no_repeats_trace_call()
324 	last_info = per_cpu_ptr(tr->last_func_repeats, cpu);  in function_no_repeats_trace_call()
325 	if (is_repeat_check(tr, last_info, ip, parent_ip))  in function_no_repeats_trace_call()
330 	process_repeats(tr, ip, parent_ip, last_info, trace_ctx);  in function_no_repeats_trace_call()
332 	trace_function(tr, ip, parent_ip, trace_ctx);  in function_no_repeats_trace_call()
344 	struct trace_array *tr = op->private;  in function_stack_no_repeats_trace_call()  local
351 	if (unlikely(!tr->function_enabled))  in function_stack_no_repeats_trace_call()
360 	data = per_cpu_ptr(tr->array_buffer.data, cpu);  in function_stack_no_repeats_trace_call()
364 		last_info = per_cpu_ptr(tr->last_func_repeats, cpu);  in function_stack_no_repeats_trace_call()
365 		if (is_repeat_check(tr, last_info, ip, parent_ip))  in function_stack_no_repeats_trace_call()
369 		process_repeats(tr, ip, parent_ip, last_info, trace_ctx);  in function_stack_no_repeats_trace_call()
371 		trace_function(tr, ip, parent_ip, trace_ctx);  in function_stack_no_repeats_trace_call()
372 		__trace_stack(tr, trace_ctx, STACK_SKIP);  in function_stack_no_repeats_trace_call()
393 static void tracing_start_function_trace(struct trace_array *tr)  in tracing_start_function_trace()  argument
395 	tr->function_enabled = 0;  in tracing_start_function_trace()
396 	register_ftrace_function(tr->ops);  in tracing_start_function_trace()
397 	tr->function_enabled = 1;  in tracing_start_function_trace()
400 static void tracing_stop_function_trace(struct trace_array *tr)  in tracing_stop_function_trace()  argument
402 	tr->function_enabled = 0;  in tracing_stop_function_trace()
403 	unregister_ftrace_function(tr->ops);  in tracing_stop_function_trace()
409 func_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)  in func_set_flag()  argument
419 	if (tr->current_trace != &function_trace)  in func_set_flag()
428 	if (tr->ops->func == func)  in func_set_flag()
431 	if (!handle_func_repeats(tr, new_flags))  in func_set_flag()
434 	unregister_ftrace_function(tr->ops);  in func_set_flag()
435 	tr->ops->func = func;  in func_set_flag()
436 	register_ftrace_function(tr->ops);  in func_set_flag()
458 				 struct trace_array *tr, bool on,  in update_traceon_count()  argument
503 	if (on == !!tracer_tracing_is_on(tr))  in update_traceon_count()
507 		tracer_tracing_on(tr);  in update_traceon_count()
509 		tracer_tracing_off(tr);  in update_traceon_count()
519 		     struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_traceon_count()  argument
522 	update_traceon_count(ops, ip, tr, 1, data);  in ftrace_traceon_count()
527 		      struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_traceoff_count()  argument
530 	update_traceon_count(ops, ip, tr, 0, data);  in ftrace_traceoff_count()
535 	       struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_traceon()  argument
538 	if (tracer_tracing_is_on(tr))  in ftrace_traceon()
541 	tracer_tracing_on(tr);  in ftrace_traceon()
546 		struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_traceoff()  argument
549 	if (!tracer_tracing_is_on(tr))  in ftrace_traceoff()
552 	tracer_tracing_off(tr);  in ftrace_traceoff()
577 static __always_inline void trace_stack(struct trace_array *tr)  in trace_stack()  argument
583 	__trace_stack(tr, trace_ctx, FTRACE_STACK_SKIP);  in trace_stack()
588 		  struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_stacktrace()  argument
591 	trace_stack(tr);  in ftrace_stacktrace()
596 			struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_stacktrace_count()  argument
609 		trace_stack(tr);  in ftrace_stacktrace_count()
628 			trace_stack(tr);  in ftrace_stacktrace_count()
656 		  struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_dump_probe()  argument
666 		     struct trace_array *tr, struct ftrace_probe_ops *ops,  in ftrace_cpudump_probe()  argument
732 ftrace_count_init(struct ftrace_probe_ops *ops, struct trace_array *tr,  in ftrace_count_init()  argument
748 ftrace_count_free(struct ftrace_probe_ops *ops, struct trace_array *tr,  in ftrace_count_free()  argument
810 ftrace_trace_probe_callback(struct trace_array *tr,  in ftrace_trace_probe_callback()  argument
824 		return unregister_ftrace_function_probe_func(glob+1, tr, ops);  in ftrace_trace_probe_callback()
843 	ret = register_ftrace_function_probe(glob, tr, ops, count);  in ftrace_trace_probe_callback()
849 ftrace_trace_onoff_callback(struct trace_array *tr, struct ftrace_hash *hash,  in ftrace_trace_onoff_callback()  argument
854 	if (!tr)  in ftrace_trace_onoff_callback()
863 	return ftrace_trace_probe_callback(tr, ops, hash, glob, cmd,  in ftrace_trace_onoff_callback()
868 ftrace_stacktrace_callback(struct trace_array *tr, struct ftrace_hash *hash,  in ftrace_stacktrace_callback()  argument
873 	if (!tr)  in ftrace_stacktrace_callback()
878 	return ftrace_trace_probe_callback(tr, ops, hash, glob, cmd,  in ftrace_stacktrace_callback()
883 ftrace_dump_callback(struct trace_array *tr, struct ftrace_hash *hash,  in ftrace_dump_callback()  argument
888 	if (!tr)  in ftrace_dump_callback()
894 	return ftrace_trace_probe_callback(tr, ops, hash, glob, cmd,  in ftrace_dump_callback()
899 ftrace_cpudump_callback(struct trace_array *tr, struct ftrace_hash *hash,  in ftrace_cpudump_callback()  argument
904 	if (!tr)  in ftrace_cpudump_callback()
910 	return ftrace_trace_probe_callback(tr, ops, hash, glob, cmd,  in ftrace_cpudump_callback()