39 static void stop_irqsoff_tracer(struct trace_array *tr, int graph);
40 static int start_irqsoff_tracer(struct trace_array *tr, int graph);
64 static int irqsoff_display_graph(struct trace_array *tr, int set);
65 # define is_graph(tr) ((tr)->trace_flags & TRACE_ITER_DISPLAY_GRAPH)  argument
67 static inline int irqsoff_display_graph(struct trace_array *tr, int set)  in irqsoff_display_graph()  argument
71 # define is_graph(tr) false  argument
98 static int func_prolog_dec(struct trace_array *tr,  in func_prolog_dec()  argument
124 	*data = per_cpu_ptr(tr->trace_buffer.data, cpu);  in func_prolog_dec()
142 	struct trace_array *tr = irqsoff_trace;  in irqsoff_tracer_call()  local
146 	if (!func_prolog_dec(tr, &data, &flags))  in irqsoff_tracer_call()
149 	trace_function(tr, ip, parent_ip, flags, preempt_count());  in irqsoff_tracer_call()
156 static int irqsoff_display_graph(struct trace_array *tr, int set)  in irqsoff_display_graph()  argument
160 	if (!(is_graph(tr) ^ set))  in irqsoff_display_graph()
168 	tr->max_latency = 0;  in irqsoff_display_graph()
176 	struct trace_array *tr = irqsoff_trace;  in irqsoff_graph_entry()  local
194 	if (!func_prolog_dec(tr, &data, &flags))  in irqsoff_graph_entry()
198 	ret = __trace_graph_entry(tr, trace, flags, pc);  in irqsoff_graph_entry()
206 	struct trace_array *tr = irqsoff_trace;  in irqsoff_graph_return()  local
211 	if (!func_prolog_dec(tr, &data, &flags))  in irqsoff_graph_return()
215 	__trace_graph_return(tr, trace, flags, pc);  in irqsoff_graph_return()
221 	if (is_graph(iter->tr))  in irqsoff_trace_open()
243 	if (is_graph(iter->tr))  in irqsoff_print_line()
251 	struct trace_array *tr = irqsoff_trace;  in irqsoff_print_header()  local
253 	if (is_graph(tr))  in irqsoff_print_header()
260 __trace_function(struct trace_array *tr,  in __trace_function()  argument
264 	if (is_graph(tr))  in __trace_function()
265 		trace_graph_function(tr, ip, parent_ip, flags, pc);  in __trace_function()
267 		trace_function(tr, ip, parent_ip, flags, pc);  in __trace_function()
305 static bool report_latency(struct trace_array *tr, u64 delta)  in report_latency()  argument
311 		if (delta <= tr->max_latency)  in report_latency()
318 check_critical_timing(struct trace_array *tr,  in check_critical_timing()  argument
335 	if (!report_latency(tr, delta))  in check_critical_timing()
341 	if (!report_latency(tr, delta))  in check_critical_timing()
344 	__trace_function(tr, CALLER_ADDR0, parent_ip, flags, pc);  in check_critical_timing()
346 	__trace_stack(tr, flags, 5, pc);  in check_critical_timing()
354 		tr->max_latency = delta;  in check_critical_timing()
355 		update_max_tr_single(tr, current, cpu);  in check_critical_timing()
366 	__trace_function(tr, CALLER_ADDR0, parent_ip, flags, pc);  in check_critical_timing()
373 	struct trace_array *tr = irqsoff_trace;  in start_critical_timing()  local
385 	data = per_cpu_ptr(tr->trace_buffer.data, cpu);  in start_critical_timing()
398 	__trace_function(tr, ip, parent_ip, flags, pc);  in start_critical_timing()
409 	struct trace_array *tr = irqsoff_trace;  in stop_critical_timing()  local
423 	data = per_cpu_ptr(tr->trace_buffer.data, cpu);  in stop_critical_timing()
432 	__trace_function(tr, ip, parent_ip, flags, pc);  in stop_critical_timing()
433 	check_critical_timing(tr, data, parent_ip ? : ip, cpu);  in stop_critical_timing()
460 static int register_irqsoff_function(struct trace_array *tr, int graph, int set)  in register_irqsoff_function()  argument
465 	if (function_enabled || (!set && !(tr->trace_flags & TRACE_ITER_FUNCTION)))  in register_irqsoff_function()
472 		ret = register_ftrace_function(tr->ops);  in register_irqsoff_function()
480 static void unregister_irqsoff_function(struct trace_array *tr, int graph)  in unregister_irqsoff_function()  argument
488 		unregister_ftrace_function(tr->ops);  in unregister_irqsoff_function()
493 static int irqsoff_function_set(struct trace_array *tr, u32 mask, int set)  in irqsoff_function_set()  argument
499 		register_irqsoff_function(tr, is_graph(tr), 1);  in irqsoff_function_set()
501 		unregister_irqsoff_function(tr, is_graph(tr));  in irqsoff_function_set()
505 static int register_irqsoff_function(struct trace_array *tr, int graph, int set)  in register_irqsoff_function()  argument
509 static void unregister_irqsoff_function(struct trace_array *tr, int graph) { }  in unregister_irqsoff_function()  argument
510 static inline int irqsoff_function_set(struct trace_array *tr, u32 mask, int set)  in irqsoff_function_set()  argument
516 static int irqsoff_flag_changed(struct trace_array *tr, u32 mask, int set)  in irqsoff_flag_changed()  argument
518 	struct tracer *tracer = tr->current_trace;  in irqsoff_flag_changed()
520 	if (irqsoff_function_set(tr, mask, set))  in irqsoff_flag_changed()
525 		return irqsoff_display_graph(tr, set);  in irqsoff_flag_changed()
531 static int start_irqsoff_tracer(struct trace_array *tr, int graph)  in start_irqsoff_tracer()  argument
535 	ret = register_irqsoff_function(tr, graph, 0);  in start_irqsoff_tracer()
545 static void stop_irqsoff_tracer(struct trace_array *tr, int graph)  in stop_irqsoff_tracer()  argument
549 	unregister_irqsoff_function(tr, graph);  in stop_irqsoff_tracer()
554 static int __irqsoff_tracer_init(struct trace_array *tr)  in __irqsoff_tracer_init()  argument
559 	save_flags = tr->trace_flags;  in __irqsoff_tracer_init()
562 	set_tracer_flag(tr, TRACE_ITER_OVERWRITE, 1);  in __irqsoff_tracer_init()
563 	set_tracer_flag(tr, TRACE_ITER_LATENCY_FMT, 1);  in __irqsoff_tracer_init()
565 	tr->max_latency = 0;  in __irqsoff_tracer_init()
566 	irqsoff_trace = tr;  in __irqsoff_tracer_init()
570 	ftrace_init_array_ops(tr, irqsoff_tracer_call);  in __irqsoff_tracer_init()
573 	if (start_irqsoff_tracer(tr, (tr->flags & TRACE_ARRAY_FL_GLOBAL &&  in __irqsoff_tracer_init()
574 				      is_graph(tr))))  in __irqsoff_tracer_init()
581 static void __irqsoff_tracer_reset(struct trace_array *tr)  in __irqsoff_tracer_reset()  argument
586 	stop_irqsoff_tracer(tr, is_graph(tr));  in __irqsoff_tracer_reset()
588 	set_tracer_flag(tr, TRACE_ITER_LATENCY_FMT, lat_flag);  in __irqsoff_tracer_reset()
589 	set_tracer_flag(tr, TRACE_ITER_OVERWRITE, overwrite_flag);  in __irqsoff_tracer_reset()
590 	ftrace_reset_array_ops(tr);  in __irqsoff_tracer_reset()
595 static void irqsoff_tracer_start(struct trace_array *tr)  in irqsoff_tracer_start()  argument
600 static void irqsoff_tracer_stop(struct trace_array *tr)  in irqsoff_tracer_stop()  argument
625 static int irqsoff_tracer_init(struct trace_array *tr)  in irqsoff_tracer_init()  argument
629 	return __irqsoff_tracer_init(tr);  in irqsoff_tracer_init()
632 static void irqsoff_tracer_reset(struct trace_array *tr)  in irqsoff_tracer_reset()  argument
634 	__irqsoff_tracer_reset(tr);  in irqsoff_tracer_reset()
675 static int preemptoff_tracer_init(struct trace_array *tr)  in preemptoff_tracer_init()  argument
679 	return __irqsoff_tracer_init(tr);  in preemptoff_tracer_init()
682 static void preemptoff_tracer_reset(struct trace_array *tr)  in preemptoff_tracer_reset()  argument
684 	__irqsoff_tracer_reset(tr);  in preemptoff_tracer_reset()
710 static int preemptirqsoff_tracer_init(struct trace_array *tr)  in preemptirqsoff_tracer_init()  argument
714 	return __irqsoff_tracer_init(tr);  in preemptirqsoff_tracer_init()
717 static void preemptirqsoff_tracer_reset(struct trace_array *tr)  in preemptirqsoff_tracer_reset()  argument
719 	__irqsoff_tracer_reset(tr);  in preemptirqsoff_tracer_reset()