245 static void reset_tracing_options(struct perf_ftrace *ftrace __maybe_unused)  in reset_tracing_options()
257 static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused)  in reset_tracing_files()
278 	reset_tracing_options(ftrace);  in reset_tracing_files()
282 static int set_tracing_pid(struct perf_ftrace *ftrace)  in set_tracing_pid()  argument
287 	if (target__has_cpu(&ftrace->target))  in set_tracing_pid()
290 	for (i = 0; i < perf_thread_map__nr(ftrace->evlist->core.threads); i++) {  in set_tracing_pid()
292 			  perf_thread_map__pid(ftrace->evlist->core.threads, i));  in set_tracing_pid()
324 static int set_tracing_cpu(struct perf_ftrace *ftrace)  in set_tracing_cpu()  argument
326 	struct perf_cpu_map *cpumap = ftrace->evlist->core.cpus;  in set_tracing_cpu()
328 	if (!target__has_cpu(&ftrace->target))  in set_tracing_cpu()
334 static int set_tracing_func_stack_trace(struct perf_ftrace *ftrace)  in set_tracing_func_stack_trace()  argument
336 	if (!ftrace->func_stack_trace)  in set_tracing_func_stack_trace()
345 static int set_tracing_func_irqinfo(struct perf_ftrace *ftrace)  in set_tracing_func_irqinfo()  argument
347 	if (!ftrace->func_irq_info)  in set_tracing_func_irqinfo()
378 static int set_tracing_filters(struct perf_ftrace *ftrace)  in set_tracing_filters()  argument
382 	ret = __set_tracing_filter("set_ftrace_filter", &ftrace->filters);  in set_tracing_filters()
386 	ret = __set_tracing_filter("set_ftrace_notrace", &ftrace->notrace);  in set_tracing_filters()
390 	ret = __set_tracing_filter("set_graph_function", &ftrace->graph_funcs);  in set_tracing_filters()
395 	__set_tracing_filter("set_graph_notrace", &ftrace->nograph_funcs);  in set_tracing_filters()
408 static int set_tracing_depth(struct perf_ftrace *ftrace)  in set_tracing_depth()  argument
410 	if (ftrace->graph_depth == 0)  in set_tracing_depth()
413 	if (ftrace->graph_depth < 0) {  in set_tracing_depth()
414 		pr_err("invalid graph depth: %d\n", ftrace->graph_depth);  in set_tracing_depth()
418 	if (write_tracing_file_int("max_graph_depth", ftrace->graph_depth) < 0)  in set_tracing_depth()
424 static int set_tracing_percpu_buffer_size(struct perf_ftrace *ftrace)  in set_tracing_percpu_buffer_size()  argument
428 	if (ftrace->percpu_buffer_size == 0)  in set_tracing_percpu_buffer_size()
432 				     ftrace->percpu_buffer_size / 1024);  in set_tracing_percpu_buffer_size()
439 static int set_tracing_trace_inherit(struct perf_ftrace *ftrace)  in set_tracing_trace_inherit()  argument
441 	if (!ftrace->inherit)  in set_tracing_trace_inherit()
450 static int set_tracing_sleep_time(struct perf_ftrace *ftrace)  in set_tracing_sleep_time()  argument
452 	if (!ftrace->graph_nosleep_time)  in set_tracing_sleep_time()
461 static int set_tracing_funcgraph_irqs(struct perf_ftrace *ftrace)  in set_tracing_funcgraph_irqs()  argument
463 	if (!ftrace->graph_noirqs)  in set_tracing_funcgraph_irqs()
472 static int set_tracing_funcgraph_verbose(struct perf_ftrace *ftrace)  in set_tracing_funcgraph_verbose()  argument
474 	if (!ftrace->graph_verbose)  in set_tracing_funcgraph_verbose()
489 static int set_tracing_thresh(struct perf_ftrace *ftrace)  in set_tracing_thresh()  argument
493 	if (ftrace->graph_thresh == 0)  in set_tracing_thresh()
496 	ret = write_tracing_file_int("tracing_thresh", ftrace->graph_thresh);  in set_tracing_thresh()
503 static int set_tracing_options(struct perf_ftrace *ftrace)  in set_tracing_options()  argument
505 	if (set_tracing_pid(ftrace) < 0) {  in set_tracing_options()
510 	if (set_tracing_cpu(ftrace) < 0) {  in set_tracing_options()
515 	if (set_tracing_func_stack_trace(ftrace) < 0) {  in set_tracing_options()
520 	if (set_tracing_func_irqinfo(ftrace) < 0) {  in set_tracing_options()
525 	if (set_tracing_filters(ftrace) < 0) {  in set_tracing_options()
530 	if (set_tracing_depth(ftrace) < 0) {  in set_tracing_options()
535 	if (set_tracing_percpu_buffer_size(ftrace) < 0) {  in set_tracing_options()
540 	if (set_tracing_trace_inherit(ftrace) < 0) {  in set_tracing_options()
545 	if (set_tracing_sleep_time(ftrace) < 0) {  in set_tracing_options()
550 	if (set_tracing_funcgraph_irqs(ftrace) < 0) {  in set_tracing_options()
555 	if (set_tracing_funcgraph_verbose(ftrace) < 0) {  in set_tracing_options()
560 	if (set_tracing_thresh(ftrace) < 0) {  in set_tracing_options()
568 static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv)  in __cmd_ftrace()  argument
594 	if (reset_tracing_files(ftrace) < 0) {  in __cmd_ftrace()
603 	if (argc && perf_evlist__prepare_workload(ftrace->evlist,  in __cmd_ftrace()
604 				&ftrace->target, argv, false,  in __cmd_ftrace()
609 	if (set_tracing_options(ftrace) < 0)  in __cmd_ftrace()
612 	if (write_tracing_file("current_tracer", ftrace->tracer) < 0) {  in __cmd_ftrace()
613 		pr_err("failed to set current_tracer to %s\n", ftrace->tracer);  in __cmd_ftrace()
640 	if (!ftrace->initial_delay) {  in __cmd_ftrace()
647 	perf_evlist__start_workload(ftrace->evlist);  in __cmd_ftrace()
649 	if (ftrace->initial_delay) {  in __cmd_ftrace()
650 		usleep(ftrace->initial_delay * 1000);  in __cmd_ftrace()
692 	reset_tracing_files(ftrace);  in __cmd_ftrace()
699 	struct perf_ftrace *ftrace = cb;  in perf_ftrace_config()  local
709 		ftrace->tracer = value;  in perf_ftrace_config()
818 	struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value;  in parse_func_tracer_opts()  local
820 		{ .name = "call-graph",	.value_ptr = &ftrace->func_stack_trace },  in parse_func_tracer_opts()
821 		{ .name = "irq-info",	.value_ptr = &ftrace->func_irq_info },  in parse_func_tracer_opts()
839 	struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value;  in parse_graph_tracer_opts()  local
841 		{ .name = "nosleep-time",	.value_ptr = &ftrace->graph_nosleep_time },  in parse_graph_tracer_opts()
842 		{ .name = "noirqs",		.value_ptr = &ftrace->graph_noirqs },  in parse_graph_tracer_opts()
843 		{ .name = "verbose",		.value_ptr = &ftrace->graph_verbose },  in parse_graph_tracer_opts()
844 		{ .name = "thresh",		.value_ptr = &ftrace->graph_thresh },  in parse_graph_tracer_opts()
845 		{ .name = "depth",		.value_ptr = &ftrace->graph_depth },  in parse_graph_tracer_opts()
859 static void select_tracer(struct perf_ftrace *ftrace)  in select_tracer()  argument
861 	bool graph = !list_empty(&ftrace->graph_funcs) ||  in select_tracer()
862 		     !list_empty(&ftrace->nograph_funcs);  in select_tracer()
863 	bool func = !list_empty(&ftrace->filters) ||  in select_tracer()
864 		    !list_empty(&ftrace->notrace);  in select_tracer()
868 		ftrace->tracer = "function_graph";  in select_tracer()
870 		ftrace->tracer = "function";  in select_tracer()
873 	pr_debug("%s tracer is used\n", ftrace->tracer);  in select_tracer()
879 	struct perf_ftrace ftrace = {  in cmd_ftrace()  local
889 	OPT_STRING('t', "tracer", &ftrace.tracer, "tracer",  in cmd_ftrace()
894 	OPT_STRING('p', "pid", &ftrace.target.pid, "pid",  in cmd_ftrace()
897 	OPT_STRING(0, "tid", &ftrace.target.tid, "tid",  in cmd_ftrace()
901 	OPT_BOOLEAN('a', "all-cpus", &ftrace.target.system_wide,  in cmd_ftrace()
903 	OPT_STRING('C', "cpu", &ftrace.target.cpu_list, "cpu",  in cmd_ftrace()
905 	OPT_CALLBACK('T', "trace-funcs", &ftrace.filters, "func",  in cmd_ftrace()
908 	OPT_CALLBACK('N', "notrace-funcs", &ftrace.notrace, "func",  in cmd_ftrace()
910 	OPT_CALLBACK(0, "func-opts", &ftrace, "options",  in cmd_ftrace()
913 	OPT_CALLBACK('G', "graph-funcs", &ftrace.graph_funcs, "func",  in cmd_ftrace()
916 	OPT_CALLBACK('g', "nograph-funcs", &ftrace.nograph_funcs, "func",  in cmd_ftrace()
918 	OPT_CALLBACK(0, "graph-opts", &ftrace, "options",  in cmd_ftrace()
921 	OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size",  in cmd_ftrace()
923 	OPT_BOOLEAN(0, "inherit", &ftrace.inherit,  in cmd_ftrace()
925 	OPT_UINTEGER('D', "delay", &ftrace.initial_delay,  in cmd_ftrace()
930 	INIT_LIST_HEAD(&ftrace.filters);  in cmd_ftrace()
931 	INIT_LIST_HEAD(&ftrace.notrace);  in cmd_ftrace()
932 	INIT_LIST_HEAD(&ftrace.graph_funcs);  in cmd_ftrace()
933 	INIT_LIST_HEAD(&ftrace.nograph_funcs);  in cmd_ftrace()
935 	ret = perf_config(perf_ftrace_config, &ftrace);  in cmd_ftrace()
941 	if (!argc && target__none(&ftrace.target))  in cmd_ftrace()
942 		ftrace.target.system_wide = true;  in cmd_ftrace()
944 	select_tracer(&ftrace);  in cmd_ftrace()
946 	ret = target__validate(&ftrace.target);  in cmd_ftrace()
950 		target__strerror(&ftrace.target, ret, errbuf, 512);  in cmd_ftrace()
955 	ftrace.evlist = evlist__new();  in cmd_ftrace()
956 	if (ftrace.evlist == NULL) {  in cmd_ftrace()
961 	ret = perf_evlist__create_maps(ftrace.evlist, &ftrace.target);  in cmd_ftrace()
965 	ret = __cmd_ftrace(&ftrace, argc, argv);  in cmd_ftrace()
968 	evlist__delete(ftrace.evlist);  in cmd_ftrace()
971 	delete_filter_func(&ftrace.filters);  in cmd_ftrace()
972 	delete_filter_func(&ftrace.notrace);  in cmd_ftrace()
973 	delete_filter_func(&ftrace.graph_funcs);  in cmd_ftrace()
974 	delete_filter_func(&ftrace.nograph_funcs);  in cmd_ftrace()