64 #define do_for_each_event_file(tr, file)			\  argument
65 	list_for_each_entry(tr, &ftrace_trace_arrays, list) {	\
66 		list_for_each_entry(file, &tr->events, list)
68 #define do_for_each_event_file_safe(tr, file)			\  argument
69 	list_for_each_entry(tr, &ftrace_trace_arrays, list) {	\
71 		list_for_each_entry_safe(file, ___n, &tr->events, list)
445 	struct trace_array *tr = trace_file->tr;  in trace_event_ignore_this_pid()  local
450 	pid_list = rcu_dereference_raw(tr->filtered_pids);  in trace_event_ignore_this_pid()
451 	no_pid_list = rcu_dereference_raw(tr->filtered_no_pids);  in trace_event_ignore_this_pid()
456 	data = this_cpu_ptr(tr->array_buffer.data);  in trace_event_ignore_this_pid()
535 	struct trace_array *tr;  in trace_event_enable_cmd_record()  local
539 	do_for_each_event_file(tr, file) {  in trace_event_enable_cmd_record()
557 	struct trace_array *tr;  in trace_event_enable_tgid_record()  local
561 	do_for_each_event_file(tr, file) {  in trace_event_enable_tgid_record()
580 	struct trace_array *tr = file->tr;  in __ftrace_event_enable_disable()  local
652 			if (tr->trace_flags & TRACE_ITER_RECORD_CMD) {  in __ftrace_event_enable_disable()
658 			if (tr->trace_flags & TRACE_ITER_RECORD_TGID) {  in __ftrace_event_enable_disable()
706 static void ftrace_clear_events(struct trace_array *tr)  in ftrace_clear_events()  argument
711 	list_for_each_entry(file, &tr->events, list) {  in ftrace_clear_events()
721 	struct trace_array *tr = data;  in event_filter_pid_sched_process_exit()  local
723 	pid_list = rcu_dereference_raw(tr->filtered_pids);  in event_filter_pid_sched_process_exit()
726 	pid_list = rcu_dereference_raw(tr->filtered_no_pids);  in event_filter_pid_sched_process_exit()
736 	struct trace_array *tr = data;  in event_filter_pid_sched_process_fork()  local
738 	pid_list = rcu_dereference_sched(tr->filtered_pids);  in event_filter_pid_sched_process_fork()
741 	pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in event_filter_pid_sched_process_fork()
745 void trace_event_follow_fork(struct trace_array *tr, bool enable)  in trace_event_follow_fork()  argument
749 						       tr, INT_MIN);  in trace_event_follow_fork()
751 						       tr, INT_MAX);  in trace_event_follow_fork()
754 						    tr);  in trace_event_follow_fork()
756 						    tr);  in trace_event_follow_fork()
764 	struct trace_array *tr = data;  in event_filter_pid_sched_switch_probe_pre()  local
769 	pid_list = rcu_dereference_sched(tr->filtered_pids);  in event_filter_pid_sched_switch_probe_pre()
770 	no_pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in event_filter_pid_sched_switch_probe_pre()
779 	this_cpu_write(tr->array_buffer.data->ignore_pid, ret ||  in event_filter_pid_sched_switch_probe_pre()
788 	struct trace_array *tr = data;  in event_filter_pid_sched_switch_probe_post()  local
792 	pid_list = rcu_dereference_sched(tr->filtered_pids);  in event_filter_pid_sched_switch_probe_post()
793 	no_pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in event_filter_pid_sched_switch_probe_post()
795 	this_cpu_write(tr->array_buffer.data->ignore_pid,  in event_filter_pid_sched_switch_probe_post()
802 	struct trace_array *tr = data;  in event_filter_pid_sched_wakeup_probe_pre()  local
807 	if (!this_cpu_read(tr->array_buffer.data->ignore_pid))  in event_filter_pid_sched_wakeup_probe_pre()
810 	pid_list = rcu_dereference_sched(tr->filtered_pids);  in event_filter_pid_sched_wakeup_probe_pre()
811 	no_pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in event_filter_pid_sched_wakeup_probe_pre()
813 	this_cpu_write(tr->array_buffer.data->ignore_pid,  in event_filter_pid_sched_wakeup_probe_pre()
820 	struct trace_array *tr = data;  in event_filter_pid_sched_wakeup_probe_post()  local
825 	if (this_cpu_read(tr->array_buffer.data->ignore_pid))  in event_filter_pid_sched_wakeup_probe_post()
828 	pid_list = rcu_dereference_sched(tr->filtered_pids);  in event_filter_pid_sched_wakeup_probe_post()
829 	no_pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in event_filter_pid_sched_wakeup_probe_post()
832 	this_cpu_write(tr->array_buffer.data->ignore_pid,  in event_filter_pid_sched_wakeup_probe_post()
836 static void unregister_pid_events(struct trace_array *tr)  in unregister_pid_events()  argument
838 	unregister_trace_sched_switch(event_filter_pid_sched_switch_probe_pre, tr);  in unregister_pid_events()
839 	unregister_trace_sched_switch(event_filter_pid_sched_switch_probe_post, tr);  in unregister_pid_events()
841 	unregister_trace_sched_wakeup(event_filter_pid_sched_wakeup_probe_pre, tr);  in unregister_pid_events()
842 	unregister_trace_sched_wakeup(event_filter_pid_sched_wakeup_probe_post, tr);  in unregister_pid_events()
844 	unregister_trace_sched_wakeup_new(event_filter_pid_sched_wakeup_probe_pre, tr);  in unregister_pid_events()
845 	unregister_trace_sched_wakeup_new(event_filter_pid_sched_wakeup_probe_post, tr);  in unregister_pid_events()
847 	unregister_trace_sched_waking(event_filter_pid_sched_wakeup_probe_pre, tr);  in unregister_pid_events()
848 	unregister_trace_sched_waking(event_filter_pid_sched_wakeup_probe_post, tr);  in unregister_pid_events()
851 static void __ftrace_clear_event_pids(struct trace_array *tr, int type)  in __ftrace_clear_event_pids()  argument
858 	pid_list = rcu_dereference_protected(tr->filtered_pids,  in __ftrace_clear_event_pids()
860 	no_pid_list = rcu_dereference_protected(tr->filtered_no_pids,  in __ftrace_clear_event_pids()
868 		unregister_pid_events(tr);  in __ftrace_clear_event_pids()
870 		list_for_each_entry(file, &tr->events, list) {  in __ftrace_clear_event_pids()
875 			per_cpu_ptr(tr->array_buffer.data, cpu)->ignore_pid = false;  in __ftrace_clear_event_pids()
879 		rcu_assign_pointer(tr->filtered_pids, NULL);  in __ftrace_clear_event_pids()
882 		rcu_assign_pointer(tr->filtered_no_pids, NULL);  in __ftrace_clear_event_pids()
894 static void ftrace_clear_event_pids(struct trace_array *tr, int type)  in ftrace_clear_event_pids()  argument
897 	__ftrace_clear_event_pids(tr, type);  in ftrace_clear_event_pids()
988 __ftrace_set_clr_event_nolock(struct trace_array *tr, const char *match,  in __ftrace_set_clr_event_nolock()  argument
997 	list_for_each_entry(file, &tr->events, list) {  in __ftrace_set_clr_event_nolock()
1035 static int __ftrace_set_clr_event(struct trace_array *tr, const char *match,  in __ftrace_set_clr_event()  argument
1041 	ret = __ftrace_set_clr_event_nolock(tr, match, sub, event, set);  in __ftrace_set_clr_event()
1047 int ftrace_set_clr_event(struct trace_array *tr, char *buf, int set)  in ftrace_set_clr_event()  argument
1052 	if (!tr)  in ftrace_set_clr_event()
1078 	ret = __ftrace_set_clr_event(tr, match, sub, event, set);  in ftrace_set_clr_event()
1101 	struct trace_array *tr = top_trace_array();  in trace_set_clr_event()  local
1103 	if (!tr)  in trace_set_clr_event()
1106 	return __ftrace_set_clr_event(tr, NULL, system, event, set);  in trace_set_clr_event()
1123 int trace_array_set_clr_event(struct trace_array *tr, const char *system,  in trace_array_set_clr_event()  argument
1128 	if (!tr)  in trace_array_set_clr_event()
1132 	return __ftrace_set_clr_event(tr, NULL, system, event, set);  in trace_array_set_clr_event()
1145 	struct trace_array *tr = m->private;  in ftrace_event_write()  local
1166 		ret = ftrace_set_clr_event(tr, parser.buffer + !set, set);  in ftrace_event_write()
1184 	struct trace_array *tr = m->private;  in t_next()  local
1188 	list_for_each_entry_continue(file, &tr->events, list) {  in t_next()
1205 	struct trace_array *tr = m->private;  in t_start()  local
1210 	file = list_entry(&tr->events, struct trace_event_file, list);  in t_start()
1223 	struct trace_array *tr = m->private;  in s_next()  local
1227 	list_for_each_entry_continue(file, &tr->events, list) {  in s_next()
1238 	struct trace_array *tr = m->private;  in s_start()  local
1243 	file = list_entry(&tr->events, struct trace_event_file, list);  in s_start()
1272 	struct trace_array *tr = m->private;  in __next()  local
1276 		pid_list = rcu_dereference_sched(tr->filtered_pids);  in __next()
1278 		pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in __next()
1299 	struct trace_array *tr = m->private;  in __start()  local
1311 		pid_list = rcu_dereference_sched(tr->filtered_pids);  in __start()
1313 		pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in __start()
1415 	struct trace_array *tr = dir->tr;  in system_enable_read()  local
1421 	list_for_each_entry(file, &tr->events, list) {  in system_enable_read()
1481 	ret = __ftrace_set_clr_event(dir->tr, NULL, name, NULL, val);  in system_enable_write()
1710 	struct trace_array *tr;  in subsystem_open()  local
1719 	list_for_each_entry(tr, &ftrace_trace_arrays, list) {  in subsystem_open()
1720 		list_for_each_entry(dir, &tr->systems, list) {  in subsystem_open()
1742 	if (trace_array_get(tr) < 0) {  in subsystem_open()
1749 		trace_array_put(tr);  in subsystem_open()
1759 	struct trace_array *tr = inode->i_private;  in system_tr_open()  local
1772 	dir->tr = tr;  in system_tr_open()
1782 	trace_array_put(dir->tr);  in subsystem_release()
1876 	struct trace_array *tr = data;  in ignore_task_cpu()  local
1884 	pid_list = rcu_dereference_protected(tr->filtered_pids,  in ignore_task_cpu()
1886 	no_pid_list = rcu_dereference_protected(tr->filtered_no_pids,  in ignore_task_cpu()
1889 	this_cpu_write(tr->array_buffer.data->ignore_pid,  in ignore_task_cpu()
1893 static void register_pid_events(struct trace_array *tr)  in register_pid_events()  argument
1902 					 tr, INT_MAX);  in register_pid_events()
1904 					 tr, 0);  in register_pid_events()
1907 					 tr, INT_MAX);  in register_pid_events()
1909 					 tr, 0);  in register_pid_events()
1912 					     tr, INT_MAX);  in register_pid_events()
1914 					     tr, 0);  in register_pid_events()
1917 					 tr, INT_MAX);  in register_pid_events()
1919 					 tr, 0);  in register_pid_events()
1927 	struct trace_array *tr = m->private;  in event_pid_write()  local
1944 		filtered_pids = rcu_dereference_protected(tr->filtered_pids,  in event_pid_write()
1946 		other_pids = rcu_dereference_protected(tr->filtered_no_pids,  in event_pid_write()
1949 		filtered_pids = rcu_dereference_protected(tr->filtered_no_pids,  in event_pid_write()
1951 		other_pids = rcu_dereference_protected(tr->filtered_pids,  in event_pid_write()
1960 		rcu_assign_pointer(tr->filtered_pids, pid_list);  in event_pid_write()
1962 		rcu_assign_pointer(tr->filtered_no_pids, pid_list);  in event_pid_write()
1964 	list_for_each_entry(file, &tr->events, list) {  in event_pid_write()
1972 		register_pid_events(tr);  in event_pid_write()
1980 	on_each_cpu(ignore_task_cpu, tr, 1);  in event_pid_write()
2149 	struct trace_array *tr = inode->i_private;  in ftrace_event_release()  local
2151 	trace_array_put(tr);  in ftrace_event_release()
2169 	struct trace_array *tr = inode->i_private;  in ftrace_event_set_open()  local
2172 	ret = tracing_check_open_get_tr(tr);  in ftrace_event_set_open()
2178 		ftrace_clear_events(tr);  in ftrace_event_set_open()
2182 		trace_array_put(tr);  in ftrace_event_set_open()
2190 	struct trace_array *tr = inode->i_private;  in ftrace_event_set_pid_open()  local
2193 	ret = tracing_check_open_get_tr(tr);  in ftrace_event_set_pid_open()
2199 		ftrace_clear_event_pids(tr, TRACE_PIDS);  in ftrace_event_set_pid_open()
2203 		trace_array_put(tr);  in ftrace_event_set_pid_open()
2211 	struct trace_array *tr = inode->i_private;  in ftrace_event_set_npid_open()  local
2214 	ret = tracing_check_open_get_tr(tr);  in ftrace_event_set_npid_open()
2220 		ftrace_clear_event_pids(tr, TRACE_NO_PIDS);  in ftrace_event_set_npid_open()
2224 		trace_array_put(tr);  in ftrace_event_set_npid_open()
2262 event_subsystem_dir(struct trace_array *tr, const char *name,  in event_subsystem_dir()  argument
2270 	list_for_each_entry(dir, &tr->systems, list) {  in event_subsystem_dir()
2306 	dir->tr = tr;  in event_subsystem_dir()
2327 	list_add(&dir->list, &tr->systems);  in event_subsystem_dir()
2381 	struct trace_array *tr = file->tr;  in event_create_dir()  local
2391 		d_events = event_subsystem_dir(tr, call->class->system, file, parent);  in event_create_dir()
2456 	struct trace_array *tr;  in remove_event_from_tracers()  local
2458 	do_for_each_event_file_safe(tr, file) {  in remove_event_from_tracers()
2475 	struct trace_array *tr;  in event_remove()  local
2478 	do_for_each_event_file(tr, file) {  in event_remove()
2483 			tr->clear_trace = true;  in event_remove()
2678 		       struct trace_array *tr)  in trace_create_new_event()  argument
2687 	file->tr = tr;  in trace_create_new_event()
2691 	list_add(&file->list, &tr->events);  in trace_create_new_event()
2698 __trace_add_new_event(struct trace_event_call *call, struct trace_array *tr)  in __trace_add_new_event()  argument
2702 	file = trace_create_new_event(call, tr);  in __trace_add_new_event()
2707 		return event_create_dir(tr->event_dir, file);  in __trace_add_new_event()
2719 			    struct trace_array *tr)  in __trace_early_add_new_event()  argument
2723 	file = trace_create_new_event(call, tr);  in __trace_early_add_new_event()
2763 	struct trace_array *tr;  in probe_remove_event_call()  local
2770 	do_for_each_event_file(tr, file) {  in probe_remove_event_call()
2893 __trace_add_event_dirs(struct trace_array *tr)  in __trace_add_event_dirs()  argument
2899 		ret = __trace_add_new_event(call, tr);  in __trace_add_event_dirs()
2908 __find_event_file(struct trace_array *tr, const char *system, const char *event)  in __find_event_file()  argument
2914 	list_for_each_entry(file, &tr->events, list) {  in __find_event_file()
2931 find_event_file(struct trace_array *tr, const char *system, const char *event)  in find_event_file()  argument
2935 	file = __find_event_file(tr, system, event);  in find_event_file()
2967 	struct trace_array *tr = top_trace_array();  in trace_get_event_file()  local
2972 		tr = trace_array_find_get(instance);  in trace_get_event_file()
2973 		if (!tr)  in trace_get_event_file()
2976 		ret = trace_array_get(tr);  in trace_get_event_file()
2983 	file = find_event_file(tr, system, event);  in trace_get_event_file()
2985 		trace_array_put(tr);  in trace_get_event_file()
2993 		trace_array_put(tr);  in trace_get_event_file()
3024 	trace_array_put(file->tr);  in trace_put_event_file()
3051 		   struct trace_array *tr, struct ftrace_probe_ops *ops,  in event_enable_probe()  argument
3068 			 struct trace_array *tr, struct ftrace_probe_ops *ops,  in event_enable_count_probe()  argument
3125 event_enable_init(struct ftrace_probe_ops *ops, struct trace_array *tr,  in event_enable_init()  argument
3163 event_enable_free(struct ftrace_probe_ops *ops, struct trace_array *tr,  in event_enable_free()  argument
3216 event_enable_func(struct trace_array *tr, struct ftrace_hash *hash,  in event_enable_func()  argument
3228 	if (!tr)  in event_enable_func()
3244 	file = find_event_file(tr, system, event);  in event_enable_func()
3256 		ret = unregister_ftrace_function_probe_func(glob+1, tr, ops);  in event_enable_func()
3299 	ret = register_ftrace_function_probe(glob, tr, ops, data);  in event_enable_func()
3358 static void __trace_early_add_event_dirs(struct trace_array *tr)  in __trace_early_add_event_dirs()  argument
3364 	list_for_each_entry(file, &tr->events, list) {  in __trace_early_add_event_dirs()
3365 		ret = event_create_dir(tr->event_dir, file);  in __trace_early_add_event_dirs()
3378 void __trace_early_add_events(struct trace_array *tr)  in __trace_early_add_events()  argument
3389 		ret = __trace_early_add_new_event(call, tr);  in __trace_early_add_events()
3398 __trace_remove_event_dirs(struct trace_array *tr)  in __trace_remove_event_dirs()  argument
3402 	list_for_each_entry_safe(file, next, &tr->events, list)  in __trace_remove_event_dirs()
3408 	struct trace_array *tr;  in __add_event_to_tracers()  local
3410 	list_for_each_entry(tr, &ftrace_trace_arrays, list)  in __add_event_to_tracers()
3411 		__trace_add_new_event(call, tr);  in __add_event_to_tracers()
3431 create_event_toplevel_files(struct dentry *parent, struct trace_array *tr)  in create_event_toplevel_files()  argument
3437 				    tr, &ftrace_set_event_fops);  in create_event_toplevel_files()
3450 				  tr, &ftrace_tr_enable_fops);  in create_event_toplevel_files()
3459 				    tr, &ftrace_set_event_pid_fops);  in create_event_toplevel_files()
3464 				    tr, &ftrace_set_event_notrace_pid_fops);  in create_event_toplevel_files()
3481 	tr->event_dir = d_events;  in create_event_toplevel_files()
3499 int event_trace_add_tracer(struct dentry *parent, struct trace_array *tr)  in event_trace_add_tracer()  argument
3505 	ret = create_event_toplevel_files(parent, tr);  in event_trace_add_tracer()
3511 	if (unlikely(!list_empty(&tr->events)))  in event_trace_add_tracer()
3512 		__trace_early_add_event_dirs(tr);  in event_trace_add_tracer()
3514 		__trace_add_event_dirs(tr);  in event_trace_add_tracer()
3526 early_event_add_tracer(struct dentry *parent, struct trace_array *tr)  in early_event_add_tracer()  argument
3532 	ret = create_event_toplevel_files(parent, tr);  in early_event_add_tracer()
3537 	__trace_early_add_event_dirs(tr);  in early_event_add_tracer()
3547 int event_trace_del_tracer(struct trace_array *tr)  in event_trace_del_tracer()  argument
3552 	clear_event_triggers(tr);  in event_trace_del_tracer()
3555 	__ftrace_clear_event_pids(tr, TRACE_PIDS | TRACE_NO_PIDS);  in event_trace_del_tracer()
3558 	__ftrace_set_clr_event_nolock(tr, NULL, NULL, NULL, 0);  in event_trace_del_tracer()
3564 	__trace_remove_event_dirs(tr);  in event_trace_del_tracer()
3565 	tracefs_remove(tr->event_dir);  in event_trace_del_tracer()
3568 	tr->event_dir = NULL;  in event_trace_del_tracer()
3581 early_enable_events(struct trace_array *tr, bool disable_first)  in early_enable_events()  argument
3596 				ftrace_set_clr_event(tr, token, 0);  in early_enable_events()
3598 			ret = ftrace_set_clr_event(tr, token, 1);  in early_enable_events()
3611 	struct trace_array *tr = top_trace_array();  in event_trace_enable()  local
3615 	if (!tr)  in event_trace_enable()
3632 	__trace_early_add_events(tr);  in event_trace_enable()
3634 	early_enable_events(tr, false);  in event_trace_enable()
3657 	struct trace_array *tr;  in event_trace_enable_again()  local
3659 	tr = top_trace_array();  in event_trace_enable_again()
3660 	if (!tr)  in event_trace_enable_again()
3663 	early_enable_events(tr, true);  in event_trace_enable_again()
3684 	struct trace_array *tr;  in event_trace_init()  local
3688 	tr = top_trace_array();  in event_trace_init()
3689 	if (!tr)  in event_trace_init()
3693 				    tr, &ftrace_avail_fops);  in event_trace_init()
3697 	ret = early_event_add_tracer(NULL, tr);  in event_trace_init()
3783 	struct trace_array *tr;  in event_trace_self_tests()  local
3786 	tr = top_trace_array();  in event_trace_self_tests()
3787 	if (!tr)  in event_trace_self_tests()
3792 	list_for_each_entry(file, &tr->events, list) {  in event_trace_self_tests()
3835 	list_for_each_entry(dir, &tr->systems, list) {  in event_trace_self_tests()
3845 		ret = __ftrace_set_clr_event(tr, NULL, system->name, NULL, 1);  in event_trace_self_tests()
3854 		ret = __ftrace_set_clr_event(tr, NULL, system->name, NULL, 0);  in event_trace_self_tests()
3869 	ret = __ftrace_set_clr_event(tr, NULL, NULL, NULL, 1);  in event_trace_self_tests()
3878 	ret = __ftrace_set_clr_event(tr, NULL, NULL, NULL, 0);  in event_trace_self_tests()
3937 	event_trace_file.tr = top_trace_array();  in event_trace_self_test_with_function()
3938 	if (WARN_ON(!event_trace_file.tr))  in event_trace_self_test_with_function()