72 #define do_for_each_event_file(tr, file)			\  argument
73 	list_for_each_entry(tr, &ftrace_trace_arrays, list) {	\
74 		list_for_each_entry(file, &tr->events, list)
76 #define do_for_each_event_file_safe(tr, file)			\  argument
77 	list_for_each_entry(tr, &ftrace_trace_arrays, list) {	\
79 		list_for_each_entry_safe(file, ___n, &tr->events, list)
461 	struct trace_array *tr = trace_file->tr;  in trace_event_ignore_this_pid()  local
466 	pid_list = rcu_dereference_raw(tr->filtered_pids);  in trace_event_ignore_this_pid()
467 	no_pid_list = rcu_dereference_raw(tr->filtered_no_pids);  in trace_event_ignore_this_pid()
472 	data = this_cpu_ptr(tr->array_buffer.data);  in trace_event_ignore_this_pid()
551 	struct trace_array *tr;  in trace_event_enable_cmd_record()  local
555 	do_for_each_event_file(tr, file) {  in trace_event_enable_cmd_record()
573 	struct trace_array *tr;  in trace_event_enable_tgid_record()  local
577 	do_for_each_event_file(tr, file) {  in trace_event_enable_tgid_record()
596 	struct trace_array *tr = file->tr;  in __ftrace_event_enable_disable()  local
668 			if (tr->trace_flags & TRACE_ITER_RECORD_CMD) {  in __ftrace_event_enable_disable()
674 			if (tr->trace_flags & TRACE_ITER_RECORD_TGID) {  in __ftrace_event_enable_disable()
722 static void ftrace_clear_events(struct trace_array *tr)  in ftrace_clear_events()  argument
727 	list_for_each_entry(file, &tr->events, list) {  in ftrace_clear_events()
737 	struct trace_array *tr = data;  in event_filter_pid_sched_process_exit()  local
739 	pid_list = rcu_dereference_raw(tr->filtered_pids);  in event_filter_pid_sched_process_exit()
742 	pid_list = rcu_dereference_raw(tr->filtered_no_pids);  in event_filter_pid_sched_process_exit()
752 	struct trace_array *tr = data;  in event_filter_pid_sched_process_fork()  local
754 	pid_list = rcu_dereference_sched(tr->filtered_pids);  in event_filter_pid_sched_process_fork()
757 	pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in event_filter_pid_sched_process_fork()
761 void trace_event_follow_fork(struct trace_array *tr, bool enable)  in trace_event_follow_fork()  argument
765 						       tr, INT_MIN);  in trace_event_follow_fork()
767 						       tr, INT_MAX);  in trace_event_follow_fork()
770 						    tr);  in trace_event_follow_fork()
772 						    tr);  in trace_event_follow_fork()
782 	struct trace_array *tr = data;  in event_filter_pid_sched_switch_probe_pre()  local
787 	pid_list = rcu_dereference_sched(tr->filtered_pids);  in event_filter_pid_sched_switch_probe_pre()
788 	no_pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in event_filter_pid_sched_switch_probe_pre()
797 	this_cpu_write(tr->array_buffer.data->ignore_pid, ret ||  in event_filter_pid_sched_switch_probe_pre()
808 	struct trace_array *tr = data;  in event_filter_pid_sched_switch_probe_post()  local
812 	pid_list = rcu_dereference_sched(tr->filtered_pids);  in event_filter_pid_sched_switch_probe_post()
813 	no_pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in event_filter_pid_sched_switch_probe_post()
815 	this_cpu_write(tr->array_buffer.data->ignore_pid,  in event_filter_pid_sched_switch_probe_post()
822 	struct trace_array *tr = data;  in event_filter_pid_sched_wakeup_probe_pre()  local
827 	if (!this_cpu_read(tr->array_buffer.data->ignore_pid))  in event_filter_pid_sched_wakeup_probe_pre()
830 	pid_list = rcu_dereference_sched(tr->filtered_pids);  in event_filter_pid_sched_wakeup_probe_pre()
831 	no_pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in event_filter_pid_sched_wakeup_probe_pre()
833 	this_cpu_write(tr->array_buffer.data->ignore_pid,  in event_filter_pid_sched_wakeup_probe_pre()
840 	struct trace_array *tr = data;  in event_filter_pid_sched_wakeup_probe_post()  local
845 	if (this_cpu_read(tr->array_buffer.data->ignore_pid))  in event_filter_pid_sched_wakeup_probe_post()
848 	pid_list = rcu_dereference_sched(tr->filtered_pids);  in event_filter_pid_sched_wakeup_probe_post()
849 	no_pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in event_filter_pid_sched_wakeup_probe_post()
852 	this_cpu_write(tr->array_buffer.data->ignore_pid,  in event_filter_pid_sched_wakeup_probe_post()
856 static void unregister_pid_events(struct trace_array *tr)  in unregister_pid_events()  argument
858 	unregister_trace_sched_switch(event_filter_pid_sched_switch_probe_pre, tr);  in unregister_pid_events()
859 	unregister_trace_sched_switch(event_filter_pid_sched_switch_probe_post, tr);  in unregister_pid_events()
861 	unregister_trace_sched_wakeup(event_filter_pid_sched_wakeup_probe_pre, tr);  in unregister_pid_events()
862 	unregister_trace_sched_wakeup(event_filter_pid_sched_wakeup_probe_post, tr);  in unregister_pid_events()
864 	unregister_trace_sched_wakeup_new(event_filter_pid_sched_wakeup_probe_pre, tr);  in unregister_pid_events()
865 	unregister_trace_sched_wakeup_new(event_filter_pid_sched_wakeup_probe_post, tr);  in unregister_pid_events()
867 	unregister_trace_sched_waking(event_filter_pid_sched_wakeup_probe_pre, tr);  in unregister_pid_events()
868 	unregister_trace_sched_waking(event_filter_pid_sched_wakeup_probe_post, tr);  in unregister_pid_events()
871 static void __ftrace_clear_event_pids(struct trace_array *tr, int type)  in __ftrace_clear_event_pids()  argument
878 	pid_list = rcu_dereference_protected(tr->filtered_pids,  in __ftrace_clear_event_pids()
880 	no_pid_list = rcu_dereference_protected(tr->filtered_no_pids,  in __ftrace_clear_event_pids()
888 		unregister_pid_events(tr);  in __ftrace_clear_event_pids()
890 		list_for_each_entry(file, &tr->events, list) {  in __ftrace_clear_event_pids()
895 			per_cpu_ptr(tr->array_buffer.data, cpu)->ignore_pid = false;  in __ftrace_clear_event_pids()
899 		rcu_assign_pointer(tr->filtered_pids, NULL);  in __ftrace_clear_event_pids()
902 		rcu_assign_pointer(tr->filtered_no_pids, NULL);  in __ftrace_clear_event_pids()
914 static void ftrace_clear_event_pids(struct trace_array *tr, int type)  in ftrace_clear_event_pids()  argument
917 	__ftrace_clear_event_pids(tr, type);  in ftrace_clear_event_pids()
1008 __ftrace_set_clr_event_nolock(struct trace_array *tr, const char *match,  in __ftrace_set_clr_event_nolock()  argument
1017 	list_for_each_entry(file, &tr->events, list) {  in __ftrace_set_clr_event_nolock()
1055 static int __ftrace_set_clr_event(struct trace_array *tr, const char *match,  in __ftrace_set_clr_event()  argument
1061 	ret = __ftrace_set_clr_event_nolock(tr, match, sub, event, set);  in __ftrace_set_clr_event()
1067 int ftrace_set_clr_event(struct trace_array *tr, char *buf, int set)  in ftrace_set_clr_event()  argument
1072 	if (!tr)  in ftrace_set_clr_event()
1098 	ret = __ftrace_set_clr_event(tr, match, sub, event, set);  in ftrace_set_clr_event()
1121 	struct trace_array *tr = top_trace_array();  in trace_set_clr_event()  local
1123 	if (!tr)  in trace_set_clr_event()
1126 	return __ftrace_set_clr_event(tr, NULL, system, event, set);  in trace_set_clr_event()
1143 int trace_array_set_clr_event(struct trace_array *tr, const char *system,  in trace_array_set_clr_event()  argument
1148 	if (!tr)  in trace_array_set_clr_event()
1152 	return __ftrace_set_clr_event(tr, NULL, system, event, set);  in trace_array_set_clr_event()
1165 	struct trace_array *tr = m->private;  in ftrace_event_write()  local
1186 		ret = ftrace_set_clr_event(tr, parser.buffer + !set, set);  in ftrace_event_write()
1204 	struct trace_array *tr = m->private;  in t_next()  local
1208 	list_for_each_entry_continue(file, &tr->events, list) {  in t_next()
1225 	struct trace_array *tr = m->private;  in t_start()  local
1230 	file = list_entry(&tr->events, struct trace_event_file, list);  in t_start()
1243 	struct trace_array *tr = m->private;  in s_next()  local
1247 	list_for_each_entry_continue(file, &tr->events, list) {  in s_next()
1258 	struct trace_array *tr = m->private;  in s_start()  local
1263 	file = list_entry(&tr->events, struct trace_event_file, list);  in s_start()
1292 	struct trace_array *tr = m->private;  in __next()  local
1296 		pid_list = rcu_dereference_sched(tr->filtered_pids);  in __next()
1298 		pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in __next()
1319 	struct trace_array *tr = m->private;  in __start()  local
1331 		pid_list = rcu_dereference_sched(tr->filtered_pids);  in __start()
1333 		pid_list = rcu_dereference_sched(tr->filtered_no_pids);  in __start()
1435 	struct trace_array *tr = dir->tr;  in system_enable_read()  local
1441 	list_for_each_entry(file, &tr->events, list) {  in system_enable_read()
1501 	ret = __ftrace_set_clr_event(dir->tr, NULL, name, NULL, val);  in system_enable_write()
1729 	struct trace_array *tr = NULL, *iter_tr;  in subsystem_open()  local
1743 				tr = iter_tr;  in subsystem_open()
1761 	if (trace_array_get(tr) < 0) {  in subsystem_open()
1768 		trace_array_put(tr);  in subsystem_open()
1778 	struct trace_array *tr = inode->i_private;  in system_tr_open()  local
1791 	dir->tr = tr;  in system_tr_open()
1801 	trace_array_put(dir->tr);  in subsystem_release()
1895 	struct trace_array *tr = data;  in ignore_task_cpu()  local
1903 	pid_list = rcu_dereference_protected(tr->filtered_pids,  in ignore_task_cpu()
1905 	no_pid_list = rcu_dereference_protected(tr->filtered_no_pids,  in ignore_task_cpu()
1908 	this_cpu_write(tr->array_buffer.data->ignore_pid,  in ignore_task_cpu()
1912 static void register_pid_events(struct trace_array *tr)  in register_pid_events()  argument
1921 					 tr, INT_MAX);  in register_pid_events()
1923 					 tr, 0);  in register_pid_events()
1926 					 tr, INT_MAX);  in register_pid_events()
1928 					 tr, 0);  in register_pid_events()
1931 					     tr, INT_MAX);  in register_pid_events()
1933 					     tr, 0);  in register_pid_events()
1936 					 tr, INT_MAX);  in register_pid_events()
1938 					 tr, 0);  in register_pid_events()
1946 	struct trace_array *tr = m->private;  in event_pid_write()  local
1963 		filtered_pids = rcu_dereference_protected(tr->filtered_pids,  in event_pid_write()
1965 		other_pids = rcu_dereference_protected(tr->filtered_no_pids,  in event_pid_write()
1968 		filtered_pids = rcu_dereference_protected(tr->filtered_no_pids,  in event_pid_write()
1970 		other_pids = rcu_dereference_protected(tr->filtered_pids,  in event_pid_write()
1979 		rcu_assign_pointer(tr->filtered_pids, pid_list);  in event_pid_write()
1981 		rcu_assign_pointer(tr->filtered_no_pids, pid_list);  in event_pid_write()
1983 	list_for_each_entry(file, &tr->events, list) {  in event_pid_write()
1991 		register_pid_events(tr);  in event_pid_write()
1999 	on_each_cpu(ignore_task_cpu, tr, 1);  in event_pid_write()
2168 	struct trace_array *tr = inode->i_private;  in ftrace_event_release()  local
2170 	trace_array_put(tr);  in ftrace_event_release()
2188 	struct trace_array *tr = inode->i_private;  in ftrace_event_set_open()  local
2191 	ret = tracing_check_open_get_tr(tr);  in ftrace_event_set_open()
2197 		ftrace_clear_events(tr);  in ftrace_event_set_open()
2201 		trace_array_put(tr);  in ftrace_event_set_open()
2209 	struct trace_array *tr = inode->i_private;  in ftrace_event_set_pid_open()  local
2212 	ret = tracing_check_open_get_tr(tr);  in ftrace_event_set_pid_open()
2218 		ftrace_clear_event_pids(tr, TRACE_PIDS);  in ftrace_event_set_pid_open()
2222 		trace_array_put(tr);  in ftrace_event_set_pid_open()
2230 	struct trace_array *tr = inode->i_private;  in ftrace_event_set_npid_open()  local
2233 	ret = tracing_check_open_get_tr(tr);  in ftrace_event_set_npid_open()
2239 		ftrace_clear_event_pids(tr, TRACE_NO_PIDS);  in ftrace_event_set_npid_open()
2243 		trace_array_put(tr);  in ftrace_event_set_npid_open()
2281 event_subsystem_dir(struct trace_array *tr, const char *name,  in event_subsystem_dir()  argument
2289 	list_for_each_entry(dir, &tr->systems, list) {  in event_subsystem_dir()
2325 	dir->tr = tr;  in event_subsystem_dir()
2347 	list_add(&dir->list, &tr->systems);  in event_subsystem_dir()
2401 	struct trace_array *tr = file->tr;  in event_create_dir()  local
2411 		d_events = event_subsystem_dir(tr, call->class->system, file, parent);  in event_create_dir()
2476 	struct trace_array *tr;  in remove_event_from_tracers()  local
2478 	do_for_each_event_file_safe(tr, file) {  in remove_event_from_tracers()
2495 	struct trace_array *tr;  in event_remove()  local
2498 	do_for_each_event_file(tr, file) {  in event_remove()
2503 			tr->clear_trace = true;  in event_remove()
2769 		       struct trace_array *tr)  in trace_create_new_event()  argument
2780 	pid_list = rcu_dereference_protected(tr->filtered_pids,  in trace_create_new_event()
2782 	no_pid_list = rcu_dereference_protected(tr->filtered_no_pids,  in trace_create_new_event()
2790 	file->tr = tr;  in trace_create_new_event()
2794 	list_add(&file->list, &tr->events);  in trace_create_new_event()
2801 __trace_add_new_event(struct trace_event_call *call, struct trace_array *tr)  in __trace_add_new_event()  argument
2805 	file = trace_create_new_event(call, tr);  in __trace_add_new_event()
2810 		return event_create_dir(tr->event_dir, file);  in __trace_add_new_event()
2822 			    struct trace_array *tr)  in __trace_early_add_new_event()  argument
2826 	file = trace_create_new_event(call, tr);  in __trace_early_add_new_event()
2867 	struct trace_array *tr;  in probe_remove_event_call()  local
2874 	do_for_each_event_file(tr, file) {  in probe_remove_event_call()
2886 			tr->clear_trace = true;  in probe_remove_event_call()
2901 	list_for_each_entry(tr, &ftrace_trace_arrays, list) {  in probe_remove_event_call()
2902 		tr->clear_trace = false;  in probe_remove_event_call()
3016 __trace_add_event_dirs(struct trace_array *tr)  in __trace_add_event_dirs()  argument
3022 		ret = __trace_add_new_event(call, tr);  in __trace_add_event_dirs()
3031 __find_event_file(struct trace_array *tr, const char *system, const char *event)  in __find_event_file()  argument
3037 	list_for_each_entry(file, &tr->events, list) {  in __find_event_file()
3054 find_event_file(struct trace_array *tr, const char *system, const char *event)  in find_event_file()  argument
3058 	file = __find_event_file(tr, system, event);  in find_event_file()
3090 	struct trace_array *tr = top_trace_array();  in trace_get_event_file()  local
3095 		tr = trace_array_find_get(instance);  in trace_get_event_file()
3096 		if (!tr)  in trace_get_event_file()
3099 		ret = trace_array_get(tr);  in trace_get_event_file()
3106 	file = find_event_file(tr, system, event);  in trace_get_event_file()
3108 		trace_array_put(tr);  in trace_get_event_file()
3116 		trace_array_put(tr);  in trace_get_event_file()
3147 	trace_array_put(file->tr);  in trace_put_event_file()
3174 		   struct trace_array *tr, struct ftrace_probe_ops *ops,  in event_enable_probe()  argument
3191 			 struct trace_array *tr, struct ftrace_probe_ops *ops,  in event_enable_count_probe()  argument
3248 event_enable_init(struct ftrace_probe_ops *ops, struct trace_array *tr,  in event_enable_init()  argument
3286 event_enable_free(struct ftrace_probe_ops *ops, struct trace_array *tr,  in event_enable_free()  argument
3339 event_enable_func(struct trace_array *tr, struct ftrace_hash *hash,  in event_enable_func()  argument
3351 	if (!tr)  in event_enable_func()
3367 	file = find_event_file(tr, system, event);  in event_enable_func()
3379 		ret = unregister_ftrace_function_probe_func(glob+1, tr, ops);  in event_enable_func()
3422 	ret = register_ftrace_function_probe(glob, tr, ops, data);  in event_enable_func()
3481 static void __trace_early_add_event_dirs(struct trace_array *tr)  in __trace_early_add_event_dirs()  argument
3487 	list_for_each_entry(file, &tr->events, list) {  in __trace_early_add_event_dirs()
3488 		ret = event_create_dir(tr->event_dir, file);  in __trace_early_add_event_dirs()
3501 void __trace_early_add_events(struct trace_array *tr)  in __trace_early_add_events()  argument
3512 		ret = __trace_early_add_new_event(call, tr);  in __trace_early_add_events()
3521 __trace_remove_event_dirs(struct trace_array *tr)  in __trace_remove_event_dirs()  argument
3525 	list_for_each_entry_safe(file, next, &tr->events, list)  in __trace_remove_event_dirs()
3531 	struct trace_array *tr;  in __add_event_to_tracers()  local
3533 	list_for_each_entry(tr, &ftrace_trace_arrays, list)  in __add_event_to_tracers()
3534 		__trace_add_new_event(call, tr);  in __add_event_to_tracers()
3554 create_event_toplevel_files(struct dentry *parent, struct trace_array *tr)  in create_event_toplevel_files()  argument
3560 				  tr, &ftrace_set_event_fops);  in create_event_toplevel_files()
3571 				  tr, &ftrace_tr_enable_fops);  in create_event_toplevel_files()
3578 			  tr, &ftrace_set_event_pid_fops);  in create_event_toplevel_files()
3581 			  TRACE_MODE_WRITE, parent, tr,  in create_event_toplevel_files()
3593 	tr->event_dir = d_events;  in create_event_toplevel_files()
3611 int event_trace_add_tracer(struct dentry *parent, struct trace_array *tr)  in event_trace_add_tracer()  argument
3617 	ret = create_event_toplevel_files(parent, tr);  in event_trace_add_tracer()
3623 	if (unlikely(!list_empty(&tr->events)))  in event_trace_add_tracer()
3624 		__trace_early_add_event_dirs(tr);  in event_trace_add_tracer()
3626 		__trace_add_event_dirs(tr);  in event_trace_add_tracer()
3638 early_event_add_tracer(struct dentry *parent, struct trace_array *tr)  in early_event_add_tracer()  argument
3644 	ret = create_event_toplevel_files(parent, tr);  in early_event_add_tracer()
3649 	__trace_early_add_event_dirs(tr);  in early_event_add_tracer()
3659 int event_trace_del_tracer(struct trace_array *tr)  in event_trace_del_tracer()  argument
3664 	clear_event_triggers(tr);  in event_trace_del_tracer()
3667 	__ftrace_clear_event_pids(tr, TRACE_PIDS | TRACE_NO_PIDS);  in event_trace_del_tracer()
3670 	__ftrace_set_clr_event_nolock(tr, NULL, NULL, NULL, 0);  in event_trace_del_tracer()
3676 	__trace_remove_event_dirs(tr);  in event_trace_del_tracer()
3677 	tracefs_remove(tr->event_dir);  in event_trace_del_tracer()
3680 	tr->event_dir = NULL;  in event_trace_del_tracer()
3693 early_enable_events(struct trace_array *tr, bool disable_first)  in early_enable_events()  argument
3708 				ftrace_set_clr_event(tr, token, 0);  in early_enable_events()
3710 			ret = ftrace_set_clr_event(tr, token, 1);  in early_enable_events()
3723 	struct trace_array *tr = top_trace_array();  in event_trace_enable()  local
3727 	if (!tr)  in event_trace_enable()
3744 	__trace_early_add_events(tr);  in event_trace_enable()
3746 	early_enable_events(tr, false);  in event_trace_enable()
3769 	struct trace_array *tr;  in event_trace_enable_again()  local
3771 	tr = top_trace_array();  in event_trace_enable_again()
3772 	if (!tr)  in event_trace_enable_again()
3775 	early_enable_events(tr, true);  in event_trace_enable_again()
3796 	struct trace_array *tr;  in event_trace_init()  local
3799 	tr = top_trace_array();  in event_trace_init()
3800 	if (!tr)  in event_trace_init()
3804 			  NULL, tr, &ftrace_avail_fops);  in event_trace_init()
3806 	ret = early_event_add_tracer(NULL, tr);  in event_trace_init()
3892 	struct trace_array *tr;  in event_trace_self_tests()  local
3895 	tr = top_trace_array();  in event_trace_self_tests()
3896 	if (!tr)  in event_trace_self_tests()
3901 	list_for_each_entry(file, &tr->events, list) {  in event_trace_self_tests()
3944 	list_for_each_entry(dir, &tr->systems, list) {  in event_trace_self_tests()
3954 		ret = __ftrace_set_clr_event(tr, NULL, system->name, NULL, 1);  in event_trace_self_tests()
3963 		ret = __ftrace_set_clr_event(tr, NULL, system->name, NULL, 0);  in event_trace_self_tests()
3978 	ret = __ftrace_set_clr_event(tr, NULL, NULL, NULL, 1);  in event_trace_self_tests()
3987 	ret = __ftrace_set_clr_event(tr, NULL, NULL, NULL, 0);  in event_trace_self_tests()
4046 	event_trace_file.tr = top_trace_array();  in event_trace_self_test_with_function()
4047 	if (WARN_ON(!event_trace_file.tr))  in event_trace_self_test_with_function()