26 static int perf_trace_event_perm(struct trace_event_call *tp_event,  in perf_trace_event_perm()  argument
29 	if (tp_event->perf_perm) {  in perf_trace_event_perm()
30 		int ret = tp_event->perf_perm(tp_event, p_event);  in perf_trace_event_perm()
48 	if (ftrace_event_is_function(tp_event)) {  in perf_trace_event_perm()
77 		if (tp_event->flags & TRACE_EVENT_FL_CAP_ANY)  in perf_trace_event_perm()
91 static int perf_trace_event_reg(struct trace_event_call *tp_event,  in perf_trace_event_reg()  argument
98 	p_event->tp_event = tp_event;  in perf_trace_event_reg()
99 	if (tp_event->perf_refcount++ > 0)  in perf_trace_event_reg()
109 	tp_event->perf_events = list;  in perf_trace_event_reg()
124 	ret = tp_event->class->reg(tp_event, TRACE_REG_PERF_REGISTER, NULL);  in perf_trace_event_reg()
141 	if (!--tp_event->perf_refcount) {  in perf_trace_event_reg()
142 		free_percpu(tp_event->perf_events);  in perf_trace_event_reg()
143 		tp_event->perf_events = NULL;  in perf_trace_event_reg()
151 	struct trace_event_call *tp_event = p_event->tp_event;  in perf_trace_event_unreg()  local
154 	if (--tp_event->perf_refcount > 0)  in perf_trace_event_unreg()
157 	tp_event->class->reg(tp_event, TRACE_REG_PERF_UNREGISTER, NULL);  in perf_trace_event_unreg()
165 	free_percpu(tp_event->perf_events);  in perf_trace_event_unreg()
166 	tp_event->perf_events = NULL;  in perf_trace_event_unreg()
175 	module_put(tp_event->mod);  in perf_trace_event_unreg()
180 	struct trace_event_call *tp_event = p_event->tp_event;  in perf_trace_event_open()  local
181 	return tp_event->class->reg(tp_event, TRACE_REG_PERF_OPEN, p_event);  in perf_trace_event_open()
186 	struct trace_event_call *tp_event = p_event->tp_event;  in perf_trace_event_close()  local
187 	tp_event->class->reg(tp_event, TRACE_REG_PERF_CLOSE, p_event);  in perf_trace_event_close()
190 static int perf_trace_event_init(struct trace_event_call *tp_event,  in perf_trace_event_init()  argument
195 	ret = perf_trace_event_perm(tp_event, p_event);  in perf_trace_event_init()
199 	ret = perf_trace_event_reg(tp_event, p_event);  in perf_trace_event_init()
214 	struct trace_event_call *tp_event;  in perf_trace_init()  local
219 	list_for_each_entry(tp_event, &ftrace_events, list) {  in perf_trace_init()
220 		if (tp_event->event.type == event_id &&  in perf_trace_init()
221 		    tp_event->class && tp_event->class->reg &&  in perf_trace_init()
222 		    try_module_get(tp_event->mod)) {  in perf_trace_init()
223 			ret = perf_trace_event_init(tp_event, p_event);  in perf_trace_init()
225 				module_put(tp_event->mod);  in perf_trace_init()
247 	struct trace_event_call *tp_event;  in perf_kprobe_init()  local
267 	tp_event = create_local_trace_kprobe(  in perf_kprobe_init()
270 	if (IS_ERR(tp_event)) {  in perf_kprobe_init()
271 		ret = PTR_ERR(tp_event);  in perf_kprobe_init()
276 	ret = perf_trace_event_init(tp_event, p_event);  in perf_kprobe_init()
278 		destroy_local_trace_kprobe(tp_event);  in perf_kprobe_init()
292 	destroy_local_trace_kprobe(p_event->tp_event);  in perf_kprobe_destroy()
302 	struct trace_event_call *tp_event;  in perf_uprobe_init()  local
318 	tp_event = create_local_trace_uprobe(path, p_event->attr.probe_offset,  in perf_uprobe_init()
320 	if (IS_ERR(tp_event)) {  in perf_uprobe_init()
321 		ret = PTR_ERR(tp_event);  in perf_uprobe_init()
331 	ret = perf_trace_event_init(tp_event, p_event);  in perf_uprobe_init()
333 		destroy_local_trace_uprobe(tp_event);  in perf_uprobe_init()
346 	destroy_local_trace_uprobe(p_event->tp_event);  in perf_uprobe_destroy()
352 	struct trace_event_call *tp_event = p_event->tp_event;  in perf_trace_add()  local
362 	if (!tp_event->class->reg(tp_event, TRACE_REG_PERF_ADD, p_event)) {  in perf_trace_add()
366 		pcpu_list = tp_event->perf_events;  in perf_trace_add()
379 	struct trace_event_call *tp_event = p_event->tp_event;  in perf_trace_del()  local
386 	if (!tp_event->class->reg(tp_event, TRACE_REG_PERF_DEL, p_event))  in perf_trace_del()