11128 		 struct perf_event *parent_event,  in perf_event_alloc()  argument
11180 	event->parent		= parent_event;  in perf_event_alloc()
11198 	if (parent_event)  in perf_event_alloc()
11199 		event->clock = parent_event->clock;  in perf_event_alloc()
11201 	if (!overflow_handler && parent_event) {  in perf_event_alloc()
11202 		overflow_handler = parent_event->overflow_handler;  in perf_event_alloc()
11203 		context = parent_event->overflow_handler_context;  in perf_event_alloc()
11206 			struct bpf_prog *prog = parent_event->prog;  in perf_event_alloc()
11211 				parent_event->orig_overflow_handler;  in perf_event_alloc()
12222 	struct perf_event *parent_event = child_event->parent;  in sync_child_event()  local
12233 	atomic64_add(child_val, &parent_event->child_count);  in sync_child_event()
12235 		     &parent_event->child_total_time_enabled);  in sync_child_event()
12237 		     &parent_event->child_total_time_running);  in sync_child_event()
12245 	struct perf_event *parent_event = child_event->parent;  in perf_event_exit_event()  local
12262 	if (parent_event)  in perf_event_exit_event()
12271 	if (!parent_event) {  in perf_event_exit_event()
12284 	WARN_ON_ONCE(parent_event->ctx->parent_ctx);  in perf_event_exit_event()
12285 	mutex_lock(&parent_event->child_mutex);  in perf_event_exit_event()
12287 	mutex_unlock(&parent_event->child_mutex);  in perf_event_exit_event()
12292 	perf_event_wakeup(parent_event);  in perf_event_exit_event()
12294 	put_event(parent_event);  in perf_event_exit_event()
12518 inherit_event(struct perf_event *parent_event,  in inherit_event()  argument
12525 	enum perf_event_state parent_state = parent_event->state;  in inherit_event()
12535 	if (parent_event->parent)  in inherit_event()
12536 		parent_event = parent_event->parent;  in inherit_event()
12538 	child_event = perf_event_alloc(&parent_event->attr,  in inherit_event()
12539 					   parent_event->cpu,  in inherit_event()
12541 					   group_leader, parent_event,  in inherit_event()
12564 	mutex_lock(&parent_event->child_mutex);  in inherit_event()
12565 	if (is_orphaned_event(parent_event) ||  in inherit_event()
12566 	    !atomic_long_inc_not_zero(&parent_event->refcount)) {  in inherit_event()
12567 		mutex_unlock(&parent_event->child_mutex);  in inherit_event()
12585 	if (parent_event->attr.freq) {  in inherit_event()
12586 		u64 sample_period = parent_event->hw.sample_period;  in inherit_event()
12596 	child_event->overflow_handler = parent_event->overflow_handler;  in inherit_event()
12598 		= parent_event->overflow_handler_context;  in inherit_event()
12616 	list_add_tail(&child_event->child_list, &parent_event->child_list);  in inherit_event()
12617 	mutex_unlock(&parent_event->child_mutex);  in inherit_event()
12632 static int inherit_group(struct perf_event *parent_event,  in inherit_group()  argument
12642 	leader = inherit_event(parent_event, parent, parent_ctx,  in inherit_group()
12651 	for_each_sibling_event(sub, parent_event) {  in inherit_group()
12657 		if (sub->aux_event == parent_event && child_ctr &&  in inherit_group()