3740 		struct perf_event *parent_event = event->parent;  in orphans_remove_work()  local
3747 		mutex_lock(&parent_event->child_mutex);  in orphans_remove_work()
3749 		mutex_unlock(&parent_event->child_mutex);  in orphans_remove_work()
3752 		put_event(parent_event);  in orphans_remove_work()
7520 		 struct perf_event *parent_event,  in perf_event_alloc()  argument
7568 	event->parent		= parent_event;  in perf_event_alloc()
7586 	if (parent_event)  in perf_event_alloc()
7587 		event->clock = parent_event->clock;  in perf_event_alloc()
7589 	if (!overflow_handler && parent_event) {  in perf_event_alloc()
7590 		overflow_handler = parent_event->overflow_handler;  in perf_event_alloc()
7591 		context = parent_event->overflow_handler_context;  in perf_event_alloc()
8371 	struct perf_event *parent_event = child_event->parent;  in sync_child_event()  local
8382 	atomic64_add(child_val, &parent_event->child_count);  in sync_child_event()
8384 		     &parent_event->child_total_time_enabled);  in sync_child_event()
8386 		     &parent_event->child_total_time_running);  in sync_child_event()
8391 	WARN_ON_ONCE(parent_event->ctx->parent_ctx);  in sync_child_event()
8392 	mutex_lock(&parent_event->child_mutex);  in sync_child_event()
8394 	mutex_unlock(&parent_event->child_mutex);  in sync_child_event()
8400 	perf_event_wakeup(parent_event);  in sync_child_event()
8406 	put_event(parent_event);  in sync_child_event()
8608 inherit_event(struct perf_event *parent_event,  in inherit_event()  argument
8615 	enum perf_event_active_state parent_state = parent_event->state;  in inherit_event()
8625 	if (parent_event->parent)  in inherit_event()
8626 		parent_event = parent_event->parent;  in inherit_event()
8628 	child_event = perf_event_alloc(&parent_event->attr,  in inherit_event()
8629 					   parent_event->cpu,  in inherit_event()
8631 					   group_leader, parent_event,  in inherit_event()
8636 	if (is_orphaned_event(parent_event) ||  in inherit_event()
8637 	    !atomic_long_inc_not_zero(&parent_event->refcount)) {  in inherit_event()
8654 	if (parent_event->attr.freq) {  in inherit_event()
8655 		u64 sample_period = parent_event->hw.sample_period;  in inherit_event()
8665 	child_event->overflow_handler = parent_event->overflow_handler;  in inherit_event()
8667 		= parent_event->overflow_handler_context;  in inherit_event()
8685 	WARN_ON_ONCE(parent_event->ctx->parent_ctx);  in inherit_event()
8686 	mutex_lock(&parent_event->child_mutex);  in inherit_event()
8687 	list_add_tail(&child_event->child_list, &parent_event->child_list);  in inherit_event()
8688 	mutex_unlock(&parent_event->child_mutex);  in inherit_event()
8693 static int inherit_group(struct perf_event *parent_event,  in inherit_group()  argument
8703 	leader = inherit_event(parent_event, parent, parent_ctx,  in inherit_group()
8707 	list_for_each_entry(sub, &parent_event->sibling_list, group_entry) {  in inherit_group()