3855 		struct perf_event *parent_event = event->parent;  in orphans_remove_work()  local
3862 		mutex_lock(&parent_event->child_mutex);  in orphans_remove_work()
3864 		mutex_unlock(&parent_event->child_mutex);  in orphans_remove_work()
3867 		put_event(parent_event);  in orphans_remove_work()
7849 		 struct perf_event *parent_event,  in perf_event_alloc()  argument
7897 	event->parent		= parent_event;  in perf_event_alloc()
7915 	if (parent_event)  in perf_event_alloc()
7916 		event->clock = parent_event->clock;  in perf_event_alloc()
7918 	if (!overflow_handler && parent_event) {  in perf_event_alloc()
7919 		overflow_handler = parent_event->overflow_handler;  in perf_event_alloc()
7920 		context = parent_event->overflow_handler_context;  in perf_event_alloc()
8749 	struct perf_event *parent_event = child_event->parent;  in sync_child_event()  local
8760 	atomic64_add(child_val, &parent_event->child_count);  in sync_child_event()
8762 		     &parent_event->child_total_time_enabled);  in sync_child_event()
8764 		     &parent_event->child_total_time_running);  in sync_child_event()
8769 	WARN_ON_ONCE(parent_event->ctx->parent_ctx);  in sync_child_event()
8770 	mutex_lock(&parent_event->child_mutex);  in sync_child_event()
8772 	mutex_unlock(&parent_event->child_mutex);  in sync_child_event()
8778 	perf_event_wakeup(parent_event);  in sync_child_event()
8784 	put_event(parent_event);  in sync_child_event()
9020 inherit_event(struct perf_event *parent_event,  in inherit_event()  argument
9027 	enum perf_event_active_state parent_state = parent_event->state;  in inherit_event()
9037 	if (parent_event->parent)  in inherit_event()
9038 		parent_event = parent_event->parent;  in inherit_event()
9040 	child_event = perf_event_alloc(&parent_event->attr,  in inherit_event()
9041 					   parent_event->cpu,  in inherit_event()
9043 					   group_leader, parent_event,  in inherit_event()
9048 	if (is_orphaned_event(parent_event) ||  in inherit_event()
9049 	    !atomic_long_inc_not_zero(&parent_event->refcount)) {  in inherit_event()
9066 	if (parent_event->attr.freq) {  in inherit_event()
9067 		u64 sample_period = parent_event->hw.sample_period;  in inherit_event()
9077 	child_event->overflow_handler = parent_event->overflow_handler;  in inherit_event()
9079 		= parent_event->overflow_handler_context;  in inherit_event()
9097 	WARN_ON_ONCE(parent_event->ctx->parent_ctx);  in inherit_event()
9098 	mutex_lock(&parent_event->child_mutex);  in inherit_event()
9099 	list_add_tail(&child_event->child_list, &parent_event->child_list);  in inherit_event()
9100 	mutex_unlock(&parent_event->child_mutex);  in inherit_event()
9105 static int inherit_group(struct perf_event *parent_event,  in inherit_group()  argument
9115 	leader = inherit_event(parent_event, parent, parent_ctx,  in inherit_group()
9119 	list_for_each_entry(sub, &parent_event->sibling_list, group_entry) {  in inherit_group()