266 	if (!event->parent) {  in event_function_call()
740 		for (css = &cgrp->css; css; css = css->parent) {  in update_cgrp_time_from_cpuctx()
784 	for (css = &cgrp->css; css; css = css->parent) {  in perf_cgroup_set_timestamp()
913 	for (heap_size = 1; css; css = css->parent)  in perf_cgroup_ensure_storage()
1410 	if (event->parent)  in perf_event_pid_type()
1411 		event = event->parent;  in perf_event_pid_type()
1438 	if (event->parent)  in primary_event_id()
1439 		id = event->parent->id;  in primary_event_id()
1658 	struct rb_node *parent;  in perf_event_groups_insert()  local
1664 	parent = *node;  in perf_event_groups_insert()
1667 		parent = *node;  in perf_event_groups_insert()
1671 			node = &parent->rb_left;  in perf_event_groups_insert()
1673 			node = &parent->rb_right;  in perf_event_groups_insert()
1676 	rb_link_node(&event->group_node, parent, node);  in perf_event_groups_insert()
3399 	struct perf_event_context *parent, *next_parent;  in perf_event_context_sched_out()  local
3417 	parent = rcu_dereference(ctx->parent_ctx);  in perf_event_context_sched_out()
3421 	if (!parent && !next_parent)  in perf_event_context_sched_out()
3424 	if (next_parent == ctx || next_ctx == parent || next_parent == parent) {  in perf_event_context_sched_out()
3680 	for (; css; css = css->parent)  in visit_groups_merge()
4687 	if (event->parent)  in is_sb_event()
4710 	if (event->parent)  in unaccount_event_cpu()
4743 	if (event->parent)  in unaccount_event()
4905 	if (!event->parent) {  in _free_event()
5184 	struct perf_event *sub, *parent;  in __perf_read_group_add()  local
5214 	parent = leader->parent;  in __perf_read_group_add()
5215 	if (parent &&  in __perf_read_group_add()
5216 	    (parent->group_generation != leader->group_generation ||  in __perf_read_group_add()
5217 	     parent->nr_siblings != leader->nr_siblings)) {  in __perf_read_group_add()
5880 	WARN_ON_ONCE(event->parent);  in ring_buffer_attach()
5939 	if (event->parent)  in ring_buffer_wakeup()
5940 		event = event->parent;  in ring_buffer_wakeup()
5955 	if (event->parent)  in ring_buffer_get()
5956 		event = event->parent;  in ring_buffer_get()
6375 	if (event->parent)  in perf_event_fasync()
6376 		event = event->parent;  in perf_event_fasync()
7533 	struct perf_event *parent = event->parent;  in __perf_event_output_stop()  local
7543 	if (!parent)  in __perf_event_output_stop()
7544 		parent = event;  in __perf_event_output_stop()
7556 	if (rcu_dereference(parent->rb) == rb)  in __perf_event_output_stop()
8891 	if (event->parent)  in perf_log_itrace_start()
8892 		event = event->parent;  in perf_log_itrace_start()
9392 	WARN_ON(event->parent);  in sw_perf_event_destroy()
9423 	if (!event->parent) {  in perf_swevent_init()
9458 	if (event->parent)  in perf_tp_filter_match()
9459 		event = event->parent;  in perf_tp_filter_match()
9990 	if (event->parent)  in perf_addr_filters_splice()
10305 	if (WARN_ON_ONCE(event->parent))  in perf_event_set_addr_filter()
11092 	if (event->parent && event->parent->pmu) {  in perf_init_event()
11093 		pmu = event->parent->pmu;  in perf_init_event()
11165 	if (event->parent)  in account_event_cpu()
11197 	if (event->parent)  in account_event()
11321 	event->parent		= parent_event;  in perf_event_alloc()
11434 		if (event->parent) {  in perf_event_alloc()
11439 			       event->parent->addr_filter_ranges,  in perf_event_alloc()
11448 	if (!event->parent) {  in perf_event_alloc()
11466 	if (!event->parent) {  in perf_event_alloc()
12394 	struct perf_event *parent_event = child_event->parent;  in sync_child_event()
12417 	struct perf_event *parent_event = child_event->parent;  in perf_event_exit_event()
12570 	struct perf_event *parent = event->parent;  in perf_free_event()  local
12572 	if (WARN_ON_ONCE(!parent))  in perf_free_event()
12575 	mutex_lock(&parent->child_mutex);  in perf_free_event()
12577 	mutex_unlock(&parent->child_mutex);  in perf_free_event()
12579 	put_event(parent);  in perf_free_event()
12691 	      struct task_struct *parent,  in inherit_event()  argument
12707 	if (parent_event->parent)  in inherit_event()
12708 		parent_event = parent_event->parent;  in inherit_event()
12805 	      struct task_struct *parent,  in inherit_group()  argument
12814 	leader = inherit_event(parent_event, parent, parent_ctx,  in inherit_group()
12824 		child_ctr = inherit_event(sub, parent, parent_ctx,  in inherit_group()
12849 inherit_task_group(struct perf_event *event, struct task_struct *parent,  in inherit_task_group()  argument
12877 	ret = inherit_group(event, parent, parent_ctx,  in inherit_task_group()
12894 	struct task_struct *parent = current;  in perf_event_init_context()  local
12899 	if (likely(!parent->perf_event_ctxp[ctxn]))  in perf_event_init_context()
12906 	parent_ctx = perf_pin_task_context(parent, ctxn);  in perf_event_init_context()
12928 		ret = inherit_task_group(event, parent, parent_ctx,  in perf_event_init_context()
12944 		ret = inherit_task_group(event, parent, parent_ctx,  in perf_event_init_context()