271 	if (!event->parent) {  in event_function_call()
771 		for (css = &cgrp->css; css; css = css->parent) {  in update_cgrp_time_from_cpuctx()
822 	for (css = &cgrp->css; css; css = css->parent) {  in perf_cgroup_set_timestamp()
952 	for (heap_size = 1; css; css = css->parent)  in perf_cgroup_ensure_storage()
1442 	if (event->parent)  in perf_event_pid_type()
1443 		event = event->parent;  in perf_event_pid_type()
1470 	if (event->parent)  in primary_event_id()
1471 		id = event->parent->id;  in primary_event_id()
2298 	struct perf_event *parent_event = event->parent;  in perf_child_detach()
3517 	struct perf_event_context *parent, *next_parent;  in perf_event_context_sched_out()  local
3535 	parent = rcu_dereference(ctx->parent_ctx);  in perf_event_context_sched_out()
3539 	if (!parent && !next_parent)  in perf_event_context_sched_out()
3542 	if (next_parent == ctx || next_ctx == parent || next_parent == parent) {  in perf_event_context_sched_out()
3811 	for (; css; css = css->parent)  in visit_groups_merge()
4895 	if (event->parent)  in is_sb_event()
4918 	if (event->parent)  in unaccount_event_cpu()
4951 	if (event->parent)  in unaccount_event()
5115 	if (!event->parent) {  in _free_event()
5391 	struct perf_event *sub, *parent;  in __perf_read_group_add()  local
5421 	parent = leader->parent;  in __perf_read_group_add()
5422 	if (parent &&  in __perf_read_group_add()
5423 	    (parent->group_generation != leader->group_generation ||  in __perf_read_group_add()
5424 	     parent->nr_siblings != leader->nr_siblings)) {  in __perf_read_group_add()
6089 	WARN_ON_ONCE(event->parent);  in ring_buffer_attach()
6148 	if (event->parent)  in ring_buffer_wakeup()
6149 		event = event->parent;  in ring_buffer_wakeup()
6164 	if (event->parent)  in ring_buffer_get()
6165 		event = event->parent;  in ring_buffer_get()
6583 	if (event->parent)  in perf_event_fasync()
6584 		event = event->parent;  in perf_event_fasync()
7912 	struct perf_event *parent = event->parent;  in __perf_event_output_stop()  local
7922 	if (!parent)  in __perf_event_output_stop()
7923 		parent = event;  in __perf_event_output_stop()
7935 	if (rcu_dereference(parent->rb) == rb)  in __perf_event_output_stop()
9283 	if (event->parent)  in perf_log_itrace_start()
9284 		event = event->parent;  in perf_log_itrace_start()
9810 	WARN_ON(event->parent);  in sw_perf_event_destroy()
9841 	if (!event->parent) {  in perf_swevent_init()
9876 	if (event->parent)  in perf_tp_filter_match()
9877 		event = event->parent;  in perf_tp_filter_match()
10401 	if (event->parent)  in perf_addr_filters_splice()
10716 	if (WARN_ON_ONCE(event->parent))  in perf_event_set_addr_filter()
11504 	if (event->parent && event->parent->pmu) {  in perf_init_event()
11505 		pmu = event->parent->pmu;  in perf_init_event()
11589 	if (event->parent)  in account_event_cpu()
11621 	if (event->parent)  in account_event()
11754 	event->parent		= parent_event;  in perf_event_alloc()
11870 		if (event->parent) {  in perf_event_alloc()
11875 			       event->parent->addr_filter_ranges,  in perf_event_alloc()
11884 	if (!event->parent) {  in perf_event_alloc()
11902 	if (!event->parent) {  in perf_event_alloc()
12873 	struct perf_event *parent_event = child_event->parent;  in sync_child_event()
12898 	struct perf_event *parent_event = event->parent;  in perf_event_exit_event()
13046 	struct perf_event *parent = event->parent;  in perf_free_event()  local
13048 	if (WARN_ON_ONCE(!parent))  in perf_free_event()
13051 	mutex_lock(&parent->child_mutex);  in perf_free_event()
13053 	mutex_unlock(&parent->child_mutex);  in perf_free_event()
13055 	put_event(parent);  in perf_free_event()
13167 	      struct task_struct *parent,  in inherit_event()  argument
13183 	if (parent_event->parent)  in inherit_event()
13184 		parent_event = parent_event->parent;  in inherit_event()
13282 	      struct task_struct *parent,  in inherit_group()  argument
13291 	leader = inherit_event(parent_event, parent, parent_ctx,  in inherit_group()
13301 		child_ctr = inherit_event(sub, parent, parent_ctx,  in inherit_group()
13326 inherit_task_group(struct perf_event *event, struct task_struct *parent,  in inherit_task_group()  argument
13357 	ret = inherit_group(event, parent, parent_ctx,  in inherit_task_group()
13375 	struct task_struct *parent = current;  in perf_event_init_context()  local
13380 	if (likely(!parent->perf_event_ctxp[ctxn]))  in perf_event_init_context()
13387 	parent_ctx = perf_pin_task_context(parent, ctxn);  in perf_event_init_context()
13409 		ret = inherit_task_group(event, parent, parent_ctx,  in perf_event_init_context()
13426 		ret = inherit_task_group(event, parent, parent_ctx,  in perf_event_init_context()