3229 	struct perf_event *child;  in perf_event_modify_attr()  local
3256 	list_for_each_entry(child, &event->child_list, child_list) {  in perf_event_modify_attr()
3257 		perf_event_modify_copy_attr(&child->attr, attr);  in perf_event_modify_attr()
3258 		err = func(child, attr);  in perf_event_modify_attr()
5149 	struct perf_event *child, *tmp;  in perf_event_release_kernel()  local
5185 	list_for_each_entry(child, &event->child_list, child_list) {  in perf_event_release_kernel()
5191 		ctx = READ_ONCE(child->ctx);  in perf_event_release_kernel()
5218 		if (tmp == child) {  in perf_event_release_kernel()
5219 			perf_remove_from_context(child, DETACH_GROUP);  in perf_event_release_kernel()
5220 			list_move(&child->child_list, &free_list);  in perf_event_release_kernel()
5235 	list_for_each_entry_safe(child, tmp, &free_list, child_list) {  in perf_event_release_kernel()
5236 		void *var = &child->ctx->refcount;  in perf_event_release_kernel()
5238 		list_del(&child->child_list);  in perf_event_release_kernel()
5239 		free_event(child);  in perf_event_release_kernel()
5266 	struct perf_event *child;  in __perf_event_read_value()  local
5282 	list_for_each_entry(child, &event->child_list, child_list) {  in __perf_event_read_value()
5283 		(void)perf_event_read(child, false);  in __perf_event_read_value()
5284 		total += perf_event_count(child);  in __perf_event_read_value()
5285 		*enabled += child->total_time_enabled;  in __perf_event_read_value()
5286 		*running += child->total_time_running;  in __perf_event_read_value()
5388 	struct perf_event *leader = event->group_leader, *child;  in perf_read_group()  local
5407 	list_for_each_entry(child, &leader->child_list, child_list) {  in perf_read_group()
5408 		ret = __perf_read_group_add(child, read_format, values);  in perf_read_group()
5567 	struct perf_event *child;  in perf_event_for_each_child()  local
5573 	list_for_each_entry(child, &event->child_list, child_list)  in perf_event_for_each_child()
5574 		func(child);  in perf_event_for_each_child()
12956 static void perf_event_exit_task_context(struct task_struct *child, int ctxn)  in perf_event_exit_task_context()  argument
12961 	WARN_ON_ONCE(child != current);  in perf_event_exit_task_context()
12963 	child_ctx = perf_pin_task_context(child, ctxn);  in perf_event_exit_task_context()
12991 	RCU_INIT_POINTER(child->perf_event_ctxp[ctxn], NULL);  in perf_event_exit_task_context()
13007 	perf_event_task(child, child_ctx, 0);  in perf_event_exit_task_context()
13023 void perf_event_exit_task(struct task_struct *child)  in perf_event_exit_task()  argument
13028 	mutex_lock(&child->perf_event_mutex);  in perf_event_exit_task()
13029 	list_for_each_entry_safe(event, tmp, &child->perf_event_list,  in perf_event_exit_task()
13040 	mutex_unlock(&child->perf_event_mutex);  in perf_event_exit_task()
13043 		perf_event_exit_task_context(child, ctxn);  in perf_event_exit_task()
13051 	perf_event_task(child, NULL, 0);  in perf_event_exit_task()
13180 	      struct task_struct *child,  in inherit_event()  argument
13199 					   child,  in inherit_event()
13295 	      struct task_struct *child,  in inherit_group()  argument
13303 				 child, NULL, child_ctx);  in inherit_group()
13313 					    child, leader, child_ctx);  in inherit_group()
13339 		   struct task_struct *child, int ctxn,  in inherit_task_group()  argument
13353 	child_ctx = child->perf_event_ctxp[ctxn];  in inherit_task_group()
13361 		child_ctx = alloc_perf_context(parent_ctx->pmu, child);  in inherit_task_group()
13365 		child->perf_event_ctxp[ctxn] = child_ctx;  in inherit_task_group()
13369 			    child, child_ctx);  in inherit_task_group()
13380 static int perf_event_init_context(struct task_struct *child, int ctxn,  in perf_event_init_context()  argument
13421 					 child, ctxn, clone_flags,  in perf_event_init_context()
13438 					 child, ctxn, clone_flags,  in perf_event_init_context()
13447 	child_ctx = child->perf_event_ctxp[ctxn];  in perf_event_init_context()
13481 int perf_event_init_task(struct task_struct *child, u64 clone_flags)  in perf_event_init_task()  argument
13485 	memset(child->perf_event_ctxp, 0, sizeof(child->perf_event_ctxp));  in perf_event_init_task()
13486 	mutex_init(&child->perf_event_mutex);  in perf_event_init_task()
13487 	INIT_LIST_HEAD(&child->perf_event_list);  in perf_event_init_task()
13490 		ret = perf_event_init_context(child, ctxn, clone_flags);  in perf_event_init_task()
13492 			perf_event_free_task(child);  in perf_event_init_task()