3297 	struct perf_event *child;  in perf_event_modify_attr()  local
3324 	list_for_each_entry(child, &event->child_list, child_list) {  in perf_event_modify_attr()
3325 		perf_event_modify_copy_attr(&child->attr, attr);  in perf_event_modify_attr()
3326 		err = func(child, attr);  in perf_event_modify_attr()
5230 	struct perf_event *child, *tmp;  in perf_event_release_kernel()  local
5266 	list_for_each_entry(child, &event->child_list, child_list) {  in perf_event_release_kernel()
5272 		ctx = READ_ONCE(child->ctx);  in perf_event_release_kernel()
5299 		if (tmp == child) {  in perf_event_release_kernel()
5300 			perf_remove_from_context(child, DETACH_GROUP);  in perf_event_release_kernel()
5301 			list_move(&child->child_list, &free_list);  in perf_event_release_kernel()
5316 	list_for_each_entry_safe(child, tmp, &free_list, child_list) {  in perf_event_release_kernel()
5317 		void *var = &child->ctx->refcount;  in perf_event_release_kernel()
5319 		list_del(&child->child_list);  in perf_event_release_kernel()
5320 		free_event(child);  in perf_event_release_kernel()
5347 	struct perf_event *child;  in __perf_event_read_value()  local
5363 	list_for_each_entry(child, &event->child_list, child_list) {  in __perf_event_read_value()
5364 		(void)perf_event_read(child, false);  in __perf_event_read_value()
5365 		total += perf_event_count(child);  in __perf_event_read_value()
5366 		*enabled += child->total_time_enabled;  in __perf_event_read_value()
5367 		*running += child->total_time_running;  in __perf_event_read_value()
5465 	struct perf_event *leader = event->group_leader, *child;  in perf_read_group()  local
5484 	list_for_each_entry(child, &leader->child_list, child_list) {  in perf_read_group()
5485 		ret = __perf_read_group_add(child, read_format, values);  in perf_read_group()
5642 	struct perf_event *child;  in perf_event_for_each_child()  local
5648 	list_for_each_entry(child, &event->child_list, child_list)  in perf_event_for_each_child()
5649 		func(child);  in perf_event_for_each_child()
12945 static void perf_event_exit_task_context(struct task_struct *child, int ctxn)  in perf_event_exit_task_context()  argument
12950 	WARN_ON_ONCE(child != current);  in perf_event_exit_task_context()
12952 	child_ctx = perf_pin_task_context(child, ctxn);  in perf_event_exit_task_context()
12980 	RCU_INIT_POINTER(child->perf_event_ctxp[ctxn], NULL);  in perf_event_exit_task_context()
12996 	perf_event_task(child, child_ctx, 0);  in perf_event_exit_task_context()
13012 void perf_event_exit_task(struct task_struct *child)  in perf_event_exit_task()  argument
13017 	mutex_lock(&child->perf_event_mutex);  in perf_event_exit_task()
13018 	list_for_each_entry_safe(event, tmp, &child->perf_event_list,  in perf_event_exit_task()
13029 	mutex_unlock(&child->perf_event_mutex);  in perf_event_exit_task()
13032 		perf_event_exit_task_context(child, ctxn);  in perf_event_exit_task()
13040 	perf_event_task(child, NULL, 0);  in perf_event_exit_task()
13169 	      struct task_struct *child,  in inherit_event()  argument
13188 					   child,  in inherit_event()
13284 	      struct task_struct *child,  in inherit_group()  argument
13292 				 child, NULL, child_ctx);  in inherit_group()
13302 					    child, leader, child_ctx);  in inherit_group()
13328 		   struct task_struct *child, int ctxn,  in inherit_task_group()  argument
13342 	child_ctx = child->perf_event_ctxp[ctxn];  in inherit_task_group()
13350 		child_ctx = alloc_perf_context(parent_ctx->pmu, child);  in inherit_task_group()
13354 		child->perf_event_ctxp[ctxn] = child_ctx;  in inherit_task_group()
13358 			    child, child_ctx);  in inherit_task_group()
13369 static int perf_event_init_context(struct task_struct *child, int ctxn,  in perf_event_init_context()  argument
13410 					 child, ctxn, clone_flags,  in perf_event_init_context()
13427 					 child, ctxn, clone_flags,  in perf_event_init_context()
13436 	child_ctx = child->perf_event_ctxp[ctxn];  in perf_event_init_context()
13470 int perf_event_init_task(struct task_struct *child, u64 clone_flags)  in perf_event_init_task()  argument
13474 	memset(child->perf_event_ctxp, 0, sizeof(child->perf_event_ctxp));  in perf_event_init_task()
13475 	mutex_init(&child->perf_event_mutex);  in perf_event_init_task()
13476 	INIT_LIST_HEAD(&child->perf_event_list);  in perf_event_init_task()
13479 		ret = perf_event_init_context(child, ctxn, clone_flags);  in perf_event_init_task()
13481 			perf_event_free_task(child);  in perf_event_init_task()