59 ftrace_push_return_trace(unsigned long ret, unsigned long func,  in ftrace_push_return_trace()  argument
87 	current->ret_stack[index].ret = ret;  in ftrace_push_return_trace()
99 int function_graph_enter(unsigned long ret, unsigned long func,  in function_graph_enter()  argument
107 	if (ftrace_push_return_trace(ret, func, frame_pointer, retp))  in function_graph_enter()
124 ftrace_pop_return_trace(struct ftrace_graph_ret *trace, unsigned long *ret,  in ftrace_pop_return_trace()  argument
135 		*ret = (unsigned long)panic;  in ftrace_pop_return_trace()
161 		     current->ret_stack[index].ret);  in ftrace_pop_return_trace()
162 		*ret = (unsigned long)panic;  in ftrace_pop_return_trace()
167 	*ret = current->ret_stack[index].ret;  in ftrace_pop_return_trace()
212 	unsigned long ret;  in ftrace_return_to_handler()  local
214 	ftrace_pop_return_trace(&trace, &ret, frame_pointer);  in ftrace_return_to_handler()
225 	if (unlikely(!ret)) {  in ftrace_return_to_handler()
229 		ret = (unsigned long)panic;  in ftrace_return_to_handler()
232 	return ret;  in ftrace_return_to_handler()
274 				    unsigned long ret, unsigned long *retp)  in ftrace_graph_ret_addr()  argument
279 	if (ret != (unsigned long)dereference_kernel_function_descriptor(return_to_handler))  in ftrace_graph_ret_addr()
280 		return ret;  in ftrace_graph_ret_addr()
283 		return ret;  in ftrace_graph_ret_addr()
287 			return task->ret_stack[i].ret;  in ftrace_graph_ret_addr()
289 	return ret;  in ftrace_graph_ret_addr()
293 				    unsigned long ret, unsigned long *retp)  in ftrace_graph_ret_addr()  argument
297 	if (ret != (unsigned long)dereference_kernel_function_descriptor(return_to_handler))  in ftrace_graph_ret_addr()
298 		return ret;  in ftrace_graph_ret_addr()
303 		return ret;  in ftrace_graph_ret_addr()
308 	return task->ret_stack[task_idx].ret;  in ftrace_graph_ret_addr()
345 	int ret = 0;  in alloc_retstack_tasklist()  local
357 			ret = -ENOMEM;  in alloc_retstack_tasklist()
365 			ret = -EAGAIN;  in alloc_retstack_tasklist()
385 	return ret;  in alloc_retstack_tasklist()
540 	int ret, cpu;  in start_graph_tracing()  local
556 		ret = alloc_retstack_tasklist(ret_stack_list);  in start_graph_tracing()
557 	} while (ret == -EAGAIN);  in start_graph_tracing()
559 	if (!ret) {  in start_graph_tracing()
560 		ret = register_trace_sched_switch(ftrace_graph_probe_sched_switch, NULL);  in start_graph_tracing()
561 		if (ret)  in start_graph_tracing()
567 	return ret;  in start_graph_tracing()
572 	int ret = 0;  in register_ftrace_graph()  local
578 		ret = -EBUSY;  in register_ftrace_graph()
585 	ret = start_graph_tracing();  in register_ftrace_graph()
586 	if (ret) {  in register_ftrace_graph()
603 	ret = ftrace_startup(&graph_ops, FTRACE_START_FUNC_RET);  in register_ftrace_graph()
606 	return ret;  in register_ftrace_graph()