566 	int trace_fd;  in __cmd_ftrace()  local
611 	trace_fd = open(trace_file, O_RDONLY);  in __cmd_ftrace()
615 	if (trace_fd < 0) {  in __cmd_ftrace()
620 	fcntl(trace_fd, F_SETFL, O_NONBLOCK);  in __cmd_ftrace()
621 	pollfd.fd = trace_fd;  in __cmd_ftrace()
648 			int n = read(trace_fd, buf, sizeof(buf));  in __cmd_ftrace()
670 		int n = read(trace_fd, buf, sizeof(buf));  in __cmd_ftrace()
678 	close(trace_fd);  in __cmd_ftrace()
880 	int trace_fd;  in __cmd_latency()  local
900 	trace_fd = prepare_func_latency(ftrace);  in __cmd_latency()
901 	if (trace_fd < 0)  in __cmd_latency()
904 	fcntl(trace_fd, F_SETFL, O_NONBLOCK);  in __cmd_latency()
905 	pollfd.fd = trace_fd;  in __cmd_latency()
918 			int n = read(trace_fd, buf, sizeof(buf) - 1);  in __cmd_latency()
936 		int n = read(trace_fd, buf, sizeof(buf) - 1);  in __cmd_latency()
947 	close(trace_fd);  in __cmd_latency()