trace_print_seq
extern int trace_print_seq(struct seq_file *m, struct trace_seq *s);
trace_print_seq(m, &s);
trace_print_seq(m, &iter->seq);
trace_print_seq(m, &iter->seq);
ret = trace_print_seq(m, &iter->seq);
ret = trace_print_seq(m, &iter->seq);
ret = trace_print_seq(m, tseq);
return trace_print_seq(m, &iter->seq);