trace_seq_putmem
extern void trace_seq_putmem(struct trace_seq *s, const void *mem, unsigned int len);
trace_seq_putmem(s, pdu_start(ent, has_cg),
trace_seq_putmem(s, &old, offset);
trace_seq_putmem(s, &t->sector,
trace_seq_putmem(s, &(x), sizeof(x))
EXPORT_SYMBOL_GPL(trace_seq_putmem);