no_op
{ "tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op,
tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, tar_trail,
static int no_op(void);
#define mutex_init(a, b, c) no_op()
#define mutex_destroy(a) no_op()
#define mutex_enter(l) no_op()
#define mutex_exit(l) no_op()
#define cv_wait(cv, lock) no_op()
#define cv_broadcast(cv) no_op()
#define cv_init(a, b) no_op()
#define cv_destroy(a) no_op()