sata_trace_rbuf_t
sata_trace_rbuf_t rbuf;
sata_trace_rbuf_t rbuf;
if (mdb_vread(&rbuf, sizeof (sata_trace_rbuf_t), rbuf_addr)
sata_debug_rbuf = kmem_zalloc(sizeof (sata_trace_rbuf_t), KM_SLEEP);
kmem_free(sata_debug_rbuf, sizeof (sata_trace_rbuf_t));
static sata_trace_rbuf_t *sata_debug_rbuf;