SLHCI_DEXEC
SLHCI_DEXEC(D_TRACE, slhci_log_req(req));
#define DLOG(x, f, a, b, c, d) SLHCI_DEXEC(x, DDOLOG(f, a, b, c, d))
#define DLOGBUF(x, b, l) SLHCI_DEXEC(x, DDOLOGBUF(b, l))
SLHCI_DEXEC(D_TRACE, slhci_log_xfer(xfer));