DTRACEBUF_INACTIVE
buf->dtb_flags &= ~DTRACEBUF_INACTIVE;
if (buf->dtb_flags & DTRACEBUF_INACTIVE)
flags |= DTRACEBUF_INACTIVE;
ASSERT(state->dts_buffer[*cpu].dtb_flags & DTRACEBUF_INACTIVE);
state->dts_buffer[*cpu].dtb_flags &= ~DTRACEBUF_INACTIVE;