DTRACE_IO1
DTRACE_IO1(start, struct buf *, bp);
DTRACE_IO1(done, struct buf *, bp);
DTRACE_IO1(start, struct buf *, bp);
DTRACE_IO1(done, struct buf *, bp);
DTRACE_IO1(start, struct buf *, bp);
DTRACE_IO1(done, struct buf *, bp);
DTRACE_IO1(start, struct buf *, bp);
DTRACE_IO1(done, struct buf *, bp);
DTRACE_IO1(start, struct buf *, bp);
DTRACE_IO1(wait__start, struct buf *, bp);
DTRACE_IO1(wait__done, struct buf *, bp);
DTRACE_IO1(done, struct buf *, bp);
DTRACE_IO1(start, struct buf *, bp);
DTRACE_IO1(start, struct buf *, bp);
DTRACE_IO1(start, buf_t *, bufp);
DTRACE_IO1(done, buf_t *, bufp);
DTRACE_IO1(done, buf_t *, bufp);
DTRACE_IO1(done, buf_t *, bufp);
DTRACE_IO1(done, buf_t *, bufp);
DTRACE_IO1(done, buf_t *, buf);