It's useful to do per-cpu histograms.
Suggested-by: NDaniel Wagner <daniel.wagner@bmw-carit.de>
Signed-off-by: NAlexei Starovoitov <ast@plumgrid.com>
Acked-by: NDaniel Borkmann <daniel@iogearbox.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>