disable rt lock
no arp lock
no timer lock
get rid of unnecessary recursive locking
disable routing lock

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
mempool: remove contention inside unfill_page_buffer()

This change reduces page buffer pressure caused by virtio-net
allocations, showign up as contention inside unfill_page_buffer() and
refill_page_buffer(). The virtio-net subsystem allocates pages on one
CPU which are then scattered across all other CPUs and freed to their
per-CPU buffers. To mitigate that, this change enables caching of
pages used by virtio-net.
Merge pull request #325 from tgrabiec/hacks

Some extra special quality hacks