Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Alexei Starovoitov says:

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pull-request: bpf-next 2019-02-01

The following pull-request contains BPF updates for your *net-next* tree.

The main changes are:

1) introduce bpf_spin_lock, from Alexei.

2) convert xdp samples to libbpf, from Maciej.

3) skip verifier tests for unsupported program/map types, from Stanislav.

4) powerpc64 JIT support for BTF line info, from Sandipan.

5) assorted fixed, from Valdis, Jesper, Jiong.
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Signed-off-by: David S. Miller <davem@davemloft.net>