BPF tracepoints

This set adds tracepoints to BPF for better introspection and debugging. The first two patches are prerequisite for the actual third patch that adds the tracepoints. I think the first two are small and straight forward enough that they could ideally go via net-next, but I'm also open to other suggestions on how to route them in case that's not applicable (it would reduce potential merge conflicts on BPF side, though). For details, please see individual patches.

Thanks a lot!

Daniel Borkmann (3):
trace: add variant without spacing in trace_print_hex_seq lib, traceevent: add PRINT_HEX_STR variant
bpf: add initial bpf tracepoints

 drivers/net/ethernet/mellanox/mlx4/en_rx.c         |   3 +
 drivers/net/ethernet/mellanox/mlx5/core/en_rx.c    |  12 +-
 .../net/ethernet/netronome/nfp/nfp_net_common.c    |  15 +-
 drivers/net/ethernet/qlogic/qede/qede_fp.c         |   4 +
 drivers/net/virtio_net.c                           |  12 +-
 include/linux/bpf_trace.h                          |   7 +
 include/linux/trace_events.h                       |   3 +-
 include/trace/events/bpf.h                         | 347 +++++++++++++++++++++
 include/trace/events/xdp.h                         |  53 ++++
 include/trace/trace_events.h                       |   8 +-
 kernel/bpf/core.c                                  |   9 +
 kernel/bpf/inode.c                                 |  17 +-
 kernel/bpf/syscall.c                               |  19 +-
 kernel/trace/trace_output.c                        |   7 +-
 tools/lib/traceevent/event-parse.c                 |  34 +-
 tools/lib/traceevent/event-parse.h                 |   1 +
 .../perf/util/scripting-engines/trace-event-perl.c |   1 +
 .../util/scripting-engines/trace-event-python.c    |   1 +
 18 files changed, 530 insertions(+), 23 deletions(-)
 create mode 100644 include/linux/bpf_trace.h
 create mode 100644 include/trace/events/bpf.h
 create mode 100644 include/trace/events/xdp.h

1.9.3