[PATCH bpf-next v3 0/7] bpf: remove bpf_load loader completely

Numerous refactoring that rewrites BPF programs written with bpf_load
to use the libbpf loader was finally completed, resulting in BPF
programs using bpf_load within the kernel being completely no longer
present.

This patchset refactors remaining bpf programs with libbpf and
completely removes bpf_load, an outdated bpf loader that is difficult
to keep up with the latest kernel BPF and causes confusion.

Changes in v2:
 - drop 'move tracing helpers to trace_helper' patch
 - add link pinning to prevent cleaning up on process exit
 - add static at global variable and remove unused variable
 - change to destroy link even after link__pin()
 - fix return error code on exit
 - merge commit with changing Makefile

Changes in v3:
 - cleanup bpf_link, bpf_object and cgroup fd both on success and error

Daniel T. Lee (7):
  samples: bpf: refactor hbm program with libbpf
  samples: bpf: refactor test_cgrp2_sock2 program with libbpf
  samples: bpf: refactor task_fd_query program with libbpf
  samples: bpf: refactor ibumad program with libbpf
  samples: bpf: refactor test_overhead program with libbpf
  samples: bpf: fix lwt_len_hist reusing previous BPF map
  samples: bpf: remove bpf_load loader completely

 samples/bpf/.gitignore           |   3 +
 samples/bpf/Makefile             |  20 +-
 samples/bpf/bpf_load.c           | 667 -------------------------------
 samples/bpf/bpf_load.h           |  57 ---
 samples/bpf/do_hbm_test.sh       |  32 +-
 samples/bpf/hbm.c                | 111 ++---
 samples/bpf/hbm_kern.h           |   2 +-
 samples/bpf/ibumad_kern.c        |  26 +-
 samples/bpf/ibumad_user.c        |  71 +++-
 samples/bpf/lwt_len_hist.sh      |   2 +
 samples/bpf/task_fd_query_user.c | 101 +++--
 samples/bpf/test_cgrp2_sock2.c   |  61 ++-
 samples/bpf/test_cgrp2_sock2.sh  |  21 +-
 samples/bpf/test_lwt_bpf.sh      |   0
 samples/bpf/test_overhead_user.c |  82 ++--
 samples/bpf/xdp2skb_meta_kern.c  |   2 +-
 16 files changed, 350 insertions(+), 908 deletions(-)
 delete mode 100644 samples/bpf/bpf_load.c
 delete mode 100644 samples/bpf/bpf_load.h
 mode change 100644 => 100755 samples/bpf/lwt_len_hist.sh
 mode change 100644 => 100755 samples/bpf/test_lwt_bpf.sh

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2.25.1