[PATCHv4 bpf-next 0/3] selftests/bpf: Add read_build_id function

[Jiri Olsa <jolsa@kernel.org>]

hi,
this selftests cleanup was previously posted as part of file build id changes [1],
which might take more time, so I'm sending the selftests changes separately so it
won't get stuck.

v4 changes:
  - added size argument to read_build_id [Andrii]
  - condition changes in parse_build_id_buf [Andrii]
  - use ELF_C_READ_MMAP in elf_begin [Andrii]
  - return -ENOENT in read_build_id if build id is not found [Andrii]
  - dropped elf class check [Andrii]

thanks,
jirka


[1] https://lore.kernel.org/bpf/20230316170149.4106586-1-jolsa@kernel.org/
---
Jiri Olsa (3):
      selftests/bpf: Add err.h header
      selftests/bpf: Add read_build_id function
      selftests/bpf: Replace extract_build_id with read_build_id

 tools/testing/selftests/bpf/prog_tests/stacktrace_build_id.c     | 19 +++++++------------
 tools/testing/selftests/bpf/prog_tests/stacktrace_build_id_nmi.c | 17 ++++++-----------
 tools/testing/selftests/bpf/progs/err.h                          | 18 ++++++++++++++++++
 tools/testing/selftests/bpf/progs/profiler.inc.h                 |  3 +--
 tools/testing/selftests/bpf/test_progs.c                         | 25 -------------------------
 tools/testing/selftests/bpf/test_progs.h                         |  1 -
 tools/testing/selftests/bpf/trace_helpers.c                      | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tools/testing/selftests/bpf/trace_helpers.h                      |  5 +++++
 8 files changed, 119 insertions(+), 51 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/progs/err.h