[PATCHv2 bpf-next 0/3] bpf: tracing_multi link info support

[Jiri Olsa <jolsa@kernel.org>]

hi,
adding link info support for tracing_multi link.

Adding the kernel support with related selftests and bpftool support
to display the tracing_multi link info, the output looks like:

  # bpftool link
  ...
  27: tracing_multi  prog 93
          attach_type trace_fentry_multi  obj_id 1  count 3
          btf_id           addr             cookie           func [module]
          91984            ffffffff824f4a24 a                bpf_fentry_test1
          91986            ffffffff824f6a84 1e               bpf_fentry_test2
          91987            ffffffff824f6a94 14               bpf_fentry_test3
          pids test_progs(1462)

thanks,
jirka


v1: https://lore.kernel.org/bpf/20260621204524.61067-1-jolsa@kernel.org/

v2 changes:
- fix kernel symbol search logic [sashiko]
- typo fixes [bots]


---
Jiri Olsa (3):
      bpf: Add tracing_multi link info support
      selftests/bpf: Add tracing_multi link info tests
      bpftool: Add tracing_multi link info output

 include/uapi/linux/bpf.h                                |   9 +++
 kernel/trace/bpf_trace.c                                |  55 +++++++++++++++++
 tools/bpf/bpftool/link.c                                | 137 +++++++++++++++++++++++++++++++++++++++++
 tools/include/uapi/linux/bpf.h                          |   9 +++
 tools/testing/selftests/bpf/prog_tests/fill_link_info.c | 242 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tools/testing/selftests/bpf/progs/test_fill_link_info.c |   6 ++
 6 files changed, 458 insertions(+)