[PATCH bpf-next v1 0/4] Modernize resolve_btfids selftest

[Ihor Solodrai <ihor.solodrai@linux.dev>]

This series updates resolve_btfids selftests to use latest selftest
helpers API and add kfunc set testing.

This series was split from a bigger series [1].  It's general selftest
improvements that don't have to be entangled with resolve_btfids
development, and makes the main series a bit smaller.

[1] https://lore.kernel.org/bpf/20260601221805.821394-1-ihor.solodrai@linux.dev/

Changes compared to original 4 patches:
  * various nits from Jiri, Andrii and Emil
  * in patch #3 (that adds gcc pragma) definitions are moved such that
    .local BTF_ID_* containers are grouped together and we have a
    single pragma scope

---

Ihor Solodrai (4):
  tools/bpf: Sync btf_ids.h to tools
  selftests/bpf: Modernize resolve_btfids test scaffolding
  selftests/bpf: Fix resolve_btfids test reads of BTF ID sets in PIE
    builds
  selftests/bpf: Add kfunc set test to resolve_btfids

 tools/include/linux/btf_ids.h                 |  78 +++++++++-
 .../selftests/bpf/prog_tests/resolve_btfids.c | 140 ++++++++++++------
 tools/testing/selftests/bpf/progs/btf_data.c  |  10 ++
 3 files changed, 177 insertions(+), 51 deletions(-)

-- 
2.54.0