hi, this patchset adds support to get bpf_link_info details for uprobe_multi links and adding support for bpftool link to display them. v2 changes: - added acks - renamed path_max to path_size [Quentin] - don't fail when path_max is bigger PATH_MAX [Song] - asorted smaller fixes [Song,Andrii] - return pid in caller's namespace [Andrii] - use extra link fill_link_info tests [Andrii] thanks, jirka --- Jiri Olsa (6): libbpf: Add st_type argument to elf_resolve_syms_offsets function bpf: Store ref_ctr_offsets values in bpf_uprobe array bpf: Add link_info support for uprobe multi link selftests/bpf: Use bpf_link__destroy in fill_link_info tests selftests/bpf: Add link_info test for uprobe_multi link bpftool: Add support to display uprobe_multi links include/uapi/linux/bpf.h | 10 +++++ kernel/trace/bpf_trace.c | 83 +++++++++++++++++++++++++++++----- tools/bpf/bpftool/link.c | 105 ++++++++++++++++++++++++++++++++++++++++++- tools/include/uapi/linux/bpf.h | 10 +++++ tools/lib/bpf/elf.c | 5 ++- tools/lib/bpf/libbpf.c | 2 +- tools/lib/bpf/libbpf_internal.h | 3 +- tools/testing/selftests/bpf/prog_tests/fill_link_info.c | 223 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------- tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c | 2 +- tools/testing/selftests/bpf/progs/test_fill_link_info.c | 6 +++ 10 files changed, 410 insertions(+), 39 deletions(-)