More and more kfunc functions are being added to the kernel. Different prog types have different restrictions when using kfunc. Therefore, prog_kfunc probe is added to check whether it is supported, and the use of this api will be added to bpftool later. Change list: - v1 -> v2: - check unsupported prog type like probe_bpf_helper - add off parameter for module btf - chenk verifier info when kfunc id invalid Revisions: - v1 https://lore.kernel.org/bpf/20250122171359.232791-1-chen.dylane@xxxxxxxxx Tao Chen (2): libbpf: Add libbpf_probe_bpf_kfunc API selftests/bpf: Add libbpf_probe_bpf_kfunc API selftests tools/lib/bpf/libbpf.h | 17 ++++++- tools/lib/bpf/libbpf.map | 1 + tools/lib/bpf/libbpf_probes.c | 47 +++++++++++++++++++ .../selftests/bpf/prog_tests/libbpf_probes.c | 35 ++++++++++++++ 4 files changed, 99 insertions(+), 1 deletion(-) -- 2.43.0
