Hi, This series adds an option to bpftool to make it print additional information via libbpf and the kernel verifier when attempting to load programs. A new API function is added to libbpf in order to pass the log_level from bpftool with the bpf_object__* part of the API. Options for a finer control over the log levels to use for libbpf and the verifier could be added in the future, if desired. v3: - Fix and clarify commit logs. v2: - Do not add distinct options for libbpf and verifier logs, just keep the one that sets all log levels to their maximum. Rename the option. - Do not offer a way to pick desired log levels. The choice is "use the option to print all logs" or "stick with the defaults". - Do not export BPF_LOG_* flags to user header. - Update all man pages (most bpftool operations use libbpf and may print libbpf logs). Verifier logs are only used when attempting to load programs for now, so bpftool-prog.rst and bpftool.rst remain the only pages updated in that regard. Previous discussion available at: https://lore.kernel.org/bpf/20190523105426.3938-1-quentin.monnet@xxxxxxxxxxxxx/ https://lore.kernel.org/bpf/20190429095227.9745-1-quentin.monnet@xxxxxxxxxxxxx/ Quentin Monnet (3): tools: bpftool: add -d option to get debug output from libbpf libbpf: add bpf_object__load_xattr() API function to pass log_level tools: bpftool: make -d option print debug output from verifier .../bpf/bpftool/Documentation/bpftool-btf.rst | 4 +++ .../bpftool/Documentation/bpftool-cgroup.rst | 4 +++ .../bpftool/Documentation/bpftool-feature.rst | 4 +++ .../bpf/bpftool/Documentation/bpftool-map.rst | 4 +++ .../bpf/bpftool/Documentation/bpftool-net.rst | 4 +++ .../bpftool/Documentation/bpftool-perf.rst | 4 +++ .../bpftool/Documentation/bpftool-prog.rst | 5 ++++ tools/bpf/bpftool/Documentation/bpftool.rst | 4 +++ tools/bpf/bpftool/bash-completion/bpftool | 2 +- tools/bpf/bpftool/main.c | 16 ++++++++++- tools/bpf/bpftool/main.h | 1 + tools/bpf/bpftool/prog.c | 27 ++++++++++++------- tools/lib/bpf/Makefile | 2 +- tools/lib/bpf/libbpf.c | 20 +++++++++++--- tools/lib/bpf/libbpf.h | 6 +++++ tools/lib/bpf/libbpf.map | 5 ++++ 16 files changed, 96 insertions(+), 16 deletions(-) -- 2.17.1
