[PATCHv2 0/3] bpf: Store/dump license string for loaded program

[Jiri Olsa]

hi,
sending the change to store and dump the license
info for loaded BPF programs. It's important for
us get the license info, when investigating on
screwed up machine.

v2 changes:
  - dumping only the GPL compatible bool, without
    storing the whole license string

Adding change to bpftool to dump the license GPL
compatible info via:

  # bpftool prog list
  3: kprobe  name func_begin  tag 57cd311f2e27366b license GPL NON compatible
          loaded_at Apr 25/11:20  uid 0
          xlated 16B  not jited  memlock 4096B

  # bpftool prog list
  4: kprobe  name func_begin  tag 57cd311f2e27366b license GPL compatible
          loaded_at Apr 25/11:20  uid 0
          xlated 16B  not jited  memlock 4096B

  # bpftool prog show --json
  [{"id":3,"type":"kprobe","name":"func ... ,"gpl_compatible":false,"loade...

Also available at:
  https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
  bpf/license

thanks,
jirka


---
Jiri Olsa (3):
      bpf: Add gpl_compatible flag to struct bpf_prog_info
      tools bpf: Sync bpf.h uapi header
      tools bpftool: Display license GPL compatible in prog show/list

 include/uapi/linux/bpf.h       | 1 +
 kernel/bpf/syscall.c           | 1 +
 tools/bpf/bpftool/prog.c       | 3 +++
 tools/include/uapi/linux/bpf.h | 1 +
 4 files changed, 6 insertions(+)