[PATCH bpf-next 0/8] bpf: Add cookies retrieval for perf/kprobe multi links

[Jiri Olsa <jolsa@kernel.org>]

hi,
this patchset adds support to retrieve cookies from existing tracing
links that still did not support it plus changes to bpftool to display
them. It's leftover we discussed some time ago [1].

thanks,
jirka


[1] https://lore.kernel.org/bpf/CALOAHbAZ6=A9j3VFCLoAC_WhgQKU7injMf06=cM2sU4Hi4Sx+Q@mail.gmail.com/
---
Jiri Olsa (8):
      bpf: Add cookie to perf_event bpf_link_info records
      bpf: Store cookies in kprobe_multi bpf_link_info data
      bpftool: Fix wrong free call in do_show_link
      selftests/bpf: Add cookies check for kprobe_multi fill_link_info test
      selftests/bpf: Add cookies check for perf_event fill_link_info test
      selftests/bpf: Add fill_link_info test for perf event
      bpftool: Display cookie for perf event link probes
      bpftool: Display cookie for kprobe multi link

 include/uapi/linux/bpf.h                                |   5 +++++
 kernel/bpf/syscall.c                                    |   4 ++++
 kernel/trace/bpf_trace.c                                |  15 +++++++++++++
 tools/bpf/bpftool/link.c                                |  87 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------
 tools/include/uapi/linux/bpf.h                          |   5 +++++
 tools/testing/selftests/bpf/prog_tests/fill_link_info.c | 114 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---------------
 tools/testing/selftests/bpf/progs/test_fill_link_info.c |   6 +++++
 7 files changed, 204 insertions(+), 32 deletions(-)