Merge branch 'bpf-add-cookies-retrieval-for-perf-kprobe-multi-links'

Jiri Olsa says:

====================
bpf: Add cookies retrieval for perf/kprobe multi links

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

v2 changes:
 - added review/ack tags
 - fixed memory leak [Quentin]
 - align the uapi fields properly [Yafang Shao]

[1] https://lore.kernel.org/bpf/CALOAHbAZ6=A9j3VFCLoAC_WhgQKU7injMf06=cM2sU4Hi4Sx+Q@mail.gmail.com/
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
---
====================

Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/r/20240119110505.400573-1-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>