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Merge branch 'bpf-tracing_multi-link-info-support'

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Jiri Olsa says:

====================
bpf: tracing_multi link info support

hi,
adding link info support for tracing_multi link.

Adding the kernel support with related selftests and bpftool support
to display the tracing_multi link info, the output looks like:

  # bpftool link
  ...
  61: tracing_multi  prog 167
          attach_type trace_fentry_multi  btf_obj_id 1  count 3
          btf_id           addr             cookie           func [module]
          92598            ffffffff825017c4 10               bpf_fentry_test1
          92600            ffffffff82503814 30               bpf_fentry_test2
          92601            ffffffff82503824 20               bpf_fentry_test3
          pids test_progs(1540)

thanks,
jirka

v1: https://lore.kernel.org/bpf/20260621204524.61067-1-jolsa@kernel.org/
v2: https://lore.kernel.org/bpf/20260623142417.275892-1-jolsa@kernel.org/
v3: https://lore.kernel.org/bpf/20260629143844.862369-1-jolsa@kernel.org/

v4 changes:
- fix wrong allocation check [Alexei]

v3 changes:
- added acks [Andrii, Leon]
- display cookies as decimal numbers [Andrii]
- renamed obj_id to btf_obj_id [Andrii]
- several fixes in bpftool change [Andrii]

v2 changes:
- fix kernel symbol search logic [sashiko]
- typo fixes [bots]
---
====================

Link: https://patch.msgid.link/20260629212208.895962-1-jolsa@kernel.org
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
This commit is contained in:
Andrii Nakryiko 2026-07-01 12:44:13 -07:00
commit c4082e93d9
6 changed files with 454 additions and 0 deletions
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