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Wed, 24 Jun 2026 02:29:20 -0700 (PDT) From: Jiri Olsa X-Google-Original-From: Jiri Olsa Date: Wed, 24 Jun 2026 11:29:19 +0200 To: Andrii Nakryiko Cc: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , bpf@vger.kernel.org, Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , Quentin Monnet Subject: Re: [PATCHv2 bpf-next 0/3] bpf: tracing_multi link info support Message-ID: References: <20260623142417.275892-1-jolsa@kernel.org> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Tue, Jun 23, 2026 at 01:51:29PM -0700, Andrii Nakryiko wrote: > On Tue, Jun 23, 2026 at 7:24 AM Jiri Olsa wrote: > > > > 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 > > ... > > 27: tracing_multi prog 93 > > attach_type trace_fentry_multi obj_id 1 count 3 > > btf_id addr cookie func [module] > > 91984 ffffffff824f4a24 a bpf_fentry_test1 > > 91986 ffffffff824f6a84 1e bpf_fentry_test2 > > 91987 ffffffff824f6a94 14 bpf_fentry_test3 > > kernel's bpf_tracing_link_show_fdinfo() emits cookie as decimal > number, why go with hex here? true, will switch to dec, thanks jirka > > > pids test_progs(1462) > > > > thanks, > > jirka > > > > > > v1: https://lore.kernel.org/bpf/20260621204524.61067-1-jolsa@kernel.org/ > > > > v2 changes: > > - fix kernel symbol search logic [sashiko] > > - typo fixes [bots] > > > > > > --- > > Jiri Olsa (3): > > bpf: Add tracing_multi link info support > > selftests/bpf: Add tracing_multi link info tests > > bpftool: Add tracing_multi link info output > > > > include/uapi/linux/bpf.h | 9 +++ > > kernel/trace/bpf_trace.c | 55 +++++++++++++++++ > > tools/bpf/bpftool/link.c | 137 +++++++++++++++++++++++++++++++++++++++++ > > tools/include/uapi/linux/bpf.h | 9 +++ > > tools/testing/selftests/bpf/prog_tests/fill_link_info.c | 242 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > tools/testing/selftests/bpf/progs/test_fill_link_info.c | 6 ++ > > 6 files changed, 458 insertions(+)