linux-kernel - [RFC bpf-next 0/2] Print map ID on successful creation

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Message-ID: <20251028125705.3586552-1-harshit.m.mogalapalli@oracle.com>
Date: Tue, 28 Oct 2025 05:57:01 -0700
From: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
To: bpf@...r.kernel.org
Cc: alan.maguire@...cle.com,
        Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>,
        Quentin Monnet <qmo@...nel.org>, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>,
        Yonghong Song <yonghong.song@...ux.dev>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...ichev.me>,
        Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        Shuah Khan <shuah@...nel.org>, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Subject: [RFC bpf-next 0/2] Print map ID on successful creation

Hi all,

I have tried looking at an issue from the bpftool repository:
https://github.com/libbpf/bpftool/issues/121 and this RFC tries to add
that enhancement.

Summary: Currently when a map creation is successful there is no message
on the terminal, printing IDs on successful creation of maps can help
notify the user and can be used in CI/CD.

The first patch adds the logic for printing and the second patch adds a
simple selftest for the same.

The github issue is not fully solved with these two patches, as there
are other bpf objects that might need similar additions. Would
appreciate any inputs on this.

Thank you very much.

Regards,
Harshit

Harshit Mogalapalli (2):
  bpftool: Print map ID upon creation and support JSON output
  selftests/bpf: Add test for bpftool map ID printing

 tools/bpf/bpftool/map.c                       | 24 +++++++++++---
 .../testing/selftests/bpf/test_bpftool_map.sh | 32 +++++++++++++++++++
 2 files changed, 52 insertions(+), 4 deletions(-)

-- 
2.50.1