From patchwork Sat Nov 25 19:31:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Olsa X-Patchwork-Id: 13468645 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0622B28E03 for ; Sat, 25 Nov 2023 19:31:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="dSHPiwbz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 91FB3C433C7; Sat, 25 Nov 2023 19:31:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1700940696; bh=lAmhvTMN4x46XnzKqzOmEHk7avh6GSgrgew1cc5WKbo=; h=From:To:Cc:Subject:Date:From; b=dSHPiwbzkkbwyGx3RgjRK4Xj250tHPZP0vRn4+LUp0PsJchbDbpLxE0/5bpq1M9KC baZlj46gR06TJXqSJYIpqgE/w7heGlRT7Jh3i+e7HysDVrS6LzmRRNaQ0e+2cJZCQB 8oXjKQvwS9+/V6jxp62Vo0EziGO7XPuETXZNgRieYXTLwjEYIUNOizlDpbvycvebBs uk+kGF9cw13IchMLC4mxtxDKFviDkgUJjZU3tdfYZQfJ8XyTK6QZFDU+xjHd548TLC 6+HWcbO3hHVKA4UQBlbeAipKPMDY02aMU1k1sQIXH87PodrMeLoLGhdlZuvlyfmCxj /Tybnuaz9DOXw== From: Jiri Olsa To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko Cc: bpf@vger.kernel.org, Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Yafang Shao Subject: [PATCHv4 bpf-next 0/6] bpf: Add link_info support for uprobe multi link Date: Sat, 25 Nov 2023 20:31:24 +0100 Message-ID: <20231125193130.834322-1-jolsa@kernel.org> X-Mailer: git-send-email 2.42.0 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: bpf@iogearbox.net hi, this patchset adds support to get bpf_link_info details for uprobe_multi links and adding support for bpftool link to display them. v4 changes: - move flags field up in bpf_uprobe_multi_link [Andrii] - include zero terminating byte in path_size [Andrii] - return d_path error directly [Yonghong] - use SEC(".probes") for semaphores [Yonghong] - fix ref_ctr_offsets leak in test [Yonghong] - other smaller fixes [Yonghong] thanks, jirka --- Jiri Olsa (6): libbpf: Add st_type argument to elf_resolve_syms_offsets function bpf: Store ref_ctr_offsets values in bpf_uprobe array bpf: Add link_info support for uprobe multi link selftests/bpf: Use bpf_link__destroy in fill_link_info tests selftests/bpf: Add link_info test for uprobe_multi link bpftool: Add support to display uprobe_multi links include/uapi/linux/bpf.h | 10 ++++ kernel/trace/bpf_trace.c | 86 ++++++++++++++++++++++++++++----- tools/bpf/bpftool/link.c | 105 +++++++++++++++++++++++++++++++++++++++- tools/include/uapi/linux/bpf.h | 10 ++++ tools/lib/bpf/elf.c | 5 +- tools/lib/bpf/libbpf.c | 2 +- tools/lib/bpf/libbpf_internal.h | 3 +- tools/testing/selftests/bpf/prog_tests/fill_link_info.c | 242 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------- tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c | 2 +- tools/testing/selftests/bpf/progs/test_fill_link_info.c | 6 +++ 10 files changed, 432 insertions(+), 39 deletions(-)