From patchwork Mon Mar 6 06:48:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Menglong Dong X-Patchwork-Id: 13160528 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5D711C678D4 for ; Mon, 6 Mar 2023 06:48:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229645AbjCFGs5 (ORCPT ); Mon, 6 Mar 2023 01:48:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58732 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229494AbjCFGs4 (ORCPT ); Mon, 6 Mar 2023 01:48:56 -0500 Received: from mail-pg1-x542.google.com (mail-pg1-x542.google.com [IPv6:2607:f8b0:4864:20::542]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 37C1F83E1; Sun, 5 Mar 2023 22:48:55 -0800 (PST) Received: by mail-pg1-x542.google.com with SMTP id h31so4877006pgl.6; Sun, 05 Mar 2023 22:48:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1678085335; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=eFHn5FfCLzXc2Zphnr99D4T7djusYGDgP5E+TmE5X9w=; b=hwfI/PoR3OCowF0hC6XGu7u3UjF3R0yxH+qvnJG/8wl1/Ea0AMk+bRwOM/wPuul/Py md27lKglZeoDlu9N5BwmftfOXWWIHw4NlwFOpU5K41k6TMgQSEaBHvnUTUQlHyWhDc2L yPt+gEDVtdp8ErkN3ZFeYYu1KgR+ouSSUpIx3LzW9BrokXlS1RUkulzIrF9LlhDwl/yE W4hr/eulkOxu52agwEyeAtVP7G6BFHKSN9+muKV9kyq2FTIJ1C95L8wJhvZmIqei+r3q GArGFNqusMujLWvOFz52CCjyeUqqQHpP+m6eh9gIMIeund5PqD2ubCER5WF0icFw/xQX uo2A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678085335; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=eFHn5FfCLzXc2Zphnr99D4T7djusYGDgP5E+TmE5X9w=; b=Ky/qihhwTG9pUUNtdfDCf4LQdoQ+sHT/TbIFmjc1+iZlxMUc2hOU/ljOnnvVudBhp6 /vdZTLYBP+IhErtv59rJeaf1aHNF3O7FrbDrf2HfnHj3O3eN4VjJZuQeLuaefM8xAdXV pp4UsHpgTnNuDwfotYf7ZNGquTI+dmtspXLDvUQ1sxJ8iKW5YrbFI4M7SjfunHESXsBw 1omwCvKDg+XbgnGVeb86GKpbz2+wwAYCW0AhT37AmiYj8UusIOGEkxMK7Qg/b8nmVtAj reXgj2u/3meCyjNQLuCw9d/bKDwGBGrNfasN2nU9ZPUeD6vEApX/V+MPVVaC1waxq+fl AbtQ== X-Gm-Message-State: AO0yUKU7p8nAo0ATh9Es9iol5RlMGpcrIsnMmmK//wbzySqeX38HfvR+ L9htqnFCYEpJ9WfYR5ppPS4= X-Google-Smtp-Source: AK7set8fUQTo3aQU4wb80VhcxZJw8dkeT2LDLmo0bJpZNpRAQhbOFvXZqxNnBm8o8R/BNUJYZXE+Sg== X-Received: by 2002:a62:4e43:0:b0:5a8:b649:99d4 with SMTP id c64-20020a624e43000000b005a8b64999d4mr9030345pfb.7.1678085334641; Sun, 05 Mar 2023 22:48:54 -0800 (PST) Received: from localhost.localdomain ([203.205.141.82]) by smtp.gmail.com with ESMTPSA id g9-20020aa78189000000b0061a942c8b62sm2378184pfi.43.2023.03.05.22.48.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Mar 2023 22:48:54 -0800 (PST) From: menglong8.dong@gmail.com X-Google-Original-From: imagedong@tencent.com To: andrii.nakryiko@gmail.com, alan.maguire@oracle.com Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, song@kernel.org, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, benbjiang@tencent.com, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, Menglong Dong Subject: [PATCH bpf-next v4 0/3] libbpf: allow users to set kprobe/uprobe attach mode Date: Mon, 6 Mar 2023 14:48:30 +0800 Message-Id: <20230306064833.7932-1-imagedong@tencent.com> X-Mailer: git-send-email 2.39.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net From: Menglong Dong By default, libbpf will attach the kprobe/uprobe BPF program in the latest mode that supported by kernel. In this series, we add the support to let users manually attach kprobe/uprobe in legacy/perf/link mode in the 1th patch. And in the 2th patch, we split the testing 'attach_probe' into multi subtests, as Andrii suggested. In the 3th patch, we add the testings for loading kprobe/uprobe in different mode. Changes since v3: - rename eBPF to BPF in the doc - use OPTS_GET() to get the value of 'force_ioctl_attach' - error out on attach mode is not supported - use test_attach_probe_manual__open_and_load() directly Changes since v2: - fix the typo in the 2th patch Changes since v1: - some small changes in the 1th patch, as Andrii suggested - split 'attach_probe' into multi subtests Menglong Dong (3): libbpf: add support to set kprobe/uprobe attach mode selftests/bpf: split test_attach_probe into multi subtests selftests/bpf: add test for legacy/perf kprobe/uprobe attach mode tools/lib/bpf/libbpf.c | 47 ++- tools/lib/bpf/libbpf.h | 31 +- .../selftests/bpf/prog_tests/attach_probe.c | 291 ++++++++++++------ .../bpf/progs/test_attach_kprobe_sleepable.c | 23 ++ .../selftests/bpf/progs/test_attach_probe.c | 35 +-- .../bpf/progs/test_attach_probe_manual.c | 53 ++++ 6 files changed, 347 insertions(+), 133 deletions(-) create mode 100644 tools/testing/selftests/bpf/progs/test_attach_kprobe_sleepable.c create mode 100644 tools/testing/selftests/bpf/progs/test_attach_probe_manual.c