From patchwork Sat May 6 03:15:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Feng Zhou X-Patchwork-Id: 13233265 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 C5735C77B7C for ; Sat, 6 May 2023 03:16:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229742AbjEFDQB (ORCPT ); Fri, 5 May 2023 23:16:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35786 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229460AbjEFDQA (ORCPT ); Fri, 5 May 2023 23:16:00 -0400 Received: from mail-pf1-x434.google.com (mail-pf1-x434.google.com [IPv6:2607:f8b0:4864:20::434]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AB0697AB8 for ; Fri, 5 May 2023 20:15:58 -0700 (PDT) Received: by mail-pf1-x434.google.com with SMTP id d2e1a72fcca58-64115eef620so23644491b3a.1 for ; Fri, 05 May 2023 20:15:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1683342958; x=1685934958; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=0458uXF9RUz5p6djNQUrV1kPPJP26SNua7MTT7E+jsc=; b=ah4y2BIozBAxspMXaFJpgiDEb9vP5JX7cXug6SoTtI1q35VtGELqCkcK22wupB2LTn rFlXA5OtysZmdrni+jZjZJbkegVrSvCMi3Pzd4ilCJ94XUVOmQjsktn4aJ7FmbfKvQju 1KetyAbtvoy2iBX0pgCFL07tWfLyatxkynYL8ldrjnLJCVQwb7Q9feYEvRPHWMZu/2yd dilSkSgXPiFYoKbGmzaGXEuhoY3dEM/eRaxJGdcWCwmbQTwlHVSmJnfLZUXDGVfGMD6O ER1DK0eHWCfT2iqc/C7gNkAlYzhsEZAJVT9OQ2jPrvvHFRdfsdmQXSkRbzovbEMV9HJp LGkA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683342958; x=1685934958; 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=0458uXF9RUz5p6djNQUrV1kPPJP26SNua7MTT7E+jsc=; b=U+rwpKsPnHOpj7NsVBld8b2Si9EDSl3wQSVo+2besSxC9uBliWym4gXIh/22MjI+Q3 e9BKOq/yetA+0IjLwNRHmpx54ZjZFv/kZW0CvGmVSWtFfJpNuGOZjPZ58s/ppsRwMf2h YjUej6nVNVpuMXHzgDrdvH85dLwGu0vox7eqigBuSPQ4Kq5N89HiGNTkHlTQ7eQmHkT/ WyGktzfjpCbifFiFCcGwTyZ0Bbnu0M3gBWxYcKYMvLJM1ndMSTCu1WTlaLuF4qAGmWAi ZpSWuHcAdMru5/jwo7toskUOmvOdf/D56CQCn3FWMmGO7P42LwPQHhpLvz078k+Mq4jt B1TQ== X-Gm-Message-State: AC+VfDytnPyBwnCS/1uQqewyv84XCpJW0Pj+CZen2h6fe8Z3R3BbisK5 j9dF2khy2Xbn4CvKkfguLMAAhg== X-Google-Smtp-Source: ACHHUZ6x3RXr+FRSOEa6ajuOd5q+SCqgNp5dyJfTZ6LVau6mi9v4AwFmvAli3FqgzM3yIg8OKhHanQ== X-Received: by 2002:a05:6a00:1f10:b0:63f:32ed:92b1 with SMTP id be16-20020a056a001f1000b0063f32ed92b1mr8660432pfb.7.1683342958117; Fri, 05 May 2023 20:15:58 -0700 (PDT) Received: from C02F52LSML85.bytedance.net ([139.177.225.238]) by smtp.gmail.com with ESMTPSA id j1-20020aa783c1000000b0063a1e7d7439sm2256663pfn.69.2023.05.05.20.15.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 May 2023 20:15:57 -0700 (PDT) From: Feng zhou To: martin.lau@linux.dev, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, song@kernel.org, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, mykolal@fb.com, shuah@kernel.org Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, yangzhenze@bytedance.com, wangdongdong.6@bytedance.com, zhoufeng.zf@bytedance.com Subject: [PATCH bpf-next v7 0/2] Introduce a new kfunc of bpf_task_under_cgroup Date: Sat, 6 May 2023 11:15:43 +0800 Message-Id: <20230506031545.35991-1-zhoufeng.zf@bytedance.com> X-Mailer: git-send-email 2.39.2 (Apple Git-143) MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org From: Feng Zhou Trace sched related functions, such as enqueue_task_fair, it is necessary to specify a task instead of the current task which within a given cgroup. Feng Zhou (2): bpf: Add bpf_task_under_cgroup() kfunc selftests/bpf: Add testcase for bpf_task_under_cgroup Changelog: v6->v7: Addressed comments from Hao Luo - Get rid of unnecessary check Details in here: https://lore.kernel.org/all/20230505060818.60037-1-zhoufeng.zf@bytedance.com/ v5->v6: Addressed comments from Yonghong Song - Some code format modifications. - Add ack-by Details in here: https://lore.kernel.org/all/20230504031513.13749-1-zhoufeng.zf@bytedance.com/ v4->v5: Addressed comments from Yonghong Song - Some code format modifications. Details in here: https://lore.kernel.org/all/20230428071737.43849-1-zhoufeng.zf@bytedance.com/ v3->v4: Addressed comments from Yonghong Song - Modify test cases and test other tasks, not the current task. Details in here: https://lore.kernel.org/all/20230427023019.73576-1-zhoufeng.zf@bytedance.com/ v2->v3: Addressed comments from Alexei Starovoitov - Modify the comment information of the function. - Narrow down the testcase's hook point Details in here: https://lore.kernel.org/all/20230421090403.15515-1-zhoufeng.zf@bytedance.com/ v1->v2: Addressed comments from Alexei Starovoitov - Add kfunc instead. Details in here: https://lore.kernel.org/all/20230420072657.80324-1-zhoufeng.zf@bytedance.com/ kernel/bpf/helpers.c | 17 ++++++ tools/testing/selftests/bpf/DENYLIST.s390x | 1 + .../bpf/prog_tests/task_under_cgroup.c | 53 +++++++++++++++++++ .../bpf/progs/test_task_under_cgroup.c | 51 ++++++++++++++++++ 4 files changed, 122 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/task_under_cgroup.c create mode 100644 tools/testing/selftests/bpf/progs/test_task_under_cgroup.c