From patchwork Thu May 4 03:15:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Feng zhou X-Patchwork-Id: 679470 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 AAED7C77B75 for ; Thu, 4 May 2023 03:16:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229928AbjEDDQh (ORCPT ); Wed, 3 May 2023 23:16:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38684 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229883AbjEDDP5 (ORCPT ); Wed, 3 May 2023 23:15:57 -0400 Received: from mail-pl1-x634.google.com (mail-pl1-x634.google.com [IPv6:2607:f8b0:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A6996E73 for ; Wed, 3 May 2023 20:15:25 -0700 (PDT) Received: by mail-pl1-x634.google.com with SMTP id d9443c01a7336-1aaea3909d1so47304275ad.2 for ; Wed, 03 May 2023 20:15:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1683170125; x=1685762125; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=Xkrmk35Ky/85BXeTs5JHeSBG+pv+CkQQNQ4vZFORK28=; b=H0xKmXg00rizh7koD72fKkzR5N23zr1oeXxjphDXAOULpcivedUmDRe4ACkOFDa0RS CF57WbP4QUCHkEmu1irEOUxWFWSog21Pn6RzGKK1kcNZeKF5qeQfIO+97BnoME/c8uTR 4qnqNrc0huw7UYuOFQfwc2AOutSVDR3Gqo3CaRyCciu+jkfRHew9HHmJGd1AqX7N0bhh 4+l/eRrXr6hTlzgvTp61oM/lnOBV42hSzNkSgTrfPVy/ve+EyOQIwB9GaiEEEcITHti2 agIvqBHu737c8fOv1J7DGaDMokxDMLk5MPH8KTEhB2NXxfhloZ9GoNKAK3P7MVJ1LakT h4ew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683170125; x=1685762125; 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=Xkrmk35Ky/85BXeTs5JHeSBG+pv+CkQQNQ4vZFORK28=; b=KnyBcCNAjwycVMDyykH75TgCztin84OO+4vqY/AhaRV8J/8pHHBxnt4ZwwhbJhA934 5H87sHpb86UCUsVRUPdz+hFfFucigsRVRYMwGV1ZZq3hr9FXF+T1rLitdoZnyd1VOALD HK6nP55Pjte+ZtrKU8CRMydyocR7O+HWnh2ZYszlx4zLUXWUiFVjad5RuSbOf7siBmtQ nn58ZGRkIIQz/FK/j2Cps6pBUsowIqv2h69VAjGVWpd4SZCfEL044jS9st3tpBHD82BZ qUSRoKU0tvut9fbj9wq+hJ0v4xc7i8R2amYDrVZB7vzg0X0Ja5kC18trGmWB6EzPtirc qdKA== X-Gm-Message-State: AC+VfDw+embz+ZS8oZghKe+6d/oKOqZbRF5SkCiEojT+ZDc2ALu5ejKG fn6J+R02Clu+EG+TeMmciYT0GA== X-Google-Smtp-Source: ACHHUZ4hu7USx+KN5GnVZpqUhumPBe2XDJMTC8+jNBH1K/EIRNRF1Sn3d1dZRLNXpaqNA/qanVhE5w== X-Received: by 2002:a17:902:ecc5:b0:1ab:1d81:f8f1 with SMTP id a5-20020a170902ecc500b001ab1d81f8f1mr2724951plh.46.1683170125157; Wed, 03 May 2023 20:15:25 -0700 (PDT) Received: from C02F52LSML85.bytedance.net ([139.177.225.254]) by smtp.gmail.com with ESMTPSA id ix7-20020a170902f80700b001aaecc15d66sm7146121plb.289.2023.05.03.20.15.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 May 2023 20:15:24 -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 v5 0/2] Introduce a new kfunc of bpf_task_under_cgroup Date: Thu, 4 May 2023 11:15:10 +0800 Message-Id: <20230504031513.13749-1-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: 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 | 20 +++++++ tools/testing/selftests/bpf/DENYLIST.s390x | 1 + .../bpf/prog_tests/task_under_cgroup.c | 54 +++++++++++++++++++ .../bpf/progs/test_task_under_cgroup.c | 51 ++++++++++++++++++ 4 files changed, 126 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