From patchwork Fri Apr 21 09:04:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Feng zhou X-Patchwork-Id: 676409 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 9ACE4C7618E for ; Fri, 21 Apr 2023 09:05:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231343AbjDUJFe (ORCPT ); Fri, 21 Apr 2023 05:05:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51968 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231363AbjDUJFd (ORCPT ); Fri, 21 Apr 2023 05:05:33 -0400 Received: from mail-pf1-x430.google.com (mail-pf1-x430.google.com [IPv6:2607:f8b0:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 997798691 for ; Fri, 21 Apr 2023 02:05:31 -0700 (PDT) Received: by mail-pf1-x430.google.com with SMTP id d2e1a72fcca58-63b4a64c72bso1710366b3a.0 for ; Fri, 21 Apr 2023 02:05:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1682067931; x=1684659931; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=akWWD6Hh6r+OYGyfrxLzmZDpacDQxQ27SVpN4XMCC9Q=; b=hn6iQuC0rkz7WgMmaMAcsLAAvZra6ZxsIgMlDFed2YP1xoOH+yjOoPqvctYof5NHaJ XoIqnD43aHZQY4jh2CXmBrxnN11oGVwBsmXcZ3cFjr7TS2sbhS9LLnLPM/JQNwGhMRLW 3TjdAUPNHlbDqbaVWRHTJOqCAHK5avxkQwCq84VKMAImyj6vDC3z2qh0cFHBnCIKsZoM A1waAFM5XeQRZE8ZjQc6pYn5H+wGEwkIj+s9WK028cf7sIAxCPXjUShJcOHf40+SXEaw e3KTrDQt7FFfLtBBLBUBEpHItHSHqM1p+8O6VfuWGwnMv35la7XtObm5aU4eLvZ1nv5Y VrqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682067931; x=1684659931; 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=akWWD6Hh6r+OYGyfrxLzmZDpacDQxQ27SVpN4XMCC9Q=; b=dM/ebjlOH2BnnjXV3iDHQHnxgbIQVrQervnd3x4JKwqHn/558pMMusPdSISmPWslal rcqWFIW4v+ahQIIJnHJ2f+EOb2ypNVL9h9a9xyjhpQpqbdcEK/90+lhU6kWl53jhabns 4Sml0RJbHweUPiRG38d/qqHPz84NjB81/2JhDZ25G38jYFXnFtXOBk8zxtke7CDFNGFy 52Kreq9tTucp3nRswc92D9+m9N7mKoXZAIrXSGLOi2Cz7iFw6+T6HQLh7lN8QrdXwMoU EpqtHNkFAktt8rvjm9kj89IqQaQgFLr3lakFxDeQxCKY1yYWeV1V5Phwx4rRNOG7u/1W QgRQ== X-Gm-Message-State: AAQBX9cqrTqU9aDDXGSOtXqo1WBfnkdrsi/LkinnmqUj4yi/uHcuRT01 fkG4pakNxpA9bLTmqviH6Pk19Q== X-Google-Smtp-Source: AKy350ZMWKiIS/nyv1lpgmbo/fHUe68CiVCgs7QJ0XPwJHYTMJ8tqy3mCU2aNI65do0p5WFlUbaZPg== X-Received: by 2002:a05:6a20:12ca:b0:f0:4dbf:5f9f with SMTP id v10-20020a056a2012ca00b000f04dbf5f9fmr6785242pzg.29.1682067931044; Fri, 21 Apr 2023 02:05:31 -0700 (PDT) Received: from C02F52LSML85.bytedance.net ([139.177.225.254]) by smtp.gmail.com with ESMTPSA id t3-20020a17090a950300b0024796ddd19bsm4192309pjo.7.2023.04.21.02.05.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Apr 2023 02:05:30 -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 v2 0/2] Introduce a new kfunc of bpf_task_under_cgroup Date: Fri, 21 Apr 2023 17:04:01 +0800 Message-Id: <20230421090403.15515-1-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: 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 | 19 ++++++++ .../bpf/prog_tests/task_under_cgroup.c | 46 +++++++++++++++++++ .../selftests/bpf/progs/cgrp_kfunc_common.h | 1 + .../bpf/progs/test_task_under_cgroup.c | 40 ++++++++++++++++ 4 files changed, 106 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