From patchwork Fri May 5 06:08:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Feng zhou X-Patchwork-Id: 679467 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 39FB3C77B7D for ; Fri, 5 May 2023 06:08:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229905AbjEEGI5 (ORCPT ); Fri, 5 May 2023 02:08:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41050 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230397AbjEEGI4 (ORCPT ); Fri, 5 May 2023 02:08:56 -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 BA7A414906 for ; Thu, 4 May 2023 23:08:30 -0700 (PDT) Received: by mail-pf1-x430.google.com with SMTP id d2e1a72fcca58-63b60366047so1023117b3a.1 for ; Thu, 04 May 2023 23:08:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1683266910; x=1685858910; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=pSta0d8rMPRbh+U2QgJPeyvHfLc6ifzE+V/ts4215w4=; b=juItMXpkR4RnyffRyLs1wh8s/8701jzDW2VtsmFSD2zvi2i7VHcKO3u0TXhkFzZhdu AX5b8VtEtnjrLlrb/dR1Tlz5d0txNH6h7XZC3JF/CXtQkGJWQyZsE/FGdwtP/FoNa6T7 roAR5j0Xn8H7OsV+7w48JglbFpS56Ofbib9v6Q5/c+Dcsiytbl61PAnkgWsk6UK4sFig B6VIPv1N7PgVC0i5en+/ygo2siYo5wr1eIFjTzUAPsH1O3ljQoMxAJRpSmKX66IxEeSK oCID+pd0GLqxfA4tTXmz7lJE5QU2SGJqsSqe6K7JfzrP9gat/3U3IFHLrWDz66Op5/gj gJwA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683266910; x=1685858910; 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=pSta0d8rMPRbh+U2QgJPeyvHfLc6ifzE+V/ts4215w4=; b=MBQpx9YGuJDWFJIujfS9CxhTb4iOnxuHFB4iELLC0bz1s+hIePpBLSLLZ2xr5/kSAv 9UQt49jYnN2mVyPDYnhOQ8z3r72rjhOvL+5m1z986OiBTa9Zr2HizS5OxTy5xocu0kav KnVdq5pvzlC6bH4nzwH4vNnB3rO4Mls0A67v9hNKYzVdVupC2kC91tWe3HX7f+t02SK9 hh4DRFVZFXnQcaqv1kVP0yWQgOWMlhXkUvqJ8qQRCbVdu+S7LHIK6Ww4jMvjJCh8vybb DqLNHNLo37uTOtlX1eMiom3NGENAHxHWy0ylKjpX9J4YzooZPMCHu370BruN5XI1Xcxp +9LA== X-Gm-Message-State: AC+VfDzrAQiQxlHXeoHittwDoyhaRACevUzGlprm9XyrjgYThCk9z8HQ C0EiuV1n6pxAdc7HdAEcU/qUYQ== X-Google-Smtp-Source: ACHHUZ5Xrm8F82be2bnl9ESPtXrPj37oeZwDiAyWWRpUiCKlDm0Qa/z5/SRQTHsveMLnYKuVj1wsLw== X-Received: by 2002:a05:6a20:12c5:b0:f5:b4a5:73b4 with SMTP id v5-20020a056a2012c500b000f5b4a573b4mr523167pzg.27.1683266910194; Thu, 04 May 2023 23:08:30 -0700 (PDT) Received: from C02F52LSML85.bytedance.net ([139.177.225.238]) by smtp.gmail.com with ESMTPSA id a15-20020aa780cf000000b0063799398eb9sm762160pfn.58.2023.05.04.23.08.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 May 2023 23:08:29 -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 v6 0/2] Introduce a new kfunc of bpf_task_under_cgroup Date: Fri, 5 May 2023 14:08:16 +0800 Message-Id: <20230505060818.60037-1-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: 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 | 20 +++++++ 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, 125 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