From patchwork Thu Apr 27 02:30:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Feng zhou X-Patchwork-Id: 677823 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 E66CAC77B7C for ; Thu, 27 Apr 2023 02:31:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242915AbjD0CbC (ORCPT ); Wed, 26 Apr 2023 22:31:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34916 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242892AbjD0Ca7 (ORCPT ); Wed, 26 Apr 2023 22:30:59 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EA34E30FB for ; Wed, 26 Apr 2023 19:30:32 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id 98e67ed59e1d1-24736790966so6627138a91.2 for ; Wed, 26 Apr 2023 19:30:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1682562632; x=1685154632; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=/xaj+Q2T9Te+PgOenHvOLtflXb3HKv6gZnvibqK8ANs=; b=SJFbcuN2wIAnq9cFYM4ycwFLqtOyL4HPtbDXgL5MYgp8D1ouBKdJb20SkaoZn6eXm8 UuOcG8cjQ5FUis75xpMbQrZAPH9aFG45V7YRBtVW0a2yCbNrZ71Y2Lf0iermD559TZp7 w28k/9cuJkkY6yZNF+u97oW/5qa5qJAugvgGDX3ygRv5KghEQzlQecaLF2D0LF058VN8 dKfHkl4O617HBEnpA4fwCT3ds8zVbysa4Pbpk+w6Micj10kFaOldBpxntHcZUvaWSemP 3NNShXAMv+6ok1cyeDg5hR6xnC18LRNxDK9LPVdLgpqxVyU6/maKlhAifIs4IRDTYqex uo+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682562632; x=1685154632; 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=/xaj+Q2T9Te+PgOenHvOLtflXb3HKv6gZnvibqK8ANs=; b=aVWzvs+wOTIKXjCvTGwscRC4ZgEgFNyXKwgOmRzcOTHgfJcgyIEd8tuHPI4OSoI+Oz Tl+EcLFp5gbO+NTOYlWLqqEab0EsQsg19ZSbn4nmdtQhL832GECDYH8MVvjo7TQfqpQO 55Th4+Vn80FAhl97AoG5P02luH0xERMUEk64mAijNyBJHcogYhfmzt5UyxO/KV98QTLC +Iies8hwGW4bVIqpRrWAlpLMDxQpG/VSF9K0EdHrelq77WqF7vXwLSho/fzv0vl9HLBZ RwFgSDPHtObejmM50SVTfvCKziPkaawsJeUmRYhT7quycO+ckGjx3b/Son1kW05YDf6n VkPQ== X-Gm-Message-State: AC+VfDzqJSiPtSF8RWIq6sOQkUPgfihqRMPxfn3/sO8ttS1nag5XmTvO uiO9OvdnH1flXlklzILgUXI69g== X-Google-Smtp-Source: ACHHUZ6cWGdmirE46oQJz7Wde94gds8DMkTlinHiZyFzEmWRWby+bBK44FUgnNEZpn4sXjVdv0I5Dw== X-Received: by 2002:a17:90b:17cc:b0:247:6a31:d59d with SMTP id me12-20020a17090b17cc00b002476a31d59dmr360691pjb.1.1682562632340; Wed, 26 Apr 2023 19:30:32 -0700 (PDT) Received: from C02F52LSML85.bytedance.net ([139.177.225.254]) by smtp.gmail.com with ESMTPSA id m8-20020a654388000000b0051303d3e3c5sm10291852pgp.42.2023.04.26.19.30.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Apr 2023 19:30:31 -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 v3 0/2] Introduce a new kfunc of bpf_task_under_cgroup Date: Thu, 27 Apr 2023 10:30:17 +0800 Message-Id: <20230427023019.73576-1-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: 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 | 47 +++++++++++++++++++ .../selftests/bpf/progs/cgrp_kfunc_common.h | 1 + .../bpf/progs/test_task_under_cgroup.c | 37 +++++++++++++++ 5 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