From patchwork Fri Apr 28 07:17:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Feng zhou X-Patchwork-Id: 677943 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 C06B4C77B60 for ; Fri, 28 Apr 2023 07:18:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345475AbjD1HSR (ORCPT ); Fri, 28 Apr 2023 03:18:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345465AbjD1HSQ (ORCPT ); Fri, 28 Apr 2023 03:18:16 -0400 Received: from mail-pg1-x535.google.com (mail-pg1-x535.google.com [IPv6:2607:f8b0:4864:20::535]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 599662690 for ; Fri, 28 Apr 2023 00:17:50 -0700 (PDT) Received: by mail-pg1-x535.google.com with SMTP id 41be03b00d2f7-52867360efcso3599057a12.2 for ; Fri, 28 Apr 2023 00:17:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1682666270; x=1685258270; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=ukMaBLPXL+Km2GlrH9mAFaejvqqjOkS5iDjlAGQ7GAY=; b=MJsEXN/X56AtbGcdtftxmkDoW4CjqAstmIw63sZCSjxnxfcz4HCr5gfJ0ZcNjsp+aU VomhmzDYHgHGbiDjetF70zrlY0E9U2eXQl/s7fV1KCBy/rZLoSoFhNlrSXdeQ3epjujI 33zHwShNStT5XcnHJdLANH2a4UGUlmwFA+bvd35kJmFyZQRDsP+Z/FdPuoLZUUElnmXE 2uXO4si4jFYWkDADrJKEFG4DsRYs9/93dP+lNRdzDV4zwCRXMWdbJjI4dfH7ZjGpe9lw +5kf1kH6a4Sx7rCjOwt115A9TXNRtM7jyYyCz+Se9lSmOfk4L3FjQofipcNvOnspEE2q APPw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682666270; x=1685258270; 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=ukMaBLPXL+Km2GlrH9mAFaejvqqjOkS5iDjlAGQ7GAY=; b=gpeIBHN8Oey0J04gKEXHnQx1vXbyZiwHz8fWkaat6rniJ0RFdJIwPwutfA0T161vj+ xC0EPxMxD/ouP+d97dOoXre5EzzaY2cMZi+1vbG50vPJjtclllKIDyDOz6+/gDHbpO8L U21Ej+emwsbAkpQ6Wy+e0vN62z5q5F4VD6l4GssoXvhYVGBLZyRGm9a7II/ecaAxReUX KvznW64qHWSlqSKeBy2/I9jfTjEnFcVjp3qJ4vwlh07Yjkmc2NdhkDh5oXs/kYuuGOtO HZA3PwXHg5iV8DJVvhtzbo4WVNF/lVvcUHURrGMe5BxvxP132xWmtFPNvsKJI34EEnRb Im4Q== X-Gm-Message-State: AC+VfDxx3eXSzEE4/lFUaltp2lW+GrS19sJLJ0ynhoSRt6HQC2AfoSNU aGVmF7Y/k9izTq0IaqfZlaCNUQ== X-Google-Smtp-Source: ACHHUZ5YsRCK7s1Ipah26XWJmbC2dPQFPOOLy6IpRQ+5lOSJft2l8ZFBG3iszAMzgA9g3+4R4kA+MQ== X-Received: by 2002:a17:90b:4a10:b0:237:b5d4:c0cc with SMTP id kk16-20020a17090b4a1000b00237b5d4c0ccmr4730936pjb.39.1682666269807; Fri, 28 Apr 2023 00:17:49 -0700 (PDT) Received: from C02F52LSML85.bytedance.net ([139.177.225.254]) by smtp.gmail.com with ESMTPSA id j2-20020a17090a318200b0024739d29252sm14159939pjb.15.2023.04.28.00.17.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Apr 2023 00:17:49 -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 v4 0/2] Introduce a new kfunc of bpf_task_under_cgroup Date: Fri, 28 Apr 2023 15:17:35 +0800 Message-Id: <20230428071737.43849-1-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: 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 | 55 +++++++++++++++++++ .../bpf/progs/test_task_under_cgroup.c | 51 +++++++++++++++++ 4 files changed, 127 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