From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,T_DKIMWL_WL_HIGH,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0557FC282E5 for ; Sat, 25 May 2019 16:37:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D12E1216FD for ; Sat, 25 May 2019 16:37:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="TPpiil9i" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727176AbfEYQh5 (ORCPT ); Sat, 25 May 2019 12:37:57 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:54714 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727125AbfEYQh4 (ORCPT ); Sat, 25 May 2019 12:37:56 -0400 Received: from pps.filterd (m0089730.ppops.net [127.0.0.1]) by m0089730.ppops.net (8.16.0.27/8.16.0.27) with SMTP id x4PGYaOR022380 for ; Sat, 25 May 2019 09:37:55 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=facebook; bh=5RTPfI6UzZo8h/nwiW8QfQd6DBgTvw5sKSvqdQKtb2o=; b=TPpiil9iO3VW4SB2PmqCp9qNWGOvc8+rJRLqlnPEeKiuoRpjr1zbk59/iNkN0Td3xokU lcEQKnPuwKfjThy0/xEBlee717DwDqV0E5f+cVPd+4LOcwjNI/kCltJLw6FqkghIPQu8 qY/6g7VDt9ODi0BoBb5ESAfmkFJWRC/OFZw= Received: from mail.thefacebook.com (mailout.thefacebook.com [199.201.64.23]) by m0089730.ppops.net with ESMTP id 2sq16r8wey-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Sat, 25 May 2019 09:37:55 -0700 Received: from mx-out.facebook.com (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::127) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1713.5; Sat, 25 May 2019 09:37:54 -0700 Received: by devvm2643.prn2.facebook.com (Postfix, from userid 111017) id 2E29D126D83B1; Sat, 25 May 2019 09:37:43 -0700 (PDT) Smtp-Origin-Hostprefix: devvm From: Roman Gushchin Smtp-Origin-Hostname: devvm2643.prn2.facebook.com To: Alexei Starovoitov , CC: Daniel Borkmann , , Tejun Heo , , , Stanislav Fomichev , Yonghong Song , , Roman Gushchin Smtp-Origin-Cluster: prn2c23 Subject: [PATCH v5 bpf-next 0/4] cgroup bpf auto-detachment Date: Sat, 25 May 2019 09:37:38 -0700 Message-ID: <20190525163742.2616471-1-guro@fb.com> X-Mailer: git-send-email 2.17.1 X-FB-Internal: Safe MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-05-25_11:,, signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=743 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905250117 X-FB-Internal: deliver Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patchset implements a cgroup bpf auto-detachment functionality: bpf programs are detached as soon as possible after removal of the cgroup, without waiting for the release of all associated resources. Patches 2 and 3 are required to implement a corresponding kselftest in patch 4. v5: 1) rebase v4: 1) release cgroup bpf data using a workqueue 2) add test_cgroup_attach to .gitignore v3: 1) some minor changes and typo fixes v2: 1) removed a bogus check in patch 4 2) moved buf[len] = 0 in patch 2 Roman Gushchin (4): bpf: decouple the lifetime of cgroup_bpf from cgroup itself selftests/bpf: convert test_cgrp2_attach2 example into kselftest selftests/bpf: enable all available cgroup v2 controllers selftests/bpf: add auto-detach test include/linux/bpf-cgroup.h | 11 +- include/linux/cgroup.h | 18 +++ kernel/bpf/cgroup.c | 41 ++++- kernel/cgroup/cgroup.c | 11 +- samples/bpf/Makefile | 2 - tools/testing/selftests/bpf/.gitignore | 1 + tools/testing/selftests/bpf/Makefile | 3 +- tools/testing/selftests/bpf/cgroup_helpers.c | 57 +++++++ .../selftests/bpf/test_cgroup_attach.c | 146 ++++++++++++++++-- 9 files changed, 261 insertions(+), 29 deletions(-) rename samples/bpf/test_cgrp2_attach2.c => tools/testing/selftests/bpf/test_cgroup_attach.c (79%) -- 2.21.0