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=-7.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no 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 E9557C4741F for ; Tue, 29 Sep 2020 08:48:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 97768206A2 for ; Tue, 29 Sep 2020 08:48:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="GULg01tb" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727909AbgI2IsD (ORCPT ); Tue, 29 Sep 2020 04:48:03 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:42946 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727799AbgI2Ir7 (ORCPT ); Tue, 29 Sep 2020 04:47:59 -0400 Received: from pps.filterd (m0148460.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 08T8dkV8030472 for ; Tue, 29 Sep 2020 01:47:58 -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-transfer-encoding : content-type; s=facebook; bh=MvNShYh0XkJBtZGp+NAVoGeK3HTwl3VwHI+goioSK5A=; b=GULg01tbkZDn7RjoXFtxSSw6ZTmyoryBMUcmOmg42mzoKqTR73YVrjAXP4z1fK56Oo29 OuM7CylqeLr+UKinQtSu24it0wP0zwJf+XFCFXblM10SxiKBikVz+uz6amo2A/o8GM8z zlkcecJF+Wn7SWYYTOollVL/au3LkMQOP9s= Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com with ESMTP id 33t35n3ww7-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 29 Sep 2020 01:47:58 -0700 Received: from intmgw002.03.ash8.facebook.com (2620:10d:c085:208::f) by mail.thefacebook.com (2620:10d:c085:21d::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Tue, 29 Sep 2020 01:47:56 -0700 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id 4BA5C62E5765; Tue, 29 Sep 2020 01:47:55 -0700 (PDT) From: Song Liu To: , CC: , , , , , Song Liu Subject: [PATCH bpf-next 0/2] introduce BPF_F_SHARE_PE Date: Tue, 29 Sep 2020 01:47:48 -0700 Message-ID: <20200929084750.419168-1-songliubraving@fb.com> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-09-29_01:2020-09-29,2020-09-29 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 mlxlogscore=674 mlxscore=0 lowpriorityscore=0 suspectscore=0 impostorscore=0 malwarescore=0 phishscore=0 clxscore=1015 bulkscore=0 priorityscore=1501 spamscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009290080 X-FB-Internal: deliver Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org This set introduces BPF_F_SHARE_PE to perf event array for better sharing of perf event. By default, perf event array removes the perf event when t= he map fd used to add the event is closed. With BPF_F_SHARE_PE set, however, the perf event will stay in the array until it is removed, or the map is closed. Song Liu (2): bpf: introduce BPF_F_SHARE_PE for perf event array selftests/bpf: add tests for BPF_F_SHARE_PE include/uapi/linux/bpf.h | 3 + kernel/bpf/arraymap.c | 31 ++++++++- tools/include/uapi/linux/bpf.h | 3 + .../bpf/prog_tests/perf_event_share.c | 68 +++++++++++++++++++ .../bpf/progs/test_perf_event_share.c | 44 ++++++++++++ 5 files changed, 147 insertions(+), 2 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/perf_event_sha= re.c create mode 100644 tools/testing/selftests/bpf/progs/test_perf_event_sha= re.c -- 2.24.1