From patchwork Thu Nov 12 22:15:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Gushchin X-Patchwork-Id: 11902009 X-Patchwork-Delegate: bpf@iogearbox.net 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 EDB7DC56202 for ; Thu, 12 Nov 2020 22:36:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 988C922244 for ; Thu, 12 Nov 2020 22:36:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="GC0uVOGu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727711AbgKLWgb (ORCPT ); Thu, 12 Nov 2020 17:36:31 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:26882 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727530AbgKLWga (ORCPT ); Thu, 12 Nov 2020 17:36:30 -0500 Received: from pps.filterd (m0148461.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0ACMNnp2025159 for ; Thu, 12 Nov 2020 14:36:30 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=facebook; bh=ASU5eX9Fzb/xsl6VZmhE+3qV6oQDGd2P3b7uVl5v5h4=; b=GC0uVOGuV21eygz2EmnfkxkBXDO8I/wLPrB6A9AKfmX0FSM2VIGwVkvNCcIkr6cBXNVj 5rJ41/n1n/fc+mvOY1OIvxHIQEtul7An7foCqOE443YTNtPe8AY1mJVqcYC5DsAqbVzT RXOPvumPiSidIG7SWt5dSUpMZNlHTbTgLi4= Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com with ESMTP id 34s7getq7y-12 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Thu, 12 Nov 2020 14:36:30 -0800 Received: from intmgw002.06.prn3.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; Thu, 12 Nov 2020 14:36:28 -0800 Received: by devvm3388.prn0.facebook.com (Postfix, from userid 111017) id 31DA2A7D21B; Thu, 12 Nov 2020 14:16:01 -0800 (PST) From: Roman Gushchin To: CC: Alexei Starovoitov , Daniel Borkmann , , Andrii Nakryiko , Shakeel Butt , , , , Roman Gushchin , Song Liu Subject: [PATCH bpf-next v5 20/34] bpf: eliminate rlimit-based memory accounting for cpumap maps Date: Thu, 12 Nov 2020 14:15:29 -0800 Message-ID: <20201112221543.3621014-21-guro@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20201112221543.3621014-1-guro@fb.com> References: <20201112221543.3621014-1-guro@fb.com> MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-12_14:2020-11-12,2020-11-12 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 mlxscore=0 mlxlogscore=908 adultscore=0 lowpriorityscore=0 priorityscore=1501 suspectscore=38 impostorscore=0 malwarescore=0 phishscore=0 clxscore=1015 spamscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011120127 X-FB-Internal: deliver Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net Do not use rlimit-based memory accounting for cpumap maps. It has been replaced with the memcg-based memory accounting. Signed-off-by: Roman Gushchin Acked-by: Song Liu --- kernel/bpf/cpumap.c | 16 +--------------- 1 file changed, 1 insertion(+), 15 deletions(-) diff --git a/kernel/bpf/cpumap.c b/kernel/bpf/cpumap.c index 563f96cc8a9d..7103d89a7d41 100644 --- a/kernel/bpf/cpumap.c +++ b/kernel/bpf/cpumap.c @@ -84,8 +84,6 @@ static struct bpf_map *cpu_map_alloc(union bpf_attr *attr) u32 value_size = attr->value_size; struct bpf_cpu_map *cmap; int err = -ENOMEM; - u64 cost; - int ret; if (!bpf_capable()) return ERR_PTR(-EPERM); @@ -109,26 +107,14 @@ static struct bpf_map *cpu_map_alloc(union bpf_attr *attr) goto free_cmap; } - /* make sure page count doesn't overflow */ - cost = (u64) cmap->map.max_entries * sizeof(struct bpf_cpu_map_entry *); - - /* Notice returns -EPERM on if map size is larger than memlock limit */ - ret = bpf_map_charge_init(&cmap->map.memory, cost); - if (ret) { - err = ret; - goto free_cmap; - } - /* Alloc array for possible remote "destination" CPUs */ cmap->cpu_map = bpf_map_area_alloc(cmap->map.max_entries * sizeof(struct bpf_cpu_map_entry *), cmap->map.numa_node); if (!cmap->cpu_map) - goto free_charge; + goto free_cmap; return &cmap->map; -free_charge: - bpf_map_charge_finish(&cmap->map.memory); free_cmap: kfree(cmap); return ERR_PTR(err);