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=-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=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 A3A1DC5519F for ; Thu, 12 Nov 2020 22:36:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 444CC22263 for ; Thu, 12 Nov 2020 22:36:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="lxAdD4GG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727855AbgKLWgj (ORCPT ); Thu, 12 Nov 2020 17:36:39 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:17710 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727290AbgKLWgc (ORCPT ); Thu, 12 Nov 2020 17:36:32 -0500 Received: from pps.filterd (m0109334.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0ACMP2XS014161 for ; Thu, 12 Nov 2020 14:36:31 -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=60beXYawD2xmTF+UIJDKaQb+/JMtP6jveiuhsmWF1Tg=; b=lxAdD4GGAZ8SXm9A4xTlKpMdsoiYuPVSTUK7V5FCCikU502eptLBeVNHDczkGuGbONm0 0UosmV7pKbJfZonly7hxYVvaRNYYj4RK6YahSWdFyyc01X7gtG7HPk4EizBqhevilblG VabJh3Lh6yuHamVVzi7thVo2bE+Ooa/wYcI= Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com with ESMTP id 34r5vnd2p9-13 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Thu, 12 Nov 2020 14:36:31 -0800 Received: from intmgw002.06.prn3.facebook.com (2620:10d:c085:208::f) by mail.thefacebook.com (2620:10d:c085:21d::4) 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 36C30A7D220; 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 21/34] bpf: eliminate rlimit-based memory accounting for cgroup storage maps Date: Thu, 12 Nov 2020 14:15:30 -0800 Message-ID: <20201112221543.3621014-22-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 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 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 adultscore=0 priorityscore=1501 spamscore=0 mlxlogscore=999 suspectscore=38 phishscore=0 mlxscore=0 bulkscore=0 malwarescore=0 lowpriorityscore=0 clxscore=1015 impostorscore=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: linux-kernel@vger.kernel.org Do not use rlimit-based memory accounting for cgroup storage maps. It has been replaced with the memcg-based memory accounting. Signed-off-by: Roman Gushchin Acked-by: Song Liu --- kernel/bpf/local_storage.c | 21 +-------------------- 1 file changed, 1 insertion(+), 20 deletions(-) diff --git a/kernel/bpf/local_storage.c b/kernel/bpf/local_storage.c index 212d6dbbc39a..c28a47d5177a 100644 --- a/kernel/bpf/local_storage.c +++ b/kernel/bpf/local_storage.c @@ -288,8 +288,6 @@ static struct bpf_map *cgroup_storage_map_alloc(union= bpf_attr *attr) { int numa_node =3D bpf_map_attr_numa_node(attr); struct bpf_cgroup_storage_map *map; - struct bpf_map_memory mem; - int ret; =20 if (attr->key_size !=3D sizeof(struct bpf_cgroup_storage_key) && attr->key_size !=3D sizeof(__u64)) @@ -309,18 +307,10 @@ static struct bpf_map *cgroup_storage_map_alloc(uni= on bpf_attr *attr) /* max_entries is not used and enforced to be 0 */ return ERR_PTR(-EINVAL); =20 - ret =3D bpf_map_charge_init(&mem, sizeof(struct bpf_cgroup_storage_map)= ); - if (ret < 0) - return ERR_PTR(ret); - map =3D kmalloc_node(sizeof(struct bpf_cgroup_storage_map), __GFP_ZERO | GFP_USER | __GFP_ACCOUNT, numa_node); - if (!map) { - bpf_map_charge_finish(&mem); + if (!map) return ERR_PTR(-ENOMEM); - } - - bpf_map_charge_move(&map->map.memory, &mem); =20 /* copy mandatory map attributes */ bpf_map_init_from_attr(&map->map, attr); @@ -509,9 +499,6 @@ struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(s= truct bpf_prog *prog, =20 size =3D bpf_cgroup_storage_calculate_size(map, &pages); =20 - if (bpf_map_charge_memlock(map, pages)) - return ERR_PTR(-EPERM); - storage =3D kmalloc_node(sizeof(struct bpf_cgroup_storage), gfp, map->numa_node); if (!storage) @@ -533,7 +520,6 @@ struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(s= truct bpf_prog *prog, return storage; =20 enomem: - bpf_map_uncharge_memlock(map, pages); kfree(storage); return ERR_PTR(-ENOMEM); } @@ -560,16 +546,11 @@ void bpf_cgroup_storage_free(struct bpf_cgroup_stor= age *storage) { enum bpf_cgroup_storage_type stype; struct bpf_map *map; - u32 pages; =20 if (!storage) return; =20 map =3D &storage->map->map; - - bpf_cgroup_storage_calculate_size(map, &pages); - bpf_map_uncharge_memlock(map, pages); - stype =3D cgroup_storage_type(map); if (stype =3D=3D BPF_CGROUP_STORAGE_SHARED) call_rcu(&storage->rcu, free_shared_cgroup_storage_rcu); --=20 2.26.2