From patchwork Tue Nov 17 02:55:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Gushchin X-Patchwork-Id: 11911317 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 37DC8C63777 for ; Tue, 17 Nov 2020 02:56:12 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C18F8246A6 for ; Tue, 17 Nov 2020 02:56:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="k0I0Zevd" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C18F8246A6 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=fb.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C1D0B6B0081; Mon, 16 Nov 2020 21:55:44 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 75E816B0083; Mon, 16 Nov 2020 21:55:44 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 313106B0082; Mon, 16 Nov 2020 21:55:44 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0235.hostedemail.com [216.40.44.235]) by kanga.kvack.org (Postfix) with ESMTP id A40766B0082 for ; Mon, 16 Nov 2020 21:55:43 -0500 (EST) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 4B7E6181AEF21 for ; Tue, 17 Nov 2020 02:55:43 +0000 (UTC) X-FDA: 77492394966.16.jelly02_2309fe92732e Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin16.hostedemail.com (Postfix) with ESMTP id 2F23D100E690C for ; Tue, 17 Nov 2020 02:55:43 +0000 (UTC) X-HE-Tag: jelly02_2309fe92732e X-Filterd-Recvd-Size: 4763 Received: from mx0b-00082601.pphosted.com (mx0b-00082601.pphosted.com [67.231.153.30]) by imf05.hostedemail.com (Postfix) with ESMTP for ; Tue, 17 Nov 2020 02:55:42 +0000 (UTC) Received: from pps.filterd (m0109331.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0AH2nTpK031204 for ; Mon, 16 Nov 2020 18:55:41 -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=JI8lzc0PiDhnbYKHFXJMHYNhQ4e8TGJtdGLL1d00jSU=; b=k0I0Zevd+Ddzli3n/XJeze0e1IMRlZsN3sDAncdsFNOCdPmqxDViucy/1CkAoCWdA8+t Ri+yUft7xj/o0V+GewrC29sM8taBP7afY22NBsTEs2fKHtuJg+MZBDuvKUxUISWa4dRY Z5D+gLJ1m+AzzX0qQT5orsWCHPaOEl64DjQ= Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com with ESMTP id 34uwyg2pnp-14 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Mon, 16 Nov 2020 18:55:41 -0800 Received: from intmgw001.41.prn1.facebook.com (2620:10d:c085:108::8) by mail.thefacebook.com (2620:10d:c085:11d::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Mon, 16 Nov 2020 18:55:37 -0800 Received: by devvm3388.prn0.facebook.com (Postfix, from userid 111017) id 21DC0C5F7EC; Mon, 16 Nov 2020 18:55:34 -0800 (PST) From: Roman Gushchin To: CC: , , , , , , , Subject: [PATCH v6 22/34] bpf: eliminate rlimit-based memory accounting for devmap maps Date: Mon, 16 Nov 2020 18:55:17 -0800 Message-ID: <20201117025529.1034387-23-guro@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20201117025529.1034387-1-guro@fb.com> References: <20201117025529.1034387-1-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=2020-11-16_13:2020-11-13,2020-11-16 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 bulkscore=0 mlxlogscore=828 priorityscore=1501 clxscore=1015 mlxscore=0 impostorscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 spamscore=0 phishscore=0 suspectscore=38 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011170022 X-FB-Internal: deliver X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Do not use rlimit-based memory accounting for devmap maps. It has been replaced with the memcg-based memory accounting. Signed-off-by: Roman Gushchin Acked-by: Song Liu --- kernel/bpf/devmap.c | 18 ++---------------- 1 file changed, 2 insertions(+), 16 deletions(-) diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c index e75e12ae624e..b2e98c1049e1 100644 --- a/kernel/bpf/devmap.c +++ b/kernel/bpf/devmap.c @@ -109,8 +109,6 @@ static inline struct hlist_head *dev_map_index_hash(struct bpf_dtab *dtab, static int dev_map_init_map(struct bpf_dtab *dtab, union bpf_attr *attr) { u32 valsize = attr->value_size; - u64 cost = 0; - int err; /* check sanity of attributes. 2 value sizes supported: * 4 bytes: ifindex @@ -135,21 +133,13 @@ static int dev_map_init_map(struct bpf_dtab *dtab, union bpf_attr *attr) if (!dtab->n_buckets) /* Overflow check */ return -EINVAL; - cost += (u64) sizeof(struct hlist_head) * dtab->n_buckets; - } else { - cost += (u64) dtab->map.max_entries * sizeof(struct bpf_dtab_netdev *); } - /* if map size is larger than memlock limit, reject it */ - err = bpf_map_charge_init(&dtab->map.memory, cost); - if (err) - return -EINVAL; - if (attr->map_type == BPF_MAP_TYPE_DEVMAP_HASH) { dtab->dev_index_head = dev_map_create_hash(dtab->n_buckets, dtab->map.numa_node); if (!dtab->dev_index_head) - goto free_charge; + return -ENOMEM; spin_lock_init(&dtab->index_lock); } else { @@ -157,14 +147,10 @@ static int dev_map_init_map(struct bpf_dtab *dtab, union bpf_attr *attr) sizeof(struct bpf_dtab_netdev *), dtab->map.numa_node); if (!dtab->netdev_map) - goto free_charge; + return -ENOMEM; } return 0; - -free_charge: - bpf_map_charge_finish(&dtab->map.memory); - return -ENOMEM; } static struct bpf_map *dev_map_alloc(union bpf_attr *attr)