From patchwork Thu Nov 19 17:37:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Gushchin X-Patchwork-Id: 11918557 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,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 2D3F9C63697 for ; Thu, 19 Nov 2020 17:39:02 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 92B7624698 for ; Thu, 19 Nov 2020 17:39:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="Cmhswu7S" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 92B7624698 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 74B1E6B00A5; Thu, 19 Nov 2020 12:38:23 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 685BC6B00A7; Thu, 19 Nov 2020 12:38:23 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 419016B00A9; Thu, 19 Nov 2020 12:38:23 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0126.hostedemail.com [216.40.44.126]) by kanga.kvack.org (Postfix) with ESMTP id F1FF26B00A5 for ; Thu, 19 Nov 2020 12:38:22 -0500 (EST) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 9FA763648 for ; Thu, 19 Nov 2020 17:38:22 +0000 (UTC) X-FDA: 77501876844.11.oil94_4b12d9a27344 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin11.hostedemail.com (Postfix) with ESMTP id EFA40180F8BA3 for ; Thu, 19 Nov 2020 17:38:16 +0000 (UTC) X-HE-Tag: oil94_4b12d9a27344 X-Filterd-Recvd-Size: 4095 Received: from mx0a-00082601.pphosted.com (mx0a-00082601.pphosted.com [67.231.145.42]) by imf09.hostedemail.com (Postfix) with ESMTP for ; Thu, 19 Nov 2020 17:38:16 +0000 (UTC) Received: from pps.filterd (m0044012.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0AJHUjCK024652 for ; Thu, 19 Nov 2020 09:38:15 -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=LTLQPyjn9AU74KKeleForoHMcwhDRBWJSiJ+HSA8Smc=; b=Cmhswu7SdzqeUgjJUlgDdO/vAHYrjChrkNRZYmG2HHVazyYGfwYEm6VCRcLLY8TrCVhq 6gWExz0Ja6EuWaQzq4ojMV7rvWesFT5a63C2QazoWwCyEwL2M8XOHU7rGhimgIkvcM0s HtbxjZuAPUJN/fEXeaI7SrO+bKZ/jpZZ7Gg= Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com with ESMTP id 34wgckp8ya-8 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Thu, 19 Nov 2020 09:38:15 -0800 Received: from intmgw001.41.prn1.facebook.com (2620:10d:c085:208::11) by mail.thefacebook.com (2620:10d:c085:21d::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 19 Nov 2020 09:38:04 -0800 Received: by devvm3388.prn0.facebook.com (Postfix, from userid 111017) id E78DF145BD07; Thu, 19 Nov 2020 09:37:56 -0800 (PST) From: Roman Gushchin To: CC: , , , , , , , Subject: [PATCH bpf-next v7 24/34] bpf: eliminate rlimit-based memory accounting for lpm_trie maps Date: Thu, 19 Nov 2020 09:37:44 -0800 Message-ID: <20201119173754.4125257-25-guro@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20201119173754.4125257-1-guro@fb.com> References: <20201119173754.4125257-1-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=2020-11-19_09:2020-11-19,2020-11-19 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 malwarescore=0 mlxscore=0 suspectscore=38 clxscore=1015 adultscore=0 spamscore=0 impostorscore=0 lowpriorityscore=0 bulkscore=0 priorityscore=1501 mlxlogscore=711 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011190125 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 lpm_trie maps. It has been replaced with the memcg-based memory accounting. Signed-off-by: Roman Gushchin Acked-by: Song Liu --- kernel/bpf/lpm_trie.c | 13 ------------- 1 file changed, 13 deletions(-) diff --git a/kernel/bpf/lpm_trie.c b/kernel/bpf/lpm_trie.c index a7d1e5cb80da..65757321ddf8 100644 --- a/kernel/bpf/lpm_trie.c +++ b/kernel/bpf/lpm_trie.c @@ -541,8 +541,6 @@ static int trie_delete_elem(struct bpf_map *map, void *_key) static struct bpf_map *trie_alloc(union bpf_attr *attr) { struct lpm_trie *trie; - u64 cost = sizeof(*trie), cost_per_node; - int ret; if (!bpf_capable()) return ERR_PTR(-EPERM); @@ -568,20 +566,9 @@ static struct bpf_map *trie_alloc(union bpf_attr *attr) offsetof(struct bpf_lpm_trie_key, data); trie->max_prefixlen = trie->data_size * 8; - cost_per_node = sizeof(struct lpm_trie_node) + - attr->value_size + trie->data_size; - cost += (u64) attr->max_entries * cost_per_node; - - ret = bpf_map_charge_init(&trie->map.memory, cost); - if (ret) - goto out_err; - spin_lock_init(&trie->lock); return &trie->map; -out_err: - kfree(trie); - return ERR_PTR(ret); } static void trie_free(struct bpf_map *map)