From patchwork Tue Dec 1 21:58:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Gushchin X-Patchwork-Id: 11944165 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=-20.2 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 C720FC83014 for ; Tue, 1 Dec 2020 22:02:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8EB1420709 for ; Tue, 1 Dec 2020 22:02:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="hMC019JE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387409AbgLAWBp (ORCPT ); Tue, 1 Dec 2020 17:01:45 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:8662 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2390183AbgLAV74 (ORCPT ); Tue, 1 Dec 2020 16:59:56 -0500 Received: from pps.filterd (m0089730.ppops.net [127.0.0.1]) by m0089730.ppops.net (8.16.0.42/8.16.0.42) with SMTP id 0B1Lngkp006687 for ; Tue, 1 Dec 2020 13:59:15 -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=Jms4iN4LkY5fSza1QpUQYdQpgLTy9z09AGKYp2Ky3n0=; b=hMC019JEQcgXs0OUG/SnAK1AxuWWUZIhhV8Rvia4nYOLVxL+wJumU6dSdHWmMPHdXqNE v/XooUoVb76lDrSnhj2/63edGQMRFSQqZfSiElZnUvvJlvgbu1n0xv0bCfWojoFqgYnU Nx+HOF0Mt50zf0j9vC5zTwTst0EiyZO3+aA= Received: from mail.thefacebook.com ([163.114.132.120]) by m0089730.ppops.net with ESMTP id 355pr6kf7b-13 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 01 Dec 2020 13:59:15 -0800 Received: from intmgw002.41.prn1.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; Tue, 1 Dec 2020 13:59:10 -0800 Received: by devvm3388.prn0.facebook.com (Postfix, from userid 111017) id D2FEF19702DC; Tue, 1 Dec 2020 13:59:06 -0800 (PST) From: Roman Gushchin To: CC: , , , , , , , Subject: [PATCH bpf-next v9 31/34] bpf: eliminate rlimit-based memory accounting for bpf local storage maps Date: Tue, 1 Dec 2020 13:58:57 -0800 Message-ID: <20201201215900.3569844-32-guro@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20201201215900.3569844-1-guro@fb.com> References: <20201201215900.3569844-1-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=2020-12-01_11:2020-11-30,2020-12-01 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 malwarescore=0 priorityscore=1501 suspectscore=13 spamscore=0 adultscore=0 clxscore=1015 mlxlogscore=664 lowpriorityscore=0 mlxscore=0 phishscore=0 bulkscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012010131 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 bpf local storage maps. It has been replaced with the memcg-based memory accounting. Signed-off-by: Roman Gushchin Acked-by: Song Liu --- kernel/bpf/bpf_local_storage.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/kernel/bpf/bpf_local_storage.c b/kernel/bpf/bpf_local_storage.c index 023a3eaa4d74..dd5aedee99e7 100644 --- a/kernel/bpf/bpf_local_storage.c +++ b/kernel/bpf/bpf_local_storage.c @@ -545,8 +545,6 @@ struct bpf_local_storage_map *bpf_local_storage_map_alloc(union bpf_attr *attr) struct bpf_local_storage_map *smap; unsigned int i; u32 nbuckets; - u64 cost; - int ret; smap = kzalloc(sizeof(*smap), GFP_USER | __GFP_NOWARN | __GFP_ACCOUNT); if (!smap) @@ -557,18 +555,10 @@ struct bpf_local_storage_map *bpf_local_storage_map_alloc(union bpf_attr *attr) /* Use at least 2 buckets, select_bucket() is undefined behavior with 1 bucket */ nbuckets = max_t(u32, 2, nbuckets); smap->bucket_log = ilog2(nbuckets); - cost = sizeof(*smap->buckets) * nbuckets + sizeof(*smap); - - ret = bpf_map_charge_init(&smap->map.memory, cost); - if (ret < 0) { - kfree(smap); - return ERR_PTR(ret); - } smap->buckets = kvcalloc(sizeof(*smap->buckets), nbuckets, GFP_USER | __GFP_NOWARN | __GFP_ACCOUNT); if (!smap->buckets) { - bpf_map_charge_finish(&smap->map.memory); kfree(smap); return ERR_PTR(-ENOMEM); }