From patchwork Wed Nov 25 03:01:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Gushchin X-Patchwork-Id: 332834 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=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 DC0A3C83026 for ; Wed, 25 Nov 2020 03:02:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 924322087C for ; Wed, 25 Nov 2020 03:02:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="mglrNpP5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727533AbgKYDBe (ORCPT ); Tue, 24 Nov 2020 22:01:34 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:32770 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727434AbgKYDBc (ORCPT ); Tue, 24 Nov 2020 22:01:32 -0500 Received: from pps.filterd (m0044010.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0AP31RYt027593 for ; Tue, 24 Nov 2020 19:01:32 -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=TnExbMUogzHd8p7IQb5z0S0wFoIvqXTWgF/AVE8fTrA=; b=mglrNpP5xIu3ZAvZTCaVqAYaMsw9Zd8NrBsEL6T0EMI2iEehQltSZ36hGY9ByBHF9kIg Zmniy6oi30kCzLK8CeBGoWE4ruWEmt7XGWE22a98j1yyBb5DxcHfQvXgT+GOTelxjAwi gC3Xg8is7CK1fx9rygvOJoCpfaR3MpFkJgg= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 34yk9gcp3f-10 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 24 Nov 2020 19:01:32 -0800 Received: from intmgw001.41.prn1.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:83::4) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Tue, 24 Nov 2020 19:01:27 -0800 Received: by devvm3388.prn0.facebook.com (Postfix, from userid 111017) id 7E0D416A18BF; Tue, 24 Nov 2020 19:01:22 -0800 (PST) From: Roman Gushchin To: CC: , , , , , , , Subject: [PATCH bpf-next v8 31/34] bpf: eliminate rlimit-based memory accounting for bpf local storage maps Date: Tue, 24 Nov 2020 19:01:16 -0800 Message-ID: <20201125030119.2864302-32-guro@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20201125030119.2864302-1-guro@fb.com> References: <20201125030119.2864302-1-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=2020-11-24_11:2020-11-24,2020-11-24 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 clxscore=1015 suspectscore=13 malwarescore=0 adultscore=0 priorityscore=1501 phishscore=0 spamscore=0 lowpriorityscore=0 bulkscore=0 mlxlogscore=663 impostorscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011250019 X-FB-Internal: deliver Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org 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 | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/kernel/bpf/bpf_local_storage.c b/kernel/bpf/bpf_local_storage.c index abd0ea385274..0875bb46e96b 100644 --- a/kernel/bpf/bpf_local_storage.c +++ b/kernel/bpf/bpf_local_storage.c @@ -547,8 +547,6 @@ 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) @@ -559,18 +557,9 @@ 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); }