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 6B303C64E75 for ; Tue, 17 Nov 2020 03:43:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 23D4E206C0 for ; Tue, 17 Nov 2020 03:43:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="H0SSAsik" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727843AbgKQDmc (ORCPT ); Mon, 16 Nov 2020 22:42:32 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:3756 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727181AbgKQDlU (ORCPT ); Mon, 16 Nov 2020 22:41:20 -0500 Received: from pps.filterd (m0148461.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0AH3cCx9024273 for ; Mon, 16 Nov 2020 19:41:20 -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=EbPWI8uXU5DI+ycWdCdtFEh/IbfL8Ny2eiIpejWlJl0=; b=H0SSAsika1MRI/ki4dCFgrVle+pI0cobiVZaV/VazcA8KqiULvNkoTQS16ff+MTuEqR9 c28HLvovmNQAtMox9s7b48YWGp2tgEN1Io0nz2rOK+H5uWlhblZTkJ4EFFfN1f4DkwzQ PTQOKO7SRoVLn/J29Vrl6BPLfVkAJxgxVPU= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 34uphj53p8-14 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Mon, 16 Nov 2020 19:41:20 -0800 Received: from intmgw003.06.prn3.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; Mon, 16 Nov 2020 19:41:13 -0800 Received: by devvm3388.prn0.facebook.com (Postfix, from userid 111017) id 7A59CC63A85; Mon, 16 Nov 2020 19:41:10 -0800 (PST) From: Roman Gushchin To: CC: , , , , , , , Subject: [PATCH bpf-next v6 23/34] bpf: eliminate rlimit-based memory accounting for hashtab maps Date: Mon, 16 Nov 2020 19:40:57 -0800 Message-ID: <20201117034108.1186569-24-guro@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20201117034108.1186569-1-guro@fb.com> References: <20201117034108.1186569-1-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=2020-11-17_01:2020-11-13,2020-11-17 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 mlxlogscore=899 priorityscore=1501 malwarescore=0 clxscore=1015 suspectscore=38 adultscore=0 spamscore=0 mlxscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011170027 X-FB-Internal: deliver Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Do not use rlimit-based memory accounting for hashtab maps. It has been replaced with the memcg-based memory accounting. Signed-off-by: Roman Gushchin Acked-by: Song Liu --- kernel/bpf/hashtab.c | 19 +------------------ 1 file changed, 1 insertion(+), 18 deletions(-) diff --git a/kernel/bpf/hashtab.c b/kernel/bpf/hashtab.c index d1fa61ab7c76..2ec635b76b33 100644 --- a/kernel/bpf/hashtab.c +++ b/kernel/bpf/hashtab.c @@ -443,7 +443,6 @@ static struct bpf_map *htab_map_alloc(union bpf_attr = *attr) bool prealloc =3D !(attr->map_flags & BPF_F_NO_PREALLOC); struct bpf_htab *htab; int err, i; - u64 cost; =20 htab =3D kzalloc(sizeof(*htab), GFP_USER | __GFP_ACCOUNT); if (!htab) @@ -481,26 +480,12 @@ static struct bpf_map *htab_map_alloc(union bpf_att= r *attr) htab->n_buckets > U32_MAX / sizeof(struct bucket)) goto free_htab; =20 - cost =3D (u64) htab->n_buckets * sizeof(struct bucket) + - (u64) htab->elem_size * htab->map.max_entries; - - if (percpu) - cost +=3D (u64) round_up(htab->map.value_size, 8) * - num_possible_cpus() * htab->map.max_entries; - else - cost +=3D (u64) htab->elem_size * num_possible_cpus(); - - /* if map size is larger than memlock limit, reject it */ - err =3D bpf_map_charge_init(&htab->map.memory, cost); - if (err) - goto free_htab; - err =3D -ENOMEM; htab->buckets =3D bpf_map_area_alloc(htab->n_buckets * sizeof(struct bucket), htab->map.numa_node); if (!htab->buckets) - goto free_charge; + goto free_htab; =20 for (i =3D 0; i < HASHTAB_MAP_LOCK_COUNT; i++) { htab->map_locked[i] =3D __alloc_percpu_gfp(sizeof(int), @@ -539,8 +524,6 @@ static struct bpf_map *htab_map_alloc(union bpf_attr = *attr) for (i =3D 0; i < HASHTAB_MAP_LOCK_COUNT; i++) free_percpu(htab->map_locked[i]); bpf_map_area_free(htab->buckets); -free_charge: - bpf_map_charge_finish(&htab->map.memory); free_htab: lockdep_unregister_key(&htab->lockdep_key); kfree(htab); --=20 2.26.2