From patchwork Tue Dec 1 21:58:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Gushchin X-Patchwork-Id: 11944083 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=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 74C96C64E7B for ; Tue, 1 Dec 2020 21:59:59 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id EC50020870 for ; Tue, 1 Dec 2020 21:59:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="S2XO3Jl9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EC50020870 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 4816C8D0018; Tue, 1 Dec 2020 16:59:20 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id DF3D28D0017; Tue, 1 Dec 2020 16:59:19 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7CD4B8D001A; Tue, 1 Dec 2020 16:59:19 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0196.hostedemail.com [216.40.44.196]) by kanga.kvack.org (Postfix) with ESMTP id 1392D8D001A for ; Tue, 1 Dec 2020 16:59:19 -0500 (EST) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id CDBFE3638 for ; Tue, 1 Dec 2020 21:59:18 +0000 (UTC) X-FDA: 77546079996.15.verse13_6308de0273ad Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin15.hostedemail.com (Postfix) with ESMTP id AC40D1814B0C1 for ; Tue, 1 Dec 2020 21:59:18 +0000 (UTC) X-HE-Tag: verse13_6308de0273ad X-Filterd-Recvd-Size: 5375 Received: from mx0b-00082601.pphosted.com (mx0b-00082601.pphosted.com [67.231.153.30]) by imf17.hostedemail.com (Postfix) with ESMTP for ; Tue, 1 Dec 2020 21:59:18 +0000 (UTC) Received: from pps.filterd (m0109332.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0B1LnrGj027045 for ; Tue, 1 Dec 2020 13:59:17 -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=qv7u9pgKM1IaEL/9R8FyK1U0f8Edl2kNPpQ1h+UdbI4=; b=S2XO3Jl9nL/HERFtHKDZPtqnpQfe5wtYQUSqc1Cv0I8Hdex1+vws1vPFaE5wmz893axa qeIukURnk7XiLlpvyA6+l9ym6zufrfu0BwYnk+HMhNoUdkVdYLoJJmc7V8Bt7RxtbBgL wvwaFsC8oQDos1x6xneLwpSV4GE7kxXbeiM= Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com with ESMTP id 355vfk0t9t-5 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 01 Dec 2020 13:59:17 -0800 Received: from intmgw002.41.prn1.facebook.com (2620:10d:c085:108::8) by mail.thefacebook.com (2620:10d:c085:11d::5) 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 13:59:09 -0800 Received: by devvm3388.prn0.facebook.com (Postfix, from userid 111017) id A15E519702C8; Tue, 1 Dec 2020 13:59:06 -0800 (PST) From: Roman Gushchin To: CC: , , , , , , , Subject: [PATCH bpf-next v9 21/34] bpf: eliminate rlimit-based memory accounting for cgroup storage maps Date: Tue, 1 Dec 2020 13:58:47 -0800 Message-ID: <20201201215900.3569844-22-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 phishscore=0 adultscore=0 clxscore=1015 priorityscore=1501 mlxscore=0 bulkscore=0 lowpriorityscore=0 mlxlogscore=999 malwarescore=0 spamscore=0 suspectscore=38 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012010131 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 cgroup storage maps. It has been replaced with the memcg-based memory accounting. Signed-off-by: Roman Gushchin Acked-by: Song Liu --- kernel/bpf/local_storage.c | 21 +-------------------- 1 file changed, 1 insertion(+), 20 deletions(-) diff --git a/kernel/bpf/local_storage.c b/kernel/bpf/local_storage.c index 74dcee8926e5..2d4f9ac12377 100644 --- a/kernel/bpf/local_storage.c +++ b/kernel/bpf/local_storage.c @@ -287,8 +287,6 @@ static struct bpf_map *cgroup_storage_map_alloc(union bpf_attr *attr) { int numa_node = bpf_map_attr_numa_node(attr); struct bpf_cgroup_storage_map *map; - struct bpf_map_memory mem; - int ret; if (attr->key_size != sizeof(struct bpf_cgroup_storage_key) && attr->key_size != sizeof(__u64)) @@ -308,18 +306,10 @@ static struct bpf_map *cgroup_storage_map_alloc(union bpf_attr *attr) /* max_entries is not used and enforced to be 0 */ return ERR_PTR(-EINVAL); - ret = bpf_map_charge_init(&mem, sizeof(struct bpf_cgroup_storage_map)); - if (ret < 0) - return ERR_PTR(ret); - map = kmalloc_node(sizeof(struct bpf_cgroup_storage_map), __GFP_ZERO | GFP_USER | __GFP_ACCOUNT, numa_node); - if (!map) { - bpf_map_charge_finish(&mem); + if (!map) return ERR_PTR(-ENOMEM); - } - - bpf_map_charge_move(&map->map.memory, &mem); /* copy mandatory map attributes */ bpf_map_init_from_attr(&map->map, attr); @@ -508,9 +498,6 @@ struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(struct bpf_prog *prog, size = bpf_cgroup_storage_calculate_size(map, &pages); - if (bpf_map_charge_memlock(map, pages)) - return ERR_PTR(-EPERM); - storage = bpf_map_kmalloc_node(map, sizeof(struct bpf_cgroup_storage), gfp, map->numa_node); if (!storage) @@ -533,7 +520,6 @@ struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(struct bpf_prog *prog, return storage; enomem: - bpf_map_uncharge_memlock(map, pages); kfree(storage); return ERR_PTR(-ENOMEM); } @@ -560,16 +546,11 @@ void bpf_cgroup_storage_free(struct bpf_cgroup_storage *storage) { enum bpf_cgroup_storage_type stype; struct bpf_map *map; - u32 pages; if (!storage) return; map = &storage->map->map; - - bpf_cgroup_storage_calculate_size(map, &pages); - bpf_map_uncharge_memlock(map, pages); - stype = cgroup_storage_type(map); if (stype == BPF_CGROUP_STORAGE_SHARED) call_rcu(&storage->rcu, free_shared_cgroup_storage_rcu);