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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38BE6C433F5 for ; Sat, 21 May 2022 17:58:41 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 7329D6B0072; Sat, 21 May 2022 13:58:40 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6BB086B0073; Sat, 21 May 2022 13:58:40 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 534E66B0074; Sat, 21 May 2022 13:58:40 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 3F3A46B0072 for ; Sat, 21 May 2022 13:58:40 -0400 (EDT) Received: from smtpin05.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 1724D208FE for ; Sat, 21 May 2022 17:58:40 +0000 (UTC) X-FDA: 79490510400.05.6A550EA Received: from mail-lf1-f49.google.com (mail-lf1-f49.google.com [209.85.167.49]) by imf08.hostedemail.com (Postfix) with ESMTP id ABEE4160017 for ; Sat, 21 May 2022 17:58:19 +0000 (UTC) Received: by mail-lf1-f49.google.com with SMTP id l13so12514244lfp.11 for ; Sat, 21 May 2022 10:58:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=openvz-org.20210112.gappssmtp.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language :from:to:cc:references:in-reply-to:content-transfer-encoding; bh=Q66Lzs3M5kOo/8VJybpmTwF9IYF2g+3dQsdn1hpx9NQ=; b=QCTfmXQGadwwlQM7hEIdm50KOXHwYga0OF/NGlbgOk3004UEHV2j12kft+vGwKwWir wRilZT8O9unVC1Xau1Q/xJ/oXjKUn097Ca9N477mVVb4T+K+qMPT9zUfhK0U696onLrH 0os54gYtDt7QmTh2QJVp0zVX+VOwBBN3tTEji9jfwScy0wauB/MKvMR9weEQeZu99gcl S6q0/FQT5dVQFSiYwCJOEzJUVh2eXtxNXRkNhlzUj8VPMJ4+JVhxhMspOoclfnBCfr0o JdQNunNe+PYOALJWx7fSQNgpOjodEVLFipBmw9+pinSFfPkeFtfzzVFHvhyVXcuEKFmZ Cu/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:from:to:cc:references:in-reply-to :content-transfer-encoding; bh=Q66Lzs3M5kOo/8VJybpmTwF9IYF2g+3dQsdn1hpx9NQ=; b=7oIVSnK79+jefxAG2shvUGMG4+WGWelOjDwFjzXBbX+4qWsceEpdEUVPptCs2awvDi 9QoCt+NdY9wSTL2znmjSdKoIIdzsFWyaKZ6v+oGctBqJA4twlE35pWwqjRH+C7MYHjfN hY6YZT65Oe+f3DDzU1cX3P0ojjoS3z7eLFFw44OodbNXts2I0qEZfNa9c+UF85nS47T6 Kg7cKlX6XEV3BmLLPHi5l1W5hBAjvV4VX2hX5FnFck5et2qdl1tI1Q/1jKFrnqW4eBkF p1iMvgoVK4DDFZVth73jdMbgWxWxTnCOQVvTsydY45IGpbFeH1bSue3ju0Igvhg1iEDT dbxg== X-Gm-Message-State: AOAM530bqsev8iu0KhLw5fwfqDzDMWDarH3D9okOlrl4dLNden0ACTaD EOApovzD69ah140CGGj7g2OJdg== X-Google-Smtp-Source: ABdhPJyB9B+bG3bgVBta8/fXq6YFYitnbNXhL8nlLKB83LEun2rtCldE5J3VJc5xMYhCSzqLebY3cg== X-Received: by 2002:a05:6512:3403:b0:475:afe3:740b with SMTP id i3-20020a056512340300b00475afe3740bmr10998844lfr.436.1653155917305; Sat, 21 May 2022 10:58:37 -0700 (PDT) Received: from [192.168.1.65] ([46.188.121.185]) by smtp.gmail.com with ESMTPSA id r5-20020a2e94c5000000b0024f3d1dae91sm799624ljh.25.2022.05.21.10.58.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 21 May 2022 10:58:36 -0700 (PDT) Message-ID: <6c980ae0-9731-ba89-d04f-cd55a6badc24@openvz.org> Date: Sat, 21 May 2022 20:58:35 +0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.1 Subject: Re: [PATCH mm v2 6/9] memcg: enable accounting for percpu allocation of struct cgroup_rstat_cpu Content-Language: en-US From: Vasily Averin To: Andrew Morton Cc: kernel@openvz.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Shakeel Butt , Roman Gushchin , =?UTF-8?Q?Michal_Koutn=c3=bd?= , Vlastimil Babka , Michal Hocko , cgroups@vger.kernel.org References: In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: ABEE4160017 X-Stat-Signature: ew3t3hiwnahp4a9ja69dpdr6gigjzqtq Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=openvz-org.20210112.gappssmtp.com header.s=20210112 header.b=QCTfmXQG; dmarc=pass (policy=none) header.from=openvz.org; spf=pass (imf08.hostedemail.com: domain of vvs@openvz.org designates 209.85.167.49 as permitted sender) smtp.mailfrom=vvs@openvz.org X-Rspamd-Server: rspam04 X-HE-Tag: 1653155899-660641 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: On 5/21/22 19:38, Vasily Averin wrote: > struct cgroup_rstat_cpu is percpu allocated for each new cgroup and > can consume a significant portion of all allocated memory on nodes > with a large number of CPUs. > > Common part of the cgroup creation: > Allocs Alloc $1*$2 Sum Allocation > number size > -------------------------------------------- > 16 ~ 352 5632 5632 KERNFS > 1 + 4096 4096 9728 (cgroup_mkdir+0xe4) > 1 584 584 10312 (radix_tree_node_alloc.constprop.0+0x89) > 1 192 192 10504 (__d_alloc+0x29) > 2 72 144 10648 (avc_alloc_node+0x27) > 2 64 128 10776 (percpu_ref_init+0x6a) > 1 64 64 10840 (memcg_list_lru_alloc+0x21a) > percpu: > 1 + 192 192 192 call_site=psi_cgroup_alloc+0x1e > 1 + 96 96 288 call_site=cgroup_rstat_init+0x5f > 2 12 24 312 call_site=percpu_ref_init+0x23 > 1 6 6 318 call_site=__percpu_counter_init+0x22 > > '+' -- to be accounted, > '~' -- partially accounted > > Signed-off-by: Vasily Averin > --- > kernel/cgroup/rstat.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/kernel/cgroup/rstat.c b/kernel/cgroup/rstat.c > index 24b5c2ab5598..f76cb63ae2e0 100644 > --- a/kernel/cgroup/rstat.c > +++ b/kernel/cgroup/rstat.c > @@ -257,7 +257,8 @@ int cgroup_rstat_init(struct cgroup *cgrp) > > /* the root cgrp has rstat_cpu preallocated */ > if (!cgrp->rstat_cpu) { > - cgrp->rstat_cpu = alloc_percpu(struct cgroup_rstat_cpu); > + cgrp->rstat_cpu = alloc_percpu_gfp(struct cgroup_rstat_cpu "," was lost here > + GFP_KERNEL_ACCOUNT); > if (!cgrp->rstat_cpu) > return -ENOMEM; > }