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=-16.7 required=3.0 tests=BAYES_00, 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 9113EC433B4 for ; Mon, 5 Apr 2021 18:09:06 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 3F30F61246 for ; Mon, 5 Apr 2021 18:09:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3F30F61246 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2BDA16B007D; Mon, 5 Apr 2021 14:09:05 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 226036B007E; Mon, 5 Apr 2021 14:09:05 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E80076B0080; Mon, 5 Apr 2021 14:09:04 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0254.hostedemail.com [216.40.44.254]) by kanga.kvack.org (Postfix) with ESMTP id B9EFC6B007D for ; Mon, 5 Apr 2021 14:09:04 -0400 (EDT) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 72DAB1801682C for ; Mon, 5 Apr 2021 18:09:04 +0000 (UTC) X-FDA: 77999099808.06.4F7DEDD Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by imf06.hostedemail.com (Postfix) with ESMTP id BD65DC0007CA for ; Mon, 5 Apr 2021 18:09:04 +0000 (UTC) IronPort-SDR: 9Z4wcZahSPZPIPf3HVYP2RXMZhidpAPizeEidLVAouLR+eHUHqSAa2RRUaqtllUBe9YGkFtu9R c4j9i7Hhs3Eg== X-IronPort-AV: E=McAfee;i="6000,8403,9945"; a="172968207" X-IronPort-AV: E=Sophos;i="5.81,307,1610438400"; d="scan'208";a="172968207" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Apr 2021 11:09:03 -0700 IronPort-SDR: +VoR0p/UgOe2wYsmoXbNkTgi4fj3Sr4bGRZZcdv98Loe80ptqI4Vscp6yUH/RbLdEo6Zw+pzm4 zinar7ufsiag== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,307,1610438400"; d="scan'208";a="448153903" Received: from skl-02.jf.intel.com ([10.54.74.28]) by fmsmga002.fm.intel.com with ESMTP; 05 Apr 2021 11:09:03 -0700 From: Tim Chen To: Michal Hocko Cc: Tim Chen , Johannes Weiner , Andrew Morton , Dave Hansen , Ying Huang , Dan Williams , David Rientjes , Shakeel Butt , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH v1 04/11] mm: Report top tier memory usage in sysfs Date: Mon, 5 Apr 2021 10:08:28 -0700 Message-Id: <1196182bf902e36c8ecbf2afb7dd570e96c99ff4.1617642417.git.tim.c.chen@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: BD65DC0007CA X-Stat-Signature: qo8bc88p6fmo3joxom7q3i5h4pi9got5 Received-SPF: none (linux.intel.com>: No applicable sender policy available) receiver=imf06; identity=mailfrom; envelope-from=""; helo=mga17.intel.com; client-ip=192.55.52.151 X-HE-DKIM-Result: none/none X-HE-Tag: 1617646144-750397 Content-Transfer-Encoding: quoted-printable 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: In memory cgroup's sysfs, report the memory cgroup's usage of top tier memory in a new field: "toptier_usage_in_bytes". Signed-off-by: Tim Chen --- mm/memcontrol.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index fe7bb8613f5a..68590f46fa76 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3631,6 +3631,7 @@ enum { RES_FAILCNT, RES_SOFT_LIMIT, RES_TOPTIER_SOFT_LIMIT, + RES_TOPTIER_USAGE, }; =20 static u64 mem_cgroup_read_u64(struct cgroup_subsys_state *css, @@ -3673,6 +3674,8 @@ static u64 mem_cgroup_read_u64(struct cgroup_subsys= _state *css, return (u64)memcg->soft_limit * PAGE_SIZE; case RES_TOPTIER_SOFT_LIMIT: return (u64)memcg->toptier_soft_limit * PAGE_SIZE; + case RES_TOPTIER_USAGE: + return (u64)page_counter_read(&memcg->toptier) * PAGE_SIZE; default: BUG(); } @@ -5073,6 +5076,11 @@ static struct cftype mem_cgroup_legacy_files[] =3D= { .write =3D mem_cgroup_write, .read_u64 =3D mem_cgroup_read_u64, }, + { + .name =3D "toptier_usage_in_bytes", + .private =3D MEMFILE_PRIVATE(_MEM, RES_TOPTIER_USAGE), + .read_u64 =3D mem_cgroup_read_u64, + }, { .name =3D "failcnt", .private =3D MEMFILE_PRIVATE(_MEM, RES_FAILCNT), --=20 2.20.1