From patchwork Tue Jun 14 22:25:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tim Chen X-Patchwork-Id: 12881656 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 E839EC433EF for ; Tue, 14 Jun 2022 22:26:16 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 60A326B0074; Tue, 14 Jun 2022 18:26:16 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5A1AB6B007B; Tue, 14 Jun 2022 18:26:16 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 46A316B0078; Tue, 14 Jun 2022 18:26:16 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 28FC66B0073 for ; Tue, 14 Jun 2022 18:26:16 -0400 (EDT) Received: from smtpin02.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id F1C643509B for ; Tue, 14 Jun 2022 22:26:15 +0000 (UTC) X-FDA: 79578275910.02.91CE91F Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by imf18.hostedemail.com (Postfix) with ESMTP id 5AD041C0090 for ; Tue, 14 Jun 2022 22:26:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1655245575; x=1686781575; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=1DtxFR7jESUt0Tg8UteAbb/krwgxdAsTgRC8kfkXIEY=; b=LFJw5xg0UvGl53mVhhjL+H+1TjC9kMvK9HIYkoa7zncudrPadScmvuGQ bOWewFcrD0TOio07560xYyxnMpp8JOhPbZBAcxIHLkZgPnhqU3B1GEf4K Co8VUiX412xRTRoYW4rIscELtOtY+mU2lfUvnuRSfwJ7ZMk9f8VyDvrN0 58AXZgiYPv75ddxi1GVuZjqbMnB8eiOuzq8UpgtRJ1j3k+EYhnbeAMtH1 WxjvysfnYcnRWLZn8uzak8Z3B85SpiGER4zgXGpHy0jHaqI3DczzT7oEq Ju5NrLSdo3sRtLJ52fxTDF1Lb2IDujng+OkOw1D3G5idBpjILqJ8Aws9O Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10378"; a="261787298" X-IronPort-AV: E=Sophos;i="5.91,300,1647327600"; d="scan'208";a="261787298" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jun 2022 15:26:14 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,300,1647327600"; d="scan'208";a="588724739" Received: from b04f130c83f2.jf.intel.com ([10.165.154.98]) by fmsmga007.fm.intel.com with ESMTP; 14 Jun 2022 15:26:13 -0700 From: Tim Chen To: linux-mm@kvack.org, akpm@linux-foundation.org Cc: Tim Chen , Wei Xu , Huang Ying , Greg Thelen , Yang Shi , Davidlohr Bueso , Brice Goglin , Michal Hocko , Linux Kernel Mailing List , Hesham Almatary , Dave Hansen , Jonathan Cameron , Alistair Popple , Dan Williams , Feng Tang , Jagdish Gediya , Baolin Wang , David Rientjes , "Aneesh Kumar K . V" , Shakeel Butt Subject: [RFC PATCH 3/3] mm/memory-tiers: Show toptier memory usage for cgroup Date: Tue, 14 Jun 2022 15:25:35 -0700 Message-Id: <766f5858d5427c0345a7bd55a16733b39022095c.1655242024.git.tim.c.chen@linux.intel.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: References: MIME-Version: 1.0 ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1655245575; a=rsa-sha256; cv=none; b=8r1VCY+gT+KwBJcC8HOi6L7fSDKr5jYWzUeGCOQ/QX+zDYipVdb13MgAdsWfjkMUAAHFyV jFhpIp1l3j6rOwazcECFBFnJgQIA2C68u8QLiDVFZT0PGv2heUT03meD0epladop+OR2NZ nv+V71xG0TZtCXNqWzyblIpFZxysDH0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1655245575; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=fhVi2tMZpvXpC5v0/AIMzwxeKRpzjwG4U4hWJ4YBWMc=; b=SLkoc2i4zHfKwrlVs4PAP7iVjPOqamZxIlJYFy9QONnLWyY4hhYo7VgKrB3HZaW50dqKWF a917BRy8N4J5bURYnIN6uk/YXIn5IJ3ON9M3trYYevhs/uOgxtg3w4AcX4Ste2EWLvFq1e Yqrr5AZnDp2uWNUHAFWub9Q3Myhncsc= ARC-Authentication-Results: i=1; imf18.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=LFJw5xg0; dmarc=pass (policy=none) header.from=intel.com; spf=none (imf18.hostedemail.com: domain of tim.c.chen@linux.intel.com has no SPF policy when checking 134.134.136.126) smtp.mailfrom=tim.c.chen@linux.intel.com Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=LFJw5xg0; dmarc=pass (policy=none) header.from=intel.com; spf=none (imf18.hostedemail.com: domain of tim.c.chen@linux.intel.com has no SPF policy when checking 134.134.136.126) smtp.mailfrom=tim.c.chen@linux.intel.com X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 5AD041C0090 X-Stat-Signature: hcjqsr4no7r11hr8mpmkatsy54zo7r9w X-HE-Tag: 1655245575-149511 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: Show toptier memory usage for a cgroup via sysfs: /sys/fs/cgroup//memory.toptier --- mm/memcontrol.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 2f20ec2712b8..5fd1e3b686cd 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -6205,6 +6205,14 @@ static u64 memory_current_read(struct cgroup_subsys_state *css, return (u64)page_counter_read(&memcg->memory) * PAGE_SIZE; } +static u64 memory_toptier_read(struct cgroup_subsys_state *css, + struct cftype *cft) +{ + struct mem_cgroup *memcg = mem_cgroup_from_css(css); + + return (u64)mem_cgroup_toptier_usage(memcg) * PAGE_SIZE; +} + static u64 memory_peak_read(struct cgroup_subsys_state *css, struct cftype *cft) { @@ -6516,6 +6524,11 @@ static struct cftype memory_files[] = { .flags = CFTYPE_NOT_ON_ROOT, .read_u64 = memory_current_read, }, + { + .name = "toptier", + .flags = CFTYPE_NOT_ON_ROOT, + .read_u64 = memory_toptier_read, + }, { .name = "peak", .flags = CFTYPE_NOT_ON_ROOT,