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=-8.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_MUTT 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 BCD6BC00319 for ; Mon, 18 Feb 2019 21:05:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8CAC5217F5 for ; Mon, 18 Feb 2019 21:05:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550523910; bh=0S5RmvtPqeOlPvpujiIlt1lkrJqxcl7eMboUeLuz6hQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=hBidG1x6DhnZQODgANi4VJbCq7u8g0/oGg2ME9Ol4Npp/g/rBaO4Y6oonFkd4lmD7 YMOz563JS8sHa1Xw3IekR6PyPTyoszUtWVad+rRG7glq9KtQ8XVnrISU1CYcP5e3Sc ZMsJKhjVO8wrzCjnYUyEsapKi9JeKl5SSnKC6D+Y= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727084AbfBRVFI (ORCPT ); Mon, 18 Feb 2019 16:05:08 -0500 Received: from mail-yb1-f195.google.com ([209.85.219.195]:40038 "EHLO mail-yb1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725806AbfBRVFI (ORCPT ); Mon, 18 Feb 2019 16:05:08 -0500 Received: by mail-yb1-f195.google.com with SMTP id k2so2812437ybk.7; Mon, 18 Feb 2019 13:05:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=9DzCR79XKeIjL7+2ReBiux03I1IsbcYYGjv2zjhhJ2U=; b=IvUXzBPQJEIyKxoXbz4dX0We4ImmqwmBbZb8b00WHoEnhmrQvX86N2WSx0rP1NzXFS uwDuVGKTJxW0Bg0RNeRMY2lqSxHlylMUB1QW2kusIPBR/1eSRw3pLDFw0DxTiX4xKIJH HI39c8dzh86yRNfROF1J4MTzi+z8cRaElf9D2wcp1bxf3Ak2psiTe3TVvbaMcSCeL0xz 0v5+CKY58TFKGjYiJixaNyF/JCodpDsL5qER8CF0AdDGaUzq7o2WyEBYDVhxhqSvThX0 wA2HOyR7hXaqWcIJ88Uhcpnx5RhK0K7pvEyKDaPBn85ZliSQTNNAHNknlI/GapPFjD4Q 6KrA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=9DzCR79XKeIjL7+2ReBiux03I1IsbcYYGjv2zjhhJ2U=; b=fAjXG5EPieHnFU3rj4Lxpyo+xZrUGBpAwhweIXbpCdlsECn6Yk/DHeuqCfqlXCMLeL Pgpw8NkuRF/APaJnw3a5iNgZufq5GYLbmEt3tpa7FcYOlHuD9Vwy1+VuVWD64uXNgNF+ iGdH1Dsu1TToiArwa1iA0VHsQyJgty3o5WSEMt6ezAJjVcTQcQnDLBvfNaHcbonyDlDF Vo0KVaWtLOu63le8q4fZ0UcIAAmNp6aO14buu6VQM4fhqWKe4UUNTgwx1r4xJhGgu48P csdwpgFfXDM7NHo5wrcz+rDJtCcOiXEJrRf4pReI91KH6DujDQqyDUji0r5uuvwPgVPn Hu4A== X-Gm-Message-State: AHQUAuawwd308SEUAbNwK99tMu4kZ8JDG/qzK22IaKPrrguSMQ53wHXk v3snoS5/ro8wXtN+1I68F+k= X-Google-Smtp-Source: AHgI3IZQ85hICO8PJBHbJ2RZysx/uNUHQA80/Hg8S4A0SZHPMgNXU2TbgLlCgJHTrnqFDEdrI6avxw== X-Received: by 2002:a25:d04b:: with SMTP id h72mr15655803ybg.152.1550523907337; Mon, 18 Feb 2019 13:05:07 -0800 (PST) Received: from localhost ([2620:10d:c091:200::5:2c70]) by smtp.gmail.com with ESMTPSA id z23sm7007499ywj.36.2019.02.18.13.05.06 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 18 Feb 2019 13:05:06 -0800 (PST) Date: Mon, 18 Feb 2019 13:05:04 -0800 From: Tejun Heo To: Yang Shi Cc: hannes@cmpxchg.org, corbet@lwn.net, cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] doc: cgroup: correct the wrong information about measure of memory pressure Message-ID: <20190218210504.GT50184@devbig004.ftw2.facebook.com> References: <1550278564-81540-1-git-send-email-yang.shi@linux.alibaba.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1550278564-81540-1-git-send-email-yang.shi@linux.alibaba.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Feb 16, 2019 at 08:56:04AM +0800, Yang Shi wrote: > Since PSI has implemented some kind of measure of memory pressure, the > statement about lack of such measure is not true anymore. > > Cc: Tejun Heo > Cc: Johannes Weiner > Cc: Jonathan Corbet > Signed-off-by: Yang Shi > --- > Documentation/admin-guide/cgroup-v2.rst | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst > index 7bf3f12..9a92013 100644 > --- a/Documentation/admin-guide/cgroup-v2.rst > +++ b/Documentation/admin-guide/cgroup-v2.rst > @@ -1310,8 +1310,7 @@ network to a file can use all available memory but can also operate as > performant with a small amount of memory. A measure of memory > pressure - how much the workload is being impacted due to lack of > memory - is necessary to determine whether a workload needs more > -memory; unfortunately, memory pressure monitoring mechanism isn't > -implemented yet. > +memory. Maybe refer to PSI? Thanks. -- tejun