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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 72598C4332F for ; Wed, 16 Mar 2022 15:09:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237562AbiCPPKe (ORCPT ); Wed, 16 Mar 2022 11:10:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44316 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357021AbiCPPKW (ORCPT ); Wed, 16 Mar 2022 11:10:22 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 72CE2673E1 for ; Wed, 16 Mar 2022 08:09:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1647443346; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=q3DnrzNIWK5lpwiizhurtr0FleyyyipHQEpXQTzwkW4=; b=OrZIWuS7OrW5YXzYwGe7r897ZHBIZIrokAXDEffnHcAhPhO1zNCXvaJsXQ3sBFQ52VA67Y +dAd5EUCUc8qUIKJ69mHC2EYvQ8yJajUctSkh6KtHouRByAhYXlF47I8QRbkah4MR87gtg 4snVMTYjxjxj7/HxrSkhVyCOuksybR0= Received: from mail-wr1-f70.google.com (mail-wr1-f70.google.com [209.85.221.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-10-BYDh9V_BPV-cnrEAKuledg-1; Wed, 16 Mar 2022 11:09:05 -0400 X-MC-Unique: BYDh9V_BPV-cnrEAKuledg-1 Received: by mail-wr1-f70.google.com with SMTP id p18-20020adfba92000000b001e8f7697cc7so655096wrg.20 for ; Wed, 16 Mar 2022 08:09:04 -0700 (PDT) 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:to:cc:references:from:organization:in-reply-to :content-transfer-encoding; bh=q3DnrzNIWK5lpwiizhurtr0FleyyyipHQEpXQTzwkW4=; b=SdCZMobSV/lbWIEuIC2ZeYgSLMX8A4d3mpCPw3zO3GSVY7Cn4G0nPfnShY4dC1wtc0 exmVHMjXdQ6YCGs48E3VHr/5CYpCg+jeHQr8bMorhzRxRDyYT1C4jBuAOCYQw2rkew3g opyp+H1Lqzwqi+TRhOOZAHif/DhOaImqzdMcpwa/iM43VrFGHhLjUR7NQECPeUCg7veo PajObFmyoLtsLWMGgKv1KqgwY01OXNFLpZ3h3Go4mvLlIz6cWZhdpz9MRVLgr9y/6bbB CTZ2EdbnMilwKQoH0Ue9VEdXTlIvK+SE6H8YeVRf5/7ayYuHVM1IzCuAqHB1nQkk0PVq IyQQ== X-Gm-Message-State: AOAM532qzuXk79iQVL+Js1mKZvgOPgw8VvPlk3UoNBb0H0phI/wHuVXg fNM17OuPSWgqvPMG00ek7JDpojgWkFCS5J122yG42n3s7lxP4OPfBA+oxQ858QoiQBcrruIW2Fu hM1Xjqy2uT8IPAi8xntP1uNDh X-Received: by 2002:a5d:4487:0:b0:1f1:232b:794f with SMTP id j7-20020a5d4487000000b001f1232b794fmr282045wrq.715.1647443343781; Wed, 16 Mar 2022 08:09:03 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwdGMAOtiEgH+F8EM8SK3ODiymGuIa/tjM0Wd/84EkJ4ZNTP9/YNOOhdV9pi6WwJFJAXQUx6g== X-Received: by 2002:a5d:4487:0:b0:1f1:232b:794f with SMTP id j7-20020a5d4487000000b001f1232b794fmr282025wrq.715.1647443343525; Wed, 16 Mar 2022 08:09:03 -0700 (PDT) Received: from ?IPV6:2003:cb:c706:f900:aa79:cd25:e0:32d1? (p200300cbc706f900aa79cd2500e032d1.dip0.t-ipconnect.de. [2003:cb:c706:f900:aa79:cd25:e0:32d1]) by smtp.gmail.com with ESMTPSA id z2-20020a056000110200b001e7140ddb44sm1849465wrw.49.2022.03.16.08.09.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 16 Mar 2022 08:09:03 -0700 (PDT) Message-ID: Date: Wed, 16 Mar 2022 16:09:02 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.6.2 Subject: Re: [RFC PATCH V1 0/3] mm/damon: Add CMA minotor support Content-Language: en-US To: Xin Hao , sj@kernel.org Cc: rongwei.wang@linux.alibaba.com, akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org References: From: David Hildenbrand Organization: Red Hat In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 15.03.22 17:37, Xin Hao wrote: s/minotor/monitor/ > The purpose of these patches is to add CMA memory monitoring function. > In some memory tight scenarios, it will be a good choice to release more > memory by monitoring the CMA memory. I'm sorry, but it's hard to figure out what the target use case should be. Who will release CMA memory and how? Who will monitor that? What are the "some memory tight scenarios"? What's the overall design goal? -- Thanks, David / dhildenb