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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,URIBL_DBL_ABUSE_MALW,USER_AGENT_GIT autolearn=no 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 062CFC2D0DB for ; Wed, 29 Jan 2020 19:59:50 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B5BBF2067C for ; Wed, 29 Jan 2020 19:59:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="R40RTKe7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B5BBF2067C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 494BF6B0291; Wed, 29 Jan 2020 14:59:49 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 445566B0292; Wed, 29 Jan 2020 14:59:49 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3343F6B0293; Wed, 29 Jan 2020 14:59:49 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0020.hostedemail.com [216.40.44.20]) by kanga.kvack.org (Postfix) with ESMTP id 19F336B0291 for ; Wed, 29 Jan 2020 14:59:49 -0500 (EST) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id BA4D245BB for ; Wed, 29 Jan 2020 19:59:48 +0000 (UTC) X-FDA: 76431737256.29.grain36_8fcfbaeabf75c X-HE-Tag: grain36_8fcfbaeabf75c X-Filterd-Recvd-Size: 4247 Received: from mail-wr1-f68.google.com (mail-wr1-f68.google.com [209.85.221.68]) by imf50.hostedemail.com (Postfix) with ESMTP for ; Wed, 29 Jan 2020 19:59:48 +0000 (UTC) Received: by mail-wr1-f68.google.com with SMTP id m16so925914wrx.11 for ; Wed, 29 Jan 2020 11:59:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to; bh=KQIYlN5HOzFLhj5jtZda0TleOgpJJL47WY9lbMV5qaE=; b=R40RTKe7WBKBnBEp0jxvh939RGtvGnrdQ6+w2eJ9G3ZTyQm04eL1t1l8zGvypgaWEP ny4vpG+D418EgNv5qlyB2KYXj/ENl/0NIktSuYURCuX7G+n6zOmsT6o68lAstP3J0Wim /V7+yDVa4tAn50n8OEqPX8jRaLwq8zodDV4XFmpqVty7vgD/shUTJX4wbm/9Q7gjOCY3 VOEtrFELoH0qF1Thdg1nab6Rx0LLHDOqI1TEBG73rX8kDJRQh/5nJQ3WIGe6F80jOkp6 cpkZD+Ml0stPGI3ul6akaAlXrSdrA6SThselx7k/90lWuy37rw0EgeFFmLS/AOtda3Ww AQ+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to; bh=KQIYlN5HOzFLhj5jtZda0TleOgpJJL47WY9lbMV5qaE=; b=WZWR82diB8KVYH/lRD5dMlZw9g1Z8yUjTmWH31jRFO/hruhF7g5URUcmbyZ02PQTk8 BDaCrKW6PH2ppZQyyIq+PhbU0GuWZCrWycTayKJBc2swLSHvW8P9j20PlxK1q3OeBB8L qTU7hTtyYxM9SROivK2E4Xg1DrP3pEuixgDG1RMg7Iqe2YdjQQT1nu1Yy2aDV7eq2XC0 dxqHcweet8FRV5yLakNrOWTUV1sfHFLgW9XI0j7CvStUpsbg5y2BL6hCiuok6Mzo53Hq nh01+QhiC1R10h4YujF04vHz423rlilZYWcacCyEkJdif6qj3C1j3ZVyIFs0kyrB/KVo ZAbA== X-Gm-Message-State: APjAAAVe4MuOo9OF5YKM5Ex56B24MD37nq6ICbzKUGo0phH2nutQ8vkC XiIKsOkjGIGtNKnvAFtoS2s= X-Google-Smtp-Source: APXvYqz0KHMdjB7MhvC0D8454io/mcZS6Qf9m8UNey648Oqs3gRg9sIQpSRw2pSRTKlNbq3z5VwmpA== X-Received: by 2002:adf:f3d1:: with SMTP id g17mr495290wrp.378.1580327986979; Wed, 29 Jan 2020 11:59:46 -0800 (PST) Received: from localhost.localdomain ([2a02:2450:10d2:194d:8f9:806b:30e8:a48e]) by smtp.gmail.com with ESMTPSA id z19sm3303877wmi.35.2020.01.29.11.59.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Jan 2020 11:59:46 -0800 (PST) From: SeongJae Park To: Peter Zijlstra Cc: SeongJae Park , sjpark@amazon.com, akpm@linux-foundation.org, SeongJae Park , acme@kernel.org, amit@kernel.org, brendan.d.gregg@gmail.com, corbet@lwn.net, dwmw@amazon.com, mgorman@suse.de, rostedt@goodmis.org, kirill@shutemov.name, brendanhiggins@google.com, colin.king@canonical.com, minchan@kernel.org, vdavydov.dev@gmail.com, linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Ingo Molnar , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim Subject: Re: Re: Re: Re: Re: [PATCH v2 0/9] Introduce Data Access MONitor (DAMON) Date: Wed, 29 Jan 2020 20:59:07 +0100 Message-Id: <20200129195907.4589-1-sj38.park@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200129193616.GT14914@hirez.programming.kicks-ass.net> (raw) 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 Wed, 29 Jan 2020 20:36:16 +0100 Peter Zijlstra wrote: > On Wed, Jan 29, 2020 at 08:06:45PM +0100, SeongJae Park wrote: > > > Perf can do address based sampling of memops, I suspect you can create > > > something using that. > > > > If you're saying implementing DAMON in 'perf mem', I think it would conflict > > with abovely explained DAMON's goal. > > > > Else, if you're saying it would be the right place to handle the DAMON > > generated data, I agree, thank you for pointing me that. Will keep it in mind > > while shaping the interface of DAMON. > > I'm saying it might be able to provide the data you need; without damon. > > Might; because I'm not entirely sure what you're looking for, nor > exactly what events we have that provide address information. Thank you for further clarifying this :) Will also address this concern in next spin. Thanks, SeongJae Park