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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED 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 21C28C43441 for ; Mon, 19 Nov 2018 01:52:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DDBFA2080C for ; Mon, 19 Nov 2018 01:52:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DDBFA2080C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728138AbeKSMOP (ORCPT ); Mon, 19 Nov 2018 07:14:15 -0500 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:49692 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727033AbeKSMOP (ORCPT ); Mon, 19 Nov 2018 07:14:15 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8C0A380D; Sun, 18 Nov 2018 17:52:14 -0800 (PST) Received: from [10.162.0.72] (unknown [10.162.0.72]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 3DCFE3F5AF; Sun, 18 Nov 2018 17:52:12 -0800 (PST) Subject: Re: [PATCH 0/7] ACPI HMAT memory sysfs representation To: Keith Busch Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org, Greg Kroah-Hartman , Rafael Wysocki , Dave Hansen , Dan Williams References: <20181114224902.12082-1-keith.busch@intel.com> <1ed406b2-b85f-8e02-1df0-7c39aa21eca9@arm.com> <20181116155141.GA14630@localhost.localdomain> From: Anshuman Khandual Message-ID: <415d842c-1fc9-1f15-640b-6d6c0f9611e2@arm.com> Date: Mon, 19 Nov 2018 07:22:11 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20181116155141.GA14630@localhost.localdomain> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/16/2018 09:21 PM, Keith Busch wrote: > On Fri, Nov 16, 2018 at 11:57:58AM +0530, Anshuman Khandual wrote: >> On 11/15/2018 04:19 AM, Keith Busch wrote: >>> This series provides a new sysfs representation for heterogeneous >>> system memory. >>> >>> The previous series that was specific to HMAT that this series was based >>> on was last posted here: https://lkml.org/lkml/2017/12/13/968 >>> >>> Platforms may provide multiple types of cpu attached system memory. The >>> memory ranges for each type may have different characteristics that >>> applications may wish to know about when considering what node they want >>> their memory allocated from. >>> >>> It had previously been difficult to describe these setups as memory >>> rangers were generally lumped into the NUMA node of the CPUs. New >>> platform attributes have been created and in use today that describe >>> the more complex memory hierarchies that can be created. >>> >>> This series first creates new generic APIs under the kernel's node >>> representation. These new APIs can be used to create links among local >>> memory and compute nodes and export characteristics about the memory >>> nodes. Documentation desribing the new representation are provided. >>> >>> Finally the series adds a kernel user for these new APIs from parsing >>> the ACPI HMAT. >> >> Not able to see the patches from this series either on the list or on the >> archive (https://lkml.org/lkml/2018/11/15/331). > > The send-email split the cover-letter from the series, probably > something I did. Series followed immediately after: > > https://lkml.org/lkml/2018/11/15/332 Yeah got it. I can see the series on the list. Thanks for pointing out. > >> IIRC last time we discussed >> about this and the concern which I raised was in absence of a broader NUMA >> rework for multi attribute memory it might not a good idea to settle down >> and freeze sysfs interface for the user space. >