From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ot1-f70.google.com (mail-ot1-f70.google.com [209.85.210.70]) by kanga.kvack.org (Postfix) with ESMTP id AAAD36B17DA for ; Sun, 18 Nov 2018 20:52:16 -0500 (EST) Received: by mail-ot1-f70.google.com with SMTP id 32so14728623ots.15 for ; Sun, 18 Nov 2018 17:52:16 -0800 (PST) Received: from foss.arm.com (usa-sjc-mx-foss1.foss.arm.com. [217.140.101.70]) by mx.google.com with ESMTP id j14si14265031ote.283.2018.11.18.17.52.15 for ; Sun, 18 Nov 2018 17:52:15 -0800 (PST) Subject: Re: [PATCH 0/7] ACPI HMAT memory sysfs representation 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 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: owner-linux-mm@kvack.org List-ID: 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 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. >