From: Anshuman Khandual <anshuman.khandual@arm.com>
To: Keith Busch <keith.busch@intel.com>
Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
linux-mm@kvack.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Rafael Wysocki <rafael@kernel.org>,
Dave Hansen <dave.hansen@intel.com>,
Dan Williams <dan.j.williams@intel.com>
Subject: Re: [PATCH 0/7] ACPI HMAT memory sysfs representation
Date: Mon, 19 Nov 2018 07:22:11 +0530 [thread overview]
Message-ID: <415d842c-1fc9-1f15-640b-6d6c0f9611e2@arm.com> (raw)
In-Reply-To: <20181116155141.GA14630@localhost.localdomain>
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.
>
next prev parent reply other threads:[~2018-11-19 1:52 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-14 22:49 [PATCH 0/7] ACPI HMAT memory sysfs representation Keith Busch
2018-11-16 6:27 ` Anshuman Khandual
2018-11-16 15:51 ` Keith Busch
2018-11-19 1:52 ` Anshuman Khandual [this message]
2018-11-16 16:55 ` Dave Hansen
2018-11-19 5:44 ` Anshuman Khandual
2018-11-19 17:37 ` Dave Hansen
2018-11-22 11:52 ` Anshuman Khandual
2018-11-22 18:01 ` Dave Hansen
2018-11-23 6:42 ` Anshuman Khandual
2018-11-23 19:21 ` Dave Hansen
2018-11-23 21:13 ` Dan Williams
2018-11-26 15:52 ` Anshuman Khandual
2018-11-26 16:42 ` Dave Hansen
2018-11-26 18:08 ` Dan Williams
2018-11-27 10:15 ` Anshuman Khandual
2018-11-27 16:56 ` Dan Williams
2018-11-26 15:38 ` Anshuman Khandual
2018-11-26 17:20 ` Dave Hansen
2018-11-27 9:32 ` Anshuman Khandual
2018-11-22 18:08 ` Dan Williams
2018-11-23 7:10 ` Anshuman Khandual
2018-11-23 17:15 ` Dan Williams
2018-11-27 14:05 ` Anshuman Khandual
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