From: Aneesh Kumar K V <aneesh.kumar@linux.ibm.com>
To: "Huang, Ying" <ying.huang@intel.com>
Cc: linux-mm@kvack.org, akpm@linux-foundation.org,
Wei Xu <weixugc@google.com>, Yang Shi <shy828301@gmail.com>,
Davidlohr Bueso <dave@stgolabs.net>,
Tim C Chen <tim.c.chen@intel.com>,
Michal Hocko <mhocko@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Hesham Almatary <hesham.almatary@huawei.com>,
Dave Hansen <dave.hansen@intel.com>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
Alistair Popple <apopple@nvidia.com>,
Dan Williams <dan.j.williams@intel.com>,
Johannes Weiner <hannes@cmpxchg.org>,
jvgediya.oss@gmail.com, Bharata B Rao <bharata@amd.com>
Subject: Re: [PATCH v4] mm/demotion: Expose memory tier details via sysfs
Date: Fri, 23 Sep 2022 16:05:30 +0530 [thread overview]
Message-ID: <3a966604-77c5-e6fc-1541-2fed7c71cc0c@linux.ibm.com> (raw)
In-Reply-To: <874jwyjyy9.fsf@yhuang6-desk2.ccr.corp.intel.com>
On 9/23/22 1:37 PM, Huang, Ying wrote:
> "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> writes:
>
>> This patch adds /sys/devices/virtual/memory_tiering/ where all memory tier
>> related details can be found. All allocated memory tiers will be listed
>> there as /sys/devices/virtual/memory_tiering/memory_tierN/
>>
>> The nodes which are part of a specific memory tier can be listed via
>> /sys/devices/virtual/memory_tiering/memory_tierN/nodes
>
> It appears that XXXs is used for mask while XXXs_list is used for list?
> For example,
>
> # cat /sys/devices/system/cpu/cpu2/topology/core_cpus
> 0,00100004
> # cat /sys/devices/system/cpu/cpu2/topology/core_cpus_list
> 2,20
>
> It's better to follow the this convention?
>
That is not followed in other parts of the kernel. I was loking at cpuset
$cat cpuset.cpus.effective
0-7
>> A directory hierarchy looks like
>> :/sys/devices/virtual/memory_tiering$ tree memory_tier4/
>> memory_tier4/
>> ├── nodes
>> ├── subsystem -> ../../../../bus/memory_tiering
>> └── uevent
>>
>> :/sys/devices/virtual/memory_tiering$ cat memory_tier4/nodes
>> 0,2
>>
>> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
>
> Best Regards,
> Huang, Ying
>
> [snip]
next prev parent reply other threads:[~2022-09-23 10:36 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-22 10:22 [PATCH v4] mm/demotion: Expose memory tier details via sysfs Aneesh Kumar K.V
2022-09-23 8:07 ` Huang, Ying
2022-09-23 10:35 ` Aneesh Kumar K V [this message]
2022-09-26 1:04 ` Huang, Ying
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