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From: "Huang, Ying" <ying.huang@intel.com>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.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 16:07:42 +0800	[thread overview]
Message-ID: <874jwyjyy9.fsf@yhuang6-desk2.ccr.corp.intel.com> (raw)
In-Reply-To: <20220922102201.62168-1-aneesh.kumar@linux.ibm.com> (Aneesh Kumar K. V.'s message of "Thu, 22 Sep 2022 15:52:01 +0530")

"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?

> 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]


  reply	other threads:[~2022-09-23  8:07 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 [this message]
2022-09-23 10:35   ` Aneesh Kumar K V
2022-09-26  1:04     ` Huang, Ying

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