From: Dave Hansen <dave.hansen@intel.com>
To: linux-mm@kvack.org, mhocko@kernel.org, akpm@linux-foundation.org,
rientjes@google.com, yosryahmed@google.com, hannes@cmpxchg.org,
shakeelb@google.com, dave.hansen@linux.intel.com,
tim.c.chen@linux.intel.com, roman.gushchin@linux.dev,
gthelen@google.com, a.manzanares@samsung.com,
heekwon.p@samsung.com, gim.jongmin@samsung.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 6/6] mm/migrate: export whether or not node is toptier in sysf
Date: Mon, 18 Apr 2022 08:34:36 -0700 [thread overview]
Message-ID: <c1475d8e-3ad6-cdab-5cc9-b44fef998636@intel.com> (raw)
In-Reply-To: <20220417034932.jborenmvfbqrfhlj@offworld>
On 4/16/22 20:49, Davidlohr Bueso wrote:
> This allows userspace to know if the node is considered fast
> memory (with CPUs attached to it). While this can be already
> derived without a new file, this helps further encapsulate the
> concept.
What is userspace supposed to *do* with this, though?
What does "attached" mean?
Isn't it just asking for trouble to add (known) redundancy to the ABI?
It seems like a recipe for future inconsistency.
next prev parent reply other threads:[~2022-04-18 15:50 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-16 5:38 [PATCH RFC lsfmm 0/6] mm: proactive reclaim and memory tiering topics Davidlohr Bueso
2022-04-16 5:38 ` [PATCH 1/6] drivers/base/node: cleanup register_node() Davidlohr Bueso
2022-04-25 22:30 ` Adam Manzanares
2022-05-03 18:17 ` David Hildenbrand
2022-05-04 4:33 ` David Rientjes
2022-04-16 5:38 ` [PATCH 2/6] mm/vmscan: use node_is_toptier helper in node_reclaim Davidlohr Bueso
2022-04-25 22:32 ` Adam Manzanares
2022-05-04 4:33 ` David Rientjes
2022-05-04 7:26 ` Jagdish Gediya
2022-05-31 11:50 ` Aneesh Kumar K.V
2022-06-01 6:12 ` Ying Huang
2022-06-01 14:00 ` Davidlohr Bueso
2022-04-16 5:38 ` [PATCH 3/6] mm: make __node_reclaim() more flexible Davidlohr Bueso
2022-04-16 5:39 ` [PATCH 4/6] mm: introduce per-node proactive reclaim interface Davidlohr Bueso
2022-04-19 0:00 ` Tim Chen
2022-04-16 5:39 ` [PATCH 5/6] mm/migration: export demotion_path of a node via sysfs Davidlohr Bueso
2022-04-22 17:31 ` Yang Shi
2022-04-22 17:33 ` Yang Shi
2022-04-22 17:50 ` Davidlohr Bueso
2022-04-17 3:49 ` [PATCH 6/6] mm/migrate: export whether or not node is toptier in sysf Davidlohr Bueso
2022-04-18 15:34 ` Dave Hansen [this message]
2022-04-18 16:45 ` Davidlohr Bueso
2022-04-18 16:50 ` Dave Hansen
2022-04-18 17:01 ` Davidlohr Bueso
2022-04-22 17:37 ` Yang Shi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=c1475d8e-3ad6-cdab-5cc9-b44fef998636@intel.com \
--to=dave.hansen@intel.com \
--cc=a.manzanares@samsung.com \
--cc=akpm@linux-foundation.org \
--cc=dave.hansen@linux.intel.com \
--cc=gim.jongmin@samsung.com \
--cc=gthelen@google.com \
--cc=hannes@cmpxchg.org \
--cc=heekwon.p@samsung.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@kernel.org \
--cc=rientjes@google.com \
--cc=roman.gushchin@linux.dev \
--cc=shakeelb@google.com \
--cc=tim.c.chen@linux.intel.com \
--cc=yosryahmed@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).