From: "Christoph Lameter (Ampere)" <cl@gentwo.org>
To: Yang Shi <yang@os.amperecomputing.com>
Cc: catalin.marinas@arm.com, will@kernel.org, ryan.roberts@arm.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [v4 PATCH] arm64: mm: show direct mapping use in /proc/meminfo
Date: Fri, 21 Nov 2025 13:54:31 -0800 (PST) [thread overview]
Message-ID: <7a1ac262-c992-6ef3-421d-b4419a0c4e19@gentwo.org> (raw)
In-Reply-To: <20251121193437.2147939-1-yang@os.amperecomputing.com>
On Fri, 21 Nov 2025, Yang Shi wrote:
> Although ptdump also can tell the direct map use, but it needs to dump
> the whole kernel page table. It is costly and overkilling. It is also
> in debugfs which may not be enabled by all distros. So showing direct
> map use in /proc/meminfo seems more convenient and has less overhead.
Also done the same way on x86, parisc, powerpc and s390.
Reviewed-by: Christoph Lameter (Ampere) <cl@gentwo.org>
prev parent reply other threads:[~2025-11-21 21:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-21 19:34 Yang Shi
2025-11-21 21:54 ` Christoph Lameter (Ampere) [this message]
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=7a1ac262-c992-6ef3-421d-b4419a0c4e19@gentwo.org \
--to=cl@gentwo.org \
--cc=catalin.marinas@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=ryan.roberts@arm.com \
--cc=will@kernel.org \
--cc=yang@os.amperecomputing.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
all inboxes | Powered by JetHome®