From: Hao Ge <hao.ge@linux.dev>
To: Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@kernel.org>
Cc: linux-mm@kvack.org, virtualization@lists.linux.dev,
linux-kernel@vger.kernel.org, Hao Ge <hao.ge@linux.dev>
Subject: [PATCH] mm/balloon: expose per-node balloon pages in node meminfo
Date: Fri, 8 May 2026 09:53:16 +0800 [thread overview]
Message-ID: <20260508015316.25722-1-hao.ge@linux.dev> (raw)
Commit 835de37603ef ("meminfo: add a per node counter for balloon
drivers") added NR_BALLOON_PAGES and exposed it in /proc/meminfo.
However, the per-node view at /sys/devices/system/node/nodeX/meminfo
was not updated, even though the counter is already tracked per-node.
Add it to node_read_meminfo() so users can see balloon usage per
NUMA node without having to parse the raw vmstat file.
Signed-off-by: Hao Ge <hao.ge@linux.dev>
---
drivers/base/node.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/base/node.c b/drivers/base/node.c
index d7647d077b66..53f4e51d6d82 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -513,6 +513,7 @@ static ssize_t node_read_meminfo(struct device *dev,
"Node %d Slab: %8lu kB\n"
"Node %d SReclaimable: %8lu kB\n"
"Node %d SUnreclaim: %8lu kB\n"
+ "Node %d Balloon: %8lu kB\n"
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
"Node %d AnonHugePages: %8lu kB\n"
"Node %d ShmemHugePages: %8lu kB\n"
@@ -543,7 +544,8 @@ static ssize_t node_read_meminfo(struct device *dev,
node_page_state(pgdat, NR_KERNEL_MISC_RECLAIMABLE)),
nid, K(sreclaimable + sunreclaimable),
nid, K(sreclaimable),
- nid, K(sunreclaimable)
+ nid, K(sunreclaimable),
+ nid, K(node_page_state(pgdat, NR_BALLOON_PAGES))
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
,
nid, K(node_page_state(pgdat, NR_ANON_THPS)),
--
2.25.1
next reply other threads:[~2026-05-08 1:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-08 1:53 Hao Ge [this message]
2026-05-08 8:23 ` [PATCH] mm/balloon: expose per-node balloon pages in node meminfo David Hildenbrand (Arm)
2026-05-08 9:59 ` Hao Ge
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=20260508015316.25722-1-hao.ge@linux.dev \
--to=hao.ge@linux.dev \
--cc=akpm@linux-foundation.org \
--cc=david@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=virtualization@lists.linux.dev \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.