From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3676CCD3427 for ; Fri, 8 May 2026 01:54:30 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 327C56B00BF; Thu, 7 May 2026 21:54:28 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 2D5856B00C5; Thu, 7 May 2026 21:54:28 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 19CBA6B00C9; Thu, 7 May 2026 21:54:28 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 0209A6B00C1 for ; Thu, 7 May 2026 21:54:27 -0400 (EDT) Received: from smtpin30.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 681B41A068B for ; Fri, 8 May 2026 01:54:27 +0000 (UTC) X-FDA: 84742582974.30.5DE26BC Received: from out-186.mta1.migadu.com (out-186.mta1.migadu.com [95.215.58.186]) by imf21.hostedemail.com (Postfix) with ESMTP id 95C8E1C000B for ; Fri, 8 May 2026 01:54:25 +0000 (UTC) Authentication-Results: imf21.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=gB5wWFR8; dmarc=pass (policy=none) header.from=linux.dev; spf=pass (imf21.hostedemail.com: domain of hao.ge@linux.dev designates 95.215.58.186 as permitted sender) smtp.mailfrom=hao.ge@linux.dev ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1778205266; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:references:dkim-signature; bh=nseJDaSxTNqf6W2FqkALGVnCq/m8td61Q2PPLEqM7Zc=; b=mrA1yU3hymRic8SR9FhDE7dyMpW3OgdgC6QVIi1nktkBDAEJVddPbVb+SYgN3maLMlrMvG pOYg7HYeC+I/tn4youo4nEatetJ2H3hlsDEcZlN6DJW9K4SVaNYTfkCabfBj01Fxkw6K8D xxo/BsLCbfvW1CO0iP8IOiL4oQy6+L8= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1778205266; a=rsa-sha256; cv=none; b=UmB5hfSPrYtlS/3Qgkqv5BtscAEkSz5Ssy9sZ2yPom3ezZ8gWgfMOc6BG48FlAx6jPJ3Wk rIgNKokcxf3bA4CvmBDDIy5CBan2SF3JpBJtUJNXwjiZ2yxR/kd9gDM0DgtcblB47fQeyH 0YdOQTdkaouJMxSfhn6vOEMKAEs3xOM= ARC-Authentication-Results: i=1; imf21.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=gB5wWFR8; dmarc=pass (policy=none) header.from=linux.dev; spf=pass (imf21.hostedemail.com: domain of hao.ge@linux.dev designates 95.215.58.186 as permitted sender) smtp.mailfrom=hao.ge@linux.dev X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1778205262; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=nseJDaSxTNqf6W2FqkALGVnCq/m8td61Q2PPLEqM7Zc=; b=gB5wWFR8d2fS6CPEk685eZA7JwGi9erehPEoqkVzp0el5erKaewWqfl6AD8KiWU9D8HS// pukirYz/z+LC5LSbu6Ep31VUgJUuhISwzvJa5QpVySDArvRBeN9E9c7J0Ddgl5bj/kn0uB XuvRSPHbWISeDrHw4Xsmv1wjCeMyZmA= From: Hao Ge To: Andrew Morton , David Hildenbrand Cc: linux-mm@kvack.org, virtualization@lists.linux.dev, linux-kernel@vger.kernel.org, Hao Ge Subject: [PATCH] mm/balloon: expose per-node balloon pages in node meminfo Date: Fri, 8 May 2026 09:53:16 +0800 Message-Id: <20260508015316.25722-1-hao.ge@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 95C8E1C000B X-Stat-Signature: kedm8gi7ci1r1a543kxty7aq4goppxr8 X-Rspam-User: X-HE-Tag: 1778205265-796989 X-HE-Meta: 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 mGQdhTOY OD916fV/nQkLdRVfr5XJirhOdlnPHTqN3fRlHQve71xtEoj5ecPhk0ZxPOwC66rmhiZYOOBw5HS/6mutcCtLiWA+9pN8qC6+lXorzyNOSxlvENbWQSnlsOjGAHP2b1o97e0BrCP0shgsvczIudMboeIqtmN91+ZzBc4PnxzrtAoQOXvS+TM4sp6pwxAhb9zDi7S6N Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 --- 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