From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-188.mta0.migadu.com (out-188.mta0.migadu.com [91.218.175.188]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2C3EE1A9FA4 for ; Sat, 9 May 2026 00:57:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.188 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778288251; cv=none; b=k4LJaDJlrdwIQ/xEUs1Uyplt5a0EZOBmCtf5iw99OwRcq4vHQ7pSJ0FQo2YmaRPtK6ZulzV/75fm2U12uAJu27gex5mpv4xvAF6WA3hACtXIlYHFw2Q6tLRRxx/7rlwWSbNOyiIY7fUGZ5tFWzSMwRJ50hOGbn6s3FeNxKEHzbA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778288251; c=relaxed/simple; bh=RjGqogvAnFsQoPtJmKgl6dhgR0FPOw7bDOMfQ+tsLhw=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=OKjCpDHRjcd30ILSGzyZ53curSkeaOfK2X5n6KL2U0Vj5da4GOkWP6EJ1XtVcs3GKS6Tg92wGmAAqexGFctNJo/seenohmewHoflyvdCEPjNcetkuxpnOeARnUVGB+3H+AT1mB0WqhKTQZ8o2S9RnIZ7X74zz1OnQSsiW1j3XnI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=LeJ2zIJY; arc=none smtp.client-ip=91.218.175.188 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="LeJ2zIJY" 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=1778288247; 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=pD+nxbDFKBRIVr6vnl3tCVeWtnpaIBk5Z2HqW3vTtaY=; b=LeJ2zIJYOzcHEaRxAw2nzgaqb+fd2XmIDoc0tiBe561WpKjciHaVjnk+8f9FzpLiuvHdoT U/I8mzU6c7wYdctZTeiZMsFHOv8lvP7gyV0RrUSBPP1R9Ji6cgZaX7nf1iUlUn7N0d1XaS SNdesm4yr8MbYbcBfWOZVogSsiBaE1o= 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 v3] proc/meminfo: expose per-node balloon pages in node meminfo Date: Sat, 9 May 2026 08:56:31 +0800 Message-Id: <20260509005631.17183-1-hao.ge@linux.dev> Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT 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 Acked-by: David Hildenbrand (Arm) --- v3: Rebase on top of 2232ba9c7931 ("mm: add gpu active/reclaim per-node stat counters (v2)), place Balloon between Unaccepted and GPUActive to match /proc/meminfo ordering. v2: Move Balloon field after Unaccepted to match /proc/meminfo ordering (suggested by David Hildenbrand) --- drivers/base/node.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/base/node.c b/drivers/base/node.c index 126f66aa2c3e..f4d9a21cc24e 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -523,6 +523,7 @@ static ssize_t node_read_meminfo(struct device *dev, #ifdef CONFIG_UNACCEPTED_MEMORY "Node %d Unaccepted: %8lu kB\n" #endif + "Node %d Balloon: %8lu kB\n" "Node %d GPUActive: %8lu kB\n" "Node %d GPUReclaim: %8lu kB\n" , @@ -559,6 +560,7 @@ static ssize_t node_read_meminfo(struct device *dev, nid, K(sum_zone_node_page_state(nid, NR_UNACCEPTED)) #endif , + nid, K(node_page_state(pgdat, NR_BALLOON_PAGES)), nid, K(node_page_state(pgdat, NR_GPU_ACTIVE)), nid, K(node_page_state(pgdat, NR_GPU_RECLAIM)) ); -- 2.25.1