From: Hao Ge Date: Sat, 9 May 2026 00:56:31 +0000 (+0800) Subject: proc/meminfo: expose per-node balloon pages in node meminfo X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a1e6b0968833c2dd6193d05daf5700f9e0492126;p=thirdparty%2Fkernel%2Flinux.git proc/meminfo: expose per-node balloon pages in node meminfo 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. Link: https://lore.kernel.org/20260509005631.17183-1-hao.ge@linux.dev Signed-off-by: Hao Ge Acked-by: David Hildenbrand (Arm) Cc: Danilo Krummrich Cc: Greg Kroah-Hartman Cc: "Rafael J. Wysocki" Signed-off-by: Andrew Morton --- 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)) );