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 <[email protected]> --- v2: Move Balloon field after Unaccepted to match /proc/meminfo ordering (suggested by David Hildenbrand) --- drivers/base/node.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/base/node.c b/drivers/base/node.c index d7647d077b66..85c20aa3c7f2 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" , nid, K(node_page_state(pgdat, NR_FILE_DIRTY)), nid, K(node_page_state(pgdat, NR_WRITEBACK)), @@ -556,6 +557,8 @@ 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)) ); len += hugetlb_report_node_meminfo(buf, len, nid); return len; -- 2.25.1
