6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: MengEn Sun <mengensun@xxxxxxxxxxx> commit 2ea80b039b9af0b71c00378523b71c254fb99c23 upstream. Since 5.14-rc1, NUMA events will only be folded from per-CPU statistics to per zone and global statistics when the user actually needs it. Currently, the kernel has performs the fold operation when reading /proc/vmstat, but does not perform the fold operation in /proc/zoneinfo. This can lead to inaccuracies in the following statistics in zoneinfo: - numa_hit - numa_miss - numa_foreign - numa_interleave - numa_local - numa_other Therefore, before printing per-zone vm_numa_event when reading /proc/zoneinfo, we should also perform the fold operation. Link: https://lkml.kernel.org/r/1730433998-10461-1-git-send-email-mengensun@xxxxxxxxxxx Fixes: f19298b9516c ("mm/vmstat: convert NUMA statistics to basic NUMA counters") Signed-off-by: MengEn Sun <mengensun@xxxxxxxxxxx> Reviewed-by: JinLiang Zheng <alexjlzheng@xxxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- mm/vmstat.c | 1 + 1 file changed, 1 insertion(+) --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1723,6 +1723,7 @@ static void zoneinfo_show_print(struct s zone_page_state(zone, i)); #ifdef CONFIG_NUMA + fold_vm_zone_numa_events(zone); for (i = 0; i < NR_VM_NUMA_EVENT_ITEMS; i++) seq_printf(m, "\n %-12s %lu", numa_stat_name(i), zone_numa_event_state(zone, i));
