diff options
| -rw-r--r-- | mm/vmstat.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index 5caaf3f7b8ab..ac509572a50b 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1415,11 +1415,35 @@ static const struct file_operations pagetypeinfo_file_ops = { .release = seq_release, }; +static bool is_zone_first_populated(pg_data_t *pgdat, struct zone *zone) +{ + int zid; + + for (zid = 0; zid < MAX_NR_ZONES; zid++) { + struct zone *compare = &pgdat->node_zones[zid]; + + if (populated_zone(compare)) + return zone == compare; + } + + /* The zone must be somewhere! */ + WARN_ON_ONCE(1); + return false; +} + static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat, struct zone *zone) { int i; seq_printf(m, "Node %d, zone %8s", pgdat->node_id, zone->name); + if (is_zone_first_populated(pgdat, zone)) { + seq_printf(m, "\n per-node stats"); + for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) { + seq_printf(m, "\n %-12s %lu", + vmstat_text[i + NR_VM_ZONE_STAT_ITEMS], + node_page_state(pgdat, i)); + } + } seq_printf(m, "\n pages free %lu" "\n min %lu" |