diff options
Diffstat (limited to 'include/linux/vmstat.h')
| -rw-r--r-- | include/linux/vmstat.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index d1744aa3ab9c..fee321c98550 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -178,6 +178,23 @@ static inline unsigned long zone_page_state_snapshot(struct zone *zone, return x; } +static inline unsigned long node_page_state_snapshot(pg_data_t *pgdat, + enum node_stat_item item) +{ + long x = atomic_long_read(&pgdat->vm_stat[item]); + +#ifdef CONFIG_SMP + int cpu; + for_each_online_cpu(cpu) + x += per_cpu_ptr(pgdat->per_cpu_nodestats, cpu)->vm_node_stat_diff[item]; + + if (x < 0) + x = 0; +#endif + return x; +} + + #ifdef CONFIG_NUMA extern unsigned long sum_zone_node_page_state(int node, enum zone_stat_item item); |