diff options
author | Andy Voltz <andy.voltz@timesys.com> | 2010-11-15 16:00:38 -0500 |
---|---|---|
committer | Andy Voltz <andy.voltz@timesys.com> | 2010-11-17 11:30:34 -0500 |
commit | 2e0ae4bf137e282e825b27b02eb46f86c59d004e (patch) | |
tree | 7c2534acd757ca414f02c5b983ee67eb2b2493c6 /include/linux/vmstat.h | |
parent | 22763c5cf3690a681551162c15d34d935308c8d7 (diff) |
Bump Linux kernel to 2.6.32.25
Diffstat (limited to 'include/linux/vmstat.h')
-rw-r--r-- | include/linux/vmstat.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index 2d0f222388a8..13070d659129 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -166,6 +166,28 @@ static inline unsigned long zone_page_state(struct zone *zone, return x; } +/* + * More accurate version that also considers the currently pending + * deltas. For that we need to loop over all cpus to find the current + * deltas. There is no synchronization so the result cannot be + * exactly accurate either. + */ +static inline unsigned long zone_page_state_snapshot(struct zone *zone, + enum zone_stat_item item) +{ + long x = atomic_long_read(&zone->vm_stat[item]); + +#ifdef CONFIG_SMP + int cpu; + for_each_online_cpu(cpu) + x += zone_pcp(zone, cpu)->vm_stat_diff[item]; + + if (x < 0) + x = 0; +#endif + return x; +} + extern unsigned long global_reclaimable_pages(void); extern unsigned long zone_reclaimable_pages(struct zone *zone); |