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authorChristoph Lameter <clameter@sgi.com>2007-05-09 02:35:13 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 12:30:56 -0700
commit77461ab33229d48614402decfb1b2eaa6d446861 (patch)
treed2675ff079e887645ed25ae5f793aa907d53c66a /mm/vmstat.c
parentd1187ed21026fd512b87851d0ca26d9ae16f9059 (diff)
downloadlinux-77461ab33229d48614402decfb1b2eaa6d446861.tar.bz2
Make vm statistics update interval configurable
Make it configurable. Code in mm makes the vm statistics intervals independent from the cache reaper use that opportunity to make it configurable. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmstat.c')
-rw-r--r--mm/vmstat.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 9d824643a22f..006eb7621869 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -641,11 +641,13 @@ const struct seq_operations vmstat_op = {
#ifdef CONFIG_SMP
static DEFINE_PER_CPU(struct delayed_work, vmstat_work);
+int sysctl_stat_interval __read_mostly = HZ;
static void vmstat_update(struct work_struct *w)
{
refresh_cpu_vm_stats(smp_processor_id());
- schedule_delayed_work(&__get_cpu_var(vmstat_work), HZ);
+ schedule_delayed_work(&__get_cpu_var(vmstat_work),
+ sysctl_stat_interval);
}
static void __devinit start_cpu_timer(int cpu)