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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)
downloadop-kernel-dev-77461ab33229d48614402decfb1b2eaa6d446861.zip
op-kernel-dev-77461ab33229d48614402decfb1b2eaa6d446861.tar.gz
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 9d82464..006eb76 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)
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