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authorChristoph Lameter <clameter@sgi.com>2007-05-09 05:35:13 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 15:30:56 -0400
commit77461ab33229d48614402decfb1b2eaa6d446861 (patch)
treed2675ff079e887645ed25ae5f793aa907d53c66a /mm
parentd1187ed21026fd512b87851d0ca26d9ae16f9059 (diff)
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')
-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 = {
641 641
642#ifdef CONFIG_SMP 642#ifdef CONFIG_SMP
643static DEFINE_PER_CPU(struct delayed_work, vmstat_work); 643static DEFINE_PER_CPU(struct delayed_work, vmstat_work);
644int sysctl_stat_interval __read_mostly = HZ;
644 645
645static void vmstat_update(struct work_struct *w) 646static void vmstat_update(struct work_struct *w)
646{ 647{
647 refresh_cpu_vm_stats(smp_processor_id()); 648 refresh_cpu_vm_stats(smp_processor_id());
648 schedule_delayed_work(&__get_cpu_var(vmstat_work), HZ); 649 schedule_delayed_work(&__get_cpu_var(vmstat_work),
650 sysctl_stat_interval);
649} 651}
650 652
651static void __devinit start_cpu_timer(int cpu) 653static void __devinit start_cpu_timer(int cpu)