The patch titled
mm: use for_each_online_cpu() in vmstat
has been added to the -mm tree. Its filename is
mm-use-for_each_online_cpu-in-vmstat.patch
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------------------------------------------------------
Subject: mm: use for_each_online_cpu() in vmstat
From: Minchan Kim <minchan.kim@xxxxxxxxx>
The sum_vm_events passes cpumask for for_each_cpu(). But it's useless
since we have for_each_online_cpu. Althougth it's tirival overhead, it's
not good about coding consistency.
Let's use for_each_online_cpu instead of for_each_cpu with cpumask
argument.
Signed-off-by: Minchan Kim <minchan.kim@xxxxxxxxx>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Acked-by: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmstat.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff -puN mm/vmstat.c~mm-use-for_each_online_cpu-in-vmstat mm/vmstat.c
--- a/mm/vmstat.c~mm-use-for_each_online_cpu-in-vmstat
+++ a/mm/vmstat.c
@@ -22,14 +22,14 @@
DEFINE_PER_CPU(struct vm_event_state, vm_event_states) = {{0}};
EXPORT_PER_CPU_SYMBOL(vm_event_states);
-static void sum_vm_events(unsigned long *ret, const struct cpumask *cpumask)
+static void sum_vm_events(unsigned long *ret)
{
int cpu;
int i;
memset(ret, 0, NR_VM_EVENT_ITEMS * sizeof(unsigned long));
- for_each_cpu(cpu, cpumask) {
+ for_each_online_cpu(cpu) {
struct vm_event_state *this = &per_cpu(vm_event_states, cpu);
for (i = 0; i < NR_VM_EVENT_ITEMS; i++)
@@ -45,7 +45,7 @@ static void sum_vm_events(unsigned long
void all_vm_events(unsigned long *ret)
{
get_online_cpus();
- sum_vm_events(ret, cpu_online_mask);
+ sum_vm_events(ret);
put_online_cpus();
}
EXPORT_SYMBOL_GPL(all_vm_events);
_
Patches currently in -mm which might be from minchan.kim@xxxxxxxxx are
mm-vmap-area-cache.patch
mm-vmap-area-cache-fix.patch
mm-rename-anon_vma_lock-to-vma_lock_anon_vma.patch
mm-change-direct-call-of-spin_lockanon_vma-lock-to-inline-function.patch
mm-track-the-root-oldest-anon_vma.patch
mm-track-the-root-oldest-anon_vma-fix.patch
mm-always-lock-the-root-oldest-anon_vma.patch
mm-extend-ksm-refcounts-to-the-anon_vma-root.patch
mm-extend-ksm-refcounts-to-the-anon_vma-root-fix.patch
mm-use-for_each_online_cpu-in-vmstat.patch
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