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Commit 31f961a8 authored by Minchan Kim's avatar Minchan Kim Committed by Linus Torvalds
Browse files

mm: use for_each_online_cpu() in vmstat 



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: default avatarMinchan Kim <minchan.kim@gmail.com>
Reviewed-by: default avatarKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: default avatarChristoph Lameter <cl@linux-foundation.org>
Reviewed-by: default avatarKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 0aad4b31

mm/vmstat.c

+3 −3
Original line number Diff line number Diff line
@@ -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 *ret, const struct cpumask *cpumask) 
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);