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mm/vmstat: Avoid on each online CPU loops

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Both iterations over online cpus can be replaced by the proper node
specific functions.

Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Johannes Weiner <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
This commit is contained in:
Sebastian Andrzej Siewior 2016-11-29 15:51:14 +01:00 • committed by Thomas Gleixner
commit 4c501327b4
1 changed files with 9 additions and 7 deletions
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16
mm/vmstat.c
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@ -1720,19 +1720,21 @@ static void __init start_shepherd_timer(void)
static void __init init_cpu_node_state(void)
{
int cpu;
int node;
for_each_online_cpu(cpu)
node_set_state(cpu_to_node(cpu), N_CPU);
for_each_online_node(node) {
if (cpumask_weight(cpumask_of_node(node)) > 0)
node_set_state(node, N_CPU);
}
}
static void vmstat_cpu_dead(int node)
{
int cpu;
const struct cpumask *node_cpus;
for_each_online_cpu(cpu)
if (cpu_to_node(cpu) == node)
return;
node_cpus = cpumask_of_node(node);
if (cpumask_weight(node_cpus) > 0)
return;
node_clear_state(node, N_CPU);
}