[PATCH 07/22] mm/vmstat: Drop get_online_cpus() from init_cpu_node_state/vmstat_cpu_dead()

From: Sebastian Andrzej Siewior
Date: Sat Nov 26 2016 - 18:18:31 EST


Both functions are called with protection against cpu hotplug already so
*_online_cpus() could be dropped.

Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: linux-mm@xxxxxxxxx
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
mm/vmstat.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/mm/vmstat.c b/mm/vmstat.c
index 604f26a4f696..0b63ffb5c407 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1722,24 +1722,19 @@ static void __init init_cpu_node_state(void)
{
int cpu;

- get_online_cpus();
for_each_online_cpu(cpu)
node_set_state(cpu_to_node(cpu), N_CPU);
- put_online_cpus();
}

static void vmstat_cpu_dead(int node)
{
int cpu;

- get_online_cpus();
for_each_online_cpu(cpu)
if (cpu_to_node(cpu) == node)
- goto end;
+ return;

node_clear_state(node, N_CPU);
-end:
- put_online_cpus();
}

/*
--
2.10.2