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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2016-11-27 02:13:35 +0300
committerThomas Gleixner <tglx@linutronix.de>2016-12-02 02:52:35 +0300
commit76f290935b1a395ee6c9a14697f16593591d1fe8 (patch)
tree53802f66d64f5ff31f69df029ed05c579e9ac43d
parentb32614c03413f8a6025d8677c2b7c0ee976e63d4 (diff)
downloadlinux-76f290935b1a395ee6c9a14697f16593591d1fe8.tar.xz
mm/vmstat: Drop get_online_cpus() from init_cpu_node_state/vmstat_cpu_dead()
Both functions are called with protection against cpu hotplug already so *_online_cpus() could be dropped. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Michal Hocko <mhocko@suse.com> Cc: linux-mm@kvack.org Cc: rt@linutronix.de Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Vlastimil Babka <vbabka@suse.cz> Link: http://lkml.kernel.org/r/20161126231350.10321-8-bigeasy@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--mm/vmstat.c7
1 files changed, 1 insertions, 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();
}
/*