[tip:smp/hotplug] mm/vmstat: Drop get_online_cpus() from init_cpu_node_state/vmstat_cpu_dead()

[tip-bot for Sebastian Andrzej Siewior]

Commit-ID:  76f290935b1a395ee6c9a14697f16593591d1fe8
Gitweb: http://git.kernel.org/tip/76f290935b1a395ee6c9a14697f16593591d1fe8
Author: Sebastian Andrzej Siewior 
AuthorDate: Sun, 27 Nov 2016 00:13:35 +0100
Committer:  Thomas Gleixner 
CommitDate: Fri, 2 Dec 2016 00:52:35 +0100

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 
Acked-by: Michal Hocko 
Cc: linux...@kvack.org
Cc: r...@linutronix.de
Cc: Johannes Weiner 
Cc: Andrew Morton 
Cc: Mel Gorman 
Cc: Vlastimil Babka 
Link: http://lkml.kernel.org/r/20161126231350.10321-8-bige...@linutronix.de
Signed-off-by: Thomas Gleixner 

---
 mm/vmstat.c | 7 +--
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/mm/vmstat.c b/mm/vmstat.c
index 604f26a..0b63ffb 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();
 }
 
 /*

[tip:smp/hotplug] mm/vmstat: Drop get_online_cpus() from init_cpu_node_state/vmstat_cpu_dead()

[tip-bot for Sebastian Andrzej Siewior]

Commit-ID:  76f290935b1a395ee6c9a14697f16593591d1fe8
Gitweb: http://git.kernel.org/tip/76f290935b1a395ee6c9a14697f16593591d1fe8
Author: Sebastian Andrzej Siewior 
AuthorDate: Sun, 27 Nov 2016 00:13:35 +0100
Committer:  Thomas Gleixner 
CommitDate: Fri, 2 Dec 2016 00:52:35 +0100

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 
Acked-by: Michal Hocko 
Cc: linux...@kvack.org
Cc: r...@linutronix.de
Cc: Johannes Weiner 
Cc: Andrew Morton 
Cc: Mel Gorman 
Cc: Vlastimil Babka 
Link: http://lkml.kernel.org/r/20161126231350.10321-8-bige...@linutronix.de
Signed-off-by: Thomas Gleixner 

---
 mm/vmstat.c | 7 +--
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/mm/vmstat.c b/mm/vmstat.c
index 604f26a..0b63ffb 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();
 }
 
 /*