From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: linux-kernel@vger.kernel.org
Cc: rt@linutronix.de, tglx@linutronix.de,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
Mel Gorman <mgorman@techsingularity.net>,
Johannes Weiner <hannes@cmpxchg.org>,
linux-mm@kvack.org
Subject: [PATCH 07/22] mm/vmstat: Drop get_online_cpus() from init_cpu_node_state/vmstat_cpu_dead()
Date: Sun, 27 Nov 2016 00:13:35 +0100 [thread overview]
Message-ID: <20161126231350.10321-8-bigeasy@linutronix.de> (raw)
In-Reply-To: <20161126231350.10321-1-bigeasy@linutronix.de>
Both functions are called with protection against cpu hotplug already so
*_online_cpus() could be dropped.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: linux-mm@kvack.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
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
--
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next parent reply other threads:[~2016-11-26 23:14 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20161126231350.10321-1-bigeasy@linutronix.de>
2016-11-26 23:13 ` Sebastian Andrzej Siewior [this message]
2016-11-28 9:24 ` [PATCH 07/22] mm/vmstat: Drop get_online_cpus() from init_cpu_node_state/vmstat_cpu_dead() Michal Hocko
2016-11-26 23:13 ` [PATCH 08/22] mm/vmstat: Avoid on each online CPU loops Sebastian Andrzej Siewior
2016-11-28 9:28 ` Michal Hocko
2016-11-29 14:08 ` Thomas Gleixner
2016-11-29 14:44 ` Michal Hocko
2016-11-29 14:51 ` [PATCH 08/22 v2] " Sebastian Andrzej Siewior
2016-11-29 15:20 ` Michal Hocko
2016-11-26 23:13 ` [PATCH 09/22] mm/vmstat: Convert to hotplug state machine Sebastian Andrzej Siewior
2016-11-29 14:52 ` [PATCH 09/22 v2] " Sebastian Andrzej Siewior
2016-11-26 23:13 ` [PATCH 10/22] mm/zsmalloc: " Sebastian Andrzej Siewior
2016-11-26 23:13 ` [PATCH 11/22] mm/zswap: Convert dst-mem " Sebastian Andrzej Siewior
2016-11-26 23:13 ` [PATCH 12/22] mm/zswap: Convert pool " Sebastian Andrzej Siewior
2016-11-26 23:13 ` [PATCH 14/22] mm/compaction: Convert " Sebastian Andrzej Siewior
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