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Groups > linux.kernel > #1530811
| From | Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 07/22] mm/vmstat: Drop get_online_cpus() from init_cpu_node_state/vmstat_cpu_dead() |
| Date | 2016-11-27 00:20 +0100 |
| Message-ID | <sHUqf-4EY-47@gated-at.bofh.it> (permalink) |
| References | <sHUqd-4EY-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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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cpu hotplug: convert more drivers (batch #6 and last) Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-27 00:20 +0100
[PATCH 01/22] cpufreq/acpi-cpufreq: Convert to hotplug state machine Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-27 00:20 +0100
Re: [PATCH 01/22] cpufreq/acpi-cpufreq: Convert to hotplug state machine Viresh Kumar <viresh.kumar@linaro.org> - 2016-11-28 06:20 +0100
Re: [PATCH 01/22] cpufreq/acpi-cpufreq: Convert to hotplug state machine Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-28 10:50 +0100
[PATCH 01/22 v2] cpufreq/acpi-cpufreq: Convert to hotplug state machine Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-28 11:00 +0100
Re: [PATCH 01/22 v2] cpufreq/acpi-cpufreq: Convert to hotplug state machine Viresh Kumar <viresh.kumar@linaro.org> - 2016-11-28 11:00 +0100
Re: [PATCH 01/22 v2] cpufreq/acpi-cpufreq: Convert to hotplug state machine "Rafael J. Wysocki" <rafael@kernel.org> - 2016-11-28 13:50 +0100
[PATCH 13/22] iommu/vt-d: Convert to hotplug state machine Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-27 00:20 +0100
[tip:smp/hotplug] iommu/vt-d: Convert to hotplug state machine tip-bot for Anna-Maria Gleixner <tipbot@zytor.com> - 2016-12-02 01:20 +0100
[PATCH 11/22] mm/zswap: Convert dst-mem to hotplug state machine Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-27 00:20 +0100
[tip:smp/hotplug] mm/zswap: Convert dst-mem to hotplug state machine tip-bot for Sebastian Andrzej Siewior <tipbot@zytor.com> - 2016-12-02 01:20 +0100
[PATCH 19/22] soc/fsl/qbman: Convert to hotplug state machine Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-27 00:20 +0100
[tip:smp/hotplug] soc/fsl/qbman: Convert to hotplug state machine tip-bot for Sebastian Andrzej Siewior <tipbot@zytor.com> - 2016-12-02 01:20 +0100
[PATCH 04/22] idle/intel: Convert to hotplug state machine Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-27 00:20 +0100
Re: [PATCH 04/22] idle/intel: Convert to hotplug state machine Thomas Gleixner <tglx@linutronix.de> - 2016-11-28 18:40 +0100
Re: [PATCH 04/22] idle/intel: Convert to hotplug state machine Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-29 10:50 +0100
[PATCH 04/22 v2] idle/intel: Convert to hotplug state machine Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-29 11:00 +0100
[PATCH 07/22] mm/vmstat: Drop get_online_cpus() from init_cpu_node_state/vmstat_cpu_dead() Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-27 00:20 +0100
Re: [PATCH 07/22] mm/vmstat: Drop get_online_cpus() from init_cpu_node_state/vmstat_cpu_dead() Michal Hocko <mhocko@kernel.org> - 2016-11-28 10:30 +0100
[tip:smp/hotplug] mm/vmstat: Drop get_online_cpus() from init_cpu_node_state/vmstat_cpu_dead() tip-bot for Sebastian Andrzej Siewior <tipbot@zytor.com> - 2016-12-02 01:20 +0100
[PATCH 03/22] idle/intel: Remove superfluous SMP fuction call Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-27 00:20 +0100
[PATCH 06/22] tracing/rb: Convert to hotplug state machine Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-27 00:20 +0100
[tip:smp/hotplug] tracing/rb: Convert to hotplug state machine tip-bot for Sebastian Andrzej Siewior <tipbot@zytor.com> - 2016-12-02 01:20 +0100
[linux-next] tracing/rb: NULL pointer dereference at trace_rb_cpu_prepare() Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-12-07 12:20 +0100
[PATCH] tracing/rb: init the CPU mask on allocation Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-12-07 14:40 +0100
[tip:smp/hotplug] tracing/rb: Init the CPU mask on allocation tip-bot for Sebastian Andrzej Siewior <tipbot@zytor.com> - 2016-12-07 14:50 +0100
Re: [PATCH] tracing/rb: init the CPU mask on allocation Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-12-07 15:40 +0100
[PATCH 16/22] arm64/cpuinfo: Convert to hotplug state machine Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-27 00:20 +0100
Re: [PATCH 16/22] arm64/cpuinfo: Convert to hotplug state machine Suzuki K Poulose <suzuki.poulose@arm.com> - 2016-11-29 18:30 +0100
[tip:smp/hotplug] arm64/cpuinfo: Convert to hotplug state machine tip-bot for Anna-Maria Gleixner <tipbot@zytor.com> - 2016-12-02 01:20 +0100
[PATCH 22/22] Remove obsolete cpu hotplug register / unregister functions Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-27 00:20 +0100
[PATCH 18/22] zram: Convert to hotplug state machine Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-27 00:20 +0100
[tip:smp/hotplug] zram: Convert to hotplug state machine tip-bot for Anna-Maria Gleixner <tipbot@zytor.com> - 2016-12-02 01:20 +0100
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