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cpu-hotplug, memory-hotplug: try offlining the node when hotremoving a cpu

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The node will be offlined when all memory/cpu on the node is hotremoved.
So we should try offline the node when hotremoving a cpu on the node.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Jiang Liu <liuj97@gmail.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Wen Congyang 2013-02-22 16:33:29 -08:00 committed by Linus Torvalds
parent 90b30cdc1d
commit 76bba1423f
1 changed files with 2 additions and 0 deletions
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2
drivers/acpi/processor_driver.c
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@ -45,6 +45,7 @@
#include <linux/cpuidle.h>
#include <linux/slab.h>
#include <linux/acpi.h>
#include <linux/memory_hotplug.h>
#include <asm/io.h>
#include <asm/cpu.h>
@ -641,6 +642,7 @@ static int acpi_processor_remove(struct acpi_device *device)
per_cpu(processors, pr->id) = NULL;
per_cpu(processor_device_array, pr->id) = NULL;
try_offline_node(cpu_to_node(pr->id));
free:
free_cpumask_var(pr->throttling.shared_cpu_map);