Commit 76bba142 authored Feb 22, 2013 by Wen Congyang Committed by Linus Torvalds Feb 23, 2013

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

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>

parent 90b30cdc

drivers/acpi/processor_driver.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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);