cpu-hotplug, memory-hotplug: try offlining the node when hotremoving a cpu
authorWen Congyang <wency@cn.fujitsu.com>
Sat, 23 Feb 2013 00:33:29 +0000 (16:33 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sun, 24 Feb 2013 01:50:13 +0000 (17:50 -0800)
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>
drivers/acpi/processor_driver.c

index cbf1f122666bfa97dd3bc75ca2fe148918659569..df34bd04ae62ba88e4acc6735515e41af03aff7d 100644 (file)
@@ -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);