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authorWen Congyang <wency@cn.fujitsu.com>2013-02-22 16:33:31 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-23 17:50:13 -0800
commite13fe8695c57fed678877a9f3f8e99fc637ff4fb (patch)
tree2e5cc485c71054cec7a09920db376443e621eca2 /arch
parent76bba1423f6313ccf7bd7cd400f1f2049bbc740a (diff)
cpu-hotplug,memory-hotplug: clear cpu_to_node() when offlining the node
When the node is offlined, there is no memory/cpu on the node. If a sleep task runs on a cpu of this node, it will be migrated to the cpu on the other node. So we can clear cpu-to-node mapping. [akpm@linux-foundation.org: numa_clear_node() and numa_set_node() can no longer be __cpuinit] 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> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/numa.h4
-rw-r--r--arch/x86/mm/numa.c4
2 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/include/asm/numa.h b/arch/x86/include/asm/numa.h
index 52560a2038e..1b99ee5c9f0 100644
--- a/arch/x86/include/asm/numa.h
+++ b/arch/x86/include/asm/numa.h
@@ -57,8 +57,8 @@ static inline int numa_cpu_node(int cpu)
#endif
#ifdef CONFIG_NUMA
-extern void __cpuinit numa_set_node(int cpu, int node);
-extern void __cpuinit numa_clear_node(int cpu);
+extern void numa_set_node(int cpu, int node);
+extern void numa_clear_node(int cpu);
extern void __init init_cpu_to_node(void);
extern void __cpuinit numa_add_cpu(int cpu);
extern void __cpuinit numa_remove_cpu(int cpu);
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index f22680bf69e..a713d081b59 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -78,7 +78,7 @@ EXPORT_SYMBOL(node_to_cpumask_map);
DEFINE_EARLY_PER_CPU(int, x86_cpu_to_node_map, NUMA_NO_NODE);
EXPORT_EARLY_PER_CPU_SYMBOL(x86_cpu_to_node_map);
-void __cpuinit numa_set_node(int cpu, int node)
+void numa_set_node(int cpu, int node)
{
int *cpu_to_node_map = early_per_cpu_ptr(x86_cpu_to_node_map);
@@ -101,7 +101,7 @@ void __cpuinit numa_set_node(int cpu, int node)
set_cpu_numa_node(cpu, node);
}
-void __cpuinit numa_clear_node(int cpu)
+void numa_clear_node(int cpu)
{
numa_set_node(cpu, NUMA_NO_NODE);
}