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[PATCH] Driver core: unregister_node() for hotplug use
This adds a generic function 'unregister_node()'. It is used to remove objects of a node going away for hotplug. All the devices on the node must be unregistered before calling this function. Signed-off-by: Keiichiro Tokunaga <tokunaga.keiich@jp.fujitsu.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> diff -puN drivers/base/node.c~numa_hp_base drivers/base/node.c
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@ -136,7 +136,7 @@ static SYSDEV_ATTR(distance, S_IRUGO, node_read_distance, NULL);
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*
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*
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* Initialize and register the node device.
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* Initialize and register the node device.
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*/
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*/
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int __init register_node(struct node *node, int num, struct node *parent)
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int register_node(struct node *node, int num, struct node *parent)
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{
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{
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int error;
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int error;
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@ -153,8 +153,24 @@ int __init register_node(struct node *node, int num, struct node *parent)
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return error;
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return error;
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}
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}
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/**
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* unregister_node - unregister a node device
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* @node: node going away
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*
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* Unregisters a node device @node. All the devices on the node must be
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* unregistered before calling this function.
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*/
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void unregister_node(struct node *node)
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{
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sysdev_remove_file(&node->sysdev, &attr_cpumap);
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sysdev_remove_file(&node->sysdev, &attr_meminfo);
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sysdev_remove_file(&node->sysdev, &attr_numastat);
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sysdev_remove_file(&node->sysdev, &attr_distance);
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int __init register_node_type(void)
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sysdev_unregister(&node->sysdev);
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}
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static int __init register_node_type(void)
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{
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{
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return sysdev_class_register(&node_class);
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return sysdev_class_register(&node_class);
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}
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}
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@ -27,6 +27,7 @@ struct node {
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};
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};
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extern int register_node(struct node *, int, struct node *);
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extern int register_node(struct node *, int, struct node *);
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extern void unregister_node(struct node *node);
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#define to_node(sys_device) container_of(sys_device, struct node, sysdev)
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#define to_node(sys_device) container_of(sys_device, struct node, sysdev)
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