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Commit 4b45099b authored by Keiichiro Tokunaga's avatar Keiichiro Tokunaga Committed by Greg Kroah-Hartman
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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: default avatarKeiichiro Tokunaga <tokunaga.keiich@jp.fujitsu.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>

diff -puN drivers/base/node.c~numa_hp_base drivers/base/node.c
parent f4096618

drivers/base/node.c

+18 −2
Original line number Diff line number Diff line
@@ -136,7 +136,7 @@ static SYSDEV_ATTR(distance, S_IRUGO, node_read_distance, NULL); 
 *

 * Initialize and register the node device.

 */

int __init register_node(struct node *node, int num, struct node *parent)

int register_node(struct node *node, int num, struct node *parent)

{

	int error;
@@ -153,8 +153,24 @@ int __init register_node(struct node *node, int num, struct node *parent) 
	return error;

}



/**

 * unregister_node - unregister a node device

 * @node: node going away

 *

 * Unregisters a node device @node.  All the devices on the node must be

 * unregistered before calling this function.

 */

void unregister_node(struct node *node)

{

	sysdev_remove_file(&node->sysdev, &attr_cpumap);

	sysdev_remove_file(&node->sysdev, &attr_meminfo);

	sysdev_remove_file(&node->sysdev, &attr_numastat);

	sysdev_remove_file(&node->sysdev, &attr_distance);



	sysdev_unregister(&node->sysdev);

}



int __init register_node_type(void)

static int __init register_node_type(void)

{

	return sysdev_class_register(&node_class);

}

include/linux/node.h

+1 −0
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ struct node { 
};



extern int register_node(struct node *, int, struct node *);

extern void unregister_node(struct node *node);



#define to_node(sys_device) container_of(sys_device, struct node, sysdev)