> This adds a generic function 'unregister_node()'.
> It is used to remove objects of a node going away
> for hotplug.
>
> Signed-off-by: Keiichiro Tokunaga <[email protected]>
> ---
>
> linux-2.6.12-rc3-mm3-kei/drivers/base/node.c | 15 +++++++++++++--
> linux-2.6.12-rc3-mm3-kei/include/linux/node.h | 1 +
> 2 files changed, 14 insertions(+), 2 deletions(-)
>
> diff -puN drivers/base/node.c~numa_hp_base drivers/base/node.c
> --- linux-2.6.12-rc3-mm3/drivers/base/node.c~numa_hp_base 2005-05-07 19:58:15.000000000 +0900
> +++ linux-2.6.12-rc3-mm3-kei/drivers/base/node.c 2005-05-07 19:58:15.000000000 +0900
> @@ -136,7 +136,7 @@ static SYSDEV_ATTR(distance, S_IRUGO, no
> *
> * 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 +153,19 @@ int __init register_node(struct node *no
> return error;
> }
>
> +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);
> +}
Is it a bug to call unregister_node() if there are still cpus or
memory present in the node? Note that register_cpu() creates a
symlink under the node directory to the cpu -- are you assuming that
all the node's cpu sysdevs will have been unregistered by the time
unregister_node is called? If so, is it possible to enforce that, or
at least document it?
> +EXPORT_SYMBOL_GPL(register_node);
> +EXPORT_SYMBOL_GPL(unregister_node);
What module code needs to call these? ACPI?
Nathan
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