/*
* register_node - Setup a sysfs device for a node.
* @num - Node number to use when creating the device.
*
* Initialize and register the node device.
*/
static int register_node(struct node *node, int num, struct node *parent)
{
int error;
node->dev.id = num;
node->dev.bus = &node_subsys;
node->dev.release = node_device_release;
error = device_register(&node->dev);
if (!error){
device_create_file(&node->dev, &dev_attr_cpumap);
device_create_file(&node->dev, &dev_attr_cpulist);
device_create_file(&node->dev, &dev_attr_meminfo);
device_create_file(&node->dev, &dev_attr_numastat);
device_create_file(&node->dev, &dev_attr_distance);
device_create_file(&node->dev, &dev_attr_vmstat);
scan_unevictable_register_node(node);
hugetlb_register_node(node);
compaction_register_node(node);
}
return error;
}
/*
* Handle per node hstate attribute [un]registration on transistions
* to/from memoryless state.
*/
static void node_hugetlb_work(struct work_struct *work)
{
struct node *node = container_of(work, struct node, node_work);
/*
* We only get here when a node transitions to/from memoryless state.
* We can detect which transition occurred by examining whether the
* node has memory now. hugetlb_register_node() already check this
* so we try to register the attributes. If that fails, then the
* node has transitioned to memoryless, try to unregister the
* attributes.
*/
if (!hugetlb_register_node(node))
hugetlb_unregister_node(node);
}
/*
* register_node - Setup a sysfs device for a node.
* @num - Node number to use when creating the device.
*
* Initialize and register the node device.
*/
static int register_node(struct node *node, int num, struct node *parent)
{
int error;
node->dev.id = num;
node->dev.bus = &node_subsys;
node->dev.release = node_device_release;
node->dev.groups = node_dev_groups;
error = device_register(&node->dev);
if (!error){
hugetlb_register_node(node);
compaction_register_node(node);
}
return error;
}
/*
* register_node - Setup a sysfs device for a node.
* @num - Node number to use when creating the device.
*
* Initialize and register the node device.
*/
int register_node(struct node *node, int num, struct node *parent)
{
int error;
node->sysdev.id = num;
node->sysdev.cls = &node_class;
error = sysdev_register(&node->sysdev);
if (!error){
sysdev_create_file(&node->sysdev, &attr_cpumap);
sysdev_create_file(&node->sysdev, &attr_cpulist);
sysdev_create_file(&node->sysdev, &attr_meminfo);
sysdev_create_file(&node->sysdev, &attr_numastat);
sysdev_create_file(&node->sysdev, &attr_distance);
scan_unevictable_register_node(node);
hugetlb_register_node(node);
}
return error;
}