diff options
Diffstat (limited to 'kernel/include/linux/node.h')
-rw-r--r-- | kernel/include/linux/node.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/kernel/include/linux/node.h b/kernel/include/linux/node.h new file mode 100644 index 000000000..2115ad5d6 --- /dev/null +++ b/kernel/include/linux/node.h @@ -0,0 +1,84 @@ +/* + * include/linux/node.h - generic node definition + * + * This is mainly for topological representation. We define the + * basic 'struct node' here, which can be embedded in per-arch + * definitions of processors. + * + * Basic handling of the devices is done in drivers/base/node.c + * and system devices are handled in drivers/base/sys.c. + * + * Nodes are exported via driverfs in the class/node/devices/ + * directory. + */ +#ifndef _LINUX_NODE_H_ +#define _LINUX_NODE_H_ + +#include <linux/device.h> +#include <linux/cpumask.h> +#include <linux/workqueue.h> + +struct node { + struct device dev; + +#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS) + struct work_struct node_work; +#endif +}; + +struct memory_block; +extern struct node *node_devices[]; +typedef void (*node_registration_func_t)(struct node *); + +extern void unregister_node(struct node *node); +#ifdef CONFIG_NUMA +extern int register_one_node(int nid); +extern void unregister_one_node(int nid); +extern int register_cpu_under_node(unsigned int cpu, unsigned int nid); +extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid); +extern int register_mem_sect_under_node(struct memory_block *mem_blk, + int nid); +extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk, + unsigned long phys_index); + +#ifdef CONFIG_HUGETLBFS +extern void register_hugetlbfs_with_node(node_registration_func_t doregister, + node_registration_func_t unregister); +#endif +#else +static inline int register_one_node(int nid) +{ + return 0; +} +static inline int unregister_one_node(int nid) +{ + return 0; +} +static inline int register_cpu_under_node(unsigned int cpu, unsigned int nid) +{ + return 0; +} +static inline int unregister_cpu_under_node(unsigned int cpu, unsigned int nid) +{ + return 0; +} +static inline int register_mem_sect_under_node(struct memory_block *mem_blk, + int nid) +{ + return 0; +} +static inline int unregister_mem_sect_under_nodes(struct memory_block *mem_blk, + unsigned long phys_index) +{ + return 0; +} + +static inline void register_hugetlbfs_with_node(node_registration_func_t reg, + node_registration_func_t unreg) +{ +} +#endif + +#define to_node(device) container_of(device, struct node, dev) + +#endif /* _LINUX_NODE_H_ */ |